Change android:extractNativeLibs to false

We're trying this to see if that fixes an F-Droid build issue.

See #319.

.gitignore

@@ -6,6 +6,7 @@
 build/
 *.apk
 *.so
+.externalNativeBuild
 
 # Crashlytics configuations
 com_crashlytics_export_strings.xml

.idea/codeStyleSettings.xml

@@ -77,7 +77,7 @@
                   <match>
                     <AND>
                       <NAME>xmlns:android</NAME>
-                      <XML_NAMESPACE>Namespace:</XML_NAMESPACE>
+                      <XML_NAMESPACE>^$</XML_NAMESPACE>
                     </AND>
                   </match>
                 </rule>
@@ -87,7 +87,7 @@
                   <match>
                     <AND>
                       <NAME>xmlns:.*</NAME>
-                      <XML_NAMESPACE>Namespace:</XML_NAMESPACE>
+                      <XML_NAMESPACE>^$</XML_NAMESPACE>
                     </AND>
                   </match>
                   <order>BY_NAME</order>
@@ -224,6 +224,6 @@
         </codeStyleSettings>
       </value>
     </option>
-    <option name="PREFERRED_PROJECT_CODE_STYLE" value="TermuxCodeStyle" />
+    <option name="PREFERRED_PROJECT_CODE_STYLE" value="Default (1)" />
   </component>
 </project>

.idea/gradle.xml

@@ -6,13 +6,15 @@
         <option name="disableWrapperSourceDistributionNotification" value="true" />
         <option name="distributionType" value="DEFAULT_WRAPPED" />
         <option name="externalProjectPath" value="$PROJECT_DIR$" />
-        <option name="gradleJvm" value="1.8" />
         <option name="modules">
           <set>
             <option value="$PROJECT_DIR$" />
             <option value="$PROJECT_DIR$/app" />
+            <option value="$PROJECT_DIR$/terminal-emulator" />
+            <option value="$PROJECT_DIR$/terminal-view" />
           </set>
         </option>
+        <option name="resolveModulePerSourceSet" value="false" />
       </GradleProjectSettings>
     </option>
   </component>

.idea/inspectionProfiles/Project_Default.xml

@@ -1,15 +1,71 @@
 <component name="InspectionProjectProfileManager">
   <profile version="1.0">
     <option name="myName" value="Project Default" />
-    <inspection_tool class="AndroidLintGoogleAppIndexingWarning" enabled="false" level="WARNING" enabled_by_default="false" />
+    <inspection_tool class="AndroidLintLogConditional" enabled="true" level="WARNING" enabled_by_default="true" />
-    <inspection_tool class="EmptyStatementBody" enabled="true" level="WARNING" enabled_by_default="true">
+    <inspection_tool class="AndroidLintNegativeMargin" enabled="true" level="WARNING" enabled_by_default="true" />
+    <inspection_tool class="AssignmentUsedAsCondition" enabled="true" level="WARNING" enabled_by_default="true" />
+    <inspection_tool class="DeprecatedAPI" enabled="false" level="WARNING" enabled_by_default="false" />
+    <inspection_tool class="DuplicateSwitchCase" enabled="false" level="WARNING" enabled_by_default="false" />
+    <inspection_tool class="EmptyStatementBody" enabled="false" level="WARNING" enabled_by_default="false">
       <option name="m_reportEmptyBlocks" value="true" />
-      <option name="commentsAreContent" value="true" />
     </inspection_tool>
+    <inspection_tool class="EndlessLoop" enabled="false" level="WARNING" enabled_by_default="false" />
+    <inspection_tool class="EqualityInConditionalOperator" enabled="false" level="WARNING" enabled_by_default="false" />
+    <inspection_tool class="Finalize" enabled="true" level="WARNING" enabled_by_default="true">
+      <option name="ignoreTrivialFinalizers" value="true" />
+    </inspection_tool>
+    <inspection_tool class="FinalizeNotProtected" enabled="true" level="WARNING" enabled_by_default="true" />
+    <inspection_tool class="FormatSpecifiers" enabled="false" level="WARNING" enabled_by_default="false" />
+    <inspection_tool class="FunctionImplicitDeclarationInspection" enabled="false" level="WARNING" enabled_by_default="false" />
+    <inspection_tool class="HidesUpperScope" enabled="false" level="WARNING" enabled_by_default="false" />
+    <inspection_tool class="HidingNonVirtualFunction" enabled="false" level="WARNING" enabled_by_default="false" />
+    <inspection_tool class="ImplicitIntegerAndEnumConversion" enabled="false" level="WARNING" enabled_by_default="false" />
+    <inspection_tool class="ImplicitPointerAndIntegerConversion" enabled="false" level="WARNING" enabled_by_default="false" />
+    <inspection_tool class="IncompatibleEnums" enabled="false" level="WARNING" enabled_by_default="false" />
+    <inspection_tool class="IncompatibleInitializers" enabled="false" level="WARNING" enabled_by_default="false" />
+    <inspection_tool class="IncompatiblePointers" enabled="false" level="WARNING" enabled_by_default="false" />
+    <inspection_tool class="InstanceofChain" enabled="true" level="WARNING" enabled_by_default="true">
+      <option name="ignoreInstanceofOnLibraryClasses" value="false" />
+    </inspection_tool>
+    <inspection_tool class="KRUnspecifiedParameters" enabled="false" level="WARNING" enabled_by_default="false" />
+    <inspection_tool class="LocalValueEscapesScope" enabled="false" level="WARNING" enabled_by_default="false" />
+    <inspection_tool class="LoggerInitializedWithForeignClass" enabled="false" level="WARNING" enabled_by_default="false">
+      <option name="loggerClassName" value="org.apache.log4j.Logger,org.slf4j.LoggerFactory,org.apache.commons.logging.LogFactory,java.util.logging.Logger" />
+      <option name="loggerFactoryMethodName" value="getLogger,getLogger,getLog,getLogger" />
+    </inspection_tool>
+    <inspection_tool class="MissingReturn" enabled="false" level="WARNING" enabled_by_default="false" />
+    <inspection_tool class="MissingSwitchCase" enabled="false" level="WARNING" enabled_by_default="false" />
+    <inspection_tool class="NotImplementedFunctions" enabled="false" level="WARNING" enabled_by_default="false" />
+    <inspection_tool class="NotInitializedVariable" enabled="false" level="WARNING" enabled_by_default="false" />
+    <inspection_tool class="NotSuperclass" enabled="false" level="WARNING" enabled_by_default="false" />
+    <inspection_tool class="OCDFAInspection" enabled="false" level="WARNING" enabled_by_default="false" />
+    <inspection_tool class="OCLoopDoesntUseConditionVariableInspection" enabled="false" level="WARNING" enabled_by_default="false" />
+    <inspection_tool class="OCSimplifyInspection" enabled="false" level="WARNING" enabled_by_default="false" />
+    <inspection_tool class="OCUnusedGlobalDeclarationInspection" enabled="false" level="WARNING" enabled_by_default="false" />
+    <inspection_tool class="OCUnusedMacroInspection" enabled="false" level="WARNING" enabled_by_default="false" />
+    <inspection_tool class="OCUnusedStructInspection" enabled="false" level="WARNING" enabled_by_default="false" />
+    <inspection_tool class="OCUnusedTemplateParameterInspection" enabled="false" level="WARNING" enabled_by_default="false" />
+    <inspection_tool class="OnDemandImport" enabled="true" level="WARNING" enabled_by_default="true" />
+    <inspection_tool class="PrivateMemberAccessBetweenOuterAndInnerClass" enabled="true" level="WARNING" enabled_by_default="true" />
+    <inspection_tool class="ResourceNotFoundInspection" enabled="false" level="WARNING" enabled_by_default="false" />
+    <inspection_tool class="SamePackageImport" enabled="true" level="WARNING" enabled_by_default="true" />
+    <inspection_tool class="SignednessMismatch" enabled="false" level="WARNING" enabled_by_default="false" />
     <inspection_tool class="SpellCheckingInspection" enabled="false" level="TYPO" enabled_by_default="false">
       <option name="processCode" value="true" />
       <option name="processLiterals" value="true" />
       <option name="processComments" value="true" />
     </inspection_tool>
+    <inspection_tool class="UnnecessaryFullyQualifiedName" enabled="true" level="WARNING" enabled_by_default="true">
+      <option name="m_ignoreJavadoc" value="false" />
+    </inspection_tool>
+    <inspection_tool class="UnreachableCode" enabled="false" level="WARNING" enabled_by_default="false" />
+    <inspection_tool class="UnusedExpressionResult" enabled="false" level="WARNING" enabled_by_default="false" />
+    <inspection_tool class="UnusedImportStatement" enabled="false" level="WARNING" enabled_by_default="false" />
+    <inspection_tool class="UnusedLocalVariable" enabled="false" level="WARNING" enabled_by_default="false" />
+    <inspection_tool class="UnusedLocalization" enabled="false" level="WARNING" enabled_by_default="false" />
+    <inspection_tool class="UnusedParameter" enabled="false" level="WARNING" enabled_by_default="false" />
+    <inspection_tool class="UnusedValue" enabled="false" level="WARNING" enabled_by_default="false" />
+    <inspection_tool class="ValueMayNotFitIntoReceiver" enabled="false" level="WARNING" enabled_by_default="false" />
+    <inspection_tool class="VariableNotUsedInsideIf" enabled="true" level="WARNING" enabled_by_default="true" />
   </profile>
 </component>

.travis.yml

@@ -1,20 +1,25 @@
-language: android
 sudo: false
+language: android
+jdk: oraclejdk8
 
 env:
   global:
     # The next declaration is the encrypted COVERITY_SCAN_TOKEN, created
     # via the "travis encrypt" command using the project repo's public key
-    - secure: "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"
+    - secure: "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"
 
 android:
   components:
     - platform-tools
     - tools
-    - build-tools-23.0.2
+    - build-tools-25.0.3
-    - android-23
+    - android-25
     - extra-android-m2repository
 
+before_install:
+  - git clone https://github.com/urho3d/android-ndk.git $HOME/android-ndk
+  - export ANDROID_NDK_HOME=$HOME/android-ndk
+
 script:
   - ./gradlew testDebugUnitTest
 
@@ -25,5 +30,5 @@ addons:
       description: "Terminal emulator and Linux environment for Android"
     notification_email: fredrik@fornwall.net
     build_command_prepend: "./gradlew clean"
-    build_command: "./gradlew assemble"
+    build_command: "./gradlew build"
-    branch_pattern: coverity_scan
+    branch_pattern: master

LICENSE.md

@@ -0,0 +1,3 @@
+Released under [the GPLv3 license](https://www.gnu.org/licenses/gpl.html).
+
+Contains code from `Terminal Emulator for Android` by which is released under [the Apache License 2.0](https://www.apache.org/licenses/).

README.md

@@ -3,24 +3,14 @@ Termux app
 [![Travis build status](https://travis-ci.org/termux/termux-app.svg?branch=master)](https://travis-ci.org/termux/termux-app)
 [![Join the chat at https://gitter.im/termux/termux](https://badges.gitter.im/termux/termux.svg)](https://gitter.im/termux/termux)
 
-
+[Termux](https://termux.com) is an Android terminal app and Linux environment.
-Termux is an Android terminal app and Linux environment.
 
 * [Termux on Google Play Store](https://play.google.com/store/apps/details?id=com.termux)
 * [Termux on F-Droid](https://f-droid.org/repository/browse/?fdid=com.termux)
-* [termux.com](http://termux.com)
 * [Termux Help](http://termux.com/help/)
-* [Termux app on GitHub](https://github.com/termux/termux-app)
-* [Termux packages on GitHub](https://github.com/termux/termux-packages)
 * [Termux Google+ community](http://termux.com/community/)
 
-License
+Note that this repository is for the app itself (the user interface and the terminal emulation). For the packages installable inside the app, see [termux/termux-packages](https://github.com/termux/termux-packages)
-=======
-Released under [the GPLv3 license](https://www.gnu.org/licenses/gpl.html). Contains code from `Terminal Emulator for Android` which is released under [the Apache License 2.0](https://www.apache.org/licenses/).
-
-Building JNI libraries
-======================
-Execute the `build-jnilibs.sh` script to build the required JNI libraries.
 
 Terminal resources
 ==================

app/build.gradle

@@ -1,30 +1,27 @@
 apply plugin: 'com.android.application'
 
 android {
-    compileSdkVersion 23
+    compileSdkVersion 25
-    buildToolsVersion "23.0.2"
+    buildToolsVersion "25.0.3"
 
     dependencies {
-        compile 'com.android.support:support-annotations:23.1.1'
+        compile 'com.android.support:support-annotations:25.3.1'
-    }
+        compile "com.android.support:support-v4:25.3.1"
-
+        compile project(":terminal-view")
-    sourceSets {
-        main {
-            jni.srcDirs = []
-        }
     }
 
     defaultConfig {
         applicationId "com.termux"
         minSdkVersion 21
-        targetSdkVersion 23
+        targetSdkVersion 25
-        versionCode 31
+        versionCode 50
-        versionName "0.31"
+        versionName "0.50"
     }
 
     buildTypes {
         release {
-            minifyEnabled false
+            minifyEnabled true
+            shrinkResources true
             proguardFiles getDefaultProguardFile('proguard-android.txt'), 'proguard-rules.pro'
         }
     }

app/src/androidTest/java/com/termux/ApplicationTest.java

@@ -1,13 +0,0 @@
-package com.termux;
-
-import android.app.Application;
-import android.test.ApplicationTestCase;
-
-/**
- * <a href="http://d.android.com/tools/testing/testing_android.html">Testing Fundamentals</a>
- */
-public class ApplicationTest extends ApplicationTestCase<Application> {
-    public ApplicationTest() {
-        super(Application.class);
-    }
-}

app/src/main/AndroidManifest.xml

@@ -13,9 +13,11 @@
     <uses-permission android:name="android.permission.VIBRATE" />
 
     <application
+        android:extractNativeLibs="true"
         android:allowBackup="true"
         android:fullBackupContent="@xml/backupscheme"
-        android:icon="@drawable/ic_launcher"
+        android:icon="@mipmap/ic_launcher"
+        android:roundIcon="@mipmap/ic_launcher_round"
         android:banner="@drawable/banner"
         android:label="@string/application_name"
         android:theme="@style/Theme.Termux"
@@ -34,6 +36,7 @@
                 <action android:name="android.intent.action.MAIN" />
                 <category android:name="android.intent.category.LEANBACK_LAUNCHER" />
             </intent-filter>
+            <meta-data android:name="android.app.shortcuts" android:resource="@xml/shortcuts" />
         </activity>
 
         <activity
@@ -49,44 +52,53 @@
             android:taskAffinity="com.termux.filereceiver"
             android:excludeFromRecents="true"
             android:noHistory="true">
+            <!-- Accept multiple file types when sending. -->
             <intent-filter>
-                <action android:name="android.intent.action.VIEW" />
-                <action android:name="android.intent.action.EDIT" />
                 <action android:name="android.intent.action.SEND"/>
                 <category android:name="android.intent.category.DEFAULT" />
-                <data android:mimeType="*/*" />
+                <data android:mimeType="application/*" />
+                <data android:mimeType="audio/*" />
+                <data android:mimeType="image/*" />
+                <data android:mimeType="message/*" />
+                <data android:mimeType="multipart/*" />
+                <data android:mimeType="text/*" />
+                <data android:mimeType="video/*" />
             </intent-filter>
-        </activity>
+            <!-- Be more restrictive for viewing files, restricting ourselves to text files. -->
-
-        <activity
-            android:name="com.termux.filepicker.TermuxFilePickerActivity"
-            android:label="@string/application_name"
-            android:theme="@android:style/Theme.Material.Light.DarkActionBar"
-            android:noHistory="true">
             <intent-filter>
-                <!--
+                <action android:name="android.intent.action.VIEW"/>
-                  http://stackoverflow.com/questions/6486716/using-intent-action-pick-for-specific-path
-                  "That said, you should consider ACTION_PICK deprecated. The modern action is ACTION_GET_CONTENT
-                  which is much better supported; you will find support of ACTION_PICK spotty and inconsistent.
-                  Unfortunately ACTION_GET_CONTENT also does not let you specify a directory."
-                -->
-                <action android:name="android.intent.action.GET_CONTENT" />
                 <category android:name="android.intent.category.DEFAULT" />
-                <category android:name="android.intent.category.OPENABLE" />
+                <data android:mimeType="text/*" />
-                <data android:mimeType="*/*" />
+                <data android:mimeType="application/json" />
+                <data android:mimeType="application/*xml*" />
+                <data android:mimeType="application/*latex*" />
+                <data android:mimeType="application/javascript" />
             </intent-filter>
         </activity>
 
-        <provider android:authorities="com.termux.filepicker.provider"
+        <provider
-            android:readPermission="com.termux.filepickder.READ"
+            android:name=".filepicker.TermuxDocumentsProvider"
-            android:exported="true"
+            android:authorities="com.termux.documents"
             android:grantUriPermissions="true"
-            android:name="com.termux.filepicker.TermuxFilePickerProvider" />
+            android:exported="true"
+            android:permission="android.permission.MANAGE_DOCUMENTS">
+            <intent-filter>
+                <action android:name="android.content.action.DOCUMENTS_PROVIDER" />
+            </intent-filter>
+        </provider>
 
         <service
             android:name="com.termux.app.TermuxService"
             android:exported="false" />
 
+        <receiver android:name=".app.TermuxOpenReceiver" />
+
+        <provider android:authorities="com.termux.files"
+                  android:readPermission="android.permission.permRead"
+                  android:exported="true"
+                  android:grantUriPermissions="true"
+                  android:name="com.termux.app.TermuxOpenReceiver$ContentProvider" />
+
     </application>
 
 </manifest>

app/src/main/java/com/termux/app/BackgroundJob.java

@@ -0,0 +1,193 @@
+package com.termux.app;
+
+import android.util.Log;
+
+import java.io.BufferedReader;
+import java.io.File;
+import java.io.FileInputStream;
+import java.io.IOException;
+import java.io.InputStream;
+import java.io.InputStreamReader;
+import java.lang.reflect.Field;
+import java.nio.charset.StandardCharsets;
+import java.util.ArrayList;
+import java.util.Arrays;
+import java.util.Collections;
+import java.util.List;
+
+/**
+ * A background job launched by Termux.
+ */
+public final class BackgroundJob {
+
+    private static final String LOG_TAG = "termux-task";
+
+    final Process mProcess;
+
+    public BackgroundJob(String cwd, String fileToExecute, final String[] args, final TermuxService service) {
+        String[] env = buildEnvironment(false, cwd);
+        if (cwd == null) cwd = TermuxService.HOME_PATH;
+
+        final String[] progArray = setupProcessArgs(fileToExecute, args);
+        final String processDescription = Arrays.toString(progArray);
+
+        Process process;
+        try {
+            process = Runtime.getRuntime().exec(progArray, env, new File(cwd));
+        } catch (IOException e) {
+            mProcess = null;
+            // TODO: Visible error message?
+            Log.e(LOG_TAG, "Failed running background job: " + processDescription, e);
+            return;
+        }
+
+        mProcess = process;
+        final int pid = getPid(mProcess);
+
+        new Thread() {
+            @Override
+            public void run() {
+                Log.i(LOG_TAG, "[" + pid + "] starting: " + processDescription);
+                InputStream stdout = mProcess.getInputStream();
+                BufferedReader reader = new BufferedReader(new InputStreamReader(stdout, StandardCharsets.UTF_8));
+                String line;
+                try {
+                    // FIXME: Long lines.
+                    while ((line = reader.readLine()) != null) {
+                        Log.i(LOG_TAG, "[" + pid + "] stdout: " + line);
+                    }
+                } catch (IOException e) {
+                    Log.e(LOG_TAG, "Error reading output", e);
+                }
+
+                try {
+                    int exitCode = mProcess.waitFor();
+                    service.onBackgroundJobExited(BackgroundJob.this);
+                    if (exitCode == 0) {
+                        Log.i(LOG_TAG, "[" + pid + "] exited normally");
+                    } else {
+                        Log.w(LOG_TAG, "[" + pid + "] exited with code: " + exitCode);
+                    }
+                } catch (InterruptedException e) {
+                    // Ignore.
+                }
+            }
+        }.start();
+
+
+        new Thread() {
+            @Override
+            public void run() {
+                InputStream stderr = mProcess.getErrorStream();
+                BufferedReader reader = new BufferedReader(new InputStreamReader(stderr, StandardCharsets.UTF_8));
+                String line;
+                try {
+                    // FIXME: Long lines.
+                    while ((line = reader.readLine()) != null) {
+                        Log.i(LOG_TAG, "[" + pid + "] stderr: " + line);
+                    }
+                } catch (IOException e) {
+                    // Ignore.
+                }
+            }
+        };
+    }
+
+    public static String[] buildEnvironment(boolean failSafe, String cwd) {
+        new File(TermuxService.HOME_PATH).mkdirs();
+
+        if (cwd == null) cwd = TermuxService.HOME_PATH;
+
+        final String termEnv = "TERM=xterm-256color";
+        final String homeEnv = "HOME=" + TermuxService.HOME_PATH;
+        final String prefixEnv = "PREFIX=" + TermuxService.PREFIX_PATH;
+        final String androidRootEnv = "ANDROID_ROOT=" + System.getenv("ANDROID_ROOT");
+        final String androidDataEnv = "ANDROID_DATA=" + System.getenv("ANDROID_DATA");
+        // EXTERNAL_STORAGE is needed for /system/bin/am to work on at least
+        // Samsung S7 - see https://plus.google.com/110070148244138185604/posts/gp8Lk3aCGp3.
+        final String externalStorageEnv = "EXTERNAL_STORAGE=" + System.getenv("EXTERNAL_STORAGE");
+        if (failSafe) {
+            // Keep the default path so that system binaries can be used in the failsafe session.
+            final String pathEnv = "PATH=" + System.getenv("PATH");
+            return new String[]{termEnv, homeEnv, prefixEnv, androidRootEnv, androidDataEnv, pathEnv, externalStorageEnv};
+        } else {
+            final String ps1Env = "PS1=$ ";
+            final String ldEnv = "LD_LIBRARY_PATH=" + TermuxService.PREFIX_PATH + "/lib";
+            final String langEnv = "LANG=en_US.UTF-8";
+            final String pathEnv = "PATH=" + TermuxService.PREFIX_PATH + "/bin:" + TermuxService.PREFIX_PATH + "/bin/applets";
+            final String pwdEnv = "PWD=" + cwd;
+            final String tmpdirEnv = "TMPDIR=" + TermuxService.PREFIX_PATH + "/tmp";
+
+            return new String[]{termEnv, homeEnv, prefixEnv, ps1Env, ldEnv, langEnv, pathEnv, pwdEnv, androidRootEnv, androidDataEnv, externalStorageEnv, tmpdirEnv};
+        }
+    }
+
+    public static int getPid(Process p) {
+        try {
+            Field f = p.getClass().getDeclaredField("pid");
+            f.setAccessible(true);
+            try {
+                return f.getInt(p);
+            } finally {
+                f.setAccessible(false);
+            }
+        } catch (Throwable e) {
+            return -1;
+        }
+    }
+
+    static String[] setupProcessArgs(String fileToExecute, String[] args) {
+        // The file to execute may either be:
+        // - An elf file, in which we execute it directly.
+        // - A script file without shebang, which we execute with our standard shell $PREFIX/bin/sh instead of the
+        //   system /system/bin/sh. The system shell may vary and may not work at all due to LD_LIBRARY_PATH.
+        // - A file with shebang, which we try to handle with e.g. /bin/foo -> $PREFIX/bin/foo.
+        String interpreter = null;
+        try {
+            File file = new File(fileToExecute);
+            try (FileInputStream in = new FileInputStream(file)) {
+                byte[] buffer = new byte[256];
+                int bytesRead = in.read(buffer);
+                if (bytesRead > 4) {
+                    if (buffer[0] == 0x7F && buffer[1] == 'E' && buffer[2] == 'L' && buffer[3] == 'F') {
+                        // Elf file, do nothing.
+                    } else if (buffer[0] == '#' && buffer[1] == '!') {
+                        // Try to parse shebang.
+                        StringBuilder builder = new StringBuilder();
+                        for (int i = 2; i < bytesRead; i++) {
+                            char c = (char) buffer[i];
+                            if (c == ' ' || c == '\n') {
+                                if (builder.length() == 0) {
+                                    // Skip whitespace after shebang.
+                                } else {
+                                    // End of shebang.
+                                    String executable = builder.toString();
+                                    if (executable.startsWith("/usr") || executable.startsWith("/bin")) {
+                                        String[] parts = executable.split("/");
+                                        String binary = parts[parts.length - 1];
+                                        interpreter = TermuxService.PREFIX_PATH + "/bin/" + binary;
+                                    }
+                                    break;
+                                }
+                            } else {
+                                builder.append(c);
+                            }
+                        }
+                    } else {
+                        // No shebang and no ELF, use standard shell.
+                        interpreter = TermuxService.PREFIX_PATH + "/bin/sh";
+                    }
+                }
+            }
+        } catch (IOException e) {
+            // Ignore.
+        }
+
+        List<String> result = new ArrayList<>();
+        if (interpreter != null) result.add(interpreter);
+        result.add(fileToExecute);
+        if (args != null) Collections.addAll(result, args);
+        return result.toArray(new String[result.size()]);
+    }
+
+}

app/src/main/java/com/termux/app/DialogUtils.java

@@ -13,52 +13,52 @@ import android.widget.TextView;
 
 public final class DialogUtils {
 
-	public interface TextSetListener {
+    public interface TextSetListener {
-		void onTextSet(String text);
+        void onTextSet(String text);
-	}
+    }
 
-	public static void textInput(Activity activity, int titleText, String initialText,
+    public static void textInput(Activity activity, int titleText, String initialText,
                                  int positiveButtonText, final TextSetListener onPositive,
                                  int neutralButtonText, final TextSetListener onNeutral,
                                  int negativeButtonText, final TextSetListener onNegative,
                                  final DialogInterface.OnDismissListener onDismiss) {
-		final EditText input = new EditText(activity);
+        final EditText input = new EditText(activity);
-		input.setSingleLine();
+        input.setSingleLine();
-		if (initialText != null) {
+        if (initialText != null) {
-			input.setText(initialText);
+            input.setText(initialText);
-			Selection.setSelection(input.getText(), initialText.length());
+            Selection.setSelection(input.getText(), initialText.length());
-		}
+        }
 
-		final AlertDialog[] dialogHolder = new AlertDialog[1];
+        final AlertDialog[] dialogHolder = new AlertDialog[1];
-		input.setImeActionLabel(activity.getResources().getString(positiveButtonText), KeyEvent.KEYCODE_ENTER);
+        input.setImeActionLabel(activity.getResources().getString(positiveButtonText), KeyEvent.KEYCODE_ENTER);
-		input.setOnEditorActionListener(new TextView.OnEditorActionListener() {
+        input.setOnEditorActionListener(new TextView.OnEditorActionListener() {
-			@Override
+            @Override
-			public boolean onEditorAction(TextView v, int actionId, KeyEvent event) {
+            public boolean onEditorAction(TextView v, int actionId, KeyEvent event) {
-				onPositive.onTextSet(input.getText().toString());
+                onPositive.onTextSet(input.getText().toString());
-				dialogHolder[0].dismiss();
+                dialogHolder[0].dismiss();
-				return true;
+                return true;
-			}
+            }
-		});
+        });
 
-		float dipInPixels = TypedValue.applyDimension(TypedValue.COMPLEX_UNIT_DIP, 1, activity.getResources().getDisplayMetrics());
+        float dipInPixels = TypedValue.applyDimension(TypedValue.COMPLEX_UNIT_DIP, 1, activity.getResources().getDisplayMetrics());
-		// https://www.google.com/design/spec/components/dialogs.html#dialogs-specs
+        // https://www.google.com/design/spec/components/dialogs.html#dialogs-specs
-		int paddingTopAndSides = Math.round(16 * dipInPixels);
+        int paddingTopAndSides = Math.round(16 * dipInPixels);
-		int paddingBottom = Math.round(24 * dipInPixels);
+        int paddingBottom = Math.round(24 * dipInPixels);
 
-		LinearLayout layout = new LinearLayout(activity);
+        LinearLayout layout = new LinearLayout(activity);
-		layout.setOrientation(LinearLayout.VERTICAL);
+        layout.setOrientation(LinearLayout.VERTICAL);
-		layout.setLayoutParams(new LinearLayout.LayoutParams(LayoutParams.MATCH_PARENT, LayoutParams.WRAP_CONTENT));
+        layout.setLayoutParams(new LinearLayout.LayoutParams(LayoutParams.MATCH_PARENT, LayoutParams.WRAP_CONTENT));
-		layout.setPadding(paddingTopAndSides, paddingTopAndSides, paddingTopAndSides, paddingBottom);
+        layout.setPadding(paddingTopAndSides, paddingTopAndSides, paddingTopAndSides, paddingBottom);
-		layout.addView(input);
+        layout.addView(input);
 
-		AlertDialog.Builder builder = new AlertDialog.Builder(activity)
+        AlertDialog.Builder builder = new AlertDialog.Builder(activity)
-				.setTitle(titleText).setView(layout)
+            .setTitle(titleText).setView(layout)
-				.setPositiveButton(positiveButtonText, new DialogInterface.OnClickListener() {
+            .setPositiveButton(positiveButtonText, new DialogInterface.OnClickListener() {
-					@Override
+                @Override
-					public void onClick(DialogInterface d, int whichButton) {
+                public void onClick(DialogInterface d, int whichButton) {
-						onPositive.onTextSet(input.getText().toString());
+                    onPositive.onTextSet(input.getText().toString());
-				}
+                }
-			});
+            });
 
         if (onNeutral != null) {
             builder.setNeutralButton(neutralButtonText, new DialogInterface.OnClickListener() {
@@ -82,9 +82,9 @@ public final class DialogUtils {
 
         if (onDismiss != null) builder.setOnDismissListener(onDismiss);
 
-		dialogHolder[0] = builder.create();
+        dialogHolder[0] = builder.create();
         dialogHolder[0].setCanceledOnTouchOutside(false);
-		dialogHolder[0].show();
+        dialogHolder[0].show();
-	}
+    }
 
 }

app/src/main/java/com/termux/app/ExtraKeysView.java

@@ -0,0 +1,179 @@
+package com.termux.app;
+
+import android.content.Context;
+import android.util.AttributeSet;
+import android.view.Gravity;
+import android.view.HapticFeedbackConstants;
+import android.view.KeyEvent;
+import android.view.View;
+import android.widget.Button;
+import android.widget.GridLayout;
+import android.widget.ToggleButton;
+
+import com.termux.R;
+import com.termux.terminal.TerminalSession;
+import com.termux.view.TerminalView;
+
+/**
+ * A view showing extra keys (such as Escape, Ctrl, Alt) not normally available on an Android soft
+ * keyboard.
+ */
+public final class ExtraKeysView extends GridLayout {
+
+    private static final int TEXT_COLOR = 0xFFFFFFFF;
+
+    public ExtraKeysView(Context context, AttributeSet attrs) {
+        super(context, attrs);
+
+        reload();
+    }
+
+    static void sendKey(View view, String keyName) {
+        int keyCode = 0;
+        String chars = null;
+        switch (keyName) {
+            case "ESC":
+                keyCode = KeyEvent.KEYCODE_ESCAPE;
+                break;
+            case "TAB":
+                keyCode = KeyEvent.KEYCODE_TAB;
+                break;
+            case "▲":
+                keyCode = KeyEvent.KEYCODE_DPAD_UP;
+                break;
+            case "◀":
+                keyCode = KeyEvent.KEYCODE_DPAD_LEFT;
+                break;
+            case "▶":
+                keyCode = KeyEvent.KEYCODE_DPAD_RIGHT;
+                break;
+            case "▼":
+                keyCode = KeyEvent.KEYCODE_DPAD_DOWN;
+                break;
+            case "―":
+                chars = "-";
+                break;
+            default:
+                chars = keyName;
+        }
+
+        if (keyCode > 0) {
+            view.dispatchKeyEvent(new KeyEvent(KeyEvent.ACTION_DOWN, keyCode));
+            view.dispatchKeyEvent(new KeyEvent(KeyEvent.ACTION_UP, keyCode));
+        } else {
+            TerminalView terminalView = (TerminalView) view.findViewById(R.id.terminal_view);
+            TerminalSession session = terminalView.getCurrentSession();
+            if (session != null) session.write(chars);
+        }
+    }
+
+    private ToggleButton controlButton;
+    private ToggleButton altButton;
+    private ToggleButton fnButton;
+
+    public boolean readControlButton() {
+        if (controlButton.isPressed()) return true;
+        boolean result = controlButton.isChecked();
+        if (result) {
+            controlButton.setChecked(false);
+            controlButton.setTextColor(TEXT_COLOR);
+        }
+        return result;
+    }
+
+    public boolean readAltButton() {
+        if (altButton.isPressed()) return true;
+        boolean result = altButton.isChecked();
+        if (result) {
+            altButton.setChecked(false);
+            altButton.setTextColor(TEXT_COLOR);
+        }
+        return result;
+    }
+
+    public boolean readFnButton() {
+        if (fnButton.isPressed()) return true;
+        boolean result = fnButton.isChecked();
+        if (result) {
+            fnButton.setChecked(false);
+            fnButton.setTextColor(TEXT_COLOR);
+        }
+        return result;
+    }
+
+    void reload() {
+        altButton = controlButton = null;
+        removeAllViews();
+
+        String[][] buttons = {
+            {"ESC", "CTRL", "ALT", "TAB", "―", "/", "|"}
+        };
+
+        final int rows = buttons.length;
+        final int cols = buttons[0].length;
+
+        setRowCount(rows);
+        setColumnCount(cols);
+
+        for (int row = 0; row < rows; row++) {
+            for (int col = 0; col < cols; col++) {
+                final String buttonText = buttons[row][col];
+
+                Button button;
+                switch (buttonText) {
+                    case "CTRL":
+                        button = controlButton = new ToggleButton(getContext(), null, android.R.attr.buttonBarButtonStyle);
+                        button.setClickable(true);
+                        break;
+                    case "ALT":
+                        button = altButton = new ToggleButton(getContext(), null, android.R.attr.buttonBarButtonStyle);
+                        button.setClickable(true);
+                        break;
+                    case "FN":
+                        button = fnButton = new ToggleButton(getContext(), null, android.R.attr.buttonBarButtonStyle);
+                        button.setClickable(true);
+                        break;
+                    default:
+                        button = new Button(getContext(), null, android.R.attr.buttonBarButtonStyle);
+                        break;
+                }
+
+                button.setText(buttonText);
+                button.setTextColor(TEXT_COLOR);
+
+                final Button finalButton = button;
+                button.setOnClickListener(new OnClickListener() {
+                    @Override
+                    public void onClick(View v) {
+                        finalButton.performHapticFeedback(HapticFeedbackConstants.KEYBOARD_TAP);
+                        View root = getRootView();
+                        switch (buttonText) {
+                            case "CTRL":
+                            case "ALT":
+                            case "FN":
+                                ToggleButton self = (ToggleButton) finalButton;
+                                self.setChecked(self.isChecked());
+                                self.setTextColor(self.isChecked() ? 0xFF80DEEA : TEXT_COLOR);
+                                break;
+                            default:
+                                sendKey(root, buttonText);
+                                break;
+                        }
+                    }
+                });
+
+                GridLayout.LayoutParams param = new GridLayout.LayoutParams();
+                param.height = param.width = 0;
+                param.rightMargin = param.topMargin = 0;
+                param.setGravity(Gravity.LEFT);
+                float weight = "▲▼◀▶".contains(buttonText) ? 0.7f : 1.f;
+                param.columnSpec = GridLayout.spec(col, GridLayout.FILL, weight);
+                param.rowSpec = GridLayout.spec(row, GridLayout.FILL, 1.f);
+                button.setLayoutParams(param);
+
+                addView(button);
+            }
+        }
+    }
+
+}

app/src/main/java/com/termux/app/FullScreenHelper.java

@@ -1,68 +1,67 @@
 package com.termux.app;
 
-import android.app.Activity;
+import android.graphics.Color;
-import android.graphics.Rect;
+import android.graphics.drawable.ColorDrawable;
+import android.os.Build;
 import android.view.View;
-import android.view.ViewTreeObserver;
+
-import android.view.Window;
+import com.termux.R;
-import android.view.WindowManager;
-import android.widget.FrameLayout;
-import android.widget.FrameLayout.LayoutParams;
 
 /**
- * Utility to make the touch keyboard and immersive mode work with full screen activities.
+ * Utility to manage full screen immersive mode.
- * 
+ * <p/>
  * See https://code.google.com/p/android/issues/detail?id=5497
  */
-final class FullScreenHelper implements ViewTreeObserver.OnGlobalLayoutListener {
+final class FullScreenHelper {
 
-	private boolean mEnabled = false;
+    private boolean mEnabled = false;
-	private final Activity mActivity;
+    final TermuxActivity mActivity;
-	private final Rect mWindowRect = new Rect();
 
-	public FullScreenHelper(Activity activity) {
+    public FullScreenHelper(TermuxActivity activity) {
-		this.mActivity = activity;
+        this.mActivity = activity;
-	}
+    }
 
-	public void setImmersive(boolean enabled) {
+    public void setImmersive(boolean enabled) {
-		Window win = mActivity.getWindow();
+        if (enabled == mEnabled) return;
+        mEnabled = enabled;
 
-		if (enabled == mEnabled) {
+        View decorView = mActivity.getWindow().getDecorView();
-			if (!enabled) win.setFlags(0, WindowManager.LayoutParams.FLAG_FULLSCREEN);
-			return;
-		}
-		mEnabled = enabled;
 
-		final View childViewOfContent = ((FrameLayout) mActivity.findViewById(android.R.id.content)).getChildAt(0);
+        if (enabled) {
-		if (enabled) {
+            decorView.setOnSystemUiVisibilityChangeListener
-			win.setFlags(WindowManager.LayoutParams.FLAG_FULLSCREEN, WindowManager.LayoutParams.FLAG_FULLSCREEN);
+                (new View.OnSystemUiVisibilityChangeListener() {
-			setImmersiveMode();
+                    @Override
-			childViewOfContent.getViewTreeObserver().addOnGlobalLayoutListener(this);
+                    public void onSystemUiVisibilityChange(int visibility) {
-		} else {
+                        if ((visibility & View.SYSTEM_UI_FLAG_FULLSCREEN) == 0) {
-			win.setFlags(0, WindowManager.LayoutParams.FLAG_FULLSCREEN);
+                            if (mActivity.mSettings.isShowExtraKeys()) {
-			win.getDecorView().setSystemUiVisibility(View.SYSTEM_UI_FLAG_VISIBLE);
+                                mActivity.findViewById(R.id.viewpager).setVisibility(View.VISIBLE);
-			childViewOfContent.getViewTreeObserver().removeOnGlobalLayoutListener(this);
+                            }
-			((LayoutParams) childViewOfContent.getLayoutParams()).height = android.view.ViewGroup.LayoutParams.MATCH_PARENT;
+                            setImmersiveMode();
-		}
+                        } else {
-	}
+                            mActivity.findViewById(R.id.viewpager).setVisibility(View.GONE);
+                        }
+                    }
+                });
+            setImmersiveMode();
+        } else {
+            decorView.setSystemUiVisibility(View.SYSTEM_UI_FLAG_VISIBLE);
+            decorView.setOnSystemUiVisibilityChangeListener(null);
+        }
+    }
 
-	private void setImmersiveMode() {
+    private static boolean isColorLight(int color) {
-		mActivity.getWindow().getDecorView().setSystemUiVisibility(View.SYSTEM_UI_FLAG_HIDE_NAVIGATION | View.SYSTEM_UI_FLAG_IMMERSIVE_STICKY);
+        double darkness = 1 - (0.299 * Color.red(color) + 0.587 * Color.green(color) + 0.114 * Color.blue(color)) / 255;
-	}
+        return darkness < 0.5;
+    }
 
-	@Override
+    void setImmersiveMode() {
-	public void onGlobalLayout() {
+        int flags = View.SYSTEM_UI_FLAG_HIDE_NAVIGATION
-		final View childViewOfContent = ((FrameLayout) mActivity.findViewById(android.R.id.content)).getChildAt(0);
+            | View.SYSTEM_UI_FLAG_IMMERSIVE_STICKY
-
+            | View.SYSTEM_UI_FLAG_FULLSCREEN;
-		if (mEnabled) setImmersiveMode();
+        int color = ((ColorDrawable) mActivity.getWindow().getDecorView().getBackground()).getColor();
-
+        if (Build.VERSION.SDK_INT >= Build.VERSION_CODES.M && isColorLight(color))
-		childViewOfContent.getWindowVisibleDisplayFrame(mWindowRect);
+            flags |= View.SYSTEM_UI_FLAG_LIGHT_STATUS_BAR;
-		int usableHeightNow = Math.min(mWindowRect.height(), childViewOfContent.getRootView().getHeight());
+        mActivity.getWindow().getDecorView().setSystemUiVisibility(flags);
-		FrameLayout.LayoutParams layout = (LayoutParams) childViewOfContent.getLayoutParams();
+    }
-		if (layout.height != usableHeightNow) {
-			layout.height = usableHeightNow;
-			childViewOfContent.requestLayout();
-		}
-	}
 
 }

app/src/main/java/com/termux/app/TermuxHelpActivity.java

@@ -15,61 +15,61 @@ import android.widget.RelativeLayout;
 /** Basic embedded browser for viewing help pages. */
 public final class TermuxHelpActivity extends Activity {
 
-	private WebView mWebView;
+    WebView mWebView;
 
-	@Override
+    @Override
-	protected void onCreate(Bundle savedInstanceState) {
+    protected void onCreate(Bundle savedInstanceState) {
-		super.onCreate(savedInstanceState);
+        super.onCreate(savedInstanceState);
 
-		final RelativeLayout progressLayout = new RelativeLayout(this);
+        final RelativeLayout progressLayout = new RelativeLayout(this);
-		RelativeLayout.LayoutParams lParams = new RelativeLayout.LayoutParams(ViewGroup.LayoutParams.WRAP_CONTENT, ViewGroup.LayoutParams.WRAP_CONTENT);
+        RelativeLayout.LayoutParams lParams = new RelativeLayout.LayoutParams(ViewGroup.LayoutParams.WRAP_CONTENT, ViewGroup.LayoutParams.WRAP_CONTENT);
-		lParams.addRule(RelativeLayout.CENTER_IN_PARENT);
+        lParams.addRule(RelativeLayout.CENTER_IN_PARENT);
-		ProgressBar progressBar = new ProgressBar(this);
+        ProgressBar progressBar = new ProgressBar(this);
-		progressBar.setIndeterminate(true);
+        progressBar.setIndeterminate(true);
-		progressBar.setLayoutParams(lParams);
+        progressBar.setLayoutParams(lParams);
-		progressLayout.addView(progressBar);
+        progressLayout.addView(progressBar);
 
-		mWebView = new WebView(this);
+        mWebView = new WebView(this);
-		WebSettings settings = mWebView.getSettings();
+        WebSettings settings = mWebView.getSettings();
-		settings.setCacheMode(WebSettings.LOAD_NO_CACHE);
+        settings.setCacheMode(WebSettings.LOAD_NO_CACHE);
-		settings.setAppCacheEnabled(false);
+        settings.setAppCacheEnabled(false);
-		setContentView(progressLayout);
+        setContentView(progressLayout);
-		mWebView.clearCache(true);
+        mWebView.clearCache(true);
 
-		mWebView.setWebViewClient(new WebViewClient() {
+        mWebView.setWebViewClient(new WebViewClient() {
-			@Override
+            @Override
-			public boolean shouldOverrideUrlLoading(WebView view, String url) {
+            public boolean shouldOverrideUrlLoading(WebView view, String url) {
-				if (url.startsWith("https://termux.com")) {
+                if (url.startsWith("https://termux.com")) {
-					// Inline help.
+                    // Inline help.
-					setContentView(progressLayout);
+                    setContentView(progressLayout);
-					return false;
+                    return false;
-				}
+                }
 
-				try {
+                try {
-					startActivity(new Intent(Intent.ACTION_VIEW, Uri.parse(url)).addFlags(Intent.FLAG_ACTIVITY_NEW_TASK));
+                    startActivity(new Intent(Intent.ACTION_VIEW, Uri.parse(url)).addFlags(Intent.FLAG_ACTIVITY_NEW_TASK));
-				} catch (ActivityNotFoundException e) {
+                } catch (ActivityNotFoundException e) {
-					// Android TV does not have a system browser.
+                    // Android TV does not have a system browser.
-					setContentView(progressLayout);
+                    setContentView(progressLayout);
-					return false;
+                    return false;
-				}
+                }
-				return true;
+                return true;
-			}
+            }
 
-			@Override
+            @Override
-			public void onPageFinished(WebView view, String url) {
+            public void onPageFinished(WebView view, String url) {
-				setContentView(mWebView);
+                setContentView(mWebView);
-			}
+            }
-		});
+        });
-		mWebView.loadUrl("https://termux.com/help.html");
+        mWebView.loadUrl("https://termux.com/help.html");
-	}
+    }
 
-	@Override
+    @Override
-	public void onBackPressed() {
+    public void onBackPressed() {
-		if (mWebView.canGoBack()) {
+        if (mWebView.canGoBack()) {
-			mWebView.goBack();
+            mWebView.goBack();
-		} else {
+        } else {
-			super.onBackPressed();
+            super.onBackPressed();
-		}
+        }
-	}
+    }
 
 }

app/src/main/java/com/termux/app/TermuxInstaller.java

@@ -7,7 +7,9 @@ import android.content.Context;
 import android.content.DialogInterface;
 import android.content.DialogInterface.OnClickListener;
 import android.content.DialogInterface.OnDismissListener;
+import android.os.Build;
 import android.os.Environment;
+import android.os.UserManager;
 import android.system.Os;
 import android.util.Log;
 import android.util.Pair;
@@ -23,231 +25,251 @@ import java.io.InputStreamReader;
 import java.net.MalformedURLException;
 import java.net.URL;
 import java.util.ArrayList;
+import java.util.Arrays;
 import java.util.List;
 import java.util.zip.ZipEntry;
 import java.util.zip.ZipInputStream;
 
 /**
  * Install the Termux bootstrap packages if necessary by following the below steps:
- * 
+ * <p/>
  * (1) If $PREFIX already exist, assume that it is correct and be done. Note that this relies on that we do not create a
  * broken $PREFIX folder below.
- * 
+ * <p/>
  * (2) A progress dialog is shown with "Installing..." message and a spinner.
- * 
+ * <p/>
  * (3) A staging folder, $STAGING_PREFIX, is {@link #deleteFolder(File)} if left over from broken installation below.
- * 
+ * <p/>
  * (4) The architecture is determined and an appropriate bootstrap zip url is determined in {@link #determineZipUrl()}.
- * 
+ * <p/>
  * (5) The zip, containing entries relative to the $PREFIX, is is downloaded and extracted by a zip input stream
  * continously encountering zip file entries:
- * 
+ * <p/>
  * (5.1) If the zip entry encountered is SYMLINKS.txt, go through it and remember all symlinks to setup.
- * 
+ * <p/>
  * (5.2) For every other zip entry, extract it into $STAGING_PREFIX and set execute permissions if necessary.
  */
 final class TermuxInstaller {
 
-	/** Performs setup if necessary. */
+    /** Performs setup if necessary. */
-	static void setupIfNeeded(final Activity activity, final Runnable whenDone) {
+    static void setupIfNeeded(final Activity activity, final Runnable whenDone) {
-		// Termux can only be run as the primary user (device owner) since only that
+        // Termux can only be run as the primary user (device owner) since only that
-		// account has the expected file system paths. Verify that:
+        // account has the expected file system paths. Verify that:
-		android.os.UserManager um = (android.os.UserManager) activity.getSystemService(Context.USER_SERVICE);
+        UserManager um = (UserManager) activity.getSystemService(Context.USER_SERVICE);
-		boolean isPrimaryUser = um.getSerialNumberForUser(android.os.Process.myUserHandle()) == 0;
+        boolean isPrimaryUser = um.getSerialNumberForUser(android.os.Process.myUserHandle()) == 0;
-		if (!isPrimaryUser) {
+        if (!isPrimaryUser) {
-			new AlertDialog.Builder(activity).setTitle(R.string.bootstrap_error_title).setMessage(R.string.bootstrap_error_not_primary_user_message)
+            new AlertDialog.Builder(activity).setTitle(R.string.bootstrap_error_title).setMessage(R.string.bootstrap_error_not_primary_user_message)
-					.setOnDismissListener(new OnDismissListener() {
+                .setOnDismissListener(new OnDismissListener() {
-						@Override
+                    @Override
-						public void onDismiss(DialogInterface dialog) {
+                    public void onDismiss(DialogInterface dialog) {
-							System.exit(0);
+                        System.exit(0);
-						}
+                    }
-					}).setPositiveButton(android.R.string.ok, null).show();
+                }).setPositiveButton(android.R.string.ok, null).show();
-			return;
+            return;
-		}
+        }
 
-		final File PREFIX_FILE = new File(TermuxService.PREFIX_PATH);
+        final File PREFIX_FILE = new File(TermuxService.PREFIX_PATH);
-		if (PREFIX_FILE.isDirectory()) {
+        if (PREFIX_FILE.isDirectory()) {
-			whenDone.run();
+            whenDone.run();
-			return;
+            return;
-		}
+        }
 
-		final ProgressDialog progress = ProgressDialog.show(activity, null, activity.getString(R.string.bootstrap_installer_body), true, false);
+        final ProgressDialog progress = ProgressDialog.show(activity, null, activity.getString(R.string.bootstrap_installer_body), true, false);
-		new Thread() {
+        new Thread() {
-			@Override
+            @Override
-			public void run() {
+            public void run() {
-				try {
+                try {
-					final String STAGING_PREFIX_PATH = TermuxService.FILES_PATH + "/usr-staging";
+                    final String STAGING_PREFIX_PATH = TermuxService.FILES_PATH + "/usr-staging";
-					final File STAGING_PREFIX_FILE = new File(STAGING_PREFIX_PATH);
+                    final File STAGING_PREFIX_FILE = new File(STAGING_PREFIX_PATH);
 
-					if (STAGING_PREFIX_FILE.exists()) {
+                    if (STAGING_PREFIX_FILE.exists()) {
-						deleteFolder(STAGING_PREFIX_FILE);
+                        deleteFolder(STAGING_PREFIX_FILE);
-					}
+                    }
 
-					final byte[] buffer = new byte[8096];
+                    final byte[] buffer = new byte[8096];
-					final List<Pair<String, String>> symlinks = new ArrayList<>(50);
+                    final List<Pair<String, String>> symlinks = new ArrayList<>(50);
 
-					final URL zipUrl = determineZipUrl();
+                    final URL zipUrl = determineZipUrl();
-					try (ZipInputStream zipInput = new ZipInputStream(zipUrl.openStream())) {
+                    try (ZipInputStream zipInput = new ZipInputStream(zipUrl.openStream())) {
-						ZipEntry zipEntry;
+                        ZipEntry zipEntry;
-						while ((zipEntry = zipInput.getNextEntry()) != null) {
+                        while ((zipEntry = zipInput.getNextEntry()) != null) {
-							if (zipEntry.getName().equals("SYMLINKS.txt")) {
+                            if (zipEntry.getName().equals("SYMLINKS.txt")) {
-								BufferedReader symlinksReader = new BufferedReader(new InputStreamReader(zipInput));
+                                BufferedReader symlinksReader = new BufferedReader(new InputStreamReader(zipInput));
-								String line;
+                                String line;
-								while ((line = symlinksReader.readLine()) != null) {
+                                while ((line = symlinksReader.readLine()) != null) {
-									String[] parts = line.split("←");
+                                    String[] parts = line.split("←");
-									if (parts.length != 2) throw new RuntimeException("Malformed symlink line: " + line);
+                                    if (parts.length != 2)
-									String oldPath = parts[0];
+                                        throw new RuntimeException("Malformed symlink line: " + line);
-									String newPath = STAGING_PREFIX_PATH + "/" + parts[1];
+                                    String oldPath = parts[0];
-									symlinks.add(Pair.create(oldPath, newPath));
+                                    String newPath = STAGING_PREFIX_PATH + "/" + parts[1];
-								}
+                                    symlinks.add(Pair.create(oldPath, newPath));
-							} else {
+                                }
-								String zipEntryName = zipEntry.getName();
+                            } else {
-								File targetFile = new File(STAGING_PREFIX_PATH, zipEntryName);
+                                String zipEntryName = zipEntry.getName();
-								if (zipEntry.isDirectory()) {
+                                File targetFile = new File(STAGING_PREFIX_PATH, zipEntryName);
-									if (!targetFile.mkdirs()) throw new RuntimeException("Failed to create directory: " + targetFile.getAbsolutePath());
+                                if (zipEntry.isDirectory()) {
-								} else {
+                                    if (!targetFile.mkdirs())
-									try (FileOutputStream outStream = new FileOutputStream(targetFile)) {
+                                        throw new RuntimeException("Failed to create directory: " + targetFile.getAbsolutePath());
-										int readBytes;
+                                } else {
-										while ((readBytes = zipInput.read(buffer)) != -1)
+                                    try (FileOutputStream outStream = new FileOutputStream(targetFile)) {
-											outStream.write(buffer, 0, readBytes);
+                                        int readBytes;
-									}
+                                        while ((readBytes = zipInput.read(buffer)) != -1)
-									if (zipEntryName.startsWith("bin/") || zipEntryName.startsWith("libexec") || zipEntryName.startsWith("lib/apt/methods")) {
+                                            outStream.write(buffer, 0, readBytes);
-										//noinspection OctalInteger
+                                    }
-										Os.chmod(targetFile.getAbsolutePath(), 0700);
+                                    if (zipEntryName.startsWith("bin/") || zipEntryName.startsWith("libexec") || zipEntryName.startsWith("lib/apt/methods")) {
-									}
+                                        //noinspection OctalInteger
-								}
+                                        Os.chmod(targetFile.getAbsolutePath(), 0700);
-							}
+                                    }
-						}
+                                }
-					}
+                            }
+                        }
+                    }
 
-					if (symlinks.isEmpty()) throw new RuntimeException("No SYMLINKS.txt encountered");
+                    if (symlinks.isEmpty())
-					for (Pair<String, String> symlink : symlinks) {
+                        throw new RuntimeException("No SYMLINKS.txt encountered");
-						Os.symlink(symlink.first, symlink.second);
+                    for (Pair<String, String> symlink : symlinks) {
-					}
+                        Os.symlink(symlink.first, symlink.second);
+                    }
 
-					if (!STAGING_PREFIX_FILE.renameTo(PREFIX_FILE)) {
+                    if (!STAGING_PREFIX_FILE.renameTo(PREFIX_FILE)) {
-						throw new RuntimeException("Unable to rename staging folder");
+                        throw new RuntimeException("Unable to rename staging folder");
-					}
+                    }
 
-					activity.runOnUiThread(new Runnable() {
+                    activity.runOnUiThread(new Runnable() {
-						@Override
+                        @Override
-						public void run() {
+                        public void run() {
-							whenDone.run();
+                            whenDone.run();
-						}
+                        }
-					});
+                    });
-				} catch (final Exception e) {
+                } catch (final Exception e) {
-					Log.e(EmulatorDebug.LOG_TAG, "Bootstrap error", e);
+                    Log.e(EmulatorDebug.LOG_TAG, "Bootstrap error", e);
-					activity.runOnUiThread(new Runnable() {
+                    activity.runOnUiThread(new Runnable() {
-						@Override
+                        @Override
-						public void run() {
+                        public void run() {
-							try {
+                            try {
-								new AlertDialog.Builder(activity).setTitle(R.string.bootstrap_error_title).setMessage(R.string.bootstrap_error_body)
+                                new AlertDialog.Builder(activity).setTitle(R.string.bootstrap_error_title).setMessage(R.string.bootstrap_error_body)
-										.setNegativeButton(R.string.bootstrap_error_abort, new OnClickListener() {
+                                    .setNegativeButton(R.string.bootstrap_error_abort, new OnClickListener() {
-											@Override
+                                        @Override
-											public void onClick(DialogInterface dialog, int which) {
+                                        public void onClick(DialogInterface dialog, int which) {
-												dialog.dismiss();
+                                            dialog.dismiss();
-												activity.finish();
+                                            activity.finish();
-											}
+                                        }
-										}).setPositiveButton(R.string.bootstrap_error_try_again, new OnClickListener() {
+                                    }).setPositiveButton(R.string.bootstrap_error_try_again, new OnClickListener() {
-									@Override
+                                    @Override
-									public void onClick(DialogInterface dialog, int which) {
+                                    public void onClick(DialogInterface dialog, int which) {
-										dialog.dismiss();
+                                        dialog.dismiss();
-										TermuxInstaller.setupIfNeeded(activity, whenDone);
+                                        TermuxInstaller.setupIfNeeded(activity, whenDone);
-									}
+                                    }
-								}).show();
+                                }).show();
-							} catch (WindowManager.BadTokenException e) {
+                            } catch (WindowManager.BadTokenException e) {
-								// Activity already dismissed - ignore.
+                                // Activity already dismissed - ignore.
-							}
+                            }
-						}
+                        }
-					});
+                    });
-				} finally {
+                } finally {
-					activity.runOnUiThread(new Runnable() {
+                    activity.runOnUiThread(new Runnable() {
-						@Override
+                        @Override
-						public void run() {
+                        public void run() {
-							try {
+                            try {
-								progress.dismiss();
+                                progress.dismiss();
-							} catch (RuntimeException e) {
+                            } catch (RuntimeException e) {
-								// Activity already dismissed - ignore.
+                                // Activity already dismissed - ignore.
-							}
+                            }
-						}
+                        }
-					});
+                    });
-				}
+                }
-			}
+            }
-		}.start();
+        }.start();
-	}
+    }
 
     /** Get bootstrap zip url for this systems cpu architecture. */
     static URL determineZipUrl() throws MalformedURLException {
-        String arch = System.getProperty("os.arch");
+        String archName = determineTermuxArchName();
-        if (arch.startsWith("armv8")) {
+        return new URL("https://termux.net/bootstrap/bootstrap-" + archName + ".zip");
-            arch = "aarch64";
-        } else if (arch.startsWith("arm")) {
-            // Handle different arm variants such as armv7l:
-            arch = "arm";
-        } else if (arch.startsWith("x86")) { // "x86" on arcwelder, "x86_64" on 64-bit android.
-            arch = "i686";
-        }
-        return new URL("https://termux.net/bootstrap/bootstrap-" + arch + ".zip");
     }
 
-	/** Delete a folder and all its content or throw. */
+    private static String determineTermuxArchName() {
-	static void deleteFolder(File fileOrDirectory) {
+        // Note that we cannot use System.getProperty("os.arch") since that may give e.g. "aarch64"
-		File[] children = fileOrDirectory.listFiles();
+        // while a 64-bit runtime may not be installed (like on the Samsung Galaxy S5 Neo).
-		if (children != null) {
+        // Instead we search through the supported abi:s on the device, see:
-			for (File child : children) {
+        // http://developer.android.com/ndk/guides/abis.html
-				deleteFolder(child);
+        // Note that we search for abi:s in preferred order (the ordering of the
-			}
+        // Build.SUPPORTED_ABIS list) to avoid e.g. installing arm on an x86 system where arm
-		}
+        // emulation is available.
-		if (!fileOrDirectory.delete()) {
+        for (String androidArch : Build.SUPPORTED_ABIS) {
-			throw new RuntimeException("Unable to delete " + (fileOrDirectory.isDirectory() ? "directory " : "file ") + fileOrDirectory.getAbsolutePath());
+            switch (androidArch) {
-		}
+                case "arm64-v8a": return "aarch64";
-	}
+                case "armeabi-v7a": return "arm";
+                case "x86_64": return "x86_64";
+                case "x86": return "i686";
+            }
+        }
+        throw new RuntimeException("Unable to determine arch from Build.SUPPORTED_ABIS =  " +
+            Arrays.toString(Build.SUPPORTED_ABIS));
+    }
 
-	public static void setupStorageSymlinks(final Context context) {
+    /** Delete a folder and all its content or throw. */
-		final String LOG_TAG = "termux-storage";
+    static void deleteFolder(File fileOrDirectory) {
-		new Thread() {
+        File[] children = fileOrDirectory.listFiles();
-			public void run() {
+        if (children != null) {
-				try {
+            for (File child : children) {
-					File storageDir = new File(TermuxService.HOME_PATH, "storage");
+                deleteFolder(child);
+            }
+        }
+        if (!fileOrDirectory.delete()) {
+            throw new RuntimeException("Unable to delete " + (fileOrDirectory.isDirectory() ? "directory " : "file ") + fileOrDirectory.getAbsolutePath());
+        }
+    }
 
-					if (storageDir.exists() && !storageDir.delete()) {
+    public static void setupStorageSymlinks(final Context context) {
-						Log.e(LOG_TAG, "Could not delete old $HOME/storage");
+        final String LOG_TAG = "termux-storage";
-						return;
+        new Thread() {
-					}
+            public void run() {
+                try {
+                    File storageDir = new File(TermuxService.HOME_PATH, "storage");
 
-					if (!storageDir.mkdirs()) {
+                    if (storageDir.exists() && !storageDir.delete()) {
-						Log.e(LOG_TAG, "Unable to mkdirs() for $HOME/storage");
+                        Log.e(LOG_TAG, "Could not delete old $HOME/storage");
-						return;
+                        return;
-					}
+                    }
 
-					File sharedDir = Environment.getExternalStorageDirectory();
+                    if (!storageDir.mkdirs()) {
-					Os.symlink(sharedDir.getAbsolutePath(), new File(storageDir, "shared").getAbsolutePath());
+                        Log.e(LOG_TAG, "Unable to mkdirs() for $HOME/storage");
+                        return;
+                    }
 
-					File downloadsDir = Environment.getExternalStoragePublicDirectory(Environment.DIRECTORY_DOWNLOADS);
+                    File sharedDir = Environment.getExternalStorageDirectory();
-					Os.symlink(downloadsDir.getAbsolutePath(), new File(storageDir, "downloads").getAbsolutePath());
+                    Os.symlink(sharedDir.getAbsolutePath(), new File(storageDir, "shared").getAbsolutePath());
 
-					File dcimDir = Environment.getExternalStoragePublicDirectory(Environment.DIRECTORY_DCIM);
+                    File downloadsDir = Environment.getExternalStoragePublicDirectory(Environment.DIRECTORY_DOWNLOADS);
-					Os.symlink(dcimDir.getAbsolutePath(), new File(storageDir, "dcim").getAbsolutePath());
+                    Os.symlink(downloadsDir.getAbsolutePath(), new File(storageDir, "downloads").getAbsolutePath());
 
-					File picturesDir = Environment.getExternalStoragePublicDirectory(Environment.DIRECTORY_PICTURES);
+                    File dcimDir = Environment.getExternalStoragePublicDirectory(Environment.DIRECTORY_DCIM);
-					Os.symlink(picturesDir.getAbsolutePath(), new File(storageDir, "pictures").getAbsolutePath());
+                    Os.symlink(dcimDir.getAbsolutePath(), new File(storageDir, "dcim").getAbsolutePath());
 
-					File musicDir = Environment.getExternalStoragePublicDirectory(Environment.DIRECTORY_MUSIC);
+                    File picturesDir = Environment.getExternalStoragePublicDirectory(Environment.DIRECTORY_PICTURES);
-					Os.symlink(musicDir.getAbsolutePath(), new File(storageDir, "music").getAbsolutePath());
+                    Os.symlink(picturesDir.getAbsolutePath(), new File(storageDir, "pictures").getAbsolutePath());
 
-					File moviesDir = Environment.getExternalStoragePublicDirectory(Environment.DIRECTORY_MOVIES);
+                    File musicDir = Environment.getExternalStoragePublicDirectory(Environment.DIRECTORY_MUSIC);
-					Os.symlink(moviesDir.getAbsolutePath(), new File(storageDir, "movies").getAbsolutePath());
+                    Os.symlink(musicDir.getAbsolutePath(), new File(storageDir, "music").getAbsolutePath());
 
-					final File[] dirs = context.getExternalFilesDirs(null);
+                    File moviesDir = Environment.getExternalStoragePublicDirectory(Environment.DIRECTORY_MOVIES);
-					if (dirs != null && dirs.length >= 2) {
+                    Os.symlink(moviesDir.getAbsolutePath(), new File(storageDir, "movies").getAbsolutePath());
-						final File externalDir = dirs[1];
+
-						Os.symlink(externalDir.getAbsolutePath(), new File(storageDir, "external").getAbsolutePath());
+                    final File[] dirs = context.getExternalFilesDirs(null);
-					}
+                    if (dirs != null && dirs.length > 1) {
-				} catch (Exception e) {
+                        for (int i = 1; i < dirs.length; i++) {
-					Log.e(LOG_TAG, "Error setting up link", e);
+                            File dir = dirs[i];
-				}
+                            if (dir == null) continue;
-			}
+                            String symlinkName = "external-" + i;
-		}.start();
+                            Os.symlink(dir.getAbsolutePath(), new File(storageDir, symlinkName).getAbsolutePath());
-	}
+                        }
+                    }
+                } catch (Exception e) {
+                    Log.e(LOG_TAG, "Error setting up link", e);
+                }
+            }
+        }.start();
+    }
 
 }

app/src/main/java/com/termux/app/TermuxOpenReceiver.java

@@ -0,0 +1,178 @@
+package com.termux.app;
+
+import android.content.ActivityNotFoundException;
+import android.content.BroadcastReceiver;
+import android.content.ContentValues;
+import android.content.Context;
+import android.content.Intent;
+import android.database.Cursor;
+import android.database.MatrixCursor;
+import android.net.Uri;
+import android.os.ParcelFileDescriptor;
+import android.provider.MediaStore;
+import android.support.annotation.NonNull;
+import android.util.Log;
+import android.webkit.MimeTypeMap;
+
+import com.termux.terminal.EmulatorDebug;
+
+import java.io.File;
+import java.io.FileNotFoundException;
+
+public class TermuxOpenReceiver extends BroadcastReceiver {
+
+    @Override
+    public void onReceive(Context context, Intent intent) {
+        final Uri data = intent.getData();
+        if (data == null) {
+            Log.e(EmulatorDebug.LOG_TAG, "termux-open: Called without intent data");
+            return;
+        }
+
+        final String filePath = data.getPath();
+        final String contentTypeExtra = intent.getStringExtra("content-type");
+        final boolean useChooser = intent.getBooleanExtra("chooser", false);
+        final String intentAction = intent.getAction() == null ? Intent.ACTION_VIEW : intent.getAction();
+        switch (intentAction) {
+            case Intent.ACTION_SEND:
+            case Intent.ACTION_VIEW:
+                // Ok.
+                break;
+            default:
+                Log.e(EmulatorDebug.LOG_TAG, "Invalid action '" + intentAction + "', using 'view'");
+                break;
+        }
+
+        final boolean isExternalUrl = data.getScheme() != null && !data.getScheme().equals("file");
+        if (isExternalUrl) {
+            Intent urlIntent = new Intent(intentAction, data);
+            if (intentAction.equals(Intent.ACTION_SEND)) {
+                urlIntent.putExtra(Intent.EXTRA_TEXT, data.toString());
+                urlIntent.setData(null);
+            } else if (contentTypeExtra != null) {
+                urlIntent.setDataAndType(data, contentTypeExtra);
+            }
+            urlIntent.addFlags(Intent.FLAG_ACTIVITY_NEW_TASK);
+            try {
+                context.startActivity(urlIntent);
+            } catch (ActivityNotFoundException e) {
+                Log.e(EmulatorDebug.LOG_TAG, "termux-open: No app handles the url " + data);
+            }
+            return;
+        }
+
+        final File fileToShare = new File(filePath);
+        if (!(fileToShare.isFile() && fileToShare.canRead())) {
+            Log.e(EmulatorDebug.LOG_TAG, "termux-open: Not a readable file: '" + fileToShare.getAbsolutePath() + "'");
+            return;
+        }
+
+        Intent sendIntent = new Intent();
+        sendIntent.setAction(intentAction);
+        sendIntent.addFlags(Intent.FLAG_ACTIVITY_NEW_TASK | Intent.FLAG_GRANT_READ_URI_PERMISSION);
+
+        String contentTypeToUse;
+        if (contentTypeExtra == null) {
+            String fileName = fileToShare.getName();
+            int lastDotIndex = fileName.lastIndexOf('.');
+            String fileExtension = fileName.substring(lastDotIndex + 1, fileName.length());
+            MimeTypeMap mimeTypes = MimeTypeMap.getSingleton();
+            // Lower casing makes it work with e.g. "JPG":
+            contentTypeToUse = mimeTypes.getMimeTypeFromExtension(fileExtension.toLowerCase());
+            if (contentTypeToUse == null) contentTypeToUse = "application/octet-stream";
+        } else {
+            contentTypeToUse = contentTypeExtra;
+        }
+
+        Uri uriToShare = Uri.withAppendedPath(Uri.parse("content://com.termux.files/"), filePath);
+
+        if (Intent.ACTION_SEND.equals(intentAction)) {
+            sendIntent.putExtra(Intent.EXTRA_STREAM, uriToShare);
+            sendIntent.setType(contentTypeToUse);
+        } else {
+            sendIntent.setDataAndType(uriToShare, contentTypeToUse);
+        }
+
+        if (useChooser) {
+            sendIntent = Intent.createChooser(sendIntent, null).addFlags(Intent.FLAG_ACTIVITY_NEW_TASK);
+        }
+
+        try {
+            context.startActivity(sendIntent);
+        } catch (ActivityNotFoundException e) {
+            Log.e(EmulatorDebug.LOG_TAG, "termux-open: No app handles the url " + data);
+        }
+    }
+
+    public static class ContentProvider extends android.content.ContentProvider {
+
+        @Override
+        public boolean onCreate() {
+            return true;
+        }
+
+        @Override
+        public Cursor query(@NonNull Uri uri, String[] projection, String selection, String[] selectionArgs, String sortOrder) {
+            File file = new File(uri.getPath());
+
+            if (projection == null) {
+                projection = new String[]{
+                    MediaStore.MediaColumns.DISPLAY_NAME,
+                    MediaStore.MediaColumns.SIZE,
+                    MediaStore.MediaColumns._ID
+                };
+            }
+
+            Object[] row = new Object[projection.length];
+            for (int i = 0; i < projection.length; i++) {
+                String column = projection[i];
+                Object value;
+                switch (column) {
+                    case MediaStore.MediaColumns.DISPLAY_NAME:
+                        value = file.getName();
+                        break;
+                    case MediaStore.MediaColumns.SIZE:
+                        value = (int) file.length();
+                        break;
+                    case MediaStore.MediaColumns._ID:
+                        value = 1;
+                        break;
+                    default:
+                        value = null;
+                }
+                row[i] = value;
+            }
+
+            MatrixCursor cursor = new MatrixCursor(projection);
+            cursor.addRow(row);
+            return cursor;
+        }
+
+        @Override
+        public String getType(@NonNull Uri uri) {
+            return null;
+        }
+
+        @Override
+        public Uri insert(@NonNull Uri uri, ContentValues values) {
+            return null;
+        }
+
+        @Override
+        public int delete(@NonNull Uri uri, String selection, String[] selectionArgs) {
+            return 0;
+        }
+
+        @Override
+        public int update(@NonNull Uri uri, ContentValues values, String selection, String[] selectionArgs) {
+            return 0;
+        }
+
+        @Override
+        public ParcelFileDescriptor openFile(@NonNull Uri uri, @NonNull String mode) throws FileNotFoundException {
+            File file = new File(uri.getPath());
+            return ParcelFileDescriptor.open(file, ParcelFileDescriptor.MODE_READ_ONLY);
+        }
+    }
+
+}

app/src/main/java/com/termux/app/TermuxPreferences.java

@@ -14,129 +14,185 @@ import java.io.File;
 import java.io.FileInputStream;
 import java.lang.annotation.Retention;
 import java.lang.annotation.RetentionPolicy;
+import java.util.ArrayList;
+import java.util.List;
 import java.util.Properties;
 
 final class TermuxPreferences {
 
-	@IntDef({BELL_VIBRATE, BELL_BEEP, BELL_IGNORE})
+    @IntDef({BELL_VIBRATE, BELL_BEEP, BELL_IGNORE})
-	@Retention(RetentionPolicy.SOURCE)
+    @Retention(RetentionPolicy.SOURCE)
-	public @interface AsciiBellBehaviour {}
+    public @interface AsciiBellBehaviour {
+    }
 
-	static final int BELL_VIBRATE = 1;
+    static final int BELL_VIBRATE = 1;
-	static final int BELL_BEEP = 2;
+    static final int BELL_BEEP = 2;
-	static final int BELL_IGNORE = 3;
+    static final int BELL_IGNORE = 3;
 
-	private final int MIN_FONTSIZE;
+    private final int MIN_FONTSIZE;
-	private static final int MAX_FONTSIZE = 256;
+    private static final int MAX_FONTSIZE = 256;
 
-	private static final String FULLSCREEN_KEY = "fullscreen";
+    private static final String FULLSCREEN_KEY = "fullscreen";
-	private static final String FONTSIZE_KEY = "fontsize";
+    private static final String SHOW_EXTRA_KEYS_KEY = "show_extra_keys";
-	private static final String CURRENT_SESSION_KEY = "current_session";
+    private static final String FONTSIZE_KEY = "fontsize";
-	private static final String SHOW_WELCOME_DIALOG_KEY = "intro_dialog";
+    private static final String CURRENT_SESSION_KEY = "current_session";
 
-	private boolean mFullScreen;
+    private boolean mFullScreen;
-	private int mFontSize;
+    private int mFontSize;
 
-	@AsciiBellBehaviour
+    @AsciiBellBehaviour
-	int mBellBehaviour = BELL_VIBRATE;
+    int mBellBehaviour = BELL_VIBRATE;
 
-	boolean mBackIsEscape = true;
+    boolean mBackIsEscape;
+    boolean mShowExtraKeys;
 
-	TermuxPreferences(Context context) {
+    TermuxPreferences(Context context) {
-		reloadFromProperties(context);
+        reloadFromProperties(context);
-		SharedPreferences prefs = PreferenceManager.getDefaultSharedPreferences(context);
+        SharedPreferences prefs = PreferenceManager.getDefaultSharedPreferences(context);
 
-		float dipInPixels = TypedValue.applyDimension(TypedValue.COMPLEX_UNIT_DIP, 1, context.getResources().getDisplayMetrics());
+        float dipInPixels = TypedValue.applyDimension(TypedValue.COMPLEX_UNIT_DIP, 1, context.getResources().getDisplayMetrics());
 
-		// This is a bit arbitrary and sub-optimal. We want to give a sensible default for minimum font size
+        // This is a bit arbitrary and sub-optimal. We want to give a sensible default for minimum font size
-		// to prevent invisible text due to zoom be mistake:
+        // to prevent invisible text due to zoom be mistake:
-		MIN_FONTSIZE = (int) (4f * dipInPixels);
+        MIN_FONTSIZE = (int) (4f * dipInPixels);
 
-		mFullScreen = prefs.getBoolean(FULLSCREEN_KEY, false);
+        mFullScreen = prefs.getBoolean(FULLSCREEN_KEY, false);
+        mShowExtraKeys = prefs.getBoolean(SHOW_EXTRA_KEYS_KEY, false);
 
-		// http://www.google.com/design/spec/style/typography.html#typography-line-height
+        // http://www.google.com/design/spec/style/typography.html#typography-line-height
-		int defaultFontSize = Math.round(12 * dipInPixels);
+        int defaultFontSize = Math.round(12 * dipInPixels);
-		// Make it divisible by 2 since that is the minimal adjustment step:
+        // Make it divisible by 2 since that is the minimal adjustment step:
-		if (defaultFontSize % 2 == 1) defaultFontSize--;
+        if (defaultFontSize % 2 == 1) defaultFontSize--;
 
-		try {
+        try {
-			mFontSize = Integer.parseInt(prefs.getString(FONTSIZE_KEY, Integer.toString(defaultFontSize)));
+            mFontSize = Integer.parseInt(prefs.getString(FONTSIZE_KEY, Integer.toString(defaultFontSize)));
-		} catch (NumberFormatException | ClassCastException e) {
+        } catch (NumberFormatException | ClassCastException e) {
-			mFontSize = defaultFontSize;
+            mFontSize = defaultFontSize;
-		}
+        }
-		mFontSize = Math.max(MIN_FONTSIZE, Math.min(mFontSize, MAX_FONTSIZE));
+        mFontSize = Math.max(MIN_FONTSIZE, Math.min(mFontSize, MAX_FONTSIZE));
-	}
+    }
 
-	boolean isFullScreen() {
+    boolean isFullScreen() {
-		return mFullScreen;
+        return mFullScreen;
-	}
+    }
 
-	void setFullScreen(Context context, boolean newValue) {
+    void setFullScreen(Context context, boolean newValue) {
-		mFullScreen = newValue;
+        mFullScreen = newValue;
-		SharedPreferences prefs = PreferenceManager.getDefaultSharedPreferences(context);
+        PreferenceManager.getDefaultSharedPreferences(context).edit().putBoolean(FULLSCREEN_KEY, newValue).apply();
-		prefs.edit().putBoolean(FULLSCREEN_KEY, newValue).apply();
+    }
-	}
 
-	int getFontSize() {
+    boolean isShowExtraKeys() {
-		return mFontSize;
+        return mShowExtraKeys;
-	}
+    }
 
-	void changeFontSize(Context context, boolean increase) {
+    boolean toggleShowExtraKeys(Context context) {
-		mFontSize += (increase ? 1 : -1) * 2;
+        mShowExtraKeys = !mShowExtraKeys;
-		mFontSize = Math.max(MIN_FONTSIZE, Math.min(mFontSize, MAX_FONTSIZE));
+        PreferenceManager.getDefaultSharedPreferences(context).edit().putBoolean(SHOW_EXTRA_KEYS_KEY, mShowExtraKeys).apply();
+        return mShowExtraKeys;
+    }
 
-		SharedPreferences prefs = PreferenceManager.getDefaultSharedPreferences(context);
+    int getFontSize() {
-		prefs.edit().putString(FONTSIZE_KEY, Integer.toString(mFontSize)).apply();
+        return mFontSize;
-	}
+    }
 
-	static void storeCurrentSession(Context context, TerminalSession session) {
+    void changeFontSize(Context context, boolean increase) {
-		PreferenceManager.getDefaultSharedPreferences(context).edit().putString(TermuxPreferences.CURRENT_SESSION_KEY, session.mHandle).commit();
+        mFontSize += (increase ? 1 : -1) * 2;
-	}
+        mFontSize = Math.max(MIN_FONTSIZE, Math.min(mFontSize, MAX_FONTSIZE));
 
-	static TerminalSession getCurrentSession(TermuxActivity context) {
+        SharedPreferences prefs = PreferenceManager.getDefaultSharedPreferences(context);
-		String sessionHandle = PreferenceManager.getDefaultSharedPreferences(context).getString(TermuxPreferences.CURRENT_SESSION_KEY, "");
+        prefs.edit().putString(FONTSIZE_KEY, Integer.toString(mFontSize)).apply();
-		for (int i = 0, len = context.mTermService.getSessions().size(); i < len; i++) {
+    }
-			TerminalSession session = context.mTermService.getSessions().get(i);
-			if (session.mHandle.equals(sessionHandle)) return session;
-		}
-		return null;
-	}
 
-	public static boolean isShowWelcomeDialog(Context context) {
+    static void storeCurrentSession(Context context, TerminalSession session) {
-		return PreferenceManager.getDefaultSharedPreferences(context).getBoolean(SHOW_WELCOME_DIALOG_KEY, true);
+        PreferenceManager.getDefaultSharedPreferences(context).edit().putString(TermuxPreferences.CURRENT_SESSION_KEY, session.mHandle).apply();
-	}
+    }
 
-	public static void disableWelcomeDialog(Context context) {
+    static TerminalSession getCurrentSession(TermuxActivity context) {
-		PreferenceManager.getDefaultSharedPreferences(context).edit().putBoolean(SHOW_WELCOME_DIALOG_KEY, false).apply();
+        String sessionHandle = PreferenceManager.getDefaultSharedPreferences(context).getString(TermuxPreferences.CURRENT_SESSION_KEY, "");
-	}
+        for (int i = 0, len = context.mTermService.getSessions().size(); i < len; i++) {
+            TerminalSession session = context.mTermService.getSessions().get(i);
+            if (session.mHandle.equals(sessionHandle)) return session;
+        }
+        return null;
+    }
 
-	public void reloadFromProperties(Context context) {
+    public void reloadFromProperties(Context context) {
-		try {
+        try {
-			File propsFile = new File(TermuxService.HOME_PATH + "/.config/termux/termux.properties");
+            File propsFile = new File(TermuxService.HOME_PATH + "/.termux/termux.properties");
-			Properties props = new Properties();
+            if (!propsFile.exists())
-			if (propsFile.isFile() && propsFile.canRead()) {
+                propsFile = new File(TermuxService.HOME_PATH + "/.config/termux/termux.properties");
-				try (FileInputStream in = new FileInputStream(propsFile)) {
-					props.load(in);
-				}
-			}
 
-			switch (props.getProperty("bell-character", "vibrate")) {
+            Properties props = new Properties();
-				case "beep":
+            if (propsFile.isFile() && propsFile.canRead()) {
-					mBellBehaviour = BELL_BEEP;
+                try (FileInputStream in = new FileInputStream(propsFile)) {
-					break;
+                    props.load(in);
-				case "ignore":
+                }
-					mBellBehaviour = BELL_IGNORE;
+            }
-					break;
-				default: // "vibrate".
-					mBellBehaviour = BELL_VIBRATE;
-					break;
-			}
 
-			mBackIsEscape = "escape".equals(props.getProperty("back-key", "back"));
+            switch (props.getProperty("bell-character", "vibrate")) {
-		} catch (Exception e) {
+                case "beep":
-			Toast.makeText(context, "Error loading properties: " + e.getMessage(), Toast.LENGTH_LONG).show();
+                    mBellBehaviour = BELL_BEEP;
-			Log.e("termux", "Error loading props", e);
+                    break;
-		}
+                case "ignore":
-	}
+                    mBellBehaviour = BELL_IGNORE;
+                    break;
+                default: // "vibrate".
+                    mBellBehaviour = BELL_VIBRATE;
+                    break;
+            }
+
+            mBackIsEscape = "escape".equals(props.getProperty("back-key", "back"));
+
+            shortcuts.clear();
+            parseAction("shortcut.create-session", SHORTCUT_ACTION_CREATE_SESSION, props);
+            parseAction("shortcut.next-session", SHORTCUT_ACTION_NEXT_SESSION, props);
+            parseAction("shortcut.previous-session", SHORTCUT_ACTION_PREVIOUS_SESSION, props);
+            parseAction("shortcut.rename-session", SHORTCUT_ACTION_RENAME_SESSION, props);
+        } catch (Exception e) {
+            Toast.makeText(context, "Error loading properties: " + e.getMessage(), Toast.LENGTH_LONG).show();
+            Log.e("termux", "Error loading props", e);
+        }
+    }
+
+    public static final int SHORTCUT_ACTION_CREATE_SESSION = 1;
+    public static final int SHORTCUT_ACTION_NEXT_SESSION = 2;
+    public static final int SHORTCUT_ACTION_PREVIOUS_SESSION = 3;
+    public static final int SHORTCUT_ACTION_RENAME_SESSION = 4;
+
+    public final static class KeyboardShortcut {
+
+        public KeyboardShortcut(int codePoint, int shortcutAction) {
+            this.codePoint = codePoint;
+            this.shortcutAction = shortcutAction;
+        }
+
+        final int codePoint;
+        final int shortcutAction;
+    }
+
+    final List<KeyboardShortcut> shortcuts = new ArrayList<>();
+
+    private void parseAction(String name, int shortcutAction, Properties props) {
+        String value = props.getProperty(name);
+        if (value == null) return;
+        String[] parts = value.toLowerCase().trim().split("\\+");
+        String input = parts.length == 2 ? parts[1].trim() : null;
+        if (!(parts.length == 2 && parts[0].trim().equals("ctrl")) || input.isEmpty() || input.length() > 2) {
+            Log.e("termux", "Keyboard shortcut '" + name + "' is not Ctrl+<something>");
+            return;
+        }
+
+        char c = input.charAt(0);
+        int codePoint = c;
+        if (Character.isLowSurrogate(c)) {
+            if (input.length() != 2 || Character.isHighSurrogate(input.charAt(1))) {
+                Log.e("termux", "Keyboard shortcut '" + name + "' is not Ctrl+<something>");
+                return;
+            } else {
+                codePoint = Character.toCodePoint(input.charAt(1), c);
+            }
+        }
+        shortcuts.add(new KeyboardShortcut(codePoint, shortcutAction));
+    }
 
 }

app/src/main/java/com/termux/app/TermuxService.java

@@ -1,15 +1,5 @@
 package com.termux.app;
 
-import java.io.File;
-import java.io.IOException;
-import java.util.ArrayList;
-import java.util.List;
-
-import com.termux.R;
-import com.termux.terminal.EmulatorDebug;
-import com.termux.terminal.TerminalSession;
-import com.termux.terminal.TerminalSession.SessionChangedCallback;
-
 import android.annotation.SuppressLint;
 import android.app.Notification;
 import android.app.NotificationManager;
@@ -21,335 +11,334 @@ import android.content.res.Resources;
 import android.net.Uri;
 import android.net.wifi.WifiManager;
 import android.os.Binder;
+import android.os.Handler;
 import android.os.IBinder;
 import android.os.PowerManager;
+import android.support.v4.content.WakefulBroadcastReceiver;
 import android.util.Log;
 import android.widget.ArrayAdapter;
 
+import com.termux.R;
+import com.termux.terminal.EmulatorDebug;
+import com.termux.terminal.TerminalSession;
+import com.termux.terminal.TerminalSession.SessionChangedCallback;
+
+import java.io.File;
+import java.util.ArrayList;
+import java.util.List;
+
 /**
  * A service holding a list of terminal sessions, {@link #mTerminalSessions}, showing a foreground notification while
  * running so that it is not terminated. The user interacts with the session through {@link TermuxActivity}, but this
  * service may outlive the activity when the user or the system disposes of the activity. In that case the user may
  * restart {@link TermuxActivity} later to yet again access the sessions.
- * 
+ * <p/>
  * In order to keep both terminal sessions and spawned processes (who may outlive the terminal sessions) alive as long
  * as wanted by the user this service is a foreground service, {@link Service#startForeground(int, Notification)}.
- * 
+ * <p/>
  * Optionally may hold a wake and a wifi lock, in which case that is shown in the notification - see
  * {@link #buildNotification()}.
  */
 public final class TermuxService extends Service implements SessionChangedCallback {
 
-	/** Note that this is a symlink on the Android M preview. */
+    /** Note that this is a symlink on the Android M preview. */
-	@SuppressLint("SdCardPath")
+    @SuppressLint("SdCardPath")
-	public static final String FILES_PATH = "/data/data/com.termux/files";
+    public static final String FILES_PATH = "/data/data/com.termux/files";
-	public static final String PREFIX_PATH = FILES_PATH + "/usr";
+    public static final String PREFIX_PATH = FILES_PATH + "/usr";
-	public static final String HOME_PATH = FILES_PATH + "/home";
+    public static final String HOME_PATH = FILES_PATH + "/home";
 
-	private static final int NOTIFICATION_ID = 1337;
+    private static final int NOTIFICATION_ID = 1337;
 
-	/** Intent action to stop the service. */
+    private static final String ACTION_STOP_SERVICE = "com.termux.service_stop";
-	private static final String ACTION_STOP_SERVICE = "com.termux.service_stop";
+    private static final String ACTION_LOCK_WAKE = "com.termux.service_wake_lock";
-	/** Intent action to toggle the wake lock, {@link #mWakeLock}, which this service may hold. */
+    private static final String ACTION_UNLOCK_WAKE = "com.termux.service_wake_unlock";
-	private static final String ACTION_LOCK_WAKE = "com.termux.service_toggle_wake_lock";
+    /** Intent action to launch a new terminal session. Executed from TermuxWidgetProvider. */
-	/** Intent action to toggle the wifi lock, {@link #mWifiLock}, which this service may hold. */
+    public static final String ACTION_EXECUTE = "com.termux.service_execute";
-	private static final String ACTION_LOCK_WIFI = "com.termux.service_toggle_wifi_lock";
-	/** Intent action to launch a new terminal session. Executed from TermuxWidgetProvider. */
-	public static final String ACTION_EXECUTE = "com.termux.service_execute";
 
     public static final String EXTRA_ARGUMENTS = "com.termux.execute.arguments";
 
     public static final String EXTRA_CURRENT_WORKING_DIRECTORY = "com.termux.execute.cwd";
+    private static final String EXTRA_EXECUTE_IN_BACKGROUND = "com.termux.execute.background";
 
-	/** This service is only bound from inside the same process and never uses IPC. */
+    /** This service is only bound from inside the same process and never uses IPC. */
-	class LocalBinder extends Binder {
+    class LocalBinder extends Binder {
-		public final TermuxService service = TermuxService.this;
+        public final TermuxService service = TermuxService.this;
-	}
+    }
 
-	private final IBinder mBinder = new LocalBinder();
+    private final IBinder mBinder = new LocalBinder();
 
-	/**
+    private final Handler mHandler = new Handler();
-	 * The terminal sessions which this service manages.
-	 *
-	 * Note that this list is observed by {@link TermuxActivity#mListViewAdapter}, so any changes must be made on the UI
-	 * thread and followed by a call to {@link ArrayAdapter#notifyDataSetChanged()} }.
-	 */
-	final List<TerminalSession> mTerminalSessions = new ArrayList<>();
 
-	/** Note that the service may often outlive the activity, so need to clear this reference. */
+    /**
-	SessionChangedCallback mSessionChangeCallback;
+     * The terminal sessions which this service manages.
+     * <p/>
+     * Note that this list is observed by {@link TermuxActivity#mListViewAdapter}, so any changes must be made on the UI
+     * thread and followed by a call to {@link ArrayAdapter#notifyDataSetChanged()} }.
+     */
+    final List<TerminalSession> mTerminalSessions = new ArrayList<>();
 
-	private PowerManager.WakeLock mWakeLock;
+    final List<BackgroundJob> mBackgroundTasks = new ArrayList<>();
-	private WifiManager.WifiLock mWifiLock;
 
-	/** If the user has executed the {@link #ACTION_STOP_SERVICE} intent. */
+    /** Note that the service may often outlive the activity, so need to clear this reference. */
-	boolean mWantsToStop = false;
+    SessionChangedCallback mSessionChangeCallback;
 
-	@SuppressLint("Wakelock")
+    /** The wake lock and wifi lock are always acquired and released together. */
-	@Override
+    private PowerManager.WakeLock mWakeLock;
-	public int onStartCommand(Intent intent, int flags, int startId) {
+    private WifiManager.WifiLock mWifiLock;
-		String action = intent.getAction();
-		if (ACTION_STOP_SERVICE.equals(action)) {
-			mWantsToStop = true;
-			for (int i = 0; i < mTerminalSessions.size(); i++)
-				mTerminalSessions.get(i).finishIfRunning();
-			stopSelf();
-		} else if (ACTION_LOCK_WAKE.equals(action)) {
-			if (mWakeLock == null) {
-				PowerManager pm = (PowerManager) getSystemService(Context.POWER_SERVICE);
-				mWakeLock = pm.newWakeLock(PowerManager.PARTIAL_WAKE_LOCK, EmulatorDebug.LOG_TAG);
-				mWakeLock.acquire();
-			} else {
-				mWakeLock.release();
-				mWakeLock = null;
-			}
-			updateNotification();
-		} else if (ACTION_LOCK_WIFI.equals(action)) {
-			if (mWifiLock == null) {
-				WifiManager wm = (WifiManager) getSystemService(Context.WIFI_SERVICE);
-				mWifiLock = wm.createWifiLock(WifiManager.WIFI_MODE_FULL_HIGH_PERF, EmulatorDebug.LOG_TAG);
-				mWifiLock.acquire();
-			} else {
-				mWifiLock.release();
-				mWifiLock = null;
-			}
-			updateNotification();
-		} else if (ACTION_EXECUTE.equals(action)) {
-			Uri executableUri = intent.getData();
-			String executablePath = (executableUri == null ? null : executableUri.getPath());
-			String[] arguments = (executableUri == null ? null : intent.getStringArrayExtra(EXTRA_ARGUMENTS));
-			String cwd = intent.getStringExtra(EXTRA_CURRENT_WORKING_DIRECTORY);
-			TerminalSession newSession = createTermSession(executablePath, arguments, cwd, false);
 
-			// Transform executable path to session name, e.g. "/bin/do-something.sh" => "do something.sh".
+    /** If the user has executed the {@link #ACTION_STOP_SERVICE} intent. */
-			if (executablePath != null) {
+    boolean mWantsToStop = false;
-				int lastSlash = executablePath.lastIndexOf('/');
-				String name = (lastSlash == -1) ? executablePath : executablePath.substring(lastSlash + 1);
-				name = name.replace('-', ' ');
-				newSession.mSessionName = name;
-			}
 
-			// Make the newly created session the current one to be displayed:
+    @SuppressLint("Wakelock")
-			TermuxPreferences.storeCurrentSession(this, newSession);
+    @Override
+    public int onStartCommand(Intent intent, int flags, int startId) {
+        String action = intent.getAction();
+        if (ACTION_STOP_SERVICE.equals(action)) {
+            mWantsToStop = true;
+            for (int i = 0; i < mTerminalSessions.size(); i++)
+                mTerminalSessions.get(i).finishIfRunning();
+            stopSelf();
+        } else if (ACTION_LOCK_WAKE.equals(action)) {
+            if (mWakeLock == null) {
+                PowerManager pm = (PowerManager) getSystemService(Context.POWER_SERVICE);
+                mWakeLock = pm.newWakeLock(PowerManager.PARTIAL_WAKE_LOCK, EmulatorDebug.LOG_TAG);
+                mWakeLock.acquire();
 
-			// Launch the main Termux app, which will now show to current session:
+                // http://tools.android.com/tech-docs/lint-in-studio-2-3#TOC-WifiManager-Leak
-			startActivity(new Intent(this, TermuxActivity.class).addFlags(Intent.FLAG_ACTIVITY_NEW_TASK));
+                WifiManager wm = (WifiManager) getApplicationContext().getSystemService(Context.WIFI_SERVICE);
-		} else if (action != null) {
+                mWifiLock = wm.createWifiLock(WifiManager.WIFI_MODE_FULL_HIGH_PERF, EmulatorDebug.LOG_TAG);
-			Log.e(EmulatorDebug.LOG_TAG, "Unknown TermuxService action: '" + action + "'");
+                mWifiLock.acquire();
-		}
 
-		// If this service really do get killed, there is no point restarting it automatically - let the user do on next
+                updateNotification();
-		// start of {@link Term):
+            }
-		return Service.START_NOT_STICKY;
+        } else if (ACTION_UNLOCK_WAKE.equals(action)) {
-	}
+            if (mWakeLock != null) {
+                mWakeLock.release();
+                mWakeLock = null;
 
-	@Override
+                mWifiLock.release();
-	public IBinder onBind(Intent intent) {
+                mWifiLock = null;
-		return mBinder;
-	}
 
-	@Override
+                updateNotification();
-	public void onCreate() {
+            }
-		startForeground(NOTIFICATION_ID, buildNotification());
+        } else if (ACTION_EXECUTE.equals(action)) {
-	}
+            Uri executableUri = intent.getData();
+            String executablePath = (executableUri == null ? null : executableUri.getPath());
 
-	/** Update the shown foreground service notification after making any changes that affect it. */
+            String[] arguments = (executableUri == null ? null : intent.getStringArrayExtra(EXTRA_ARGUMENTS));
-	private void updateNotification() {
+            String cwd = intent.getStringExtra(EXTRA_CURRENT_WORKING_DIRECTORY);
-		if (mWakeLock == null && mWifiLock == null && getSessions().isEmpty()) {
-			// Exit if we are updating after the user disabled all locks with no sessions.
-			stopSelf();
-		} else {
-			((NotificationManager) getSystemService(Context.NOTIFICATION_SERVICE)).notify(NOTIFICATION_ID, buildNotification());
-		}
-	}
 
-	private Notification buildNotification() {
+            if (intent.getBooleanExtra(EXTRA_EXECUTE_IN_BACKGROUND, false)) {
-		Intent notifyIntent = new Intent(this, TermuxActivity.class);
+                BackgroundJob task = new BackgroundJob(cwd, executablePath, arguments, this);
-		// PendingIntent#getActivity(): "Note that the activity will be started outside of the context of an existing
+                mBackgroundTasks.add(task);
-		// activity, so you must use the Intent.FLAG_ACTIVITY_NEW_TASK launch flag in the Intent":
+                updateNotification();
-		notifyIntent.addFlags(Intent.FLAG_ACTIVITY_NEW_TASK);
+            } else {
-		PendingIntent pendingIntent = PendingIntent.getActivity(this, 0, notifyIntent, 0);
+                TerminalSession newSession = createTermSession(executablePath, arguments, cwd, false);
 
-		int sessionCount = mTerminalSessions.size();
+                // Transform executable path to session name, e.g. "/bin/do-something.sh" => "do something.sh".
-		String contentText = sessionCount + " terminal session" + (sessionCount == 1 ? "" : "s");
+                if (executablePath != null) {
+                    int lastSlash = executablePath.lastIndexOf('/');
+                    String name = (lastSlash == -1) ? executablePath : executablePath.substring(lastSlash + 1);
+                    name = name.replace('-', ' ');
+                    newSession.mSessionName = name;
+                }
 
-		boolean wakeLockHeld = mWakeLock != null;
+                // Make the newly created session the current one to be displayed:
-		boolean wifiLockHeld = mWifiLock != null;
+                TermuxPreferences.storeCurrentSession(this, newSession);
-		if (wakeLockHeld && wifiLockHeld) {
-			contentText += " (wake&wifi lock held)";
-		} else if (wakeLockHeld) {
-			contentText += " (wake lock held)";
-		} else if (wifiLockHeld) {
-			contentText += " (wifi lock held)";
-		}
 
-		Notification.Builder builder = new Notification.Builder(this);
+                // Launch the main Termux app, which will now show the current session:
-		builder.setContentTitle(getText(R.string.application_name));
+                startActivity(new Intent(this, TermuxActivity.class).addFlags(Intent.FLAG_ACTIVITY_NEW_TASK));
-		builder.setContentText(contentText);
+            }
-		builder.setSmallIcon(R.drawable.ic_service_notification);
+        } else if (action != null) {
-		builder.setContentIntent(pendingIntent);
+            Log.e(EmulatorDebug.LOG_TAG, "Unknown TermuxService action: '" + action + "'");
-		builder.setOngoing(true);
+        }
 
-		// If holding a wake or wifi lock consider the notification of high priority since it's using power,
+        if ((flags & START_FLAG_REDELIVERY) == 0) {
-		// otherwise use a minimal priority since this is just a background service notification:
+            // Service is started by WBR, not restarted by system, so release the WakeLock from WBR.
-		builder.setPriority((wakeLockHeld || wifiLockHeld) ? Notification.PRIORITY_HIGH : Notification.PRIORITY_MIN);
+            WakefulBroadcastReceiver.completeWakefulIntent(intent);
+        }
 
-		// No need to show a timestamp:
+        // If this service really do get killed, there is no point restarting it automatically - let the user do on next
-		builder.setShowWhen(false);
+        // start of {@link Term):
+        return Service.START_NOT_STICKY;
+    }
 
-		// Background color for small notification icon:
+    @Override
-		builder.setColor(0xFF000000);
+    public IBinder onBind(Intent intent) {
+        return mBinder;
+    }
 
-		Resources res = getResources();
+    @Override
-		Intent exitIntent = new Intent(this, TermuxService.class).setAction(ACTION_STOP_SERVICE);
+    public void onCreate() {
-		builder.addAction(android.R.drawable.ic_delete, res.getString(R.string.notification_action_exit), PendingIntent.getService(this, 0, exitIntent, 0));
+        startForeground(NOTIFICATION_ID, buildNotification());
+    }
 
-		Intent toggleWakeLockIntent = new Intent(this, TermuxService.class).setAction(ACTION_LOCK_WAKE);
+    /** Update the shown foreground service notification after making any changes that affect it. */
-		builder.addAction(android.R.drawable.ic_lock_lock, res.getString(R.string.notification_action_wakelock),
+    void updateNotification() {
-				PendingIntent.getService(this, 0, toggleWakeLockIntent, 0));
+        if (mWakeLock == null && mTerminalSessions.isEmpty() && mBackgroundTasks.isEmpty()) {
+            // Exit if we are updating after the user disabled all locks with no sessions or tasks running.
+            stopSelf();
+        } else {
+            ((NotificationManager) getSystemService(Context.NOTIFICATION_SERVICE)).notify(NOTIFICATION_ID, buildNotification());
+        }
+    }
 
-		Intent toggleWifiLockIntent = new Intent(this, TermuxService.class).setAction(ACTION_LOCK_WIFI);
+    private Notification buildNotification() {
-		builder.addAction(android.R.drawable.ic_lock_lock, res.getString(R.string.notification_action_wifilock),
+        Intent notifyIntent = new Intent(this, TermuxActivity.class);
-				PendingIntent.getService(this, 0, toggleWifiLockIntent, 0));
+        // PendingIntent#getActivity(): "Note that the activity will be started outside of the context of an existing
+        // activity, so you must use the Intent.FLAG_ACTIVITY_NEW_TASK launch flag in the Intent":
+        notifyIntent.addFlags(Intent.FLAG_ACTIVITY_NEW_TASK);
+        PendingIntent pendingIntent = PendingIntent.getActivity(this, 0, notifyIntent, 0);
 
-		return builder.build();
+        int sessionCount = mTerminalSessions.size();
-	}
+        int taskCount = mBackgroundTasks.size();
+        String contentText = sessionCount + " session" + (sessionCount == 1 ? "" : "s");
+        if (taskCount > 0) {
+            contentText += ", " + taskCount + " task" + (taskCount == 1 ? "" : "s");
+        }
 
-	@Override
+        final boolean wakeLockHeld = mWakeLock != null;
-	public void onDestroy() {
+        if (wakeLockHeld) contentText += " (wake lock held)";
-		if (mWakeLock != null) mWakeLock.release();
-		if (mWifiLock != null) mWifiLock.release();
 
-		stopForeground(true);
+        Notification.Builder builder = new Notification.Builder(this);
+        builder.setContentTitle(getText(R.string.application_name));
+        builder.setContentText(contentText);
+        builder.setSmallIcon(R.drawable.ic_service_notification);
+        builder.setContentIntent(pendingIntent);
+        builder.setOngoing(true);
 
-		for (int i = 0; i < mTerminalSessions.size(); i++)
+        // If holding a wake or wifi lock consider the notification of high priority since it's using power,
-			mTerminalSessions.get(i).finishIfRunning();
+        // otherwise use a minimal priority since this is just a background service notification:
-		mTerminalSessions.clear();
+        builder.setPriority((wakeLockHeld) ? Notification.PRIORITY_HIGH : Notification.PRIORITY_MIN);
-	}
 
-	public List<TerminalSession> getSessions() {
+        // No need to show a timestamp:
-		return mTerminalSessions;
+        builder.setShowWhen(false);
-	}
 
-	TerminalSession createTermSession(String executablePath, String[] arguments, String cwd, boolean failSafe) {
+        // Background color for small notification icon:
-		new File(HOME_PATH).mkdirs();
+        builder.setColor(0xFF000000);
 
-		if (cwd == null) cwd = HOME_PATH;
+        Resources res = getResources();
+        Intent exitIntent = new Intent(this, TermuxService.class).setAction(ACTION_STOP_SERVICE);
+        builder.addAction(android.R.drawable.ic_delete, res.getString(R.string.notification_action_exit), PendingIntent.getService(this, 0, exitIntent, 0));
 
-		final String termEnv = "TERM=xterm-256color";
+        String newWakeAction = wakeLockHeld ? ACTION_UNLOCK_WAKE : ACTION_LOCK_WAKE;
-		final String homeEnv = "HOME=" + HOME_PATH;
+        Intent toggleWakeLockIntent = new Intent(this, TermuxService.class).setAction(newWakeAction);
-		final String prefixEnv = "PREFIX=" + PREFIX_PATH;
+        String actionTitle = res.getString(wakeLockHeld ?
-		final String androidRootEnv = "ANDROID_ROOT=" + System.getenv("ANDROID_ROOT");
+            R.string.notification_action_wake_unlock :
-		final String androidDataEnv = "ANDROID_DATA=" + System.getenv("ANDROID_DATA");
+            R.string.notification_action_wake_lock);
-        // EXTERNAL_STORAGE is needed for /system/bin/am to work on at least
+        int actionIcon = wakeLockHeld ? android.R.drawable.ic_lock_idle_lock : android.R.drawable.ic_lock_lock;
-        // Samsung S7 - see https://plus.google.com/110070148244138185604/posts/gp8Lk3aCGp3.
+        builder.addAction(actionIcon, actionTitle, PendingIntent.getService(this, 0, toggleWakeLockIntent, 0));
-        final String externalStorageEnv = "EXTERNAL_STORAGE=" + System.getenv("EXTERNAL_STORAGE");
-		String[] env;
-		if (failSafe) {
-            // Keep the default path so that system binaries can be used in the failsafe session.
-            final String pathEnv = "PATH=" + System.getenv("PATH");
-            env = new String[] { termEnv, homeEnv, prefixEnv, androidRootEnv, androidDataEnv, pathEnv, externalStorageEnv };
-		} else {
-			final String ps1Env = "PS1=$ ";
-			final String ldEnv = "LD_LIBRARY_PATH=" + PREFIX_PATH + "/lib";
-			final String langEnv = "LANG=en_US.UTF-8";
-			final String pathEnv = "PATH=" + PREFIX_PATH + "/bin:" + PREFIX_PATH + "/bin/applets";
-			final String pwdEnv = "PWD=" + cwd;
 
-			env = new String[] { termEnv, homeEnv, prefixEnv, ps1Env, ldEnv, langEnv, pathEnv, pwdEnv, androidRootEnv, androidDataEnv, externalStorageEnv };
+        return builder.build();
-		}
+    }
 
-		String shellName;
+    @Override
-		if (executablePath == null) {
+    public void onDestroy() {
-			File shell = new File(HOME_PATH, ".termux/shell");
+        if (mWakeLock != null) mWakeLock.release();
-			if (shell.exists()) {
+        if (mWifiLock != null) mWifiLock.release();
-				try {
-					File canonicalFile = shell.getCanonicalFile();
-					if (canonicalFile.isFile() && canonicalFile.canExecute()) {
-						executablePath = canonicalFile.getName().equals("busybox") ? (PREFIX_PATH + "/bin/ash") : canonicalFile.getAbsolutePath();
-					} else {
-						Log.w(EmulatorDebug.LOG_TAG, "$HOME/.termux/shell points to non-executable shell: " + canonicalFile.getAbsolutePath());
-					}
-				} catch (IOException e) {
-					Log.e(EmulatorDebug.LOG_TAG, "Error checking $HOME/.termux/shell", e);
-				}
-			}
 
-			if (executablePath == null) {
+        stopForeground(true);
-				// Try bash, zsh and ash in that order:
-				for (String shellBinary : new String[] { "bash", "zsh", "ash" }) {
-					File shellFile = new File(PREFIX_PATH + "/bin/" + shellBinary);
-					if (shellFile.canExecute()) {
-						executablePath = shellFile.getAbsolutePath();
-						break;
-					}
-				}
-			}
 
-			if (executablePath == null) {
+        for (int i = 0; i < mTerminalSessions.size(); i++)
-				// Fall back to system shell as last resort:
+            mTerminalSessions.get(i).finishIfRunning();
-				executablePath = "/system/bin/sh";
+        mTerminalSessions.clear();
-			}
+    }
 
-			String[] parts = executablePath.split("/");
+    public List<TerminalSession> getSessions() {
-			shellName = "-" + parts[parts.length - 1];
+        return mTerminalSessions;
-		} else {
+    }
-			int lastSlashIndex = executablePath.lastIndexOf('/');
-			shellName = lastSlashIndex == -1 ? executablePath : executablePath.substring(lastSlashIndex + 1);
-		}
 
-		String[] args;
+    TerminalSession createTermSession(String executablePath, String[] arguments, String cwd, boolean failSafe) {
-		if (arguments == null) {
+        new File(HOME_PATH).mkdirs();
-			args = new String[] { shellName };
-		} else {
-			args = new String[arguments.length + 1];
-			args[0] = shellName;
 
-			System.arraycopy(arguments, 0, args, 1, arguments.length);
+        if (cwd == null) cwd = HOME_PATH;
-		}
 
-		TerminalSession session = new TerminalSession(executablePath, cwd, args, env, this);
+        String[] env = BackgroundJob.buildEnvironment(failSafe, cwd);
-		mTerminalSessions.add(session);
+        boolean isLoginShell = false;
-		updateNotification();
-		return session;
-	}
 
-	public int removeTermSession(TerminalSession sessionToRemove) {
+        if (executablePath == null) {
-		int indexOfRemoved = mTerminalSessions.indexOf(sessionToRemove);
+            for (String shellBinary : new String[]{"login", "bash", "zsh"}) {
-		mTerminalSessions.remove(indexOfRemoved);
+                File shellFile = new File(PREFIX_PATH + "/bin/" + shellBinary);
-		if (mTerminalSessions.isEmpty() && mWakeLock == null) {
+                if (shellFile.canExecute()) {
-			// Finish if there are no sessions left and the wake lock is not held, otherwise keep the service alive if
+                    executablePath = shellFile.getAbsolutePath();
-			// holding wake lock since there may be daemon processes (e.g. sshd) running.
+                    break;
-			stopSelf();
+                }
-		} else {
+            }
-			updateNotification();
-		}
-		return indexOfRemoved;
-	}
 
-	@Override
+            if (executablePath == null) {
-	public void onTitleChanged(TerminalSession changedSession) {
+                // Fall back to system shell as last resort:
-		if (mSessionChangeCallback != null) mSessionChangeCallback.onTitleChanged(changedSession);
+                executablePath = "/system/bin/sh";
-	}
+            }
+            isLoginShell = true;
+        }
 
-	@Override
+        String[] processArgs = BackgroundJob.setupProcessArgs(executablePath, arguments);
-	public void onSessionFinished(final TerminalSession finishedSession) {
+        executablePath = processArgs[0];
-		if (mSessionChangeCallback != null) mSessionChangeCallback.onSessionFinished(finishedSession);
+        int lastSlashIndex = executablePath.lastIndexOf('/');
-	}
+        String processName = (isLoginShell ? "-" : "") +
+            (lastSlashIndex == -1 ? executablePath : executablePath.substring(lastSlashIndex + 1));
 
-	@Override
+        String[] args = new String[processArgs.length];
-	public void onTextChanged(TerminalSession changedSession) {
+        args[0] = processName;
-		if (mSessionChangeCallback != null) mSessionChangeCallback.onTextChanged(changedSession);
+        if (processArgs.length > 1) System.arraycopy(processArgs, 1, args, 1, processArgs.length - 1);
-	}
 
-	@Override
+        TerminalSession session = new TerminalSession(executablePath, cwd, args, env, this);
-	public void onClipboardText(TerminalSession session, String text) {
+        mTerminalSessions.add(session);
-		if (mSessionChangeCallback != null) mSessionChangeCallback.onClipboardText(session, text);
+        updateNotification();
-	}
+        return session;
+    }
 
-	@Override
+    public int removeTermSession(TerminalSession sessionToRemove) {
-	public void onBell(TerminalSession session) {
+        int indexOfRemoved = mTerminalSessions.indexOf(sessionToRemove);
-		if (mSessionChangeCallback != null) mSessionChangeCallback.onBell(session);
+        mTerminalSessions.remove(indexOfRemoved);
-	}
+        if (mTerminalSessions.isEmpty() && mWakeLock == null) {
+            // Finish if there are no sessions left and the wake lock is not held, otherwise keep the service alive if
+            // holding wake lock since there may be daemon processes (e.g. sshd) running.
+            stopSelf();
+        } else {
+            updateNotification();
+        }
+        return indexOfRemoved;
+    }
 
+    @Override
+    public void onTitleChanged(TerminalSession changedSession) {
+        if (mSessionChangeCallback != null) mSessionChangeCallback.onTitleChanged(changedSession);
+    }
+
+    @Override
+    public void onSessionFinished(final TerminalSession finishedSession) {
+        if (mSessionChangeCallback != null)
+            mSessionChangeCallback.onSessionFinished(finishedSession);
+    }
+
+    @Override
+    public void onTextChanged(TerminalSession changedSession) {
+        if (mSessionChangeCallback != null) mSessionChangeCallback.onTextChanged(changedSession);
+    }
+
+    @Override
+    public void onClipboardText(TerminalSession session, String text) {
+        if (mSessionChangeCallback != null) mSessionChangeCallback.onClipboardText(session, text);
+    }
+
+    @Override
+    public void onBell(TerminalSession session) {
+        if (mSessionChangeCallback != null) mSessionChangeCallback.onBell(session);
+    }
+
+    @Override
+    public void onColorsChanged(TerminalSession session) {
+        if (mSessionChangeCallback != null) mSessionChangeCallback.onColorsChanged(session);
+    }
+
+    public void onBackgroundJobExited(final BackgroundJob task) {
+        mHandler.post(new Runnable() {
+            @Override
+            public void run() {
+                mBackgroundTasks.remove(task);
+                updateNotification();
+            }
+        });
+    }
 }

app/src/main/java/com/termux/app/TermuxViewClient.java

@@ -0,0 +1,281 @@
+package com.termux.app;
+
+import android.content.Context;
+import android.media.AudioManager;
+import android.support.v4.widget.DrawerLayout;
+import android.view.Gravity;
+import android.view.InputDevice;
+import android.view.KeyEvent;
+import android.view.MotionEvent;
+import android.view.inputmethod.InputMethodManager;
+
+import com.termux.terminal.KeyHandler;
+import com.termux.terminal.TerminalEmulator;
+import com.termux.terminal.TerminalSession;
+import com.termux.view.TerminalViewClient;
+
+import java.util.List;
+
+public final class TermuxViewClient implements TerminalViewClient {
+
+    final TermuxActivity mActivity;
+
+    /** Keeping track of the special keys acting as Ctrl and Fn for the soft keyboard and other hardware keys. */
+    boolean mVirtualControlKeyDown, mVirtualFnKeyDown;
+
+    public TermuxViewClient(TermuxActivity activity) {
+        this.mActivity = activity;
+    }
+
+    @Override
+    public float onScale(float scale) {
+        if (scale < 0.9f || scale > 1.1f) {
+            boolean increase = scale > 1.f;
+            mActivity.changeFontSize(increase);
+            return 1.0f;
+        }
+        return scale;
+    }
+
+    @Override
+    public void onSingleTapUp(MotionEvent e) {
+        InputMethodManager mgr = (InputMethodManager) mActivity.getSystemService(Context.INPUT_METHOD_SERVICE);
+        mgr.showSoftInput(mActivity.mTerminalView, InputMethodManager.SHOW_IMPLICIT);
+    }
+
+    @Override
+    public boolean shouldBackButtonBeMappedToEscape() {
+        return mActivity.mSettings.mBackIsEscape;
+    }
+
+    @Override
+    public void copyModeChanged(boolean copyMode) {
+        // Disable drawer while copying.
+        mActivity.getDrawer().setDrawerLockMode(copyMode ? DrawerLayout.LOCK_MODE_LOCKED_CLOSED : DrawerLayout.LOCK_MODE_UNLOCKED);
+    }
+
+    @Override
+    public boolean onKeyDown(int keyCode, KeyEvent e, TerminalSession currentSession) {
+        if (handleVirtualKeys(keyCode, e, true)) return true;
+
+        if (keyCode == KeyEvent.KEYCODE_ENTER && !currentSession.isRunning()) {
+            mActivity.removeFinishedSession(currentSession);
+            return true;
+        } else if (e.isCtrlPressed() && e.isAltPressed()) {
+            // Get the unmodified code point:
+            int unicodeChar = e.getUnicodeChar(0);
+
+            if (keyCode == KeyEvent.KEYCODE_DPAD_DOWN || unicodeChar == 'n'/* next */) {
+                mActivity.switchToSession(true);
+            } else if (keyCode == KeyEvent.KEYCODE_DPAD_UP || unicodeChar == 'p' /* previous */) {
+                mActivity.switchToSession(false);
+            } else if (keyCode == KeyEvent.KEYCODE_DPAD_RIGHT) {
+                mActivity.getDrawer().openDrawer(Gravity.LEFT);
+            } else if (keyCode == KeyEvent.KEYCODE_DPAD_LEFT) {
+                mActivity.getDrawer().closeDrawers();
+            } else if (unicodeChar == 'f'/* full screen */) {
+                mActivity.toggleImmersive();
+            } else if (unicodeChar == 'k'/* keyboard */) {
+                InputMethodManager imm = (InputMethodManager) mActivity.getSystemService(Context.INPUT_METHOD_SERVICE);
+                imm.toggleSoftInput(InputMethodManager.SHOW_FORCED, 0);
+            } else if (unicodeChar == 'm'/* menu */) {
+                mActivity.mTerminalView.showContextMenu();
+            } else if (unicodeChar == 'r'/* rename */) {
+                mActivity.renameSession(currentSession);
+            } else if (unicodeChar == 'c'/* create */) {
+                mActivity.addNewSession(false, null);
+            } else if (unicodeChar == 'u' /* urls */) {
+                mActivity.showUrlSelection();
+            } else if (unicodeChar == 'v') {
+                mActivity.doPaste();
+            } else if (unicodeChar == '+' || e.getUnicodeChar(KeyEvent.META_SHIFT_ON) == '+') {
+                // We also check for the shifted char here since shift may be required to produce '+',
+                // see https://github.com/termux/termux-api/issues/2
+                mActivity.changeFontSize(true);
+            } else if (unicodeChar == '-') {
+                mActivity.changeFontSize(false);
+            } else if (unicodeChar >= '1' && unicodeChar <= '9') {
+                int num = unicodeChar - '1';
+                TermuxService service = mActivity.mTermService;
+                if (service.getSessions().size() > num)
+                    mActivity.switchToSession(service.getSessions().get(num));
+            }
+            return true;
+        }
+
+        return false;
+
+    }
+
+    @Override
+    public boolean onKeyUp(int keyCode, KeyEvent e) {
+        return handleVirtualKeys(keyCode, e, false);
+    }
+
+    @Override
+    public boolean readControlKey() {
+        return (mActivity.mExtraKeysView != null && mActivity.mExtraKeysView.readControlButton()) || mVirtualControlKeyDown;
+    }
+
+    @Override
+    public boolean readAltKey() {
+        return (mActivity.mExtraKeysView != null && mActivity.mExtraKeysView.readAltButton());
+    }
+
+    @Override
+    public boolean onCodePoint(final int codePoint, boolean ctrlDown, TerminalSession session) {
+        if (mVirtualFnKeyDown) {
+            int resultingKeyCode = -1;
+            int resultingCodePoint = -1;
+            boolean altDown = false;
+            int lowerCase = Character.toLowerCase(codePoint);
+            switch (lowerCase) {
+                // Arrow keys.
+                case 'w':
+                    resultingKeyCode = KeyEvent.KEYCODE_DPAD_UP;
+                    break;
+                case 'a':
+                    resultingKeyCode = KeyEvent.KEYCODE_DPAD_LEFT;
+                    break;
+                case 's':
+                    resultingKeyCode = KeyEvent.KEYCODE_DPAD_DOWN;
+                    break;
+                case 'd':
+                    resultingKeyCode = KeyEvent.KEYCODE_DPAD_RIGHT;
+                    break;
+
+                // Page up and down.
+                case 'p':
+                    resultingKeyCode = KeyEvent.KEYCODE_PAGE_UP;
+                    break;
+                case 'n':
+                    resultingKeyCode = KeyEvent.KEYCODE_PAGE_DOWN;
+                    break;
+
+                // Some special keys:
+                case 't':
+                    resultingKeyCode = KeyEvent.KEYCODE_TAB;
+                    break;
+                case 'i':
+                    resultingKeyCode = KeyEvent.KEYCODE_INSERT;
+                    break;
+                case 'h':
+                    resultingCodePoint = '~';
+                    break;
+
+                // Special characters to input.
+                case 'u':
+                    resultingCodePoint = '_';
+                    break;
+                case 'l':
+                    resultingCodePoint = '|';
+                    break;
+
+                // Function keys.
+                case '1':
+                case '2':
+                case '3':
+                case '4':
+                case '5':
+                case '6':
+                case '7':
+                case '8':
+                case '9':
+                    resultingKeyCode = (codePoint - '1') + KeyEvent.KEYCODE_F1;
+                    break;
+                case '0':
+                    resultingKeyCode = KeyEvent.KEYCODE_F10;
+                    break;
+
+                // Other special keys.
+                case 'e':
+                    resultingCodePoint = /*Escape*/ 27;
+                    break;
+                case '.':
+                    resultingCodePoint = /*^.*/ 28;
+                    break;
+
+                case 'b': // alt+b, jumping backward in readline.
+                case 'f': // alf+f, jumping forward in readline.
+                case 'x': // alt+x, common in emacs.
+                    resultingCodePoint = lowerCase;
+                    altDown = true;
+                    break;
+
+                // Volume control.
+                case 'v':
+                    resultingCodePoint = -1;
+                    AudioManager audio = (AudioManager) mActivity.getSystemService(Context.AUDIO_SERVICE);
+                    audio.adjustSuggestedStreamVolume(AudioManager.ADJUST_SAME, AudioManager.USE_DEFAULT_STREAM_TYPE, AudioManager.FLAG_SHOW_UI);
+                    break;
+
+                // Writing mode:
+                case 'q':
+                    mActivity.toggleShowExtraKeys();
+                    break;
+            }
+
+            if (resultingKeyCode != -1) {
+                TerminalEmulator term = session.getEmulator();
+                session.write(KeyHandler.getCode(resultingKeyCode, 0, term.isCursorKeysApplicationMode(), term.isKeypadApplicationMode()));
+            } else if (resultingCodePoint != -1) {
+                session.writeCodePoint(altDown, resultingCodePoint);
+            }
+            return true;
+        } else if (ctrlDown) {
+            if (codePoint == 106 /* Ctrl+j or \n */ && !session.isRunning()) {
+                mActivity.removeFinishedSession(session);
+                return true;
+            }
+
+            List<TermuxPreferences.KeyboardShortcut> shortcuts = mActivity.mSettings.shortcuts;
+            if (!shortcuts.isEmpty()) {
+                int codePointLowerCase = Character.toLowerCase(codePoint);
+                for (int i = shortcuts.size() - 1; i >= 0; i--) {
+                    TermuxPreferences.KeyboardShortcut shortcut = shortcuts.get(i);
+                    if (codePointLowerCase == shortcut.codePoint) {
+                        switch (shortcut.shortcutAction) {
+                            case TermuxPreferences.SHORTCUT_ACTION_CREATE_SESSION:
+                                mActivity.addNewSession(false, null);
+                                return true;
+                            case TermuxPreferences.SHORTCUT_ACTION_PREVIOUS_SESSION:
+                                mActivity.switchToSession(false);
+                                return true;
+                            case TermuxPreferences.SHORTCUT_ACTION_NEXT_SESSION:
+                                mActivity.switchToSession(true);
+                                return true;
+                            case TermuxPreferences.SHORTCUT_ACTION_RENAME_SESSION:
+                                mActivity.renameSession(mActivity.getCurrentTermSession());
+                                return true;
+                        }
+                    }
+                }
+            }
+        }
+
+        return false;
+    }
+
+    @Override
+    public boolean onLongPress(MotionEvent event) {
+        return false;
+    }
+
+    /** Handle dedicated volume buttons as virtual keys if applicable. */
+    private boolean handleVirtualKeys(int keyCode, KeyEvent event, boolean down) {
+        InputDevice inputDevice = event.getDevice();
+        if (inputDevice != null && inputDevice.getKeyboardType() == InputDevice.KEYBOARD_TYPE_ALPHABETIC) {
+            // Do not steal dedicated buttons from a full external keyboard.
+            return false;
+        } else if (keyCode == KeyEvent.KEYCODE_VOLUME_DOWN) {
+            mVirtualControlKeyDown = down;
+            return true;
+        } else if (keyCode == KeyEvent.KEYCODE_VOLUME_UP) {
+            mVirtualFnKeyDown = down;
+            return true;
+        }
+        return false;
+    }
+
+
+}

app/src/main/java/com/termux/drawer/DrawerLayoutCompatApi21.java

@@ -1,88 +0,0 @@
-package com.termux.drawer;
-
-/*
- * Copyright (C) 2014 The Android Open Source Project
- *
- * Licensed under the Apache License, Version 2.0 (the "License");
- * you may not use this file except in compliance with the License.
- * You may obtain a copy of the License at
- *
- *      http://www.apache.org/licenses/LICENSE-2.0
- *
- * Unless required by applicable law or agreed to in writing, software
- * distributed under the License is distributed on an "AS IS" BASIS,
- * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
- * See the License for the specific language governing permissions and
- * limitations under the License.
- */
-
-import android.annotation.SuppressLint;
-import android.annotation.TargetApi;
-import android.content.Context;
-import android.content.res.TypedArray;
-import android.graphics.drawable.Drawable;
-import android.os.Build;
-import android.view.Gravity;
-import android.view.View;
-import android.view.ViewGroup;
-import android.view.WindowInsets;
-
-/**
- * Provides functionality for DrawerLayout unique to API 21
- */
-@SuppressLint("RtlHardcoded")
-@TargetApi(Build.VERSION_CODES.LOLLIPOP)
-class DrawerLayoutCompatApi21 {
-
-	private static final int[] THEME_ATTRS = { android.R.attr.colorPrimaryDark };
-
-	public static void configureApplyInsets(DrawerLayout drawerLayout) {
-		drawerLayout.setOnApplyWindowInsetsListener(new InsetsListener());
-		drawerLayout.setSystemUiVisibility(View.SYSTEM_UI_FLAG_LAYOUT_STABLE | View.SYSTEM_UI_FLAG_LAYOUT_FULLSCREEN);
-	}
-
-	public static void dispatchChildInsets(View child, Object insets, int gravity) {
-		WindowInsets wi = (WindowInsets) insets;
-		if (gravity == Gravity.LEFT) {
-			wi = wi.replaceSystemWindowInsets(wi.getSystemWindowInsetLeft(), wi.getSystemWindowInsetTop(), 0, wi.getSystemWindowInsetBottom());
-		} else if (gravity == Gravity.RIGHT) {
-			wi = wi.replaceSystemWindowInsets(0, wi.getSystemWindowInsetTop(), wi.getSystemWindowInsetRight(), wi.getSystemWindowInsetBottom());
-		}
-		child.dispatchApplyWindowInsets(wi);
-	}
-
-	public static void applyMarginInsets(ViewGroup.MarginLayoutParams lp, Object insets, int gravity) {
-		WindowInsets wi = (WindowInsets) insets;
-		if (gravity == Gravity.LEFT) {
-			wi = wi.replaceSystemWindowInsets(wi.getSystemWindowInsetLeft(), wi.getSystemWindowInsetTop(), 0, wi.getSystemWindowInsetBottom());
-		} else if (gravity == Gravity.RIGHT) {
-			wi = wi.replaceSystemWindowInsets(0, wi.getSystemWindowInsetTop(), wi.getSystemWindowInsetRight(), wi.getSystemWindowInsetBottom());
-		}
-		lp.leftMargin = wi.getSystemWindowInsetLeft();
-		lp.topMargin = wi.getSystemWindowInsetTop();
-		lp.rightMargin = wi.getSystemWindowInsetRight();
-		lp.bottomMargin = wi.getSystemWindowInsetBottom();
-	}
-
-	public static int getTopInset(Object insets) {
-		return insets != null ? ((WindowInsets) insets).getSystemWindowInsetTop() : 0;
-	}
-
-	public static Drawable getDefaultStatusBarBackground(Context context) {
-		final TypedArray a = context.obtainStyledAttributes(THEME_ATTRS);
-		try {
-			return a.getDrawable(0);
-		} finally {
-			a.recycle();
-		}
-	}
-
-	static class InsetsListener implements View.OnApplyWindowInsetsListener {
-		@Override
-		public WindowInsets onApplyWindowInsets(View v, WindowInsets insets) {
-			final DrawerLayout drawerLayout = (DrawerLayout) v;
-			drawerLayout.setChildInsets(insets, insets.getSystemWindowInsetTop() > 0);
-			return insets.consumeSystemWindowInsets();
-		}
-	}
-}

app/src/main/java/com/termux/drawer/package-info.java

@@ -1,10 +0,0 @@
-/**
- * Extraction (and some minor cleanup to get rid of warnings) of DrawerLayout from the
- * <a href="http://developer.android.com/tools/support-library/index.html">Android Support Library</a>.
- * 
- * Source at:
- * https://android.googlesource.com/platform/frameworks/support/+/refs/heads/master/v4/java/android/support/v4/widget/DrawerLayout.java
- * https://android.googlesource.com/platform/frameworks/support/+/refs/heads/master/v4/java/android/support/v4/widget/ViewDragHelper.java
- */
-package com.termux.drawer;
-

app/src/main/java/com/termux/filepicker/TermuxDocumentsProvider.java

@@ -0,0 +1,242 @@
+package com.termux.filepicker;
+
+import android.content.res.AssetFileDescriptor;
+import android.database.Cursor;
+import android.database.MatrixCursor;
+import android.graphics.Point;
+import android.os.CancellationSignal;
+import android.os.ParcelFileDescriptor;
+import android.provider.DocumentsContract.Document;
+import android.provider.DocumentsContract.Root;
+import android.provider.DocumentsProvider;
+import android.webkit.MimeTypeMap;
+
+import com.termux.R;
+import com.termux.app.TermuxService;
+
+import java.io.File;
+import java.io.FileNotFoundException;
+import java.io.IOException;
+import java.util.Collections;
+import java.util.LinkedList;
+
+/**
+ * A document provider for the Storage Access Framework which exposes the files in the
+ * $HOME/ folder to other apps.
+ * <p/>
+ * Note that this replaces providing an activity matching the ACTION_GET_CONTENT intent:
+ * <p/>
+ * "A document provider and ACTION_GET_CONTENT should be considered mutually exclusive. If you
+ * support both of them simultaneously, your app will appear twice in the system picker UI,
+ * offering two different ways of accessing your stored data. This would be confusing for users."
+ * - http://developer.android.com/guide/topics/providers/document-provider.html#43
+ */
+public class TermuxDocumentsProvider extends DocumentsProvider {
+
+    private static final String ALL_MIME_TYPES = "*/*";
+
+    private static final File BASE_DIR = new File(TermuxService.HOME_PATH);
+
+
+    // The default columns to return information about a root if no specific
+    // columns are requested in a query.
+    private static final String[] DEFAULT_ROOT_PROJECTION = new String[]{
+        Root.COLUMN_ROOT_ID,
+        Root.COLUMN_MIME_TYPES,
+        Root.COLUMN_FLAGS,
+        Root.COLUMN_ICON,
+        Root.COLUMN_TITLE,
+        Root.COLUMN_SUMMARY,
+        Root.COLUMN_DOCUMENT_ID,
+        Root.COLUMN_AVAILABLE_BYTES
+    };
+
+    // The default columns to return information about a document if no specific
+    // columns are requested in a query.
+    private static final String[] DEFAULT_DOCUMENT_PROJECTION = new String[]{
+        Document.COLUMN_DOCUMENT_ID,
+        Document.COLUMN_MIME_TYPE,
+        Document.COLUMN_DISPLAY_NAME,
+        Document.COLUMN_LAST_MODIFIED,
+        Document.COLUMN_FLAGS,
+        Document.COLUMN_SIZE
+    };
+
+    @Override
+    public Cursor queryRoots(String[] projection) throws FileNotFoundException {
+        final MatrixCursor result = new MatrixCursor(projection != null ? projection : DEFAULT_ROOT_PROJECTION);
+        @SuppressWarnings("ConstantConditions") final String applicationName = getContext().getString(R.string.application_name);
+
+        final MatrixCursor.RowBuilder row = result.newRow();
+        row.add(Root.COLUMN_ROOT_ID, getDocIdForFile(BASE_DIR));
+        row.add(Root.COLUMN_DOCUMENT_ID, getDocIdForFile(BASE_DIR));
+        row.add(Root.COLUMN_SUMMARY, null);
+        row.add(Root.COLUMN_FLAGS, Root.FLAG_SUPPORTS_CREATE | Root.FLAG_SUPPORTS_SEARCH);
+        row.add(Root.COLUMN_TITLE, applicationName);
+        row.add(Root.COLUMN_MIME_TYPES, ALL_MIME_TYPES);
+        row.add(Root.COLUMN_AVAILABLE_BYTES, BASE_DIR.getFreeSpace());
+        row.add(Root.COLUMN_ICON, R.mipmap.ic_launcher);
+        return result;
+    }
+
+    @Override
+    public Cursor queryDocument(String documentId, String[] projection) throws FileNotFoundException {
+        final MatrixCursor result = new MatrixCursor(projection != null ? projection : DEFAULT_DOCUMENT_PROJECTION);
+        includeFile(result, documentId, null);
+        return result;
+    }
+
+    @Override
+    public Cursor queryChildDocuments(String parentDocumentId, String[] projection, String sortOrder) throws FileNotFoundException {
+        final MatrixCursor result = new MatrixCursor(projection != null ? projection : DEFAULT_DOCUMENT_PROJECTION);
+        final File parent = getFileForDocId(parentDocumentId);
+        for (File file : parent.listFiles()) {
+            if (!file.getName().startsWith(".")) {
+                includeFile(result, null, file);
+            }
+        }
+        return result;
+    }
+
+    @Override
+    public ParcelFileDescriptor openDocument(final String documentId, String mode, CancellationSignal signal) throws FileNotFoundException {
+        final File file = getFileForDocId(documentId);
+        final int accessMode = ParcelFileDescriptor.parseMode(mode);
+        return ParcelFileDescriptor.open(file, accessMode);
+    }
+
+    @Override
+    public AssetFileDescriptor openDocumentThumbnail(String documentId, Point sizeHint, CancellationSignal signal) throws FileNotFoundException {
+        final File file = getFileForDocId(documentId);
+        final ParcelFileDescriptor pfd = ParcelFileDescriptor.open(file, ParcelFileDescriptor.MODE_READ_ONLY);
+        return new AssetFileDescriptor(pfd, 0, file.length());
+    }
+
+    @Override
+    public boolean onCreate() {
+        return true;
+    }
+
+    @Override
+    public void deleteDocument(String documentId) throws FileNotFoundException {
+        File file = getFileForDocId(documentId);
+        if (!file.delete()) {
+            throw new FileNotFoundException("Failed to delete document with id " + documentId);
+        }
+    }
+
+    @Override
+    public String getDocumentType(String documentId) throws FileNotFoundException {
+        File file = getFileForDocId(documentId);
+        return getMimeType(file);
+    }
+
+    @Override
+    public Cursor querySearchDocuments(String rootId, String query, String[] projection) throws FileNotFoundException {
+        final MatrixCursor result = new MatrixCursor(projection != null ? projection : DEFAULT_DOCUMENT_PROJECTION);
+        final File parent = getFileForDocId(rootId);
+
+        // This example implementation searches file names for the query and doesn't rank search
+        // results, so we can stop as soon as we find a sufficient number of matches.  Other
+        // implementations might rank results and use other data about files, rather than the file
+        // name, to produce a match.
+        final LinkedList<File> pending = new LinkedList<>();
+        pending.add(parent);
+
+        final int MAX_SEARCH_RESULTS = 50;
+        while (!pending.isEmpty() && result.getCount() < MAX_SEARCH_RESULTS) {
+            final File file = pending.removeFirst();
+            // Avoid folders outside the $HOME folders linked in to symlinks (to avoid e.g. search
+            // through the whole SD card).
+            boolean isInsideHome;
+            try {
+                isInsideHome = file.getCanonicalPath().startsWith(TermuxService.HOME_PATH);
+            } catch (IOException e) {
+                isInsideHome = true;
+            }
+            final boolean isHidden = file.getName().startsWith(".");
+            if (isInsideHome && !isHidden) {
+                if (file.isDirectory()) {
+                    Collections.addAll(pending, file.listFiles());
+                } else {
+                    if (file.getName().toLowerCase().contains(query)) {
+                        includeFile(result, null, file);
+                    }
+                }
+            }
+        }
+
+        return result;
+    }
+
+    /**
+     * Get the document id given a file. This document id must be consistent across time as other
+     * applications may save the ID and use it to reference documents later.
+     * <p/>
+     * The reverse of @{link #getFileForDocId}.
+     */
+    private static String getDocIdForFile(File file) {
+        return file.getAbsolutePath();
+    }
+
+    /**
+     * Get the file given a document id (the reverse of {@link #getDocIdForFile(File)}).
+     */
+    private static File getFileForDocId(String docId) throws FileNotFoundException {
+        final File f = new File(docId);
+        if (!f.exists()) throw new FileNotFoundException(f.getAbsolutePath() + " not found");
+        return f;
+    }
+
+    private static String getMimeType(File file) {
+        if (file.isDirectory()) {
+            return Document.MIME_TYPE_DIR;
+        } else {
+            final String name = file.getName();
+            final int lastDot = name.lastIndexOf('.');
+            if (lastDot >= 0) {
+                final String extension = name.substring(lastDot + 1);
+                final String mime = MimeTypeMap.getSingleton().getMimeTypeFromExtension(extension);
+                if (mime != null) return mime;
+            }
+            return "application/octet-stream";
+        }
+    }
+
+    /**
+     * Add a representation of a file to a cursor.
+     *
+     * @param result the cursor to modify
+     * @param docId  the document ID representing the desired file (may be null if given file)
+     * @param file   the File object representing the desired file (may be null if given docID)
+     */
+    private void includeFile(MatrixCursor result, String docId, File file)
+        throws FileNotFoundException {
+        if (docId == null) {
+            docId = getDocIdForFile(file);
+        } else {
+            file = getFileForDocId(docId);
+        }
+
+        int flags = 0;
+        if (file.isDirectory()) {
+            if (file.isDirectory() && file.canWrite()) flags |= Document.FLAG_DIR_SUPPORTS_CREATE;
+        } else if (file.canWrite()) {
+            flags |= Document.FLAG_SUPPORTS_WRITE | Document.FLAG_SUPPORTS_DELETE;
+        }
+
+        final String displayName = file.getName();
+        final String mimeType = getMimeType(file);
+        if (mimeType.startsWith("image/")) flags |= Document.FLAG_SUPPORTS_THUMBNAIL;
+
+        final MatrixCursor.RowBuilder row = result.newRow();
+        row.add(Document.COLUMN_DOCUMENT_ID, docId);
+        row.add(Document.COLUMN_DISPLAY_NAME, displayName);
+        row.add(Document.COLUMN_SIZE, file.length());
+        row.add(Document.COLUMN_MIME_TYPE, mimeType);
+        row.add(Document.COLUMN_LAST_MODIFIED, file.lastModified());
+        row.add(Document.COLUMN_FLAGS, flags);
+        row.add(Document.COLUMN_ICON, R.mipmap.ic_launcher);
+    }
+
+}

app/src/main/java/com/termux/filepicker/TermuxFilePickerActivity.java

@@ -1,106 +0,0 @@
-package com.termux.filepicker;
-
-import android.annotation.SuppressLint;
-import android.app.Activity;
-import android.app.ListActivity;
-import android.content.Intent;
-import android.net.Uri;
-import android.os.Bundle;
-import android.view.MenuItem;
-import android.view.View;
-import android.widget.ArrayAdapter;
-import android.widget.ListView;
-
-import com.termux.R;
-
-import java.io.File;
-import java.util.ArrayList;
-import java.util.Arrays;
-import java.util.Collections;
-import java.util.Comparator;
-import java.util.List;
-
-/** Activity allowing picking files from the $HOME folder. */
-public class TermuxFilePickerActivity extends ListActivity {
-
-    @SuppressLint("SdCardPath")
-    final String TERMUX_HOME = "/data/data/com.termux/files/home";
-
-    private File mCurrentDirectory;
-    private final List<File> mFiles = new ArrayList<>();
-    private final List<String> mFileNames = new ArrayList<>();
-    private ArrayAdapter mAdapter;
-
-    @Override
-    protected void onCreate(Bundle savedInstanceState) {
-        super.onCreate(savedInstanceState);
-        setContentView(R.layout.file_picker);
-
-        mAdapter = new ArrayAdapter<>(this, android.R.layout.simple_list_item_1, mFileNames);
-
-        enterDirectory(new File(TERMUX_HOME));
-        setListAdapter(mAdapter);
-    }
-
-    @Override
-    public boolean onOptionsItemSelected(MenuItem item) {
-        int id = item.getItemId();
-        if (id == android.R.id.home) {
-            enterDirectory(mCurrentDirectory.getParentFile());
-            return true;
-        } else {
-            return super.onOptionsItemSelected(item);
-        }
-    }
-
-    @Override
-    protected void onListItemClick(ListView l, View v, int position, long id) {
-        super.onListItemClick(l, v, position, id);
-        File requestFile = mFiles.get(position);
-        if (requestFile.isDirectory()) {
-            enterDirectory(requestFile);
-        } else {
-            Uri returnUri = Uri.withAppendedPath(Uri.parse("content://com.termux.filepicker.provider/"), requestFile.getAbsolutePath());
-            Intent returnIntent = new Intent().setData(returnUri);
-            returnIntent.addFlags(Intent.FLAG_GRANT_READ_URI_PERMISSION);
-            setResult(Activity.RESULT_OK, returnIntent);
-            finish();
-        }
-    }
-
-    void enterDirectory(File directory) {
-        getActionBar().setDisplayHomeAsUpEnabled(!directory.getAbsolutePath().equals(TERMUX_HOME));
-
-        String title = directory.getAbsolutePath() + "/";
-        if (title.startsWith(TERMUX_HOME)) {
-            title = "~" + title.substring(TERMUX_HOME.length(), title.length());
-        }
-        setTitle(title);
-
-        mCurrentDirectory = directory;
-        mFiles.clear();
-        mFileNames.clear();
-        mFiles.addAll(Arrays.asList(mCurrentDirectory.listFiles()));
-
-        Collections.sort(mFiles, new Comparator<File>() {
-            @Override
-            public int compare(File f1, File f2) {
-                final String n1 = f1.getName();
-                final String n2 = f2.getName();
-                // Display dot folders last:
-                if (n1.startsWith(".") && !n2.startsWith(".")) {
-                    return 1;
-                } else if (n2.startsWith(".") && !n1.startsWith(".")) {
-                    return -1;
-                }
-                return n1.compareToIgnoreCase(n2);
-            }
-        });
-
-        for (File file : mFiles) {
-            mFileNames.add(file.getName() + (file.isDirectory() ? "/" : ""));
-        }
-        mAdapter.notifyDataSetChanged();
-    }
-
-}

app/src/main/java/com/termux/filepicker/TermuxFilePickerProvider.java

@@ -1,65 +0,0 @@
-package com.termux.filepicker;
-
-
-import android.content.ContentProvider;
-import android.content.ContentValues;
-import android.database.Cursor;
-import android.net.Uri;
-import android.os.ParcelFileDescriptor;
-import android.support.annotation.NonNull;
-import android.webkit.MimeTypeMap;
-
-import java.io.File;
-import java.io.FileNotFoundException;
-
-/** Provider of files content uris picked from {@link com.termux.filepicker.TermuxFilePickerActivity}. */
-public class TermuxFilePickerProvider extends ContentProvider {
-    @Override
-    public boolean onCreate() {
-        return true;
-    }
-
-    @Override
-    public Cursor query(@NonNull Uri uri, String[] projection, String selection, String[] selectionArgs, String sortOrder) {
-        return null;
-    }
-
-    @Override
-    public String getType(@NonNull Uri uri) {
-		String contentType = null;
-		String path = uri.getPath();
-		int lastDotIndex = path.lastIndexOf('.');
-		String possibleFileExtension = path.substring(lastDotIndex + 1, path.length());
-		if (possibleFileExtension.contains("/")) {
-			// The dot was in the path, so not a file extension.
-		} else {
-			MimeTypeMap mimeTypes = MimeTypeMap.getSingleton();
-			// Lower casing makes it work with e.g. "JPG":
-			contentType = mimeTypes.getMimeTypeFromExtension(possibleFileExtension.toLowerCase());
-		}
-
-		if (contentType == null) contentType = "application/octet-stream";
-		return contentType;
-    }
-
-    @Override
-    public Uri insert(@NonNull Uri uri, ContentValues values) {
-        return null;
-    }
-
-    @Override
-    public int delete(@NonNull Uri uri, String selection, String[] selectionArgs) {
-        return 0;
-    }
-
-    @Override
-    public int update(@NonNull Uri uri, ContentValues values, String selection, String[] selectionArgs) {
-        return 0;
-    }
-
-    @Override
-    public ParcelFileDescriptor openFile(@NonNull Uri uri, @NonNull String mode) throws FileNotFoundException {
-        File file = new File(uri.getPath());
-        return ParcelFileDescriptor.open(file, ParcelFileDescriptor.MODE_READ_ONLY);
-    }
-}

app/src/main/java/com/termux/filepicker/TermuxFileReceiverActivity.java

@@ -35,7 +35,7 @@ public class TermuxFileReceiverActivity extends Activity {
      * name input dialog to be implicitly dismissed, and we do not want to finish the activity directly
      * when showing the error dialog.
      */
-    private boolean mFinishOnDismissNameDialog = true;
+    boolean mFinishOnDismissNameDialog = true;
 
     @Override
     protected void onResume() {
@@ -46,16 +46,6 @@ public class TermuxFileReceiverActivity extends Activity {
         final String type = intent.getType();
         final String scheme = intent.getScheme();
 
-        if (intent.getExtras() == null) {
-            Log.e("termux", "NULL EXTRAS");
-        } else {
-            for (String key : intent.getExtras().keySet()) {
-                Object value = intent.getExtras().get(key);
-                Log.d("termux", String.format("Extra %s %s (%s)", key,
-                    value.toString(), value.getClass().getName()));
-            }
-        }
-
         if (Intent.ACTION_SEND.equals(action) && type != null) {
             final String sharedText = intent.getStringExtra(Intent.EXTRA_TEXT);
             final Uri sharedUri = intent.getParcelableExtra(Intent.EXTRA_STREAM);
@@ -74,9 +64,9 @@ public class TermuxFileReceiverActivity extends Activity {
             } else {
                 showErrorDialogAndQuit("Send action without content - nothing to save.");
             }
-        } else if (scheme.equals("content")) {
+        } else if ("content".equals(scheme)) {
             handleContentUri(intent.getData(), intent.getStringExtra(Intent.EXTRA_TITLE));
-        } else if (scheme.equals("file")) {
+        } else if ("file".equals(scheme)) {
             // When e.g. clicking on a downloaded apk:
             String path = intent.getData().getPath();
             File file = new File(path);
@@ -87,7 +77,7 @@ public class TermuxFileReceiverActivity extends Activity {
                 showErrorDialogAndQuit("Cannot open file: " + e.getMessage() + ".");
             }
         } else {
-            showErrorDialogAndQuit("Unhandled scheme: " + intent.getScheme() + ".");
+            showErrorDialogAndQuit("Unable to receive any file or URL.");
         }
     }
 
@@ -129,54 +119,55 @@ public class TermuxFileReceiverActivity extends Activity {
     }
 
     void promptNameAndSave(final InputStream in, final String attachmentFileName) {
-        DialogUtils.textInput(this, R.string.file_received_title, attachmentFileName
+        DialogUtils.textInput(this, R.string.file_received_title, attachmentFileName, R.string.file_received_edit_button, new DialogUtils.TextSetListener() {
-            , android.R.string.ok, new DialogUtils.TextSetListener() {
+                @Override
-            @Override
+                public void onTextSet(String text) {
-            public void onTextSet(final String text) {
+                    File outFile = saveStreamWithName(in, text);
-                if (saveStreamWithName(in, text) == null) return;
+                    if (outFile == null) return;
-                finish();
-            }
-        }, R.string.file_received_open_folder_button, new DialogUtils.TextSetListener() {
-            @Override
-            public void onTextSet(String text) {
-                if (saveStreamWithName(in, text) == null) return;
 
-                Intent executeIntent = new Intent(TermuxService.ACTION_EXECUTE);
+                    final File editorProgramFile = new File(EDITOR_PROGRAM);
-                executeIntent.putExtra(TermuxService.EXTRA_CURRENT_WORKING_DIRECTORY, TERMUX_RECEIVEDIR);
+                    if (!editorProgramFile.isFile()) {
-                executeIntent.setClass(TermuxFileReceiverActivity.this, TermuxService.class);
+                        showErrorDialogAndQuit("The following file does not exist:\n$HOME/bin/termux-file-editor\n\n"
-                startService(executeIntent);
+                            + "Create this file as a script or a symlink - it will be called with the received file as only argument.");
-                finish();
+                        return;
-            }
+                    }
-        }, R.string.file_received_edit_button, new DialogUtils.TextSetListener() {
-            @Override
-            public void onTextSet(String text) {
-                File outFile = saveStreamWithName(in, text);
-                if (outFile == null) return;
 
-                final File editorProgramFile = new File(EDITOR_PROGRAM);
+                    // Do this for the user if necessary:
-                if (!editorProgramFile.isFile()) {
+                    //noinspection ResultOfMethodCallIgnored
-                    showErrorDialogAndQuit("The following file does not exist:\n$HOME/bin/termux-file-editor\n\n"
+                    editorProgramFile.setExecutable(true);
-                        + "Create this file as a script or a symlink - it will be called with the received file as only argument.");
+
-                    return;
+                    final Uri scriptUri = new Uri.Builder().scheme("file").path(EDITOR_PROGRAM).build();
+
+                    Intent executeIntent = new Intent(TermuxService.ACTION_EXECUTE, scriptUri);
+                    executeIntent.setClass(TermuxFileReceiverActivity.this, TermuxService.class);
+                    executeIntent.putExtra(TermuxService.EXTRA_ARGUMENTS, new String[]{outFile.getAbsolutePath()});
+                    startService(executeIntent);
+                    finish();
                 }
+            },
+            R.string.file_received_open_folder_button, new DialogUtils.TextSetListener() {
+                @Override
+                public void onTextSet(String text) {
+                    if (saveStreamWithName(in, text) == null) return;
 
-                // Do this for the user if necessary:
+                    Intent executeIntent = new Intent(TermuxService.ACTION_EXECUTE);
-                editorProgramFile.setExecutable(true);
+                    executeIntent.putExtra(TermuxService.EXTRA_CURRENT_WORKING_DIRECTORY, TERMUX_RECEIVEDIR);
-
+                    executeIntent.setClass(TermuxFileReceiverActivity.this, TermuxService.class);
-                final Uri scriptUri = new Uri.Builder().scheme("file").path(EDITOR_PROGRAM).build();
+                    startService(executeIntent);
-
+                    finish();
-                Intent executeIntent = new Intent(TermuxService.ACTION_EXECUTE, scriptUri);
+                }
-                executeIntent.setClass(TermuxFileReceiverActivity.this, TermuxService.class);
+            },
-                executeIntent.putExtra(TermuxService.EXTRA_ARGUMENTS, new String[]{outFile.getAbsolutePath()});
+            android.R.string.cancel, new DialogUtils.TextSetListener() {
-                startService(executeIntent);
+                @Override
-                finish();
+                public void onTextSet(final String text) {
-            }
+                    finish();
-        }, new DialogInterface.OnDismissListener() {
+                }
-            @Override
+            }, new DialogInterface.OnDismissListener() {
-            public void onDismiss(DialogInterface dialog) {
+                @Override
-                if (mFinishOnDismissNameDialog) finish();
+                public void onDismiss(DialogInterface dialog) {
-            }
+                    if (mFinishOnDismissNameDialog) finish();
-        });
+                }
+            });
     }
 
     public File saveStreamWithName(InputStream in, String attachmentFileName) {
@@ -211,6 +202,7 @@ public class TermuxFileReceiverActivity extends Activity {
         }
 
         // Do this for the user if necessary:
+        //noinspection ResultOfMethodCallIgnored
         urlOpenerProgramFile.setExecutable(true);
 
         final Uri urlOpenerProgramUri = new Uri.Builder().scheme("file").path(URL_OPENER_PROGRAM).build();

app/src/main/java/com/termux/terminal/ByteQueue.java

@@ -1,108 +0,0 @@
-package com.termux.terminal;
-
-/** A circular byte buffer allowing one producer and one consumer thread. */
-final class ByteQueue {
-
-	private final byte[] mBuffer;
-	private int mHead;
-	private int mStoredBytes;
-	private boolean mOpen = true;
-
-	public ByteQueue(int size) {
-		mBuffer = new byte[size];
-	}
-
-	public synchronized void close() {
-		mOpen = false;
-		notify();
-	}
-
-	public synchronized int read(byte[] buffer, boolean block) {
-		while (mStoredBytes == 0 && mOpen) {
-			if (block) {
-				try {
-					wait();
-				} catch (InterruptedException e) {
-					// Ignore.
-				}
-			} else {
-				return 0;
-			}
-		}
-		if (!mOpen) return -1;
-
-		int totalRead = 0;
-		int bufferLength = mBuffer.length;
-		boolean wasFull = bufferLength == mStoredBytes;
-		int length = buffer.length;
-		int offset = 0;
-		while (length > 0 && mStoredBytes > 0) {
-			int oneRun = Math.min(bufferLength - mHead, mStoredBytes);
-			int bytesToCopy = Math.min(length, oneRun);
-			System.arraycopy(mBuffer, mHead, buffer, offset, bytesToCopy);
-			mHead += bytesToCopy;
-			if (mHead >= bufferLength) mHead = 0;
-			mStoredBytes -= bytesToCopy;
-			length -= bytesToCopy;
-			offset += bytesToCopy;
-			totalRead += bytesToCopy;
-		}
-		if (wasFull) notify();
-		return totalRead;
-	}
-
-	/**
-	 * Attempt to write the specified portion of the provided buffer to the queue.
-	 * 
-	 * Returns whether the output was totally written, false if it was closed before.
-	 */
-	public boolean write(byte[] buffer, int offset, int lengthToWrite) {
-		if (lengthToWrite + offset > buffer.length) {
-			throw new IllegalArgumentException("length + offset > buffer.length");
-		} else if (lengthToWrite <= 0) {
-			throw new IllegalArgumentException("length <= 0");
-		}
-
-		final int bufferLength = mBuffer.length;
-
-		synchronized (this) {
-			while (lengthToWrite > 0) {
-				while (bufferLength == mStoredBytes && mOpen) {
-					try {
-						wait();
-					} catch (InterruptedException e) {
-						// Ignore.
-					}
-				}
-				if (!mOpen) return false;
-				final boolean wasEmpty = mStoredBytes == 0;
-				int bytesToWriteBeforeWaiting = Math.min(lengthToWrite, bufferLength - mStoredBytes);
-				lengthToWrite -= bytesToWriteBeforeWaiting;
-
-				while (bytesToWriteBeforeWaiting > 0) {
-					int tail = mHead + mStoredBytes;
-					int oneRun;
-					if (tail >= bufferLength) {
-						// Buffer: [.............]
-						// ________________H_______T
-						// =>
-						// Buffer: [.............]
-						// ___________T____H
-						// onRun= _____----_
-						tail = tail - bufferLength;
-						oneRun = mHead - tail;
-					} else {
-						oneRun = bufferLength - tail;
-					}
-					int bytesToCopy = Math.min(oneRun, bytesToWriteBeforeWaiting);
-					System.arraycopy(buffer, offset, mBuffer, tail, bytesToCopy);
-					offset += bytesToCopy;
-					bytesToWriteBeforeWaiting -= bytesToCopy;
-					mStoredBytes += bytesToCopy;
-				}
-				if (wasEmpty) notify();
-			}
-		}
-		return true;
-	}
-}

app/src/main/java/com/termux/terminal/JNI.java

@@ -1,55 +0,0 @@
-package com.termux.terminal;
-
-/**
- * Native methods for creating and managing pseudoterminal subprocesses. C code is in jni/termux.c.
- */
-final class JNI {
-
-	static {
-		System.loadLibrary("termux");
-	}
-
-	/**
-	 * Create a subprocess. Differs from {@link ProcessBuilder} in that a pseudoterminal is used to communicate with the
-	 * subprocess.
-	 * 
-	 * Callers are responsible for calling {@link #close(int)} on the returned file descriptor.
-	 * 
-	 * @param cmd
-	 *            The command to execute
-	 * @param cwd
-	 *            The current working directory for the executed command
-	 * @param args
-	 *            An array of arguments to the command
-	 * @param envVars
-	 *            An array of strings of the form "VAR=value" to be added to the environment of the process
-	 * @param processId
-	 *            A one-element array to which the process ID of the started process will be written.
-	 * @return the file descriptor resulting from opening /dev/ptmx master device. The sub process will have opened the
-	 *         slave device counterpart (/dev/pts/$N) and have it as stdint, stdout and stderr.
-	 */
-	public static native int createSubprocess(String cmd, String cwd, String[] args, String[] envVars, int[] processId, int rows, int columns);
-
-	/** Set the window size for a given pty, which allows connected programs to learn how large their screen is. */
-	public static native void setPtyWindowSize(int fd, int rows, int cols);
-
-	/**
-	 * Causes the calling thread to wait for the process associated with the receiver to finish executing.
-	 * 
-	 * @return if >= 0, the exit status of the process. If < 0, the signal causing the process to stop negated.
-	 */
-	public static native int waitFor(int processId);
-
-	/**
-	 * Send SIGHUP to a process group.
-	 * 
-	 * There exists a kill(2) system call wrapper in {@link android.os.Process#sendSignal(int, int)}, but that makes a
-	 * "if (pid > 0)" check so cannot be used for sending to a process group:
-	 * https://android.googlesource.com/platform/frameworks/base/+/donut-release/core/jni/android_util_Process.cpp
-	 */
-	public static native void hangupProcessGroup(int processId);
-
-	/** Close a file descriptor through the close(2) system call. */
-	public static native void close(int fileDescriptor);
-
-}

app/src/main/java/com/termux/terminal/KeyHandler.java

@@ -1,310 +0,0 @@
-package com.termux.terminal;
-
-import static android.view.KeyEvent.KEYCODE_BREAK;
-import static android.view.KeyEvent.KEYCODE_DEL;
-import static android.view.KeyEvent.KEYCODE_DPAD_CENTER;
-import static android.view.KeyEvent.KEYCODE_DPAD_DOWN;
-import static android.view.KeyEvent.KEYCODE_DPAD_LEFT;
-import static android.view.KeyEvent.KEYCODE_DPAD_RIGHT;
-import static android.view.KeyEvent.KEYCODE_DPAD_UP;
-import static android.view.KeyEvent.KEYCODE_ENTER;
-import static android.view.KeyEvent.KEYCODE_ESCAPE;
-import static android.view.KeyEvent.KEYCODE_F1;
-import static android.view.KeyEvent.KEYCODE_F10;
-import static android.view.KeyEvent.KEYCODE_F11;
-import static android.view.KeyEvent.KEYCODE_F12;
-import static android.view.KeyEvent.KEYCODE_F2;
-import static android.view.KeyEvent.KEYCODE_F3;
-import static android.view.KeyEvent.KEYCODE_F4;
-import static android.view.KeyEvent.KEYCODE_F5;
-import static android.view.KeyEvent.KEYCODE_F6;
-import static android.view.KeyEvent.KEYCODE_F7;
-import static android.view.KeyEvent.KEYCODE_F8;
-import static android.view.KeyEvent.KEYCODE_F9;
-import static android.view.KeyEvent.KEYCODE_FORWARD_DEL;
-import static android.view.KeyEvent.KEYCODE_INSERT;
-import static android.view.KeyEvent.KEYCODE_MOVE_END;
-import static android.view.KeyEvent.KEYCODE_NUMPAD_0;
-import static android.view.KeyEvent.KEYCODE_NUMPAD_1;
-import static android.view.KeyEvent.KEYCODE_NUMPAD_2;
-import static android.view.KeyEvent.KEYCODE_NUMPAD_3;
-import static android.view.KeyEvent.KEYCODE_NUMPAD_4;
-import static android.view.KeyEvent.KEYCODE_NUMPAD_5;
-import static android.view.KeyEvent.KEYCODE_NUMPAD_6;
-import static android.view.KeyEvent.KEYCODE_NUMPAD_7;
-import static android.view.KeyEvent.KEYCODE_NUMPAD_8;
-import static android.view.KeyEvent.KEYCODE_NUMPAD_9;
-import static android.view.KeyEvent.KEYCODE_NUMPAD_ADD;
-import static android.view.KeyEvent.KEYCODE_NUMPAD_COMMA;
-import static android.view.KeyEvent.KEYCODE_NUMPAD_DIVIDE;
-import static android.view.KeyEvent.KEYCODE_NUMPAD_DOT;
-import static android.view.KeyEvent.KEYCODE_NUMPAD_ENTER;
-import static android.view.KeyEvent.KEYCODE_NUMPAD_EQUALS;
-import static android.view.KeyEvent.KEYCODE_NUMPAD_MULTIPLY;
-import static android.view.KeyEvent.KEYCODE_NUMPAD_SUBTRACT;
-import static android.view.KeyEvent.KEYCODE_NUM_LOCK;
-import static android.view.KeyEvent.KEYCODE_PAGE_DOWN;
-import static android.view.KeyEvent.KEYCODE_PAGE_UP;
-import static android.view.KeyEvent.KEYCODE_SYSRQ;
-import static android.view.KeyEvent.KEYCODE_TAB;
-import static android.view.KeyEvent.KEYCODE_HOME;
-
-import java.util.HashMap;
-import java.util.Map;
-
-import android.view.KeyEvent;
-
-public final class KeyHandler {
-
-	public static final int KEYMOD_ALT = 0x80000000;
-	public static final int KEYMOD_CTRL = 0x40000000;
-	public static final int KEYMOD_SHIFT = 0x20000000;
-
-	private static final Map<String, Integer> TERMCAP_TO_KEYCODE = new HashMap<>();
-	static {
-		// terminfo: http://pubs.opengroup.org/onlinepubs/7990989799/xcurses/terminfo.html
-		// termcap: http://man7.org/linux/man-pages/man5/termcap.5.html
-		TERMCAP_TO_KEYCODE.put("%i", KEYMOD_SHIFT | KEYCODE_DPAD_RIGHT);
-		TERMCAP_TO_KEYCODE.put("#2", KEYMOD_SHIFT | KEYCODE_HOME); // Shifted home
-		TERMCAP_TO_KEYCODE.put("#4", KEYMOD_SHIFT | KEYCODE_DPAD_LEFT);
-		TERMCAP_TO_KEYCODE.put("*7", KEYMOD_SHIFT | KEYCODE_MOVE_END); // Shifted end key
-
-		TERMCAP_TO_KEYCODE.put("k1", KEYCODE_F1);
-		TERMCAP_TO_KEYCODE.put("k2", KEYCODE_F2);
-		TERMCAP_TO_KEYCODE.put("k3", KEYCODE_F3);
-		TERMCAP_TO_KEYCODE.put("k4", KEYCODE_F4);
-		TERMCAP_TO_KEYCODE.put("k5", KEYCODE_F5);
-		TERMCAP_TO_KEYCODE.put("k6", KEYCODE_F6);
-		TERMCAP_TO_KEYCODE.put("k7", KEYCODE_F7);
-		TERMCAP_TO_KEYCODE.put("k8", KEYCODE_F8);
-		TERMCAP_TO_KEYCODE.put("k9", KEYCODE_F9);
-		TERMCAP_TO_KEYCODE.put("k;", KEYCODE_F10);
-		TERMCAP_TO_KEYCODE.put("F1", KEYCODE_F11);
-		TERMCAP_TO_KEYCODE.put("F2", KEYCODE_F12);
-		TERMCAP_TO_KEYCODE.put("F3", KEYMOD_SHIFT | KEYCODE_F1);
-		TERMCAP_TO_KEYCODE.put("F4", KEYMOD_SHIFT | KEYCODE_F2);
-		TERMCAP_TO_KEYCODE.put("F5", KEYMOD_SHIFT | KEYCODE_F3);
-		TERMCAP_TO_KEYCODE.put("F6", KEYMOD_SHIFT | KEYCODE_F4);
-		TERMCAP_TO_KEYCODE.put("F7", KEYMOD_SHIFT | KEYCODE_F5);
-		TERMCAP_TO_KEYCODE.put("F8", KEYMOD_SHIFT | KEYCODE_F6);
-		TERMCAP_TO_KEYCODE.put("F9", KEYMOD_SHIFT | KEYCODE_F7);
-		TERMCAP_TO_KEYCODE.put("FA", KEYMOD_SHIFT | KEYCODE_F8);
-		TERMCAP_TO_KEYCODE.put("FB", KEYMOD_SHIFT | KEYCODE_F9);
-		TERMCAP_TO_KEYCODE.put("FC", KEYMOD_SHIFT | KEYCODE_F10);
-		TERMCAP_TO_KEYCODE.put("FD", KEYMOD_SHIFT | KEYCODE_F11);
-		TERMCAP_TO_KEYCODE.put("FE", KEYMOD_SHIFT | KEYCODE_F12);
-
-		TERMCAP_TO_KEYCODE.put("kb", KEYCODE_DEL); // backspace key
-
-		TERMCAP_TO_KEYCODE.put("kd", KEYCODE_DPAD_DOWN); // terminfo=kcud1, down-arrow key
-		TERMCAP_TO_KEYCODE.put("kh", KeyEvent.KEYCODE_HOME);
-		TERMCAP_TO_KEYCODE.put("kl", KEYCODE_DPAD_LEFT);
-		TERMCAP_TO_KEYCODE.put("kr", KEYCODE_DPAD_RIGHT);
-
-		// K1=Upper left of keypad:
-		// t_K1 <kHome> keypad home key
-		// t_K3 <kPageUp> keypad page-up key
-		// t_K4 <kEnd> keypad end key
-		// t_K5 <kPageDown> keypad page-down key
-		TERMCAP_TO_KEYCODE.put("K1", KeyEvent.KEYCODE_HOME);
-		TERMCAP_TO_KEYCODE.put("K3", KeyEvent.KEYCODE_PAGE_UP);
-		TERMCAP_TO_KEYCODE.put("K4", KeyEvent.KEYCODE_MOVE_END);
-		TERMCAP_TO_KEYCODE.put("K5", KeyEvent.KEYCODE_PAGE_DOWN);
-
-		TERMCAP_TO_KEYCODE.put("ku", KEYCODE_DPAD_UP);
-
-		TERMCAP_TO_KEYCODE.put("kB", KEYMOD_SHIFT | KEYCODE_TAB); // termcap=kB, terminfo=kcbt: Back-tab
-		TERMCAP_TO_KEYCODE.put("kD", KEYCODE_FORWARD_DEL); // terminfo=kdch1, delete-character key
-		TERMCAP_TO_KEYCODE.put("kDN", KEYMOD_SHIFT | KEYCODE_DPAD_DOWN); // non-standard shifted arrow down
-		TERMCAP_TO_KEYCODE.put("kF", KEYMOD_SHIFT | KEYCODE_DPAD_DOWN); // terminfo=kind, scroll-forward key
-		TERMCAP_TO_KEYCODE.put("kI", KEYCODE_INSERT);
-		TERMCAP_TO_KEYCODE.put("kN", KEYCODE_PAGE_UP);
-		TERMCAP_TO_KEYCODE.put("kP", KEYCODE_PAGE_DOWN);
-		TERMCAP_TO_KEYCODE.put("kR", KEYMOD_SHIFT | KEYCODE_DPAD_UP); // terminfo=kri, scroll-backward key
-		TERMCAP_TO_KEYCODE.put("kUP", KEYMOD_SHIFT | KEYCODE_DPAD_UP); // non-standard shifted up
-
-		TERMCAP_TO_KEYCODE.put("@7", KEYCODE_MOVE_END);
-		TERMCAP_TO_KEYCODE.put("@8", KEYCODE_NUMPAD_ENTER);
-	}
-
-	static String getCodeFromTermcap(String termcap, boolean cursorKeysApplication, boolean keypadApplication) {
-		Integer keyCodeAndMod = TERMCAP_TO_KEYCODE.get(termcap);
-		if (keyCodeAndMod == null) return null;
-		int keyCode = keyCodeAndMod;
-		int keyMod = 0;
-		if ((keyCode & KEYMOD_SHIFT) != 0) {
-			keyMod |= KEYMOD_SHIFT;
-			keyCode &= ~KEYMOD_SHIFT;
-		}
-		if ((keyCode & KEYMOD_CTRL) != 0) {
-			keyMod |= KEYMOD_CTRL;
-			keyCode &= ~KEYMOD_CTRL;
-		}
-		if ((keyCode & KEYMOD_ALT) != 0) {
-			keyMod |= KEYMOD_ALT;
-			keyCode &= ~KEYMOD_ALT;
-		}
-		return getCode(keyCode, keyMod, cursorKeysApplication, keypadApplication);
-	}
-
-	public static String getCode(int keyCode, int keyMode, boolean cursorApp, boolean keypadApplication) {
-		switch (keyCode) {
-		case KEYCODE_DPAD_CENTER:
-			return "\015";
-
-		case KEYCODE_DPAD_UP:
-			return (keyMode == 0) ? (cursorApp ? "\033OA" : "\033[A") : transformForModifiers("\033[1", keyMode, 'A');
-		case KEYCODE_DPAD_DOWN:
-			return (keyMode == 0) ? (cursorApp ? "\033OB" : "\033[B") : transformForModifiers("\033[1", keyMode, 'B');
-		case KEYCODE_DPAD_RIGHT:
-			return (keyMode == 0) ? (cursorApp ? "\033OC" : "\033[C") : transformForModifiers("\033[1", keyMode, 'C');
-		case KEYCODE_DPAD_LEFT:
-			return (keyMode == 0) ? (cursorApp ? "\033OD" : "\033[D") : transformForModifiers("\033[1", keyMode, 'D');
-
-		case KeyEvent.KEYCODE_HOME:
-			return (keyMode == 0) ? (cursorApp ? "\033OH" : "\033[H") : transformForModifiers("\033[1", keyMode, 'H');
-		case KEYCODE_MOVE_END:
-			return (keyMode == 0) ? (cursorApp ? "\033OF" : "\033[F") : transformForModifiers("\033[1", keyMode, 'F');
-
-			// An xterm can send function keys F1 to F4 in two modes: vt100 compatible or
-			// not. Because Vim may not know what the xterm is sending, both types of keys
-			// are recognized. The same happens for the <Home> and <End> keys.
-			// normal vt100 ~
-			// <F1> t_k1 <Esc>[11~ <xF1> <Esc>OP *<xF1>-xterm*
-			// <F2> t_k2 <Esc>[12~ <xF2> <Esc>OQ *<xF2>-xterm*
-			// <F3> t_k3 <Esc>[13~ <xF3> <Esc>OR *<xF3>-xterm*
-			// <F4> t_k4 <Esc>[14~ <xF4> <Esc>OS *<xF4>-xterm*
-			// <Home> t_kh <Esc>[7~ <xHome> <Esc>OH *<xHome>-xterm*
-			// <End> t_@7 <Esc>[4~ <xEnd> <Esc>OF *<xEnd>-xterm*
-		case KEYCODE_F1:
-			return (keyMode == 0) ? "\033OP" : transformForModifiers("\033[1", keyMode, 'P');
-		case KEYCODE_F2:
-			return (keyMode == 0) ? "\033OQ" : transformForModifiers("\033[1", keyMode, 'Q');
-		case KEYCODE_F3:
-			return (keyMode == 0) ? "\033OR" : transformForModifiers("\033[1", keyMode, 'R');
-		case KEYCODE_F4:
-			return (keyMode == 0) ? "\033OS" : transformForModifiers("\033[1", keyMode, 'S');
-		case KEYCODE_F5:
-			return transformForModifiers("\033[15", keyMode, '~');
-		case KEYCODE_F6:
-			return transformForModifiers("\033[17", keyMode, '~');
-		case KEYCODE_F7:
-			return transformForModifiers("\033[18", keyMode, '~');
-		case KEYCODE_F8:
-			return transformForModifiers("\033[19", keyMode, '~');
-		case KEYCODE_F9:
-			return transformForModifiers("\033[20", keyMode, '~');
-		case KEYCODE_F10:
-			return transformForModifiers("\033[21", keyMode, '~');
-		case KEYCODE_F11:
-			return transformForModifiers("\033[23", keyMode, '~');
-		case KEYCODE_F12:
-			return transformForModifiers("\033[24", keyMode, '~');
-
-		case KEYCODE_SYSRQ:
-			return "\033[32~"; // Sys Request / Print
-			// Is this Scroll lock? case Cancel: return "\033[33~";
-		case KEYCODE_BREAK:
-			return "\033[34~"; // Pause/Break
-
-		case KEYCODE_ESCAPE:
-		case KeyEvent.KEYCODE_BACK:
-			return "\033";
-
-		case KEYCODE_INSERT:
-			return transformForModifiers("\033[2", keyMode, '~');
-		case KEYCODE_FORWARD_DEL:
-			return transformForModifiers("\033[3", keyMode, '~');
-
-		case KEYCODE_NUMPAD_DOT:
-			return keypadApplication ? "\033On" : "\033[3~";
-
-		case KEYCODE_PAGE_UP:
-			return "\033[5~";
-		case KEYCODE_PAGE_DOWN:
-			return "\033[6~";
-		case KEYCODE_DEL:
-			// Yes, this needs to U+007F and not U+0008!
-			return "\u007F";
-		case KEYCODE_NUM_LOCK:
-			return "\033OP";
-
-		case KeyEvent.KEYCODE_SPACE:
-			// If ctrl is not down, return null so that it goes through normal input processing (which may e.g. cause a
-			// combining accent to be written):
-			return ((keyMode & KEYMOD_CTRL) == 0) ? null : "\0";
-		case KEYCODE_TAB:
-			// This is back-tab when shifted:
-			return (keyMode & KEYMOD_SHIFT) == 0 ? "\011" : "\033[Z";
-		case KEYCODE_ENTER:
-			return ((keyMode & KEYMOD_ALT) == 0) ? "\r" : "\033\r";
-
-		case KEYCODE_NUMPAD_ENTER:
-			return keypadApplication ? transformForModifiers("\033O", keyMode, 'M') : "\n";
-		case KEYCODE_NUMPAD_MULTIPLY:
-			return keypadApplication ? transformForModifiers("\033O", keyMode, 'j') : "*";
-		case KEYCODE_NUMPAD_ADD:
-			return keypadApplication ? transformForModifiers("\033O", keyMode, 'k') : "+";
-		case KEYCODE_NUMPAD_COMMA:
-			return ",";
-		case KEYCODE_NUMPAD_SUBTRACT:
-			return keypadApplication ? transformForModifiers("\033O", keyMode, 'm') : "-";
-		case KEYCODE_NUMPAD_DIVIDE:
-			return keypadApplication ? transformForModifiers("\033O", keyMode, 'o') : "/";
-		case KEYCODE_NUMPAD_0:
-			return keypadApplication ? transformForModifiers("\033O", keyMode, 'p') : "1";
-		case KEYCODE_NUMPAD_1:
-			return keypadApplication ? transformForModifiers("\033O", keyMode, 'q') : "1";
-		case KEYCODE_NUMPAD_2:
-			return keypadApplication ? transformForModifiers("\033O", keyMode, 'r') : "2";
-		case KEYCODE_NUMPAD_3:
-			return keypadApplication ? transformForModifiers("\033O", keyMode, 's') : "3";
-		case KEYCODE_NUMPAD_4:
-			return keypadApplication ? transformForModifiers("\033O", keyMode, 't') : "4";
-		case KEYCODE_NUMPAD_5:
-			return keypadApplication ? transformForModifiers("\033O", keyMode, 'u') : "5";
-		case KEYCODE_NUMPAD_6:
-			return keypadApplication ? transformForModifiers("\033O", keyMode, 'v') : "6";
-		case KEYCODE_NUMPAD_7:
-			return keypadApplication ? transformForModifiers("\033O", keyMode, 'w') : "7";
-		case KEYCODE_NUMPAD_8:
-			return keypadApplication ? transformForModifiers("\033O", keyMode, 'x') : "8";
-		case KEYCODE_NUMPAD_9:
-			return keypadApplication ? transformForModifiers("\033O", keyMode, 'y') : "9";
-		case KEYCODE_NUMPAD_EQUALS:
-			return keypadApplication ? transformForModifiers("\033O", keyMode, 'X') : "=";
-		}
-
-		return null;
-	}
-
-	private static String transformForModifiers(String start, int keymod, char lastChar) {
-		int modifier;
-		switch (keymod) {
-		case KEYMOD_SHIFT:
-			modifier = 2;
-			break;
-		case KEYMOD_ALT:
-			modifier = 3;
-			break;
-		case (KEYMOD_SHIFT | KEYMOD_ALT):
-			modifier = 4;
-			break;
-		case KEYMOD_CTRL:
-			modifier = 5;
-			break;
-		case KEYMOD_SHIFT | KEYMOD_CTRL:
-			modifier = 6;
-			break;
-		case KEYMOD_ALT | KEYMOD_CTRL:
-			modifier = 7;
-			break;
-		case KEYMOD_SHIFT | KEYMOD_ALT | KEYMOD_CTRL:
-			modifier = 8;
-			break;
-		default:
-			return start + lastChar;
-		}
-		return start + (";" + modifier) + lastChar;
-	}
-}

app/src/main/java/com/termux/terminal/TerminalBuffer.java

@@ -1,443 +0,0 @@
-package com.termux.terminal;
-
-/**
- * A circular buffer of {@link TerminalRow}:s which keeps notes about what is visible on a logical screen and the scroll
- * history.
- * 
- * See {@link #externalToInternalRow(int)} for how to map from logical screen rows to array indices.
- */
-public final class TerminalBuffer {
-
-	TerminalRow[] mLines;
-	/** The length of {@link #mLines}. */
-	int mTotalRows;
-	/** The number of rows and columns visible on the screen. */
-	int mScreenRows, mColumns;
-	/** The number of rows kept in history. */
-	private int mActiveTranscriptRows = 0;
-	/** The index in the circular buffer where the visible screen starts. */
-	private int mScreenFirstRow = 0;
-
-	/**
-	 * Create a transcript screen.
-	 * 
-	 * @param columns
-	 *            the width of the screen in characters.
-	 * @param totalRows
-	 *            the height of the entire text area, in rows of text.
-	 * @param screenRows
-	 *            the height of just the screen, not including the transcript that holds lines that have scrolled off
-	 *            the top of the screen.
-	 */
-	public TerminalBuffer(int columns, int totalRows, int screenRows) {
-		mColumns = columns;
-		mTotalRows = totalRows;
-		mScreenRows = screenRows;
-		mLines = new TerminalRow[totalRows];
-
-		blockSet(0, 0, columns, screenRows, ' ', TextStyle.NORMAL);
-	}
-
-	public String getTranscriptText() {
-		return getSelectedText(0, -getActiveTranscriptRows(), mColumns, mScreenRows).trim();
-	}
-
-	public String getSelectedText(int selX1, int selY1, int selX2, int selY2) {
-		final StringBuilder builder = new StringBuilder();
-		final int columns = mColumns;
-
-		if (selY1 < -getActiveTranscriptRows()) selY1 = -getActiveTranscriptRows();
-		if (selY2 >= mScreenRows) selY2 = mScreenRows - 1;
-
-		for (int row = selY1; row <= selY2; row++) {
-			int x1 = (row == selY1) ? selX1 : 0;
-			int x2;
-			if (row == selY2) {
-				x2 = selX2 + 1;
-				if (x2 > columns) x2 = columns;
-			} else {
-				x2 = columns;
-			}
-			TerminalRow lineObject = mLines[externalToInternalRow(row)];
-			int x1Index = lineObject.findStartOfColumn(x1);
-			int x2Index = (x2 < mColumns) ? lineObject.findStartOfColumn(x2) : lineObject.getSpaceUsed();
-			if (x2Index == x1Index) {
-				// Selected the start of a wide character.
-				x2Index = lineObject.findStartOfColumn(x2+1);
-			}
-			char[] line = lineObject.mText;
-			int lastPrintingCharIndex = -1;
-			int i;
-			boolean rowLineWrap = getLineWrap(row);
-			if (rowLineWrap && x2 == columns) {
-				// If the line was wrapped, we shouldn't lose trailing space:
-				lastPrintingCharIndex = x2Index - 1;
-			} else {
-				for (i = x1Index; i < x2Index; ++i) {
-					char c = line[i];
-					if (c != ' ') lastPrintingCharIndex = i;
-				}
-			}
-			if (lastPrintingCharIndex != -1) builder.append(line, x1Index, lastPrintingCharIndex - x1Index + 1);
-			if (!rowLineWrap && row < selY2 && row < mScreenRows - 1) builder.append('\n');
-		}
-		return builder.toString();
-	}
-
-	public int getActiveTranscriptRows() {
-		return mActiveTranscriptRows;
-	}
-
-	public int getActiveRows() {
-		return mActiveTranscriptRows + mScreenRows;
-	}
-
-	/**
-	 * Convert a row value from the public external coordinate system to our internal private coordinate system.
-	 * 
-	 * <ul>
-	 * <li>External coordinate system: -mActiveTranscriptRows to mScreenRows-1, with the screen being 0..mScreenRows-1.
-	 * <li>Internal coordinate system: the mScreenRows lines starting at mScreenFirstRow comprise the screen, while the
-	 * mActiveTranscriptRows lines ending at mScreenFirstRow-1 form the transcript (as a circular buffer).
-	 * </ul>
-	 *
-	 * External <---> Internal:
-	 * 
-	 * <pre>
-	 * [ ...                            ]           [ ...                                     ]
-	 * [ -mActiveTranscriptRows         ]           [ mScreenFirstRow - mActiveTranscriptRows ]
-	 * [ ...                            ]           [ ...                                     ]
-	 * [ 0 (visible screen starts here) ]  <----->  [ mScreenFirstRow                         ]
-	 * [ ...                            ]           [ ...                                     ]
-	 * [ mScreenRows-1                  ]           [ mScreenFirstRow + mScreenRows-1         ]
-	 * </pre>
-	 * 
-	 * @param externalRow
-	 *            a row in the external coordinate system.
-	 * @return The row corresponding to the input argument in the private coordinate system.
-	 */
-	public int externalToInternalRow(int externalRow) {
-		if (externalRow < -mActiveTranscriptRows || externalRow > mScreenRows)
-			throw new IllegalArgumentException("extRow=" + externalRow + ", mScreenRows=" + mScreenRows + ", mActiveTranscriptRows=" + mActiveTranscriptRows);
-		final int internalRow = mScreenFirstRow + externalRow;
-		return (internalRow < 0) ? (mTotalRows + internalRow) : (internalRow % mTotalRows);
-	}
-
-	public void setLineWrap(int row) {
-		mLines[externalToInternalRow(row)].mLineWrap = true;
-	}
-
-	public boolean getLineWrap(int row) {
-		return mLines[externalToInternalRow(row)].mLineWrap;
-	}
-
-    public void clearLineWrap(int row) {
-        mLines[externalToInternalRow(row)].mLineWrap = false;
-    }
-
-	/**
-	 * Resize the screen which this transcript backs. Currently, this only works if the number of columns does not
-	 * change or the rows expand (that is, it only works when shrinking the number of rows).
-	 * 
-	 * @param newColumns
-	 *            The number of columns the screen should have.
-	 * @param newRows
-	 *            The number of rows the screen should have.
-	 * @param cursor
-	 *            An int[2] containing the (column, row) cursor location.
-	 */
-	public void resize(int newColumns, int newRows, int newTotalRows, int[] cursor, int currentStyle, boolean altScreen) {
-		// newRows > mTotalRows should not normally happen since mTotalRows is TRANSCRIPT_ROWS (10000):
-		if (newColumns == mColumns && newRows <= mTotalRows) {
-			// Fast resize where just the rows changed.
-			int shiftDownOfTopRow = mScreenRows - newRows;
-			if (shiftDownOfTopRow > 0 && shiftDownOfTopRow < mScreenRows) {
-				// Shrinking. Check if we can skip blank rows at bottom below cursor.
-				for (int i = mScreenRows - 1; i > 0; i--) {
-					if (cursor[1] >= i) break;
-					int r = externalToInternalRow(i);
-					if (mLines[r] == null || mLines[r].isBlank()) {
-						if (--shiftDownOfTopRow == 0) break;
-					}
-				}
-			} else if (shiftDownOfTopRow < 0) {
-				// Negative shift down = expanding. Only move screen up if there is transcript to show:
-				int actualShift = Math.max(shiftDownOfTopRow, -mActiveTranscriptRows);
-				if (shiftDownOfTopRow != actualShift) {
-					// The new lines revealed by the resizing are not all from the transcript. Blank the below ones.
-					for (int i = 0; i < actualShift - shiftDownOfTopRow; i++)
-						allocateFullLineIfNecessary((mScreenFirstRow + mScreenRows + i) % mTotalRows).clear(currentStyle);
-					shiftDownOfTopRow = actualShift;
-				}
-			}
-			mScreenFirstRow += shiftDownOfTopRow;
-			mScreenFirstRow = (mScreenFirstRow < 0) ? (mScreenFirstRow + mTotalRows) : (mScreenFirstRow % mTotalRows);
-			mTotalRows = newTotalRows;
-			mActiveTranscriptRows = altScreen ? 0 : Math.max(0, mActiveTranscriptRows + shiftDownOfTopRow);
-			cursor[1] -= shiftDownOfTopRow;
-			mScreenRows = newRows;
-		} else {
-			// Copy away old state and update new:
-			TerminalRow[] oldLines = mLines;
-			mLines = new TerminalRow[newTotalRows];
-			for (int i = 0; i < newTotalRows; i++)
-				mLines[i] = new TerminalRow(newColumns, currentStyle);
-
-			final int oldActiveTranscriptRows = mActiveTranscriptRows;
-			final int oldScreenFirstRow = mScreenFirstRow;
-			final int oldScreenRows = mScreenRows;
-			final int oldTotalRows = mTotalRows;
-			mTotalRows = newTotalRows;
-			mScreenRows = newRows;
-			mActiveTranscriptRows = mScreenFirstRow = 0;
-			mColumns = newColumns;
-
-			int newCursorRow = -1;
-			int newCursorColumn = -1;
-			int oldCursorRow = cursor[1];
-			int oldCursorColumn = cursor[0];
-			boolean newCursorPlaced = false;
-
-			int currentOutputExternalRow = 0;
-			int currentOutputExternalColumn = 0;
-
-			// Loop over every character in the initial state.
-			// Blank lines should be skipped only if at end of transcript (just as is done in the "fast" resize), so we
-			// keep track how many blank lines we have skipped if we later on find a non-blank line.
-			int skippedBlankLines = 0;
-			for (int externalOldRow = -oldActiveTranscriptRows; externalOldRow < oldScreenRows; externalOldRow++) {
-				// Do what externalToInternalRow() does but for the old state:
-				int internalOldRow = oldScreenFirstRow + externalOldRow;
-				internalOldRow = (internalOldRow < 0) ? (oldTotalRows + internalOldRow) : (internalOldRow % oldTotalRows);
-
-				TerminalRow oldLine = oldLines[internalOldRow];
-				boolean cursorAtThisRow = externalOldRow == oldCursorRow;
-				// The cursor may only be on a non-null line, which we should not skip:
-				if (oldLine == null || (!(!newCursorPlaced && cursorAtThisRow)) && oldLine.isBlank()) {
-					skippedBlankLines++;
-					continue;
-				} else if (skippedBlankLines > 0) {
-					// After skipping some blank lines we encounter a non-blank line. Insert the skipped blank lines.
-					for (int i = 0; i < skippedBlankLines; i++) {
-						if (currentOutputExternalRow == mScreenRows - 1) {
-							scrollDownOneLine(0, mScreenRows, currentStyle);
-						} else {
-							currentOutputExternalRow++;
-						}
-						currentOutputExternalColumn = 0;
-					}
-					skippedBlankLines = 0;
-				}
-
-				int lastNonSpaceIndex = 0;
-				boolean justToCursor = false;
-				if (cursorAtThisRow || oldLine.mLineWrap) {
-					// Take the whole line, either because of cursor on it, or if line wrapping.
-					lastNonSpaceIndex = oldLine.getSpaceUsed();
-					if (cursorAtThisRow) justToCursor = true;
-				} else {
-					for (int i = 0; i < oldLine.getSpaceUsed(); i++)
-						// NEWLY INTRODUCED BUG! Should not index oldLine.mStyle with char indices
-						if (oldLine.mText[i] != ' '/* || oldLine.mStyle[i] != currentStyle */) lastNonSpaceIndex = i + 1;
-				}
-
-				int currentOldCol = 0;
-				int styleAtCol = 0;
-				for (int i = 0; i < lastNonSpaceIndex; i++) {
-					// Note that looping over java character, not cells.
-					char c = oldLine.mText[i];
-					int codePoint = (Character.isHighSurrogate(c)) ? Character.toCodePoint(c, oldLine.mText[++i]) : c;
-					int displayWidth = WcWidth.width(codePoint);
-					// Use the last style if this is a zero-width character:
-					if (displayWidth > 0) styleAtCol = oldLine.getStyle(currentOldCol);
-
-					// Line wrap as necessary:
-					if (currentOutputExternalColumn + displayWidth > mColumns) {
-						setLineWrap(currentOutputExternalRow);
-						if (currentOutputExternalRow == mScreenRows - 1) {
-							if (newCursorPlaced) newCursorRow--;
-							scrollDownOneLine(0, mScreenRows, currentStyle);
-						} else {
-							currentOutputExternalRow++;
-						}
-						currentOutputExternalColumn = 0;
-					}
-
-					int offsetDueToCombiningChar = ((displayWidth <= 0 && currentOutputExternalColumn > 0) ? 1 : 0);
-					int outputColumn = currentOutputExternalColumn - offsetDueToCombiningChar;
-					setChar(outputColumn, currentOutputExternalRow, codePoint, styleAtCol);
-
-					if (displayWidth > 0) {
-						if (oldCursorRow == externalOldRow && oldCursorColumn == currentOldCol) {
-							newCursorColumn = currentOutputExternalColumn;
-							newCursorRow = currentOutputExternalRow;
-							newCursorPlaced = true;
-						}
-						currentOldCol += displayWidth;
-						currentOutputExternalColumn += displayWidth;
-						if (justToCursor && newCursorPlaced) break;
-					}
-				}
-				// Old row has been copied. Check if we need to insert newline if old line was not wrapping:
-				if (externalOldRow != (oldScreenRows - 1) && !oldLine.mLineWrap) {
-					if (currentOutputExternalRow == mScreenRows - 1) {
-						if (newCursorPlaced) newCursorRow--;
-						scrollDownOneLine(0, mScreenRows, currentStyle);
-					} else {
-						currentOutputExternalRow++;
-					}
-					currentOutputExternalColumn = 0;
-				}
-			}
-
-			cursor[0] = newCursorColumn;
-			cursor[1] = newCursorRow;
-		}
-
-		// Handle cursor scrolling off screen:
-		if (cursor[0] < 0 || cursor[1] < 0) cursor[0] = cursor[1] = 0;
-	}
-
-	/**
-	 * Block copy lines and associated metadata from one location to another in the circular buffer, taking wraparound
-	 * into account.
-	 * 
-	 * @param srcInternal
-	 *            The first line to be copied.
-	 * @param len
-	 *            The number of lines to be copied.
-	 */
-	private void blockCopyLinesDown(int srcInternal, int len) {
-		if (len == 0) return;
-		int totalRows = mTotalRows;
-
-		int start = len - 1;
-		// Save away line to be overwritten:
-		TerminalRow lineToBeOverWritten = mLines[(srcInternal + start + 1) % totalRows];
-		// Do the copy from bottom to top.
-		for (int i = start; i >= 0; --i)
-			mLines[(srcInternal + i + 1) % totalRows] = mLines[(srcInternal + i) % totalRows];
-		// Put back overwritten line, now above the block:
-		mLines[(srcInternal) % totalRows] = lineToBeOverWritten;
-	}
-
-	/**
-	 * Scroll the screen down one line. To scroll the whole screen of a 24 line screen, the arguments would be (0, 24).
-	 * 
-	 * @param topMargin
-	 *            First line that is scrolled.
-	 * @param bottomMargin
-	 *            One line after the last line that is scrolled.
-	 * @param style
-	 *            the style for the newly exposed line.
-	 */
-	public void scrollDownOneLine(int topMargin, int bottomMargin, int style) {
-		if (topMargin > bottomMargin - 1 || topMargin < 0 || bottomMargin > mScreenRows)
-			throw new IllegalArgumentException("topMargin=" + topMargin + ", bottomMargin=" + bottomMargin + ", mScreenRows=" + mScreenRows);
-
-		// Copy the fixed topMargin lines one line down so that they remain on screen in same position:
-		blockCopyLinesDown(mScreenFirstRow, topMargin);
-		// Copy the fixed mScreenRows-bottomMargin lines one line down so that they remain on screen in same
-		// position:
-		blockCopyLinesDown(externalToInternalRow(bottomMargin), mScreenRows - bottomMargin);
-
-		// Update the screen location in the ring buffer:
-		mScreenFirstRow = (mScreenFirstRow + 1) % mTotalRows;
-		// Note that the history has grown if not already full:
-		if (mActiveTranscriptRows < mTotalRows - mScreenRows) mActiveTranscriptRows++;
-
-		// Blank the newly revealed line above the bottom margin:
-		int blankRow = externalToInternalRow(bottomMargin - 1);
-		if (mLines[blankRow] == null) {
-			mLines[blankRow] = new TerminalRow(mColumns, style);
-		} else {
-			mLines[blankRow].clear(style);
-		}
-	}
-
-	/**
-	 * Block copy characters from one position in the screen to another. The two positions can overlap. All characters
-	 * of the source and destination must be within the bounds of the screen, or else an InvalidParameterException will
-	 * be thrown.
-	 * 
-	 * @param sx
-	 *            source X coordinate
-	 * @param sy
-	 *            source Y coordinate
-	 * @param w
-	 *            width
-	 * @param h
-	 *            height
-	 * @param dx
-	 *            destination X coordinate
-	 * @param dy
-	 *            destination Y coordinate
-	 */
-	public void blockCopy(int sx, int sy, int w, int h, int dx, int dy) {
-		if (w == 0) return;
-		if (sx < 0 || sx + w > mColumns || sy < 0 || sy + h > mScreenRows || dx < 0 || dx + w > mColumns || dy < 0 || dy + h > mScreenRows)
-			throw new IllegalArgumentException();
-		boolean copyingUp = sy > dy;
-		for (int y = 0; y < h; y++) {
-			int y2 = copyingUp ? y : (h - (y + 1));
-			TerminalRow sourceRow = allocateFullLineIfNecessary(externalToInternalRow(sy + y2));
-			allocateFullLineIfNecessary(externalToInternalRow(dy + y2)).copyInterval(sourceRow, sx, sx + w, dx);
-		}
-	}
-
-	/**
-	 * Block set characters. All characters must be within the bounds of the screen, or else and
-	 * InvalidParemeterException will be thrown. Typically this is called with a "val" argument of 32 to clear a block
-	 * of characters.
-	 */
-	public void blockSet(int sx, int sy, int w, int h, int val, int style) {
-		if (sx < 0 || sx + w > mColumns || sy < 0 || sy + h > mScreenRows) {
-			throw new IllegalArgumentException(
-					"Illegal arguments! blockSet(" + sx + ", " + sy + ", " + w + ", " + h + ", " + val + ", " + mColumns + ", " + mScreenRows + ")");
-		}
-		for (int y = 0; y < h; y++)
-			for (int x = 0; x < w; x++)
-				setChar(sx + x, sy + y, val, style);
-	}
-
-	public TerminalRow allocateFullLineIfNecessary(int row) {
-		return (mLines[row] == null) ? (mLines[row] = new TerminalRow(mColumns, 0)) : mLines[row];
-	}
-
-	public void setChar(int column, int row, int codePoint, int style) {
-		if (row >= mScreenRows || column >= mColumns)
-			throw new IllegalArgumentException("row=" + row + ", column=" + column + ", mScreenRows=" + mScreenRows + ", mColumns=" + mColumns);
-		row = externalToInternalRow(row);
-		allocateFullLineIfNecessary(row).setChar(column, codePoint, style);
-	}
-
-	public int getStyleAt(int externalRow, int column) {
-		return allocateFullLineIfNecessary(externalToInternalRow(externalRow)).getStyle(column);
-	}
-
-	/** Support for http://vt100.net/docs/vt510-rm/DECCARA and http://vt100.net/docs/vt510-rm/DECCARA */
-	public void setOrClearEffect(int bits, boolean setOrClear, boolean reverse, boolean rectangular, int leftMargin, int rightMargin, int top, int left,
-			int bottom, int right) {
-		for (int y = top; y < bottom; y++) {
-			TerminalRow line = mLines[externalToInternalRow(y)];
-			int startOfLine = (rectangular || y == top) ? left : leftMargin;
-			int endOfLine = (rectangular || y + 1 == bottom) ? right : rightMargin;
-			for (int x = startOfLine; x < endOfLine; x++) {
-				int currentStyle = line.getStyle(x);
-				int foreColor = TextStyle.decodeForeColor(currentStyle);
-				int backColor = TextStyle.decodeBackColor(currentStyle);
-				int effect = TextStyle.decodeEffect(currentStyle);
-				if (reverse) {
-					// Clear out the bits to reverse and add them back in reversed:
-					effect = (effect & ~bits) | (bits & ~effect);
-				} else if (setOrClear) {
-					effect |= bits;
-				} else {
-					effect &= ~bits;
-				}
-				line.mStyle[x] = TextStyle.encode(foreColor, backColor, effect);
-			}
-		}
-	}
-
-}

app/src/main/java/com/termux/terminal/TerminalColorScheme.java

@@ -1,102 +0,0 @@
-package com.termux.terminal;
-
-import java.util.Map;
-import java.util.Properties;
-
-/**
- * Color scheme for a terminal with default colors, which may be overridden (and then reset) from the shell using
- * Operating System Control (OSC) sequences.
- * 
- * @see TerminalColors
- */
-public final class TerminalColorScheme {
-
-	/** http://upload.wikimedia.org/wikipedia/en/1/15/Xterm_256color_chart.svg, but with blue color brighter. */
-	private static final int[] DEFAULT_COLORSCHEME = {
-			// 16 original colors. First 8 are dim.
-			0xff000000, // black
-			0xffcd0000, // dim red
-			0xff00cd00, // dim green
-			0xffcdcd00, // dim yellow
-			0xff6495ed, // dim blue
-			0xffcd00cd, // dim magenta
-			0xff00cdcd, // dim cyan
-			0xffe5e5e5, // dim white
-			// Second 8 are bright:
-			0xff7f7f7f, // medium grey
-			0xffff0000, // bright red
-			0xff00ff00, // bright green
-			0xffffff00, // bright yellow
-			0xff5c5cff, // light blue
-			0xffff00ff, // bright magenta
-			0xff00ffff, // bright cyan
-			0xffffffff, // bright white
-
-			// 216 color cube, six shades of each color:
-			0xff000000, 0xff00005f, 0xff000087, 0xff0000af, 0xff0000d7, 0xff0000ff, 0xff005f00, 0xff005f5f, 0xff005f87, 0xff005faf, 0xff005fd7, 0xff005fff,
-			0xff008700, 0xff00875f, 0xff008787, 0xff0087af, 0xff0087d7, 0xff0087ff, 0xff00af00, 0xff00af5f, 0xff00af87, 0xff00afaf, 0xff00afd7, 0xff00afff,
-			0xff00d700, 0xff00d75f, 0xff00d787, 0xff00d7af, 0xff00d7d7, 0xff00d7ff, 0xff00ff00, 0xff00ff5f, 0xff00ff87, 0xff00ffaf, 0xff00ffd7, 0xff00ffff,
-			0xff5f0000, 0xff5f005f, 0xff5f0087, 0xff5f00af, 0xff5f00d7, 0xff5f00ff, 0xff5f5f00, 0xff5f5f5f, 0xff5f5f87, 0xff5f5faf, 0xff5f5fd7, 0xff5f5fff,
-			0xff5f8700, 0xff5f875f, 0xff5f8787, 0xff5f87af, 0xff5f87d7, 0xff5f87ff, 0xff5faf00, 0xff5faf5f, 0xff5faf87, 0xff5fafaf, 0xff5fafd7, 0xff5fafff,
-			0xff5fd700, 0xff5fd75f, 0xff5fd787, 0xff5fd7af, 0xff5fd7d7, 0xff5fd7ff, 0xff5fff00, 0xff5fff5f, 0xff5fff87, 0xff5fffaf, 0xff5fffd7, 0xff5fffff,
-			0xff870000, 0xff87005f, 0xff870087, 0xff8700af, 0xff8700d7, 0xff8700ff, 0xff875f00, 0xff875f5f, 0xff875f87, 0xff875faf, 0xff875fd7, 0xff875fff,
-			0xff878700, 0xff87875f, 0xff878787, 0xff8787af, 0xff8787d7, 0xff8787ff, 0xff87af00, 0xff87af5f, 0xff87af87, 0xff87afaf, 0xff87afd7, 0xff87afff,
-			0xff87d700, 0xff87d75f, 0xff87d787, 0xff87d7af, 0xff87d7d7, 0xff87d7ff, 0xff87ff00, 0xff87ff5f, 0xff87ff87, 0xff87ffaf, 0xff87ffd7, 0xff87ffff,
-			0xffaf0000, 0xffaf005f, 0xffaf0087, 0xffaf00af, 0xffaf00d7, 0xffaf00ff, 0xffaf5f00, 0xffaf5f5f, 0xffaf5f87, 0xffaf5faf, 0xffaf5fd7, 0xffaf5fff,
-			0xffaf8700, 0xffaf875f, 0xffaf8787, 0xffaf87af, 0xffaf87d7, 0xffaf87ff, 0xffafaf00, 0xffafaf5f, 0xffafaf87, 0xffafafaf, 0xffafafd7, 0xffafafff,
-			0xffafd700, 0xffafd75f, 0xffafd787, 0xffafd7af, 0xffafd7d7, 0xffafd7ff, 0xffafff00, 0xffafff5f, 0xffafff87, 0xffafffaf, 0xffafffd7, 0xffafffff,
-			0xffd70000, 0xffd7005f, 0xffd70087, 0xffd700af, 0xffd700d7, 0xffd700ff, 0xffd75f00, 0xffd75f5f, 0xffd75f87, 0xffd75faf, 0xffd75fd7, 0xffd75fff,
-			0xffd78700, 0xffd7875f, 0xffd78787, 0xffd787af, 0xffd787d7, 0xffd787ff, 0xffd7af00, 0xffd7af5f, 0xffd7af87, 0xffd7afaf, 0xffd7afd7, 0xffd7afff,
-			0xffd7d700, 0xffd7d75f, 0xffd7d787, 0xffd7d7af, 0xffd7d7d7, 0xffd7d7ff, 0xffd7ff00, 0xffd7ff5f, 0xffd7ff87, 0xffd7ffaf, 0xffd7ffd7, 0xffd7ffff,
-			0xffff0000, 0xffff005f, 0xffff0087, 0xffff00af, 0xffff00d7, 0xffff00ff, 0xffff5f00, 0xffff5f5f, 0xffff5f87, 0xffff5faf, 0xffff5fd7, 0xffff5fff,
-			0xffff8700, 0xffff875f, 0xffff8787, 0xffff87af, 0xffff87d7, 0xffff87ff, 0xffffaf00, 0xffffaf5f, 0xffffaf87, 0xffffafaf, 0xffffafd7, 0xffffafff,
-			0xffffd700, 0xffffd75f, 0xffffd787, 0xffffd7af, 0xffffd7d7, 0xffffd7ff, 0xffffff00, 0xffffff5f, 0xffffff87, 0xffffffaf, 0xffffffd7, 0xffffffff,
-
-			// 24 grey scale ramp:
-			0xff080808, 0xff121212, 0xff1c1c1c, 0xff262626, 0xff303030, 0xff3a3a3a, 0xff444444, 0xff4e4e4e, 0xff585858, 0xff626262, 0xff6c6c6c, 0xff767676,
-			0xff808080, 0xff8a8a8a, 0xff949494, 0xff9e9e9e, 0xffa8a8a8, 0xffb2b2b2, 0xffbcbcbc, 0xffc6c6c6, 0xffd0d0d0, 0xffdadada, 0xffe4e4e4, 0xffeeeeee,
-
-			// COLOR_INDEX_DEFAULT_FOREGROUND, COLOR_INDEX_DEFAULT_BACKGROUND and COLOR_INDEX_DEFAULT_CURSOR:
-			0xffffffff, 0xff000000, 0xffffffff };
-
-	public final int[] mDefaultColors = new int[TextStyle.NUM_INDEXED_COLORS];
-
-	public TerminalColorScheme() {
-		reset();
-	}
-
-	public void reset() {
-		System.arraycopy(DEFAULT_COLORSCHEME, 0, mDefaultColors, 0, TextStyle.NUM_INDEXED_COLORS);
-	}
-
-	public void updateWith(Properties props) {
-		reset();
-		for (Map.Entry<Object, Object> entries : props.entrySet()) {
-			String key = (String) entries.getKey();
-			String value = (String) entries.getValue();
-			int colorIndex;
-
-			if (key.equals("foreground")) {
-				colorIndex = TextStyle.COLOR_INDEX_FOREGROUND;
-			} else if (key.equals("background")) {
-				colorIndex = TextStyle.COLOR_INDEX_BACKGROUND;
-			} else if (key.equals("cursor")) {
-				colorIndex = TextStyle.COLOR_INDEX_CURSOR;
-			} else if (key.startsWith("color")) {
-				try {
-					colorIndex = Integer.parseInt(key.substring(5));
-				} catch (NumberFormatException e) {
-					throw new IllegalArgumentException("Invalid property: '" + key + "'");
-				}
-			} else {
-				throw new IllegalArgumentException("Invalid property: '" + key + "'");
-			}
-
-			int colorValue = TerminalColors.parse(value);
-			if (colorValue == 0) throw new IllegalArgumentException("Property '" + key + "' has invalid color: '" + value + "'");
-
-			mDefaultColors[colorIndex] = colorValue;
-		}
-	}
-
-}

app/src/main/java/com/termux/terminal/TerminalColors.java

@@ -1,76 +0,0 @@
-package com.termux.terminal;
-
-/** Current terminal colors (if different from default). */
-public final class TerminalColors {
-
-	/** Static data - a bit ugly but ok for now. */
-	public static final TerminalColorScheme COLOR_SCHEME = new TerminalColorScheme();
-
-	/**
-	 * The current terminal colors, which are normally set from the color theme, but may be set dynamically with the OSC
-	 * 4 control sequence.
-	 */
-	public final int[] mCurrentColors = new int[TextStyle.NUM_INDEXED_COLORS];
-
-	/** Create a new instance with default colors from the theme. */
-	public TerminalColors() {
-		reset();
-	}
-
-	/** Reset a particular indexed color with the default color from the color theme. */
-	public void reset(int index) {
-		mCurrentColors[index] = COLOR_SCHEME.mDefaultColors[index];
-	}
-
-	/** Reset all indexed colors with the default color from the color theme. */
-	public void reset() {
-		System.arraycopy(COLOR_SCHEME.mDefaultColors, 0, mCurrentColors, 0, TextStyle.NUM_INDEXED_COLORS);
-	}
-
-	/**
-	 * Parse color according to http://manpages.ubuntu.com/manpages/intrepid/man3/XQueryColor.3.html
-	 * 
-	 * Highest bit is set if successful, so return value is 0xFF${R}${G}${B}. Return 0 if failed.
-	 */
-	static int parse(String c) {
-		try {
-			int skipInitial, skipBetween;
-			if (c.charAt(0) == '#') {
-				// #RGB, #RRGGBB, #RRRGGGBBB or #RRRRGGGGBBBB. Most significant bits.
-				skipInitial = 1;
-				skipBetween = 0;
-			} else if (c.startsWith("rgb:")) {
-				// rgb:<red>/<green>/<blue> where <red>, <green>, <blue> := h | hh | hhh | hhhh. Scaled.
-				skipInitial = 4;
-				skipBetween = 1;
-			} else {
-				return 0;
-			}
-			int charsForColors = c.length() - skipInitial - 2 * skipBetween;
-			if (charsForColors % 3 != 0) return 0; // Unequal lengths.
-			int componentLength = charsForColors / 3;
-			double mult = 255 / (Math.pow(2, componentLength * 4) - 1);
-
-			int currentPosition = skipInitial;
-			String rString = c.substring(currentPosition, currentPosition + componentLength);
-			currentPosition += componentLength + skipBetween;
-			String gString = c.substring(currentPosition, currentPosition + componentLength);
-			currentPosition += componentLength + skipBetween;
-			String bString = c.substring(currentPosition, currentPosition + componentLength);
-
-			int r = (int) (Integer.parseInt(rString, 16) * mult);
-			int g = (int) (Integer.parseInt(gString, 16) * mult);
-			int b = (int) (Integer.parseInt(bString, 16) * mult);
-			return 0xFF << 24 | r << 16 | g << 8 | b;
-		} catch (NumberFormatException | IndexOutOfBoundsException e) {
-			return 0;
-		}
-	}
-
-	/** Try parse a color from a text parameter and into a specified index. */
-	public void tryParseColor(int intoIndex, String textParameter) {
-		int c = parse(textParameter);
-		if (c != 0) mCurrentColors[intoIndex] = c;
-	}
-
-}

app/src/main/java/com/termux/terminal/TerminalOutput.java

@@ -1,26 +0,0 @@
-package com.termux.terminal;
-
-import java.nio.charset.StandardCharsets;
-
-/** A client which receives callbacks from events triggered by feeding input to a {@link TerminalEmulator}. */
-public abstract class TerminalOutput {
-
-	/** Write a string using the UTF-8 encoding to the terminal client. */
-	public final void write(String data) {
-		byte[] bytes = data.getBytes(StandardCharsets.UTF_8);
-		write(bytes, 0, bytes.length);
-	}
-
-	/** Write bytes to the terminal client. */
-	public abstract void write(byte[] data, int offset, int count);
-
-	/** Notify the terminal client that the terminal title has changed. */
-	public abstract void titleChanged(String oldTitle, String newTitle);
-
-	/** Notify the terminal client that the terminal title has changed. */
-	public abstract void clipboardText(String text);
-
-	/** Notify the terminal client that a bell character (ASCII 7, bell, BEL, \a, ^G)) has been received. */
-	public abstract void onBell();
-
-}

app/src/main/java/com/termux/terminal/TerminalRow.java

@@ -1,232 +0,0 @@
-package com.termux.terminal;
-
-import java.util.Arrays;
-
-/**
- * A row in a terminal, composed of a fixed number of cells.
- * 
- * The text in the row is stored in a char[] array, {@link #mText}, for quick access during rendering.
- */
-public final class TerminalRow {
-
-	private static final float SPARE_CAPACITY_FACTOR = 1.5f;
-
-	/** The number of columns in this terminal row. */
-	private final int mColumns;
-	/** The text filling this terminal row. */
-	public char[] mText;
-	/** The number of java char:s used in {@link #mText}. */
-	private short mSpaceUsed;
-	/** If this row has been line wrapped due to text output at the end of line. */
-	boolean mLineWrap;
-	/** The style bits of each cell in the row. See {@link TextStyle}. */
-	final int[] mStyle;
-
-	/** Construct a blank row (containing only whitespace, ' ') with a specified style. */
-	public TerminalRow(int columns, int style) {
-		mColumns = columns;
-		mText = new char[(int) (SPARE_CAPACITY_FACTOR * columns)];
-		mStyle = new int[columns];
-		clear(style);
-	}
-
-	/** NOTE: The sourceX2 is exclusive. */
-	public void copyInterval(TerminalRow line, int sourceX1, int sourceX2, int destinationX) {
-		final int x1 = line.findStartOfColumn(sourceX1);
-		final int x2 = line.findStartOfColumn(sourceX2);
-		boolean startingFromSecondHalfOfWideChar = (sourceX1 > 0 && line.wideDisplayCharacterStartingAt(sourceX1 - 1));
-		final char[] sourceChars = (this == line) ? Arrays.copyOf(line.mText, line.mText.length) : line.mText;
-		int latestNonCombiningWidth = 0;
-		for (int i = x1; i < x2; i++) {
-			char sourceChar = sourceChars[i];
-			int codePoint = Character.isHighSurrogate(sourceChar) ? Character.toCodePoint(sourceChar, sourceChars[++i]) : sourceChar;
-			if (startingFromSecondHalfOfWideChar) {
-				// Just treat copying second half of wide char as copying whitespace.
-				codePoint = ' ';
-				startingFromSecondHalfOfWideChar = false;
-			}
-			int w = WcWidth.width(codePoint);
-			if (w > 0) {
-				destinationX += latestNonCombiningWidth;
-				sourceX1 += latestNonCombiningWidth;
-				latestNonCombiningWidth = w;
-			}
-			setChar(destinationX, codePoint, line.getStyle(sourceX1));
-		}
-	}
-
-	public int getSpaceUsed() {
-		return mSpaceUsed;
-	}
-
-	/** Note that the column may end of second half of wide character. */
-	public int findStartOfColumn(int column) {
-		if (column == mColumns) return getSpaceUsed();
-
-		int currentColumn = 0;
-		int currentCharIndex = 0;
-		while (true) { // 0<2 1 < 2
-			int newCharIndex = currentCharIndex;
-			char c = mText[newCharIndex++]; // cci=1, cci=2
-			boolean isHigh = Character.isHighSurrogate(c);
-			int codePoint = isHigh ? Character.toCodePoint(c, mText[newCharIndex++]) : c;
-			int wcwidth = WcWidth.width(codePoint); // 1, 2
-			if (wcwidth > 0) {
-				currentColumn += wcwidth;
-				if (currentColumn == column) {
-					while (newCharIndex < mSpaceUsed) {
-						// Skip combining chars.
-						if (Character.isHighSurrogate(mText[newCharIndex])) {
-							if (WcWidth.width(Character.toCodePoint(mText[newCharIndex], mText[newCharIndex + 1])) <= 0) {
-								newCharIndex += 2;
-							} else {
-								break;
-							}
-						} else if (WcWidth.width(mText[newCharIndex]) <= 0) {
-							newCharIndex++;
-						} else {
-							break;
-						}
-					}
-					return newCharIndex;
-				} else if (currentColumn > column) {
-					// Wide column going past end.
-					return currentCharIndex;
-				}
-			}
-			currentCharIndex = newCharIndex;
-		}
-	}
-
-	private boolean wideDisplayCharacterStartingAt(int column) {
-		for (int currentCharIndex = 0, currentColumn = 0; currentCharIndex < mSpaceUsed;) {
-			char c = mText[currentCharIndex++];
-			int codePoint = Character.isHighSurrogate(c) ? Character.toCodePoint(c, mText[currentCharIndex++]) : c;
-			int wcwidth = WcWidth.width(codePoint);
-			if (wcwidth > 0) {
-				if (currentColumn == column && wcwidth == 2) return true;
-				currentColumn += wcwidth;
-				if (currentColumn > column) return false;
-			}
-		}
-		return false;
-	}
-
-	public void clear(int style) {
-		Arrays.fill(mText, ' ');
-		Arrays.fill(mStyle, style);
-		mSpaceUsed = (short) mColumns;
-	}
-
-	// https://github.com/steven676/Android-Terminal-Emulator/commit/9a47042620bec87617f0b4f5d50568535668fe26
-	public void setChar(int columnToSet, int codePoint, int style) {
-		mStyle[columnToSet] = style;
-
-		final int newCodePointDisplayWidth = WcWidth.width(codePoint);
-		final boolean newIsCombining = newCodePointDisplayWidth <= 0;
-
-		boolean wasExtraColForWideChar = (columnToSet > 0) && wideDisplayCharacterStartingAt(columnToSet - 1);
-
-		if (newIsCombining) {
-			// When standing at second half of wide character and inserting combining:
-			if (wasExtraColForWideChar) columnToSet--;
-		} else {
-			// Check if we are overwriting the second half of a wide character starting at the previous column:
-			if (wasExtraColForWideChar) setChar(columnToSet - 1, ' ', style);
-			// Check if we are overwriting the first half of a wide character starting at the next column:
-			boolean overwritingWideCharInNextColumn = newCodePointDisplayWidth == 2 && wideDisplayCharacterStartingAt(columnToSet + 1);
-			if (overwritingWideCharInNextColumn) setChar(columnToSet + 1, ' ', style);
-		}
-
-		char[] text = mText;
-		final int oldStartOfColumnIndex = findStartOfColumn(columnToSet);
-		final int oldCodePointDisplayWidth = WcWidth.width(text, oldStartOfColumnIndex);
-
-		// Get the number of elements in the mText array this column uses now
-		int oldCharactersUsedForColumn;
-		if (columnToSet + oldCodePointDisplayWidth < mColumns) {
-			oldCharactersUsedForColumn = findStartOfColumn(columnToSet + oldCodePointDisplayWidth) - oldStartOfColumnIndex;
-		} else {
-			// Last character.
-			oldCharactersUsedForColumn = mSpaceUsed - oldStartOfColumnIndex;
-		}
-
-		// Find how many chars this column will need
-		int newCharactersUsedForColumn = Character.charCount(codePoint);
-		if (newIsCombining) {
-			// Combining characters are added to the contents of the column instead of overwriting them, so that they
-			// modify the existing contents.
-			// FIXME: Put a limit of combining characters.
-			// FIXME: Unassigned characters also get width=0.
-			newCharactersUsedForColumn += oldCharactersUsedForColumn;
-		}
-
-		int oldNextColumnIndex = oldStartOfColumnIndex + oldCharactersUsedForColumn;
-		int newNextColumnIndex = oldStartOfColumnIndex + newCharactersUsedForColumn;
-
-		final int javaCharDifference = newCharactersUsedForColumn - oldCharactersUsedForColumn;
-		if (javaCharDifference > 0) {
-			// Shift the rest of the line right.
-			int oldCharactersAfterColumn = mSpaceUsed - oldNextColumnIndex;
-			if (mSpaceUsed + javaCharDifference > text.length) {
-				// We need to grow the array
-				char[] newText = new char[text.length + mColumns];
-				System.arraycopy(text, 0, newText, 0, oldStartOfColumnIndex + oldCharactersUsedForColumn);
-				System.arraycopy(text, oldNextColumnIndex, newText, newNextColumnIndex, oldCharactersAfterColumn);
-				mText = text = newText;
-			} else {
-				System.arraycopy(text, oldNextColumnIndex, text, newNextColumnIndex, oldCharactersAfterColumn);
-			}
-		} else if (javaCharDifference < 0) {
-			// Shift the rest of the line left.
-			System.arraycopy(text, oldNextColumnIndex, text, newNextColumnIndex, mSpaceUsed - oldNextColumnIndex);
-		}
-		mSpaceUsed += javaCharDifference;
-
-		// Store char. A combining character is stored at the end of the existing contents so that it modifies them:
-		//noinspection ResultOfMethodCallIgnored - since we already now how many java chars is used.
-		Character.toChars(codePoint, text, oldStartOfColumnIndex + (newIsCombining ? oldCharactersUsedForColumn : 0));
-
-		if (oldCodePointDisplayWidth == 2 && newCodePointDisplayWidth == 1) {
-			// Replace second half of wide char with a space. Which mean that we actually add a ' ' java character.
-			if (mSpaceUsed + 1 > text.length) {
-				char[] newText = new char[text.length + mColumns];
-				System.arraycopy(text, 0, newText, 0, newNextColumnIndex);
-				System.arraycopy(text, newNextColumnIndex, newText, newNextColumnIndex + 1, mSpaceUsed - newNextColumnIndex);
-				mText = text = newText;
-			} else {
-				System.arraycopy(text, newNextColumnIndex, text, newNextColumnIndex + 1, mSpaceUsed - newNextColumnIndex);
-			}
-			text[newNextColumnIndex] = ' ';
-
-			++mSpaceUsed;
-		} else if (oldCodePointDisplayWidth == 1 && newCodePointDisplayWidth == 2) {
-			if (columnToSet == mColumns - 1) {
-				throw new IllegalArgumentException("Cannot put wide character in last column");
-			} else if (columnToSet == mColumns - 2) {
-				// Truncate the line to the second part of this wide char:
-				mSpaceUsed = (short) newNextColumnIndex;
-			} else {
-				// Overwrite the contents of the next column, which mean we actually remove java characters. Due to the
-				// check at the beginning of this method we know that we are not overwriting a wide char.
-				int newNextNextColumnIndex = newNextColumnIndex + (Character.isHighSurrogate(mText[newNextColumnIndex]) ? 2 : 1);
-				int nextLen = newNextNextColumnIndex - newNextColumnIndex;
-
-				// Shift the array leftwards.
-				System.arraycopy(text, newNextNextColumnIndex, text, newNextColumnIndex, mSpaceUsed - newNextNextColumnIndex);
-				mSpaceUsed -= nextLen;
-			}
-		}
-	}
-
-	boolean isBlank() {
-		for (int charIndex = 0, charLen = getSpaceUsed(); charIndex < charLen; charIndex++)
-			if (mText[charIndex] != ' ') return false;
-		return true;
-	}
-
-	public final int getStyle(int column) {
-		return mStyle[column];
-	}
-
-}

app/src/main/java/com/termux/terminal/TerminalSession.java

@@ -1,328 +0,0 @@
-package com.termux.terminal;
-
-import java.io.FileDescriptor;
-import java.io.FileInputStream;
-import java.io.FileOutputStream;
-import java.io.IOException;
-import java.io.InputStream;
-import java.lang.reflect.Field;
-import java.nio.charset.StandardCharsets;
-import java.util.UUID;
-
-import android.annotation.SuppressLint;
-import android.os.Handler;
-import android.os.Message;
-import android.util.Log;
-
-/**
- * A terminal session, consisting of a process coupled to a terminal interface.
- * <p>
- * The subprocess will be executed by the constructor, and when the size is made known by a call to
- * {@link #updateSize(int, int)} terminal emulation will begin and threads will be spawned to handle the subprocess I/O.
- * All terminal emulation and callback methods will be performed on the main thread.
- * <p>
- * The child process may be exited forcefully by using the {@link #finishIfRunning()} method.
- * 
- * NOTE: The terminal session may outlive the EmulatorView, so be careful with callbacks!
- */
-public final class TerminalSession extends TerminalOutput {
-
-	/** Callback to be invoked when a {@link TerminalSession} changes. */
-	public interface SessionChangedCallback {
-		void onTextChanged(TerminalSession changedSession);
-
-		void onTitleChanged(TerminalSession changedSession);
-
-		void onSessionFinished(TerminalSession finishedSession);
-
-		void onClipboardText(TerminalSession session, String text);
-
-		void onBell(TerminalSession session);
-	}
-
-	private static FileDescriptor wrapFileDescriptor(int fileDescriptor) {
-		FileDescriptor result = new FileDescriptor();
-		try {
-			Field descriptorField;
-			try {
-				descriptorField = FileDescriptor.class.getDeclaredField("descriptor");
-			} catch (NoSuchFieldException e) {
-				// For desktop java:
-				descriptorField = FileDescriptor.class.getDeclaredField("fd");
-			}
-			descriptorField.setAccessible(true);
-			descriptorField.set(result, fileDescriptor);
-		} catch (NoSuchFieldException | IllegalAccessException | IllegalArgumentException e) {
-			Log.wtf(EmulatorDebug.LOG_TAG, "Error accessing FileDescriptor#descriptor private field", e);
-			System.exit(1);
-		}
-		return result;
-	}
-
-	private static final int MSG_NEW_INPUT = 1;
-	private static final int MSG_PROCESS_EXITED = 4;
-
-	public final String mHandle = UUID.randomUUID().toString();
-
-	TerminalEmulator mEmulator;
-
-	/**
-	 * A queue written to from a separate thread when the process outputs, and read by main thread to process by
-	 * terminal emulator.
-	 */
-	final ByteQueue mProcessToTerminalIOQueue = new ByteQueue(4096);
-	/**
-	 * A queue written to from the main thread due to user interaction, and read by another thread which forwards by
-	 * writing to the {@link #mTerminalFileDescriptor}.
-	 */
-	final ByteQueue mTerminalToProcessIOQueue = new ByteQueue(4096);
-	/** Buffer to write translate code points into utf8 before writing to mTerminalToProcessIOQueue */
-	private final byte[] mUtf8InputBuffer = new byte[5];
-
-	/** Callback which gets notified when a session finishes or changes title. */
-	final SessionChangedCallback mChangeCallback;
-
-	/** The pid of the shell process. 0 if not started and -1 if finished running. */
-	int mShellPid;
-
-	/** The exit status of the shell process. Only valid if ${@link #mShellPid} is -1. */
-	int mShellExitStatus;
-
-	/**
-	 * The file descriptor referencing the master half of a pseudo-terminal pair, resulting from calling
-	 * {@link JNI#createSubprocess(String, String, String[], String[], int[], int, int)}.
-	 */
-	private int mTerminalFileDescriptor;
-
-	/** Set by the application for user identification of session, not by terminal. */
-	public String mSessionName;
-
-	@SuppressLint("HandlerLeak")
-	final Handler mMainThreadHandler = new Handler() {
-		final byte[] mReceiveBuffer = new byte[4 * 1024];
-
-		@Override
-		public void handleMessage(Message msg) {
-			if (msg.what == MSG_NEW_INPUT && isRunning()) {
-				int bytesRead = mProcessToTerminalIOQueue.read(mReceiveBuffer, false);
-				if (bytesRead > 0) {
-					mEmulator.append(mReceiveBuffer, bytesRead);
-					notifyScreenUpdate();
-				}
-			} else if (msg.what == MSG_PROCESS_EXITED) {
-				int exitCode = (Integer) msg.obj;
-				cleanupResources(exitCode);
-				mChangeCallback.onSessionFinished(TerminalSession.this);
-
-				String exitDescription = "\r\n[Process completed";
-				if (exitCode > 0) {
-					// Non-zero process exit.
-					exitDescription += " with code " + exitCode;
-				} else if (exitCode < 0) {
-					// Negated signal.
-					exitDescription += " with signal " + (-exitCode);
-				}
-				exitDescription += " - press Enter to close]";
-
-				byte[] bytesToWrite = exitDescription.getBytes(StandardCharsets.UTF_8);
-				mEmulator.append(bytesToWrite, bytesToWrite.length);
-				notifyScreenUpdate();
-			}
-		}
-	};
-
-	private final String mShellPath;
-	private final String mCwd;
-	private final String[] mArgs;
-	private final String[] mEnv;
-
-	public TerminalSession(String shellPath, String cwd, String[] args, String[] env, SessionChangedCallback changeCallback) {
-		mChangeCallback = changeCallback;
-
-		this.mShellPath = shellPath;
-		this.mCwd = cwd;
-		this.mArgs = args;
-		this.mEnv = env;
-	}
-
-	/** Inform the attached pty of the new size and reflow or initialize the emulator. */
-	public void updateSize(int columns, int rows) {
-		if (mEmulator == null) {
-			initializeEmulator(columns, rows);
-		} else {
-			JNI.setPtyWindowSize(mTerminalFileDescriptor, rows, columns);
-			mEmulator.resize(columns, rows);
-		}
-	}
-
-	/** The terminal title as set through escape sequences or null if none set. */
-	public String getTitle() {
-		return (mEmulator == null) ? null : mEmulator.getTitle();
-	}
-
-	/**
-	 * Set the terminal emulator's window size and start terminal emulation.
-	 * 
-	 * @param columns
-	 *            The number of columns in the terminal window.
-	 * @param rows
-	 *            The number of rows in the terminal window.
-	 */
-	public void initializeEmulator(int columns, int rows) {
-		mEmulator = new TerminalEmulator(this, columns, rows, /* transcript= */5000);
-
-		int[] processId = new int[1];
-		mTerminalFileDescriptor = JNI.createSubprocess(mShellPath, mCwd, mArgs, mEnv, processId, rows, columns);
-		mShellPid = processId[0];
-
-		final FileDescriptor terminalFileDescriptorWrapped = wrapFileDescriptor(mTerminalFileDescriptor);
-
-		new Thread("TermSessionInputReader[pid=" + mShellPid + "]") {
-			@Override
-			public void run() {
-				try (InputStream termIn = new FileInputStream(terminalFileDescriptorWrapped)) {
-					final byte[] buffer = new byte[4096];
-					while (true) {
-						int read = termIn.read(buffer);
-						if (read == -1) return;
-						if (!mProcessToTerminalIOQueue.write(buffer, 0, read)) return;
-						mMainThreadHandler.sendEmptyMessage(MSG_NEW_INPUT);
-					}
-				} catch (Exception e) {
-					// Ignore, just shutting down.
-				} finally {
-					// Now wait for process exit:
-					int processExitCode = JNI.waitFor(mShellPid);
-					mMainThreadHandler.sendMessage(mMainThreadHandler.obtainMessage(MSG_PROCESS_EXITED, processExitCode));
-				}
-			}
-		}.start();
-
-		new Thread("TermSessionOutputWriter[pid=" + mShellPid + "]") {
-			@Override
-			public void run() {
-				final byte[] buffer = new byte[4096];
-				try (FileOutputStream termOut = new FileOutputStream(terminalFileDescriptorWrapped)) {
-					while (true) {
-						int bytesToWrite = mTerminalToProcessIOQueue.read(buffer, true);
-						if (bytesToWrite == -1) return;
-						termOut.write(buffer, 0, bytesToWrite);
-					}
-				} catch (IOException e) {
-					// Ignore.
-				}
-			}
-		}.start();
-	}
-
-	/** Write data to the shell process. */
-	@Override
-	public void write(byte[] data, int offset, int count) {
-		if (mShellPid > 0) mTerminalToProcessIOQueue.write(data, offset, count);
-	}
-
-	/** Write the Unicode code point to the terminal encoded in UTF-8. */
-	public void writeCodePoint(boolean prependEscape, int codePoint) {
-		if (codePoint > 1114111 || (codePoint >= 0xD800 && codePoint <= 0xDFFF)) {
-			// 1114111 (= 2**16 + 1024**2 - 1) is the highest code point, [0xD800,0xDFFF] is the surrogate range.
-			throw new IllegalArgumentException("Invalid code point: " + codePoint);
-		}
-
-		int bufferPosition = 0;
-		if (prependEscape) mUtf8InputBuffer[bufferPosition++] = 27;
-
-		if (codePoint <= /* 7 bits */0b1111111) {
-			mUtf8InputBuffer[bufferPosition++] = (byte) codePoint;
-		} else if (codePoint <= /* 11 bits */0b11111111111) {
-			/* 110xxxxx leading byte with leading 5 bits */
-			mUtf8InputBuffer[bufferPosition++] = (byte) (0b11000000 | (codePoint >> 6));
-			/* 10xxxxxx continuation byte with following 6 bits */
-			mUtf8InputBuffer[bufferPosition++] = (byte) (0b10000000 | (codePoint & 0b111111));
-		} else if (codePoint <= /* 16 bits */0b1111111111111111) {
-			/* 1110xxxx leading byte with leading 4 bits */
-			mUtf8InputBuffer[bufferPosition++] = (byte) (0b11100000 | (codePoint >> 12));
-			/* 10xxxxxx continuation byte with following 6 bits */
-			mUtf8InputBuffer[bufferPosition++] = (byte) (0b10000000 | ((codePoint >> 6) & 0b111111));
-			/* 10xxxxxx continuation byte with following 6 bits */
-			mUtf8InputBuffer[bufferPosition++] = (byte) (0b10000000 | (codePoint & 0b111111));
-		} else { /* We have checked codePoint <= 1114111 above, so we have max 21 bits = 0b111111111111111111111 */
-			/* 11110xxx leading byte with leading 3 bits */
-			mUtf8InputBuffer[bufferPosition++] = (byte) (0b11110000 | (codePoint >> 18));
-			/* 10xxxxxx continuation byte with following 6 bits */
-			mUtf8InputBuffer[bufferPosition++] = (byte) (0b10000000 | ((codePoint >> 12) & 0b111111));
-			/* 10xxxxxx continuation byte with following 6 bits */
-			mUtf8InputBuffer[bufferPosition++] = (byte) (0b10000000 | ((codePoint >> 6) & 0b111111));
-			/* 10xxxxxx continuation byte with following 6 bits */
-			mUtf8InputBuffer[bufferPosition++] = (byte) (0b10000000 | (codePoint & 0b111111));
-		}
-		write(mUtf8InputBuffer, 0, bufferPosition);
-	}
-
-	public TerminalEmulator getEmulator() {
-		return mEmulator;
-	}
-
-	/** Notify the {@link #mChangeCallback} that the screen has changed. */
-	protected void notifyScreenUpdate() {
-		mChangeCallback.onTextChanged(this);
-	}
-
-	/** Reset state for terminal emulator state. */
-	public void reset() {
-		mEmulator.reset();
-		notifyScreenUpdate();
-	}
-
-	/**
-	 * Finish this terminal session. Frees resources used by the terminal emulator and closes the attached
-	 * <code>InputStream</code> and <code>OutputStream</code>.
-	 */
-	public void finishIfRunning() {
-		if (isRunning()) {
-			JNI.hangupProcessGroup(mShellPid);
-			// Stop the reader and writer threads, and close the I/O streams. Note that
-			// cleanupResources() will be run later.
-			mTerminalToProcessIOQueue.close();
-			mProcessToTerminalIOQueue.close();
-			JNI.close(mTerminalFileDescriptor);
-		}
-	}
-
-	/** Cleanup resources when the process exits. */
-	void cleanupResources(int exitStatus) {
-		synchronized (this) {
-			mShellPid = -1;
-			mShellExitStatus = exitStatus;
-		}
-
-		// Stop the reader and writer threads, and close the I/O streams
-		mTerminalToProcessIOQueue.close();
-		mProcessToTerminalIOQueue.close();
-		JNI.close(mTerminalFileDescriptor);
-	}
-
-	@Override
-	public void titleChanged(String oldTitle, String newTitle) {
-		mChangeCallback.onTitleChanged(this);
-	}
-
-	public synchronized boolean isRunning() {
-		return mShellPid != -1;
-	}
-
-	/** Only valid if not {@link #isRunning()}. */
-	public synchronized int getExitStatus() {
-		return mShellExitStatus;
-	}
-
-	@Override
-	public void clipboardText(String text) {
-		mChangeCallback.onClipboardText(this, text);
-	}
-
-	@Override
-	public void onBell() {
-		mChangeCallback.onBell(this);
-	}
-
-}

app/src/main/java/com/termux/terminal/TextStyle.java

@@ -1,55 +0,0 @@
-package com.termux.terminal;
-
-/**
- * Encodes effects, foreground and background colors into a 32 bit integer, which are stored for each cell in a terminal
- * row in {@link TerminalRow#mStyle}.
- * 
- * The foreground and background colors take 9 bits each, leaving (32-9-9)=14 bits for effect flags. Using 9 for now
- * (the different CHARACTER_ATTRIBUTE_* bits).
- */
-public final class TextStyle {
-
-	public final static int CHARACTER_ATTRIBUTE_BOLD = 1;
-	public final static int CHARACTER_ATTRIBUTE_ITALIC = 1 << 1;
-	public final static int CHARACTER_ATTRIBUTE_UNDERLINE = 1 << 2;
-	public final static int CHARACTER_ATTRIBUTE_BLINK = 1 << 3;
-	public final static int CHARACTER_ATTRIBUTE_INVERSE = 1 << 4;
-	public final static int CHARACTER_ATTRIBUTE_INVISIBLE = 1 << 5;
-	public final static int CHARACTER_ATTRIBUTE_STRIKETHROUGH = 1 << 6;
-	/**
-	 * The selective erase control functions (DECSED and DECSEL) can only erase characters defined as erasable.
-	 * 
-	 * This bit is set if DECSCA (Select Character Protection Attribute) has been used to define the characters that
-	 * come after it as erasable from the screen.
-	 */
-	public final static int CHARACTER_ATTRIBUTE_PROTECTED = 1 << 7;
-	/** Dim colors. Also known as faint or half intensity. */
-	public final static int CHARACTER_ATTRIBUTE_DIM = 1 << 8;
-
-	public final static int COLOR_INDEX_FOREGROUND = 256;
-	public final static int COLOR_INDEX_BACKGROUND = 257;
-	public final static int COLOR_INDEX_CURSOR = 258;
-
-	/** The 256 standard color entries and the three special (foreground, background and cursor) ones. */
-	public final static int NUM_INDEXED_COLORS = 259;
-
-	/** Normal foreground and background colors and no effects. */
-	final static int NORMAL = encode(COLOR_INDEX_FOREGROUND, COLOR_INDEX_BACKGROUND, 0);
-
-	static int encode(int foreColor, int backColor, int effect) {
-		return ((effect & 0b111111111) << 18) | ((foreColor & 0b111111111) << 9) | (backColor & 0b111111111);
-	}
-
-	public static int decodeForeColor(int encodedColor) {
-		return (encodedColor >> 9) & 0b111111111;
-	}
-
-	public static int decodeBackColor(int encodedColor) {
-		return encodedColor & 0b111111111;
-	}
-
-	public static int decodeEffect(int encodedColor) {
-		return (encodedColor >> 18) & 0b111111111;
-	}
-
-}

app/src/main/java/com/termux/terminal/WcWidth.java

@@ -1,108 +0,0 @@
-package com.termux.terminal;
-
-/**
- * wcwidth() implementation from http://git.musl-libc.org/cgit/musl/tree/src/ctype
- * 
- * Modified to return 0 instead of -1.
- */
-public final class WcWidth {
-
-	private static final short table[] = { 16, 16, 16, 18, 19, 20, 21, 22, 23, 24, 25, 26, 27, 28, 29, 30, 31, 16, 16, 32, 16, 16, 16, 33, 34, 35, 36, 37, 38,
-			39, 16, 16, 40, 16, 16, 16, 16, 16, 16, 16, 16, 16, 16, 16, 41, 42, 16, 16, 43, 16, 16, 16, 16, 16, 16, 16, 16, 16, 16, 16, 16, 16, 16, 16, 16, 16,
-			16, 16, 16, 16, 16, 16, 16, 16, 16, 16, 16, 16, 16, 16, 16, 16, 16, 16, 16, 16, 16, 16, 16, 16, 16, 16, 16, 16, 16, 16, 16, 16, 16, 16, 16, 16, 16,
-			16, 16, 16, 16, 16, 16, 16, 16, 16, 16, 16, 16, 16, 16, 16, 16, 16, 16, 16, 16, 16, 16, 16, 16, 16, 16, 16, 16, 16, 16, 16, 16, 16, 16, 16, 16, 16,
-			16, 16, 16, 16, 16, 16, 16, 16, 16, 16, 16, 16, 16, 16, 16, 16, 16, 16, 16, 16, 16, 16, 16, 16, 16, 16, 44, 16, 45, 46, 47, 48, 16, 16, 16, 16, 16,
-			16, 16, 16, 16, 16, 16, 16, 16, 16, 16, 16, 16, 16, 16, 16, 16, 16, 16, 16, 16, 16, 16, 16, 16, 16, 16, 16, 16, 16, 16, 16, 16, 16, 16, 16, 16, 16,
-			16, 16, 16, 16, 16, 16, 16, 16, 16, 16, 16, 16, 16, 16, 16, 16, 16, 16, 16, 16, 16, 16, 16, 16, 16, 16, 16, 16, 16, 16, 16, 16, 16, 16, 16, 16, 16,
-			49, 16, 16, 50, 51, 16, 52, 16, 16, 16, 16, 16, 16, 16, 16, 53, 16, 16, 16, 16, 16, 54, 55, 16, 16, 16, 16, 56, 16, 16, 16, 16, 16, 16, 16, 16, 16,
-			16, 16, 16, 16, 16, 16, 16, 16, 16, 16, 16, 16, 16, 16, 16, 16, 16, 16, 16, 16, 16, 16, 16, 16, 16, 16, 16, 16, 16, 16, 16, 16, 16, 16, 16, 16, 16,
-			16, 16, 16, 16, 16, 16, 16, 16, 16, 16, 16, 16, 16, 16, 16, 16, 16, 16, 16, 16, 16, 16, 16, 16, 16, 16, 16, 16, 16, 16, 16, 16, 16, 16, 16, 16, 16,
-			16, 16, 16, 16, 16, 57, 16, 16, 16, 16, 16, 16, 16, 16, 16, 16, 16, 16, 16, 16, 16, 16, 16, 16, 16, 16, 16, 16, 16, 16, 16, 16, 16, 16, 16, 16, 16,
-			16, 16, 16, 16, 16, 16, 16, 16, 16, 16, 16, 16, 16, 16, 16, 16, 16, 16, 16, 16, 16, 16, 16, 16, 16, 16, 16, 16, 16, 16, 16, 16, 16, 16, 16, 16, 16,
-			16, 16, 16, 16, 16, 16, 16, 16, 16, 16, 16, 16, 16, 16, 16, 16, 16, 16, 16, 16, 16, 16, 16, 16, 16, 16, 16, 16, 16, 58, 59, 16, 16, 16, 16, 16, 16,
-			16, 16, 16, 16, 16, 16, 16, 16, 16, 16, 16, 16, 16, 16, 16, 16, 16, 16, 16, 16, 16, 16, 16, 16, 16, 16, 16, 16, 16, 16, 16, 16, 16, 16, 16, 16, 16,
-			16, 16, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 255, 255, 255, 255, 255, 255, 255, 255,
-			255, 255, 255, 255, 255, 255, 255, 255, 255, 255, 255, 255, 255, 255, 255, 255, 255, 255, 255, 255, 255, 255, 255, 255, 255, 255, 255, 255, 255,
-			255, 255, 255, 255, 255, 255, 255, 255, 255, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0,
-			248, 3, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 254, 255, 255, 255, 255, 191, 182, 0, 0, 0,
-			0, 0, 0, 0, 31, 0, 255, 7, 0, 0, 0, 0, 0, 248, 255, 255, 0, 0, 1, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 192, 191, 159, 61, 0, 0, 0, 128, 2, 0, 0, 0,
-			255, 255, 255, 7, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 192, 255, 1, 0, 0, 0, 0, 0, 0, 248, 15, 0, 0, 0, 192, 251, 239, 62, 0, 0, 0, 0, 0, 14, 0, 0, 0, 0,
-			0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 240, 255, 255, 127, 7, 0, 0, 0, 0, 0, 0, 20, 254, 33, 254, 0, 12, 0, 0, 0, 2, 0, 0, 0, 0, 0, 0, 16, 30, 32, 0,
-			0, 12, 0, 0, 0, 6, 0, 0, 0, 0, 0, 0, 16, 134, 57, 2, 0, 0, 0, 35, 0, 6, 0, 0, 0, 0, 0, 0, 16, 190, 33, 0, 0, 12, 0, 0, 0, 2, 0, 0, 0, 0, 0, 0, 144,
-			30, 32, 64, 0, 12, 0, 0, 0, 4, 0, 0, 0, 0, 0, 0, 0, 1, 32, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 192, 193, 61, 96, 0, 12, 0, 0, 0, 0, 0, 0, 0, 0,
-			0, 0, 144, 64, 48, 0, 0, 12, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 30, 32, 0, 0, 12, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 4, 92, 0, 0, 0, 0, 0, 0, 0, 0,
-			0, 0, 0, 242, 7, 128, 127, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 242, 27, 0, 63, 0, 0, 0, 0, 0, 0, 0, 0, 0, 3, 0, 0, 160, 2, 0, 0, 0, 0, 0, 0, 254,
-			127, 223, 224, 255, 254, 255, 255, 255, 31, 64, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 224, 253, 102, 0, 0, 0, 195, 1, 0, 30, 0, 100, 32, 0, 32, 0, 0,
-			0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 224, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 28, 0, 0, 0,
-			28, 0, 0, 0, 12, 0, 0, 0, 12, 0, 0, 0, 0, 0, 0, 0, 176, 63, 64, 254, 15, 32, 0, 0, 0, 0, 0, 56, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0,
-			0, 0, 2, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 135, 1, 4, 14, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0,
-			128, 1, 0, 0, 0, 0, 0, 0, 64, 127, 229, 31, 248, 159, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 15, 0, 0, 0, 0, 0, 208, 23, 4, 0, 0, 0, 0,
-			248, 15, 0, 3, 0, 0, 0, 60, 11, 0, 0, 0, 0, 0, 0, 64, 163, 3, 0, 0, 0, 0, 0, 0, 240, 207, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0,
-			247, 255, 253, 33, 16, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 255, 255, 255, 255, 127, 0, 0, 240, 0, 248, 0, 0,
-			0, 124, 0, 0, 0, 0, 0, 0, 31, 252, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 255, 255, 255, 255, 1, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0,
-			0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 128, 3, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 128, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 255, 255, 255,
-			255, 0, 0, 0, 0, 0, 60, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 6, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 128,
-			247, 63, 0, 0, 0, 128, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 3, 0, 68, 8, 0, 0, 96, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 16, 0, 0, 0,
-			255, 255, 3, 0, 0, 0, 0, 0, 192, 63, 0, 0, 128, 255, 3, 0, 0, 0, 0, 0, 7, 0, 0, 0, 0, 0, 200, 19, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 126, 102,
-			0, 8, 16, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 157, 193, 2, 0, 0, 0, 0, 48, 64, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0,
-			0, 0, 0, 0, 0, 0, 32, 33, 0, 0, 0, 0, 0, 64, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 255, 255, 0, 0,
-			127, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 128, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0,
-			0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 14, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 32, 110, 240, 0,
-			0, 0, 0, 0, 135, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 2, 0, 0, 0, 0, 0, 0, 255, 127, 0, 0, 0, 0, 0, 0, 0, 3, 0,
-			0, 0, 0, 0, 120, 38, 0, 0, 0, 0, 0, 0, 0, 0, 7, 0, 0, 0, 128, 239, 31, 0, 0, 0, 0, 0, 0, 0, 0, 0, 3, 0, 0, 0, 0, 0, 192, 127, 0, 0, 0, 0, 0, 0, 0,
-			0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 40, 191, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0,
-			0, 0, 128, 7, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 128, 3, 248, 255, 231, 15, 0, 0, 0, 60, 0, 0, 0, 0, 0, 0,
-			0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 28, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, };
-
-	private static final short wtable[] = { 16, 16, 16, 16, 16, 16, 16, 16, 16, 16, 16, 16, 16, 16, 16, 16, 16, 18, 16, 16, 16, 16, 16, 16, 16, 16, 16, 16, 16,
-			16, 16, 16, 16, 16, 16, 19, 16, 16, 16, 16, 16, 16, 16, 16, 16, 16, 20, 21, 22, 23, 24, 17, 17, 17, 17, 17, 17, 17, 17, 17, 17, 17, 17, 17, 17, 17,
-			17, 17, 17, 17, 17, 17, 17, 17, 17, 17, 17, 25, 17, 17, 17, 17, 17, 17, 17, 17, 17, 17, 17, 17, 17, 17, 17, 17, 17, 17, 17, 17, 17, 17, 17, 17, 17,
-			17, 17, 17, 17, 17, 17, 17, 17, 17, 17, 17, 17, 17, 17, 17, 17, 17, 17, 17, 17, 17, 17, 17, 17, 17, 17, 17, 17, 17, 17, 17, 17, 17, 17, 17, 17, 17,
-			17, 17, 17, 17, 17, 17, 17, 17, 17, 17, 17, 17, 17, 17, 17, 17, 17, 17, 17, 17, 17, 17, 17, 17, 26, 16, 16, 16, 16, 27, 16, 16, 17, 17, 17, 17, 17,
-			17, 17, 17, 17, 17, 17, 17, 17, 17, 17, 17, 17, 17, 17, 17, 17, 17, 17, 17, 17, 17, 17, 17, 17, 17, 17, 17, 17, 17, 17, 17, 17, 17, 17, 17, 17, 17,
-			17, 28, 16, 16, 16, 16, 16, 16, 16, 16, 16, 16, 16, 16, 16, 16, 16, 16, 16, 16, 16, 16, 16, 16, 16, 16, 16, 16, 16, 16, 16, 16, 16, 16, 16, 17, 17,
-			16, 16, 16, 29, 30, 16, 16, 16, 16, 16, 16, 16, 16, 16, 16, 16, 16, 16, 16, 16, 16, 16, 16, 16, 16, 16, 16, 16, 16, 16, 16, 16, 16, 16, 16, 16, 16,
-			16, 16, 16, 16, 16, 16, 16, 16, 16, 16, 16, 16, 16, 16, 16, 16, 16, 16, 16, 16, 16, 16, 16, 16, 16, 16, 16, 16, 16, 16, 16, 16, 16, 16, 16, 16, 16,
-			16, 16, 16, 16, 16, 16, 16, 16, 16, 16, 16, 16, 16, 16, 16, 16, 16, 16, 16, 16, 16, 16, 16, 16, 16, 16, 16, 16, 16, 16, 16, 16, 16, 16, 16, 16, 16,
-			16, 16, 16, 16, 16, 16, 16, 16, 16, 16, 16, 16, 16, 16, 16, 16, 16, 16, 16, 16, 16, 16, 16, 16, 16, 16, 16, 16, 16, 16, 16, 16, 16, 16, 16, 16, 16,
-			16, 16, 16, 16, 16, 16, 16, 16, 16, 16, 16, 16, 16, 16, 16, 16, 16, 16, 16, 16, 16, 16, 16, 16, 16, 16, 16, 16, 16, 16, 16, 16, 16, 31, 16, 16, 16,
-			16, 16, 16, 16, 16, 16, 16, 16, 16, 16, 16, 16, 16, 16, 16, 16, 16, 16, 16, 16, 16, 16, 16, 16, 16, 16, 16, 16, 16, 16, 16, 16, 16, 16, 16, 16, 16,
-			16, 16, 16, 16, 16, 16, 16, 16, 16, 16, 16, 16, 16, 16, 16, 16, 16, 16, 16, 16, 16, 16, 16, 16, 16, 32, 16, 16, 16, 16, 16, 16, 16, 16, 16, 16, 16,
-			16, 16, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 255, 255, 255, 255, 255, 255, 255, 255,
-			255, 255, 255, 255, 255, 255, 255, 255, 255, 255, 255, 255, 255, 255, 255, 255, 255, 255, 255, 255, 255, 255, 255, 255, 255, 255, 255, 255, 255,
-			255, 255, 255, 255, 255, 255, 255, 0, 0, 0, 0, 0, 0, 0, 0, 248, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 252, 0, 0, 0, 0, 0, 6, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0,
-			0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 255, 255, 255, 251, 255, 255, 255, 255, 255, 255,
-			255, 255, 255, 255, 15, 0, 255, 255, 255, 255, 255, 255, 255, 255, 255, 255, 255, 255, 255, 255, 255, 255, 255, 255, 255, 255, 255, 255, 255, 255,
-			255, 255, 63, 0, 0, 0, 255, 15, 255, 255, 255, 255, 255, 255, 255, 127, 254, 255, 255, 255, 255, 255, 255, 255, 255, 255, 127, 254, 255, 255, 255,
-			255, 255, 255, 255, 255, 255, 255, 255, 255, 224, 255, 255, 255, 255, 63, 254, 255, 255, 255, 255, 255, 255, 255, 255, 255, 255, 127, 255, 255,
-			255, 255, 255, 7, 255, 255, 255, 255, 15, 0, 255, 255, 255, 255, 255, 127, 255, 255, 255, 255, 255, 0, 255, 255, 255, 255, 255, 255, 255, 255, 255,
-			255, 255, 255, 255, 255, 255, 255, 255, 255, 255, 255, 255, 127, 255, 255, 255, 255, 255, 255, 255, 255, 255, 255, 255, 255, 255, 255, 255, 255,
-			255, 255, 255, 255, 255, 255, 255, 255, 0, 0, 0, 0, 0, 0, 0, 0, 255, 255, 255, 255, 255, 255, 255, 255, 255, 255, 255, 255, 255, 255, 255, 255,
-			255, 31, 255, 255, 255, 255, 255, 255, 127, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 255, 255, 255, 31, 0, 0, 0, 0, 0, 0, 0, 0, 0,
-			0, 0, 0, 0, 0, 0, 0, 255, 255, 255, 255, 255, 255, 255, 255, 255, 255, 255, 255, 255, 255, 255, 255, 255, 255, 255, 255, 15, 0, 255, 255, 127, 248,
-			255, 255, 255, 255, 255, 15, 0, 0, 255, 3, 0, 0, 255, 255, 255, 255, 247, 255, 127, 15, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 254,
-			255, 255, 255, 255, 255, 255, 255, 255, 255, 255, 255, 1, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 127, 0, 0, 0, 3, 0, 0, 0, 0, 0, 0, 0, 0, 0,
-			0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 7, 0, 255, 255, 255, 255, 255, 7, 255, 1, 3, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0,
-			0, 0, 0, 0, 0, 0, 0, 0, 0 };
-
-	/** Return the terminal display width of a code point: 0, 1 or 2. */
-	public static int width(int wc) {
-		if (wc < 0xff) return (wc + 1 & 0x7f) >= 0x21 ? 1 : (wc != 0) ? 0 : 0;
-		if ((wc & 0xfffeffff) < 0xfffe) {
-			if (((table[table[wc >> 8] * 32 + ((wc & 255) >> 3)] >> (wc & 7)) & 1) != 0) return 0;
-			if (((wtable[wtable[wc >> 8] * 32 + ((wc & 255) >> 3)] >> (wc & 7)) & 1) != 0) return 2;
-			return 1;
-		}
-		if ((wc & 0xfffe) == 0xfffe) return 0;
-		if (wc - 0x20000 < 0x20000) return 2;
-		if (wc == 0xe0001 || wc - 0xe0020 < 0x5f || wc - 0xe0100 < 0xef) return 0;
-		return 1;
-	}
-
-	/** The width at an index position in a java char array. */
-	public static int width(char[] chars, int index) {
-		char c = chars[index];
-		return Character.isHighSurrogate(c) ? width(Character.toCodePoint(c, chars[index + 1])) : width(c);
-	}
-
-}

app/src/main/java/com/termux/view/GestureAndScaleRecognizer.java

@@ -1,111 +0,0 @@
-package com.termux.view;
-
-import android.content.Context;
-import android.view.GestureDetector;
-import android.view.MotionEvent;
-import android.view.ScaleGestureDetector;
-
-/** A combination of {@link GestureDetector} and {@link ScaleGestureDetector}. */
-public final class GestureAndScaleRecognizer {
-
-	public interface Listener {
-		boolean onSingleTapUp(MotionEvent e);
-
-		boolean onDoubleTap(MotionEvent e);
-
-		boolean onScroll(MotionEvent e2, float dx, float dy);
-
-		boolean onFling(MotionEvent e, float velocityX, float velocityY);
-
-		boolean onScale(float focusX, float focusY, float scale);
-
-		boolean onDown(float x, float y);
-
-		boolean onUp(MotionEvent e);
-
-		void onLongPress(MotionEvent e);
-	}
-
-	private final GestureDetector mGestureDetector;
-	private final ScaleGestureDetector mScaleDetector;
-	final Listener mListener;
-	boolean isAfterLongPress;
-
-	public GestureAndScaleRecognizer(Context context, Listener listener) {
-		mListener = listener;
-
-		mGestureDetector = new GestureDetector(context, new GestureDetector.SimpleOnGestureListener() {
-			@Override
-			public boolean onScroll(MotionEvent e1, MotionEvent e2, float dx, float dy) {
-				return mListener.onScroll(e2, dx, dy);
-			}
-
-			@Override
-			public boolean onFling(MotionEvent e1, MotionEvent e2, float velocityX, float velocityY) {
-				return mListener.onFling(e2, velocityX, velocityY);
-			}
-
-			@Override
-			public boolean onDown(MotionEvent e) {
-				return mListener.onDown(e.getX(), e.getY());
-			}
-
-			@Override
-			public void onLongPress(MotionEvent e) {
-				mListener.onLongPress(e);
-				isAfterLongPress = true;
-			}
-		}, null, true /* ignoreMultitouch */);
-
-		mGestureDetector.setOnDoubleTapListener(new GestureDetector.OnDoubleTapListener() {
-			@Override
-			public boolean onSingleTapConfirmed(MotionEvent e) {
-				return mListener.onSingleTapUp(e);
-			}
-
-			@Override
-			public boolean onDoubleTap(MotionEvent e) {
-				return mListener.onDoubleTap(e);
-			}
-
-			@Override
-			public boolean onDoubleTapEvent(MotionEvent e) {
-				return true;
-			}
-		});
-
-		mScaleDetector = new ScaleGestureDetector(context, new ScaleGestureDetector.SimpleOnScaleGestureListener() {
-			@Override
-			public boolean onScaleBegin(ScaleGestureDetector detector) {
-				return true;
-			}
-
-			@Override
-			public boolean onScale(ScaleGestureDetector detector) {
-				return mListener.onScale(detector.getFocusX(), detector.getFocusY(), detector.getScaleFactor());
-			}
-		});
-	}
-
-	public void onTouchEvent(MotionEvent event) {
-		mGestureDetector.onTouchEvent(event);
-		mScaleDetector.onTouchEvent(event);
-		switch (event.getAction()) {
-			case MotionEvent.ACTION_DOWN:
-				isAfterLongPress = false;
-				break;
-			case MotionEvent.ACTION_UP:
-				if (!isAfterLongPress) {
-					// This behaviour is desired when in e.g. vim with mouse events, where we do not
-					// want to move the cursor when lifting finger after a long press.
-					mListener.onUp(event);
-				}
-				break;
-		}
-	}
-
-	public boolean isInProgress() {
-		return mScaleDetector.isInProgress();
-	}
-
-}

app/src/main/java/com/termux/view/TerminalKeyListener.java

@@ -1,24 +0,0 @@
-package com.termux.view;
-
-import android.view.MotionEvent;
-import android.view.ScaleGestureDetector;
-
-/**
- * Input and scale listener which may be set on a {@link TerminalView} through
- * {@link TerminalView#setOnKeyListener(TerminalKeyListener)}.
- *
- * TODO: Rename to TerminalViewClient.
- */
-public interface TerminalKeyListener {
-
-	/** Callback function on scale events according to {@link ScaleGestureDetector#getScaleFactor()}. */
-	float onScale(float scale);
-
-	/** On a single tap on the terminal if terminal mouse reporting not enabled. */
-	void onSingleTapUp(MotionEvent e);
-
-	boolean shouldBackButtonBeMappedToEscape();
-
-	void copyModeChanged(boolean copyMode);
-
-}

app/src/main/java/com/termux/view/TerminalRenderer.java

@@ -1,236 +0,0 @@
-package com.termux.view;
-
-import android.graphics.Canvas;
-import android.graphics.Paint;
-import android.graphics.PorterDuff;
-import android.graphics.Typeface;
-
-import com.termux.terminal.TerminalBuffer;
-import com.termux.terminal.TerminalEmulator;
-import com.termux.terminal.TerminalRow;
-import com.termux.terminal.TextStyle;
-import com.termux.terminal.WcWidth;
-
-/**
- * Renderer of a {@link TerminalEmulator} into a {@link Canvas}.
- * 
- * Saves font metrics, so needs to be recreated each time the typeface or font size changes.
- */
-final class TerminalRenderer {
-
-	final int mTextSize;
-	final Typeface mTypeface;
-	private final Paint mTextPaint = new Paint();
-
-	/** The width of a single mono spaced character obtained by {@link Paint#measureText(String)} on a single 'X'. */
-	final float mFontWidth;
-	/** The {@link Paint#getFontSpacing()}. See http://www.fampennings.nl/maarten/android/08numgrid/font.png */
-	final int mFontLineSpacing;
-	/** The {@link Paint#ascent()}. See http://www.fampennings.nl/maarten/android/08numgrid/font.png */
-	private final int mFontAscent;
-	/** The {@link #mFontLineSpacing} + {@link #mFontAscent}. */
-	final int mFontLineSpacingAndAscent;
-
-	private final float[] asciiMeasures = new float[127];
-
-	public TerminalRenderer(int textSize, Typeface typeface) {
-		mTextSize = textSize;
-		mTypeface = typeface;
-
-		mTextPaint.setTypeface(typeface);
-		mTextPaint.setAntiAlias(true);
-		mTextPaint.setTextSize(textSize);
-
-		mFontLineSpacing = (int) Math.ceil(mTextPaint.getFontSpacing());
-		mFontAscent = (int) Math.ceil(mTextPaint.ascent());
-		mFontLineSpacingAndAscent = mFontLineSpacing + mFontAscent;
-		mFontWidth = mTextPaint.measureText("X");
-
-		StringBuilder sb = new StringBuilder(" ");
-		for (int i = 0; i < asciiMeasures.length; i++) {
-			sb.setCharAt(0, (char) i);
-			asciiMeasures[i] = mTextPaint.measureText(sb, 0, 1);
-		}
-	}
-
-	/** Render the terminal to a canvas with at a specified row scroll, and an optional rectangular selection. */
-	public final void render(TerminalEmulator mEmulator, Canvas canvas, int topRow, int selectionY1, int selectionY2, int selectionX1, int selectionX2) {
-		final boolean reverseVideo = mEmulator.isReverseVideo();
-		final int endRow = topRow + mEmulator.mRows;
-		final int columns = mEmulator.mColumns;
-		final int cursorCol = mEmulator.getCursorCol();
-		final int cursorRow = mEmulator.getCursorRow();
-		final boolean cursorVisible = mEmulator.isShowingCursor();
-		final TerminalBuffer screen = mEmulator.getScreen();
-		final int[] palette = mEmulator.mColors.mCurrentColors;
-
-		int fillColor = palette[reverseVideo ? TextStyle.COLOR_INDEX_FOREGROUND : TextStyle.COLOR_INDEX_BACKGROUND];
-		canvas.drawColor(fillColor, PorterDuff.Mode.SRC);
-
-		float heightOffset = mFontLineSpacingAndAscent;
-		for (int row = topRow; row < endRow; row++) {
-			heightOffset += mFontLineSpacing;
-
-			final int cursorX = (row == cursorRow && cursorVisible) ? cursorCol : -1;
-			int selx1 = -1, selx2 = -1;
-			if (row >= selectionY1 && row <= selectionY2) {
-				if (row == selectionY1) selx1 = selectionX1;
-				selx2 = (row == selectionY2) ? selectionX2 : mEmulator.mColumns;
-			}
-
-			TerminalRow lineObject = screen.allocateFullLineIfNecessary(screen.externalToInternalRow(row));
-			final char[] line = lineObject.mText;
-			final int charsUsedInLine = lineObject.getSpaceUsed();
-
-			int lastRunStyle = 0;
-			boolean lastRunInsideCursor = false;
-			int lastRunStartColumn = -1;
-			int lastRunStartIndex = 0;
-			boolean lastRunFontWidthMismatch = false;
-			int currentCharIndex = 0;
-			float measuredWidthForRun = 0.f;
-
-			for (int column = 0; column < columns;) {
-				final char charAtIndex = line[currentCharIndex];
-				final boolean charIsHighsurrogate = Character.isHighSurrogate(charAtIndex);
-				final int charsForCodePoint = charIsHighsurrogate ? 2 : 1;
-				final int codePoint = charIsHighsurrogate ? Character.toCodePoint(charAtIndex, line[currentCharIndex + 1]) : charAtIndex;
-				final int codePointWcWidth = WcWidth.width(codePoint);
-				final boolean insideCursor = (column >= selx1 && column <= selx2) || (cursorX == column || (codePointWcWidth == 2 && cursorX == column + 1));
-				final int style = lineObject.getStyle(column);
-
-				// Check if the measured text width for this code point is not the same as that expected by wcwidth().
-				// This could happen for some fonts which are not truly monospace, or for more exotic characters such as
-				// smileys which android font renders as wide.
-				// If this is detected, we draw this code point scaled to match what wcwidth() expects.
-				final float measuredCodePointWidth = (codePoint < asciiMeasures.length) ? asciiMeasures[codePoint] : mTextPaint.measureText(line,
-						currentCharIndex, charsForCodePoint);
-				final boolean fontWidthMismatch = Math.abs(measuredCodePointWidth / mFontWidth - codePointWcWidth) > 0.01;
-
-				if (style != lastRunStyle || insideCursor != lastRunInsideCursor || fontWidthMismatch || lastRunFontWidthMismatch) {
-					if (column == 0) {
-						// Skip first column as there is nothing to draw, just record the current style.
-					} else {
-						final int columnWidthSinceLastRun = column - lastRunStartColumn;
-						final int charsSinceLastRun = currentCharIndex - lastRunStartIndex;
-						drawTextRun(canvas, line, palette, heightOffset, lastRunStartColumn, columnWidthSinceLastRun, lastRunStartIndex, charsSinceLastRun,
-								measuredWidthForRun, lastRunInsideCursor, lastRunStyle, reverseVideo);
-					}
-					measuredWidthForRun = 0.f;
-					lastRunStyle = style;
-					lastRunInsideCursor = insideCursor;
-					lastRunStartColumn = column;
-					lastRunStartIndex = currentCharIndex;
-					lastRunFontWidthMismatch = fontWidthMismatch;
-				}
-				measuredWidthForRun += measuredCodePointWidth;
-				column += codePointWcWidth;
-				currentCharIndex += charsForCodePoint;
-				while (currentCharIndex < charsUsedInLine && WcWidth.width(line, currentCharIndex) <= 0) {
-					// Eat combining chars so that they are treated as part of the last non-combining code point,
-					// instead of e.g. being considered inside the cursor in the next run.
-					currentCharIndex += Character.isHighSurrogate(line[currentCharIndex]) ? 2 : 1;
-				}
-			}
-
-			final int columnWidthSinceLastRun = columns - lastRunStartColumn;
-			final int charsSinceLastRun = currentCharIndex - lastRunStartIndex;
-			drawTextRun(canvas, line, palette, heightOffset, lastRunStartColumn, columnWidthSinceLastRun, lastRunStartIndex, charsSinceLastRun,
-					measuredWidthForRun, lastRunInsideCursor, lastRunStyle, reverseVideo);
-		}
-	}
-
-	/**
-	 * @param canvas
-	 *            the canvas to render on
-	 * @param palette
-	 *            the color palette to look up colors from textStyle
-	 * @param y
-	 *            height offset into the canvas where to render the line: line * {@link #mFontLineSpacing}
-	 * @param startColumn
-	 *            the run offset in columns
-	 * @param runWidthColumns
-	 *            the run width in columns - this is computed from wcwidth() and may not be what the font measures to
-	 * @param text
-	 *            the java char array to render text from
-	 * @param startCharIndex
-	 *            index into the text array where to start
-	 * @param runWidthChars
-	 *            number of java characters from the text array to render
-	 * @param cursor
-	 *            true if rendering a cursor or selection
-	 * @param textStyle
-	 *            the background, foreground and effect encoded using {@link TextStyle}
-	 * @param reverseVideo
-	 *            if the screen is rendered with the global reverse video flag set
-	 */
-	private void drawTextRun(Canvas canvas, char[] text, int[] palette, float y, int startColumn, int runWidthColumns, int startCharIndex, int runWidthChars,
-			float mes, boolean cursor, int textStyle, boolean reverseVideo) {
-		int foreColor = TextStyle.decodeForeColor(textStyle);
-		int backColor = TextStyle.decodeBackColor(textStyle);
-		final int effect = TextStyle.decodeEffect(textStyle);
-		float left = startColumn * mFontWidth;
-		float right = left + runWidthColumns * mFontWidth;
-
-		mes = mes / mFontWidth;
-		boolean savedMatrix = false;
-		if (Math.abs(mes - runWidthColumns) > 0.01) {
-			canvas.save();
-			canvas.scale(runWidthColumns / mes, 1.f);
-			left *= mes / runWidthColumns;
-			right *= mes / runWidthColumns;
-			savedMatrix = true;
-		}
-
-		// Reverse video here if _one and only one_ of the reverse flags are set:
-		boolean reverseVideoHere = reverseVideo ^ (effect & (TextStyle.CHARACTER_ATTRIBUTE_INVERSE)) != 0;
-		// Switch if _one and only one_ of reverse video and cursor is set:
-		if (reverseVideoHere ^ cursor) {
-			int tmp = foreColor;
-			foreColor = backColor;
-			backColor = tmp;
-		}
-
-		if (backColor != TextStyle.COLOR_INDEX_BACKGROUND) {
-			// Only draw non-default background.
-			mTextPaint.setColor(palette[backColor]);
-			canvas.drawRect(left, y - mFontLineSpacingAndAscent + mFontAscent, right, y, mTextPaint);
-		}
-
-		if ((effect & TextStyle.CHARACTER_ATTRIBUTE_INVISIBLE) == 0) {
-			// Treat blink as bold:
-			final boolean bold = (effect & (TextStyle.CHARACTER_ATTRIBUTE_BOLD | TextStyle.CHARACTER_ATTRIBUTE_BLINK)) != 0;
-			final boolean underline = (effect & TextStyle.CHARACTER_ATTRIBUTE_UNDERLINE) != 0;
-			final boolean italic = (effect & TextStyle.CHARACTER_ATTRIBUTE_ITALIC) != 0;
-			final boolean strikeThrough = (effect & TextStyle.CHARACTER_ATTRIBUTE_STRIKETHROUGH) != 0;
-			final boolean dim = (effect & TextStyle.CHARACTER_ATTRIBUTE_DIM) != 0;
-
-			// Let bold have bright colors if applicable (one of the first 8):
-			final int actualForeColor = foreColor + (bold && foreColor < 8 ? 8 : 0);
-
-			int foreColorARGB = palette[actualForeColor];
-			if (dim) {
-				int red = (0xFF & (foreColorARGB >> 16));
-				int green = (0xFF & (foreColorARGB >> 8));
-				int blue = (0xFF & foreColorARGB);
-				// Dim color handling used by libvte which in turn took it from xterm
-				// (https://bug735245.bugzilla-attachments.gnome.org/attachment.cgi?id=284267):
-				red = red * 2 / 3;
-				green = green * 2 / 3;
-				blue = blue * 2 / 3;
-				foreColorARGB = 0xFF000000 + (red << 16) + (green << 8) + blue;
-			}
-
-			mTextPaint.setFakeBoldText(bold);
-			mTextPaint.setUnderlineText(underline);
-			mTextPaint.setTextSkewX(italic ? -0.35f : 0.f);
-			mTextPaint.setStrikeThruText(strikeThrough);
-			mTextPaint.setColor(foreColorARGB);
-
-			// The text alignment is the default Paint.Align.LEFT.
-			canvas.drawText(text, startCharIndex, runWidthChars, left, y - mFontLineSpacingAndAscent, mTextPaint);
-		}
-
-		if (savedMatrix) canvas.restore();
-	}
-}

app/src/main/java/com/termux/view/TerminalView.java

@@ -1,995 +0,0 @@
-package com.termux.view;
-
-import android.annotation.SuppressLint;
-import android.annotation.TargetApi;
-import android.content.ClipData;
-import android.content.ClipboardManager;
-import android.content.Context;
-import android.content.res.TypedArray;
-import android.graphics.Canvas;
-import android.graphics.Rect;
-import android.graphics.Typeface;
-import android.graphics.drawable.BitmapDrawable;
-import android.media.AudioManager;
-import android.os.Build;
-import android.text.InputType;
-import android.text.TextUtils;
-import android.util.AttributeSet;
-import android.util.Log;
-import android.view.ActionMode;
-import android.view.HapticFeedbackConstants;
-import android.view.InputDevice;
-import android.view.KeyCharacterMap;
-import android.view.KeyEvent;
-import android.view.Menu;
-import android.view.MenuItem;
-import android.view.MotionEvent;
-import android.view.View;
-import android.view.inputmethod.BaseInputConnection;
-import android.view.inputmethod.EditorInfo;
-import android.view.inputmethod.InputConnection;
-import android.widget.Scroller;
-
-import com.termux.R;
-import com.termux.terminal.EmulatorDebug;
-import com.termux.terminal.KeyHandler;
-import com.termux.terminal.TerminalBuffer;
-import com.termux.terminal.TerminalColors;
-import com.termux.terminal.TerminalEmulator;
-import com.termux.terminal.TerminalSession;
-
-import java.io.File;
-import java.io.FileInputStream;
-import java.io.InputStream;
-import java.util.Properties;
-
-/** View displaying and interacting with a {@link TerminalSession}. */
-public final class TerminalView extends View {
-
-	/** Log view key and IME events. */
-	private static final boolean LOG_KEY_EVENTS = false;
-
-	/** The currently displayed terminal session, whose emulator is {@link #mEmulator}. */
-	TerminalSession mTermSession;
-	/** Our terminal emulator whose session is {@link #mTermSession}. */
-	TerminalEmulator mEmulator;
-
-	TerminalRenderer mRenderer;
-
-	TerminalKeyListener mOnKeyListener;
-
-	/** The top row of text to display. Ranges from -activeTranscriptRows to 0. */
-	int mTopRow;
-
-	/** Keeping track of the special keys acting as Ctrl and Fn for the soft keyboard and other hardware keys. */
-	boolean mVirtualControlKeyDown, mVirtualFnKeyDown;
-
-	boolean mIsSelectingText = false, mIsDraggingLeftSelection, mInitialTextSelection;
-	int mSelX1 = -1, mSelX2 = -1, mSelY1 = -1, mSelY2 = -1;
-	float mSelectionDownX, mSelectionDownY;
-	private ActionMode mActionMode;
-	private BitmapDrawable mLeftSelectionHandle, mRightSelectionHandle;
-
-	float mScaleFactor = 1.f;
-	final GestureAndScaleRecognizer mGestureRecognizer;
-
-	/** Keep track of where mouse touch event started which we report as mouse scroll. */
-	private int mMouseScrollStartX = -1, mMouseScrollStartY = -1;
-	/** Keep track of the time when a touch event leading to sending mouse scroll events started. */
-	private long mMouseStartDownTime = -1;
-
-	final Scroller mScroller;
-
-	/** What was left in from scrolling movement. */
-	float mScrollRemainder;
-
-	/** If non-zero, this is the last unicode code point received if that was a combining character. */
-	int mCombiningAccent;
-
-	public TerminalView(Context context, AttributeSet attributes) { // NO_UCD (unused code)
-		super(context, attributes);
-		mGestureRecognizer = new GestureAndScaleRecognizer(context, new GestureAndScaleRecognizer.Listener() {
-
-			@Override
-			public boolean onUp(MotionEvent e) {
-				mScrollRemainder = 0.0f;
-				if (mEmulator != null && mEmulator.isMouseTrackingActive() && !mIsSelectingText) {
-					// Quick event processing when mouse tracking is active - do not wait for check of double tapping
-					// for zooming.
-					sendMouseEventCode(e, TerminalEmulator.MOUSE_LEFT_BUTTON, true);
-					sendMouseEventCode(e, TerminalEmulator.MOUSE_LEFT_BUTTON, false);
-					return true;
-				}
-				return false;
-			}
-
-			@Override
-			public boolean onSingleTapUp(MotionEvent e) {
-				if (mEmulator == null) return true;
-				if (mIsSelectingText) { toggleSelectingText(null); return true; }
-				requestFocus();
-				if (!mEmulator.isMouseTrackingActive()) {
-					if (!e.isFromSource(InputDevice.SOURCE_MOUSE)) {
-						mOnKeyListener.onSingleTapUp(e);
-						return true;
-					}
-				}
-				return false;
-			}
-
-			@Override
-			public boolean onScroll(MotionEvent e2, float distanceX, float distanceY) {
-				if (mEmulator == null || mIsSelectingText) return true;
-				if (mEmulator.isMouseTrackingActive() && e2.isFromSource(InputDevice.SOURCE_MOUSE)) {
-					// If moving with mouse pointer while pressing button, report that instead of scroll.
-					// This means that we never report moving with button press-events for touch input,
-					// since we cannot just start sending these events without a starting press event,
-					// which we do not do for touch input, only mouse in onTouchEvent().
-					sendMouseEventCode(e2, TerminalEmulator.MOUSE_LEFT_BUTTON_MOVED, true);
-				} else {
-					distanceY += mScrollRemainder;
-					int deltaRows = (int) (distanceY / mRenderer.mFontLineSpacing);
-					mScrollRemainder = distanceY - deltaRows * mRenderer.mFontLineSpacing;
-					doScroll(e2, deltaRows);
-				}
-				return true;
-			}
-
-			@Override
-			public boolean onScale(float focusX, float focusY, float scale) {
-				if (mEmulator == null || mIsSelectingText) return true;
-				mScaleFactor *= scale;
-				mScaleFactor = mOnKeyListener.onScale(mScaleFactor);
-				return true;
-			}
-
-			@Override
-			public boolean onFling(final MotionEvent e2, float velocityX, float velocityY) {
-				if (mEmulator == null || mIsSelectingText) return true;
-				// Do not start scrolling until last fling has been taken care of:
-				if (!mScroller.isFinished()) return true;
-
-				final boolean mouseTrackingAtStartOfFling = mEmulator.isMouseTrackingActive();
-				float SCALE = 0.25f;
-				if (mouseTrackingAtStartOfFling) {
-					mScroller.fling(0, 0, 0, -(int) (velocityY * SCALE), 0, 0, -mEmulator.mRows / 2, mEmulator.mRows / 2);
-				} else {
-					mScroller.fling(0, mTopRow, 0, -(int) (velocityY * SCALE), 0, 0, -mEmulator.getScreen().getActiveTranscriptRows(), 0);
-				}
-
-				post(new Runnable() {
-					private int mLastY = 0;
-
-					@Override
-					public void run() {
-						if (mouseTrackingAtStartOfFling != mEmulator.isMouseTrackingActive()) {
-							mScroller.abortAnimation();
-							return;
-						}
-						if (mScroller.isFinished()) return;
-						boolean more = mScroller.computeScrollOffset();
-						int newY = mScroller.getCurrY();
-						int diff = mouseTrackingAtStartOfFling ? (newY - mLastY) : (newY - mTopRow);
-						doScroll(e2, diff);
-						mLastY = newY;
-						if (more) post(this);
-					}
-				});
-
-				return true;
-			}
-
-			@Override
-			public boolean onDown(float x, float y) {
-				return false;
-			}
-
-			@Override
-			public boolean onDoubleTap(MotionEvent e) {
-				// Do not treat is as a single confirmed tap - it may be followed by zoom.
-				return false;
-			}
-
-			@Override
-			public void onLongPress(MotionEvent e) {
-				if (!mGestureRecognizer.isInProgress() && !mIsSelectingText) {
-					performHapticFeedback(HapticFeedbackConstants.LONG_PRESS);
-					toggleSelectingText(e);
-				}
-			}
-		});
-		mScroller = new Scroller(context);
-	}
-
-	/**
-	 * @param onKeyListener
-	 *            Listener for all kinds of key events, both hardware and IME (which makes it different from that
-	 *            available with {@link View#setOnKeyListener(OnKeyListener)}.
-	 */
-	public void setOnKeyListener(TerminalKeyListener onKeyListener) {
-		this.mOnKeyListener = onKeyListener;
-	}
-
-	/**
-	 * Attach a {@link TerminalSession} to this view.
-	 * 
-	 * @param session
-	 *            The {@link TerminalSession} this view will be displaying.
-	 */
-	public boolean attachSession(TerminalSession session) {
-		if (session == mTermSession) return false;
-		mTopRow = 0;
-
-		mTermSession = session;
-		mEmulator = null;
-		mCombiningAccent = 0;
-
-		updateSize();
-
-		// Wait with enabling the scrollbar until we have a terminal to get scroll position from.
-		setVerticalScrollBarEnabled(true);
-
-		return true;
-	}
-
-	@Override
-	public InputConnection onCreateInputConnection(EditorInfo outAttrs) {
-		// Make the IME run in a limited "generate key events" mode.
-		//
-		// If using just "TYPE_NULL", there is a problem with the "Google Pinyin Input" being in
-		// word mode when used with the "En" tab available when the "Show English keyboard" option
-		// is enabled - see https://github.com/termux/termux-packages/issues/25.
-		//
-		// Adding TYPE_TEXT_FLAG_NO_SUGGESTIONS fixes Pinyin Input, put causes Swype to be put in
-		// word mode... Using TYPE_TEXT_VARIATION_VISIBLE_PASSWORD fixes that.
-		//
-		// So a bit messy. If this gets too messy it's perhaps best resolved by reverting back to just
-		// "TYPE_NULL" and let the Pinyin Input english keyboard be in word mode.
-		outAttrs.inputType = InputType.TYPE_TEXT_FLAG_NO_SUGGESTIONS | InputType.TYPE_TEXT_VARIATION_VISIBLE_PASSWORD;
-
-		// Let part of the application show behind when in landscape:
-		outAttrs.imeOptions |= EditorInfo.IME_FLAG_NO_FULLSCREEN;
-
-		return new BaseInputConnection(this, true) {
-
-			@Override
-			public boolean beginBatchEdit() {
-				if (LOG_KEY_EVENTS) Log.i(EmulatorDebug.LOG_TAG, "IME: beginBatchEdit()");
-				return true;
-			}
-
-			@Override
-			public boolean clearMetaKeyStates(int states) {
-				if (LOG_KEY_EVENTS) Log.i(EmulatorDebug.LOG_TAG, "IME: clearMetaKeyStates(" + states + ")");
-				return true;
-			}
-
-			@Override
-			public boolean endBatchEdit() {
-				if (LOG_KEY_EVENTS) Log.i(EmulatorDebug.LOG_TAG, "IME: endBatchEdit()");
-				return false;
-			}
-
-			@Override
-			public boolean finishComposingText() {
-				if (LOG_KEY_EVENTS) Log.i(EmulatorDebug.LOG_TAG, "IME: finishComposingText()");
-				return true;
-			}
-
-			@Override
-			public int getCursorCapsMode(int reqModes) {
-				if (LOG_KEY_EVENTS) Log.i(EmulatorDebug.LOG_TAG, "IME: getCursorCapsMode(" + reqModes + ")");
-				int mode = 0;
-				if ((reqModes & TextUtils.CAP_MODE_CHARACTERS) != 0) {
-					mode |= TextUtils.CAP_MODE_CHARACTERS;
-				}
-				return mode;
-			}
-
-			@Override
-			public CharSequence getTextAfterCursor(int n, int flags) {
-				return "";
-			}
-
-			@Override
-			public CharSequence getTextBeforeCursor(int n, int flags) {
-				return "";
-			}
-
-			@Override
-			public boolean commitText(CharSequence text, int newCursorPosition) {
-				if (LOG_KEY_EVENTS) Log.i(EmulatorDebug.LOG_TAG, "IME: commitText(\"" + text + "\", " + newCursorPosition + ")");
-				if (mEmulator == null) return true;
-				final int textLengthInChars = text.length();
-				for (int i = 0; i < textLengthInChars; i++) {
-					char firstChar = text.charAt(i);
-					int codePoint;
-					if (Character.isHighSurrogate(firstChar)) {
-						if (++i < textLengthInChars) {
-							codePoint = Character.toCodePoint(firstChar, text.charAt(i));
-						} else {
-							// At end of string, with no low surrogate following the high:
-							codePoint = TerminalEmulator.UNICODE_REPLACEMENT_CHAR;
-						}
-					} else {
-						codePoint = firstChar;
-					}
-					inputCodePoint(codePoint, false, false);
-				}
-				return true;
-			}
-
-			@Override
-			public boolean deleteSurroundingText(int leftLength, int rightLength) {
-				if (LOG_KEY_EVENTS) Log.i(EmulatorDebug.LOG_TAG, "IME: deleteSurroundingText(" + leftLength + ", " + rightLength + ")");
-
-				// Swype keyboard sometimes(?) sends this on backspace:
-				if (leftLength == 0 && rightLength == 0) leftLength = 1;
-
-				for (int i = 0; i < leftLength; i++)
-					sendKeyEvent(new KeyEvent(KeyEvent.ACTION_DOWN, KeyEvent.KEYCODE_DEL));
-				return true;
-			}
-
-		};
-	}
-
-	@Override
-	protected int computeVerticalScrollRange() {
-		return mEmulator == null ? 1 : mEmulator.getScreen().getActiveRows();
-	}
-
-	@Override
-	protected int computeVerticalScrollExtent() {
-		return mEmulator == null ? 1 : mEmulator.mRows;
-	}
-
-	@Override
-	protected int computeVerticalScrollOffset() {
-		return mEmulator == null ? 1 : mEmulator.getScreen().getActiveRows() + mTopRow - mEmulator.mRows;
-	}
-
-	public void onScreenUpdated() {
-		if (mEmulator == null) return;
-
-		boolean skipScrolling = false;
-		if (mIsSelectingText) {
-			// Do not scroll when selecting text.
-			int rowsInHistory = mEmulator.getScreen().getActiveTranscriptRows();
-			int rowShift = mEmulator.getScrollCounter();
-			if (-mTopRow + rowShift > rowsInHistory) {
-				// .. unless we're hitting the end of history transcript, in which
-				// case we abort text selection and scroll to end.
-				toggleSelectingText(null);
-			} else {
-				skipScrolling = true;
-				mTopRow -= rowShift;
-				mSelY1 -= rowShift;
-				mSelY2 -= rowShift;
-			}
-		}
-
-		if (!skipScrolling && mTopRow != 0) {
-			// Scroll down if not already there.
-			if (mTopRow < -3) {
-				// Awaken scroll bars only if scrolling a noticeable amount
-				// - we do not want visible scroll bars during normal typing
-				// of one row at a time.
-				awakenScrollBars();
-			}
-			mTopRow = 0;
-		}
-
-		mEmulator.clearScrollCounter();
-
-		invalidate();
-	}
-
-	/**
-	 * Sets the text size, which in turn sets the number of rows and columns.
-	 * 
-	 * @param textSize
-	 *            the new font size, in density-independent pixels.
-	 */
-	public void setTextSize(int textSize) {
-		mRenderer = new TerminalRenderer(textSize, mRenderer == null ? Typeface.MONOSPACE : mRenderer.mTypeface);
-		updateSize();
-	}
-
-	@Override
-	public boolean onCheckIsTextEditor() {
-		return true;
-	}
-
-	@Override
-	public boolean isOpaque() {
-		return true;
-	}
-
-	/** Send a single mouse event code to the terminal. */
-	void sendMouseEventCode(MotionEvent e, int button, boolean pressed) {
-		int x = (int) (e.getX() / mRenderer.mFontWidth) + 1;
-		int y = (int) ((e.getY() - mRenderer.mFontLineSpacingAndAscent) / mRenderer.mFontLineSpacing) + 1;
-		if (pressed && (button == TerminalEmulator.MOUSE_WHEELDOWN_BUTTON || button == TerminalEmulator.MOUSE_WHEELUP_BUTTON)) {
-			if (mMouseStartDownTime == e.getDownTime()) {
-				x = mMouseScrollStartX;
-				y = mMouseScrollStartY;
-			} else {
-				mMouseStartDownTime = e.getDownTime();
-				mMouseScrollStartX = x;
-				mMouseScrollStartY = y;
-			}
-		}
-		mEmulator.sendMouseEvent(button, x, y, pressed);
-	}
-
-	/** Perform a scroll, either from dragging the screen or by scrolling a mouse wheel. */
-	void doScroll(MotionEvent event, int rowsDown) {
-		boolean up = rowsDown < 0;
-		int amount = Math.abs(rowsDown);
-		for (int i = 0; i < amount; i++) {
-			if (mEmulator.isMouseTrackingActive()) {
-				sendMouseEventCode(event, up ? TerminalEmulator.MOUSE_WHEELUP_BUTTON : TerminalEmulator.MOUSE_WHEELDOWN_BUTTON, true);
-			} else if (mEmulator.isAlternateBufferActive()) {
-				// Send up and down key events for scrolling, which is what some terminals do to make scroll work in
-				// e.g. less, which shifts to the alt screen without mouse handling.
-				handleKeyCode(up ? KeyEvent.KEYCODE_DPAD_UP : KeyEvent.KEYCODE_DPAD_DOWN, 0);
-			} else {
-				mTopRow = Math.min(0, Math.max(-(mEmulator.getScreen().getActiveTranscriptRows()), mTopRow + (up ? -1 : 1)));
-				if (!awakenScrollBars()) invalidate();
-			}
-		}
-	}
-
-	/** Overriding {@link View#onGenericMotionEvent(MotionEvent)}. */
-	@Override
-	public boolean onGenericMotionEvent(MotionEvent event) {
-		if (mEmulator != null && event.isFromSource(InputDevice.SOURCE_MOUSE) && event.getAction() == MotionEvent.ACTION_SCROLL) {
-			// Handle mouse wheel scrolling.
-			boolean up = event.getAxisValue(MotionEvent.AXIS_VSCROLL) > 0.0f;
-			doScroll(event, up ? -3 : 3);
-			return true;
-		}
-		return false;
-	}
-
-	@SuppressLint("ClickableViewAccessibility")
-	@Override
-	@TargetApi(23)
-	public boolean onTouchEvent(MotionEvent ev) {
-		if (mEmulator == null) return true;
-		final int action = ev.getAction();
-
-		if (mIsSelectingText) {
-			int cy = (int) (ev.getY() / mRenderer.mFontLineSpacing) + mTopRow;
-			int cx = (int) (ev.getX() / mRenderer.mFontWidth);
-
-			switch (action) {
-			case MotionEvent.ACTION_UP:
-				mInitialTextSelection = false;
-				break;
-			case MotionEvent.ACTION_DOWN:
-				int distanceFromSel1 = Math.abs(cx-mSelX1) + Math.abs(cy-mSelY1);
-				int distanceFromSel2 = Math.abs(cx-mSelX2) + Math.abs(cy-mSelY2);
-				mIsDraggingLeftSelection = distanceFromSel1 <= distanceFromSel2;
-				mSelectionDownX = ev.getX();
-				mSelectionDownY = ev.getY();
-				break;
-			case MotionEvent.ACTION_MOVE:
-				if (mInitialTextSelection) break;
-				float deltaX = ev.getX() - mSelectionDownX;
-				float deltaY = ev.getY() - mSelectionDownY;
-				int deltaCols = (int) Math.ceil(deltaX / mRenderer.mFontWidth);
-				int deltaRows = (int) Math.ceil(deltaY / mRenderer.mFontLineSpacing);
-				mSelectionDownX += deltaCols * mRenderer.mFontWidth;
-				mSelectionDownY += deltaRows * mRenderer.mFontLineSpacing;
-				if (mIsDraggingLeftSelection) {
-					mSelX1 += deltaCols;
-					mSelY1 += deltaRows;
-				} else {
-					mSelX2 += deltaCols;
-					mSelY2 += deltaRows;
-				}
-
-				mSelX1 = Math.min(mEmulator.mColumns, Math.max(0, mSelX1));
-				mSelX2 = Math.min(mEmulator.mColumns, Math.max(0, mSelX2));
-
-				if (mSelY1 == mSelY2 && mSelX1 > mSelX2 || mSelY1 > mSelY2) {
-					// Switch handles.
-					mIsDraggingLeftSelection = !mIsDraggingLeftSelection;
-					int tmpX1 = mSelX1, tmpY1 = mSelY1;
-					mSelX1 = mSelX2; mSelY1 = mSelY2;
-					mSelX2 = tmpX1; mSelY2 = tmpY1;
-				}
-
-				if (Build.VERSION.SDK_INT >= Build.VERSION_CODES.M) mActionMode.invalidateContentRect();
-				invalidate();
-				break;
-			default:
-				break;
-			}
-			mGestureRecognizer.onTouchEvent(ev);
-			return true;
-		} else if (ev.isFromSource(InputDevice.SOURCE_MOUSE)) {
-			if (ev.isButtonPressed(MotionEvent.BUTTON_SECONDARY)) {
-				if (action == MotionEvent.ACTION_DOWN) showContextMenu();
-				return true;
-			} else if (ev.isButtonPressed(MotionEvent.BUTTON_TERTIARY)) {
-				ClipboardManager clipboard = (ClipboardManager) getContext().getSystemService(Context.CLIPBOARD_SERVICE);
-				ClipData clipData = clipboard.getPrimaryClip();
-				if (clipData != null) {
-					CharSequence paste = clipData.getItemAt(0).coerceToText(getContext());
-					if (!TextUtils.isEmpty(paste)) mEmulator.paste(paste.toString());
-				}
-			} else if (mEmulator.isMouseTrackingActive()) { // BUTTON_PRIMARY.
-				switch (ev.getAction()) {
-					case MotionEvent.ACTION_DOWN:
-					case MotionEvent.ACTION_UP:
-						sendMouseEventCode(ev, TerminalEmulator.MOUSE_LEFT_BUTTON, ev.getAction() == MotionEvent.ACTION_DOWN);
-						break;
-					case MotionEvent.ACTION_MOVE:
-						sendMouseEventCode(ev, TerminalEmulator.MOUSE_LEFT_BUTTON_MOVED, true);
-						break;
-				}
-				return true;
-			}
-		}
-
-		mGestureRecognizer.onTouchEvent(ev);
-		return true;
-	}
-
-	@Override
-	public boolean onKeyPreIme(int keyCode, KeyEvent event) {
-		if (LOG_KEY_EVENTS) Log.i(EmulatorDebug.LOG_TAG, "onKeyPreIme(keyCode=" + keyCode + ", event=" + event + ")");
-		if (keyCode == KeyEvent.KEYCODE_BACK) {
-			if (mIsSelectingText) {
-				toggleSelectingText(null);
-				return true;
-			} else if (mOnKeyListener.shouldBackButtonBeMappedToEscape()) {
-				// Intercept back button to treat it as escape:
-				switch (event.getAction()) {
-					case KeyEvent.ACTION_DOWN:
-						return onKeyDown(keyCode, event);
-					case KeyEvent.ACTION_UP:
-						return onKeyUp(keyCode, event);
-				}
-			}
-		}
-		return super.onKeyPreIme(keyCode, event);
-	}
-
-	@Override
-	public boolean onKeyDown(int keyCode, KeyEvent event) {
-		if (LOG_KEY_EVENTS) Log.i(EmulatorDebug.LOG_TAG, "onKeyDown(keyCode=" + keyCode + ", isSystem()=" + event.isSystem() + ", event=" + event + ")");
-		if (mEmulator == null) return true;
-
-		int metaState = event.getMetaState();
-		boolean controlDownFromEvent = event.isCtrlPressed();
-		boolean leftAltDownFromEvent = (metaState & KeyEvent.META_ALT_LEFT_ON) != 0;
-		boolean rightAltDownFromEvent = (metaState & KeyEvent.META_ALT_RIGHT_ON) != 0;
-
-		if (handleVirtualKeys(keyCode, event, true)) {
-			invalidate();
-			return true;
-		} else if (event.isSystem() && (!mOnKeyListener.shouldBackButtonBeMappedToEscape() || keyCode != KeyEvent.KEYCODE_BACK)) {
-			return super.onKeyDown(keyCode, event);
-		}
-
-		int keyMod = 0;
-		if (controlDownFromEvent) keyMod |= KeyHandler.KEYMOD_CTRL;
-		if (event.isAltPressed()) keyMod |= KeyHandler.KEYMOD_ALT;
-		if (event.isShiftPressed()) keyMod |= KeyHandler.KEYMOD_SHIFT;
-		if (handleKeyCode(keyCode, keyMod)) {
-			if (LOG_KEY_EVENTS) Log.i(EmulatorDebug.LOG_TAG, "handleKeyCode() took key event");
-			return true;
-		}
-
-		// Clear Ctrl since we handle that ourselves:
-		int bitsToClear = KeyEvent.META_CTRL_MASK;
-		if (rightAltDownFromEvent) {
-			// Let right Alt/Alt Gr be used to compose characters.
-		} else {
-			// Use left alt to send to terminal (e.g. Left Alt+B to jump back a word), so remove:
-			bitsToClear |= KeyEvent.META_ALT_ON | KeyEvent.META_ALT_LEFT_ON;
-		}
-		int effectiveMetaState = event.getMetaState() & ~bitsToClear;
-
-		int result = event.getUnicodeChar(effectiveMetaState);
-		if (LOG_KEY_EVENTS) Log.i(EmulatorDebug.LOG_TAG, "KeyEvent#getUnicodeChar(" + effectiveMetaState + ") returned: " + result);
-		if (result == 0) {
-			return true;
-		}
-
-		int oldCombiningAccent = mCombiningAccent;
-		if ((result & KeyCharacterMap.COMBINING_ACCENT) != 0) {
-			// If entered combining accent previously, write it out:
-			if (mCombiningAccent != 0) inputCodePoint(mCombiningAccent, controlDownFromEvent, leftAltDownFromEvent);
-			mCombiningAccent = result & KeyCharacterMap.COMBINING_ACCENT_MASK;
-		} else {
-			if (mCombiningAccent != 0) {
-				int combinedChar = KeyCharacterMap.getDeadChar(mCombiningAccent, result);
-				if (combinedChar > 0) result = combinedChar;
-				mCombiningAccent = 0;
-			}
-			inputCodePoint(result, controlDownFromEvent, leftAltDownFromEvent);
-		}
-
-		if (mCombiningAccent != oldCombiningAccent) invalidate();
-
-		return true;
-	}
-
-	void inputCodePoint(int codePoint, boolean controlDownFromEvent, boolean leftAltDownFromEvent) {
-		if (LOG_KEY_EVENTS) {
-			Log.i(EmulatorDebug.LOG_TAG, "inputCodePoint(codePoint=" + codePoint + ", controlDownFromEvent=" + controlDownFromEvent + ", leftAltDownFromEvent="
-					+ leftAltDownFromEvent + ")");
-		}
-
-		int resultingKeyCode = -1; // Set if virtual key causes this to be translated to key event.
-		if (controlDownFromEvent || mVirtualControlKeyDown) {
-			if (codePoint >= 'a' && codePoint <= 'z') {
-				codePoint = codePoint - 'a' + 1;
-			} else if (codePoint >= 'A' && codePoint <= 'Z') {
-				codePoint = codePoint - 'A' + 1;
-			} else if (codePoint == ' ' || codePoint == '2') {
-				codePoint = 0;
-			} else if (codePoint == '[' || codePoint == '3') {
-				codePoint = 27; // ^[ (Esc)
-			} else if (codePoint == '\\' || codePoint == '4') {
-				codePoint = 28;
-			} else if (codePoint == ']' || codePoint == '5') {
-				codePoint = 29;
-			} else if (codePoint == '^' || codePoint == '6') {
-				codePoint = 30; // control-^
-			} else if (codePoint == '_' || codePoint == '7') {
-				codePoint = 31;
-			} else if (codePoint == '8') {
-				codePoint = 127; // DEL
-			} else if (codePoint == '9') {
-				resultingKeyCode = KeyEvent.KEYCODE_F11;
-			} else if (codePoint == '0') {
-				resultingKeyCode = KeyEvent.KEYCODE_F12;
-			}
-		} else if (mVirtualFnKeyDown) {
-			if (codePoint == 'w' || codePoint == 'W') {
-				resultingKeyCode = KeyEvent.KEYCODE_DPAD_UP;
-			} else if (codePoint == 'a' || codePoint == 'A') {
-				resultingKeyCode = KeyEvent.KEYCODE_DPAD_LEFT;
-			} else if (codePoint == 's' || codePoint == 'S') {
-				resultingKeyCode = KeyEvent.KEYCODE_DPAD_DOWN;
-			} else if (codePoint == 'd' || codePoint == 'D') {
-				resultingKeyCode = KeyEvent.KEYCODE_DPAD_RIGHT;
-			} else if (codePoint == 'p' || codePoint == 'P') {
-				resultingKeyCode = KeyEvent.KEYCODE_PAGE_UP;
-			} else if (codePoint == 'n' || codePoint == 'N') {
-				resultingKeyCode = KeyEvent.KEYCODE_PAGE_DOWN;
-			} else if (codePoint == 't' || codePoint == 'T') {
-				resultingKeyCode = KeyEvent.KEYCODE_TAB;
-			} else if (codePoint == 'l' || codePoint == 'L') {
-				codePoint = '|';
-			} else if (codePoint == 'u' || codePoint == 'U') {
-				codePoint = '_';
-			} else if (codePoint == 'e' || codePoint == 'E') {
-				codePoint = 27; // ^[ (Esc)
-			} else if (codePoint == '.') {
-				codePoint = 28; // ^\
-			} else if (codePoint > '0' && codePoint <= '9') {
-				// F1-F9
-				resultingKeyCode = (codePoint - '1') + KeyEvent.KEYCODE_F1;
-			} else if (codePoint == '0') {
-				resultingKeyCode = KeyEvent.KEYCODE_F10;
-			} else if (codePoint == 'i' || codePoint == 'I') {
-				resultingKeyCode = KeyEvent.KEYCODE_INSERT;
-			} else if (codePoint == 'x' || codePoint == 'X') {
-				resultingKeyCode = KeyEvent.KEYCODE_FORWARD_DEL;
-			} else if (codePoint == 'h' || codePoint == 'H') {
-				resultingKeyCode = KeyEvent.KEYCODE_MOVE_HOME;
-			} else if (codePoint == 'f' || codePoint == 'F') {
-				// As left alt+f, jumping forward in readline:
-				codePoint = 'f';
-				leftAltDownFromEvent = true;
-			} else if (codePoint == 'b' || codePoint == 'B') {
-				// As left alt+b, jumping forward in readline:
-				codePoint = 'b';
-				leftAltDownFromEvent = true;
-			} else if (codePoint == 'v' || codePoint == 'V') {
-				codePoint = -1;
-				AudioManager audio = (AudioManager) getContext().getSystemService(Context.AUDIO_SERVICE);
-				audio.adjustSuggestedStreamVolume(AudioManager.ADJUST_SAME, AudioManager.USE_DEFAULT_STREAM_TYPE, AudioManager.FLAG_SHOW_UI);
-			}
-		}
-
-		if (codePoint > -1) {
-			if (resultingKeyCode > -1) {
-				handleKeyCode(resultingKeyCode, 0);
-			} else {
-				// Work around bluetooth keyboards sending funny unicode characters instead
-				// of the more normal ones from ASCII that terminal programs expect - the
-				// desire to input the original characters should be low.
-				switch (codePoint) {
-					case 0x02DC: // SMALL TILDE.
-						codePoint = 0x007E; // TILDE (~).
-						break;
-					case 0x02CB: // MODIFIER LETTER GRAVE ACCENT.
-						codePoint = 0x0060; // GRAVE ACCENT (`).
-						break;
-					case 0x02C6: // MODIFIER LETTER CIRCUMFLEX ACCENT.
-						codePoint = 0x005E; // CIRCUMFLEX ACCENT (^).
-						break;
-				}
-
-				// If left alt, send escape before the code point to make e.g. Alt+B and Alt+F work in readline:
-				mTermSession.writeCodePoint(leftAltDownFromEvent, codePoint);
-			}
-		}
-	}
-
-	/** Input the specified keyCode if applicable and return if the input was consumed. */
-	public boolean handleKeyCode(int keyCode, int keyMod) {
-		TerminalEmulator term = mTermSession.getEmulator();
-		String code = KeyHandler.getCode(keyCode, keyMod, term.isCursorKeysApplicationMode(), term.isKeypadApplicationMode());
-		if (code == null) return false;
-		mTermSession.write(code);
-		return true;
-	}
-
-	/**
-	 * Called when a key is released in the view.
-	 * 
-	 * @param keyCode
-	 *            The keycode of the key which was released.
-	 * @param event
-	 *            A {@link KeyEvent} describing the event.
-	 * @return Whether the event was handled.
-	 */
-	@Override
-	public boolean onKeyUp(int keyCode, KeyEvent event) {
-		if (LOG_KEY_EVENTS) Log.i(EmulatorDebug.LOG_TAG, "onKeyUp(keyCode=" + keyCode + ", event=" + event + ")");
-		if (mEmulator == null) return true;
-
-		if (handleVirtualKeys(keyCode, event, false)) {
-			invalidate();
-			return true;
-		} else if (event.isSystem()) {
-			// Let system key events through.
-			return super.onKeyUp(keyCode, event);
-		}
-
-		return true;
-	}
-
-	/** Handle dedicated volume buttons as virtual keys if applicable. */
-	private boolean handleVirtualKeys(int keyCode, KeyEvent event, boolean down) {
-		InputDevice inputDevice = event.getDevice();
-		if (inputDevice != null && inputDevice.getKeyboardType() == InputDevice.KEYBOARD_TYPE_ALPHABETIC) {
-			// Do not steal dedicated buttons from a full external keyboard.
-			return false;
-		} else if (keyCode == KeyEvent.KEYCODE_VOLUME_DOWN) {
-			if (LOG_KEY_EVENTS) Log.i(EmulatorDebug.LOG_TAG, "handleVirtualKeys(down=" + down + ") taking ctrl event");
-			mVirtualControlKeyDown = down;
-			return true;
-		} else if (keyCode == KeyEvent.KEYCODE_VOLUME_UP) {
-			if (LOG_KEY_EVENTS) Log.i(EmulatorDebug.LOG_TAG, "handleVirtualKeys(down=" + down + ") taking Fn event");
-			mVirtualFnKeyDown = down;
-			return true;
-		}
-		return false;
-	}
-
-	public void checkForFontAndColors() {
-		try {
-            // Hard-coded paths since this file is used also in Termux:Float.
-            @SuppressLint("SdCardPath") File fontFile = new File("/data/data/com.termux/files/home/.termux/font.ttf");
-            @SuppressLint("SdCardPath") File colorsFile = new File("/data/data/com.termux/files/home/.termux/colors.properties");
-
-			final Properties props = new Properties();
-			if (colorsFile.isFile()) {
-				try (InputStream in = new FileInputStream(colorsFile)) {
-					props.load(in);
-				}
-			}
-			TerminalColors.COLOR_SCHEME.updateWith(props);
-			if (mEmulator != null) mEmulator.mColors.reset();
-
-			final Typeface newTypeface = fontFile.exists() ? Typeface.createFromFile(fontFile) : Typeface.MONOSPACE;
-			mRenderer = new TerminalRenderer(mRenderer.mTextSize, newTypeface);
-			updateSize();
-
-			invalidate();
-		} catch (Exception e) {
-			Log.e(EmulatorDebug.LOG_TAG, "Error in checkForFontAndColors()", e);
-		}
-	}
-
-	/**
-	 * This is called during layout when the size of this view has changed. If you were just added to the view
-	 * hierarchy, you're called with the old values of 0.
-	 */
-	@Override
-	protected void onSizeChanged(int w, int h, int oldw, int oldh) {
-		updateSize();
-	}
-
-	/** Check if the terminal size in rows and columns should be updated. */
-	public void updateSize() {
-		int viewWidth = getWidth();
-		int viewHeight = getHeight();
-		if (viewWidth == 0 || viewHeight == 0 || mTermSession == null) return;
-
-		// Set to 80 and 24 if you want to enable vttest.
-		int newColumns = Math.max(8, (int) (viewWidth / mRenderer.mFontWidth));
-		int newRows = Math.max(8, (viewHeight - mRenderer.mFontLineSpacingAndAscent) / mRenderer.mFontLineSpacing);
-
-		if (mEmulator == null || (newColumns != mEmulator.mColumns || newRows != mEmulator.mRows)) {
-			mTermSession.updateSize(newColumns, newRows);
-			mEmulator = mTermSession.getEmulator();
-
-			mTopRow = 0;
-			scrollTo(0, 0);
-			invalidate();
-		}
-	}
-
-	@Override
-	protected void onDraw(Canvas canvas) {
-		if (mEmulator == null) {
-			canvas.drawColor(0XFF000000);
-		} else {
-			mRenderer.render(mEmulator, canvas, mTopRow, mSelY1, mSelY2, mSelX1, mSelX2);
-
-			if (mIsSelectingText) {
-				final int gripHandleWidth = mLeftSelectionHandle.getIntrinsicWidth();
-				final int gripHandleMargin = gripHandleWidth / 4; // See the png.
-
-				int right = Math.round((mSelX1) * mRenderer.mFontWidth) + gripHandleMargin;
-				int top = (mSelY1+1 - mTopRow)*mRenderer.mFontLineSpacing + mRenderer.mFontLineSpacingAndAscent;
-				mLeftSelectionHandle.setBounds(right - gripHandleWidth, top, right, top + mLeftSelectionHandle.getIntrinsicHeight());
-				mLeftSelectionHandle.draw(canvas);
-
-				int left = Math.round((mSelX2+1)*mRenderer.mFontWidth) - gripHandleMargin;
-				top = (mSelY2+1 - mTopRow) *mRenderer.mFontLineSpacing + mRenderer.mFontLineSpacingAndAscent;
-				mRightSelectionHandle.setBounds(left, top, left + gripHandleWidth, top + mRightSelectionHandle.getIntrinsicHeight());
-				mRightSelectionHandle.draw(canvas);
-			}
-		}
-	}
-
-	/** Toggle text selection mode in the view. */
-	@TargetApi(23)
-	public void toggleSelectingText(MotionEvent ev) {
-		mIsSelectingText = !mIsSelectingText;
-		mOnKeyListener.copyModeChanged(mIsSelectingText);
-
-		if (mIsSelectingText) {
-			if (mLeftSelectionHandle == null) {
-				mLeftSelectionHandle = (BitmapDrawable) getContext().getDrawable(R.drawable.text_select_handle_left_material);
-				mRightSelectionHandle = (BitmapDrawable) getContext().getDrawable(R.drawable.text_select_handle_right_material);
-			}
-
-			int cx = (int) (ev.getX() / mRenderer.mFontWidth);
-			final boolean eventFromMouse = ev.isFromSource(InputDevice.SOURCE_MOUSE);
-			// Offset for finger:
-			final int SELECT_TEXT_OFFSET_Y = eventFromMouse ? 0 : -40;
-			int cy = (int) ((ev.getY() + SELECT_TEXT_OFFSET_Y) / mRenderer.mFontLineSpacing) + mTopRow;
-
-			mSelX1 = mSelX2 = cx;
-			mSelY1 = mSelY2 = cy;
-
-			TerminalBuffer screen = mEmulator.getScreen();
-			if (!" ".equals(screen.getSelectedText(mSelX1, mSelY1, mSelX1, mSelY1))) {
-				// Selecting something other than whitespace. Expand to word.
-				while (mSelX1 > 0 && !"".equals(screen.getSelectedText(mSelX1-1, mSelY1, mSelX1-1, mSelY1))) {
-					mSelX1--;
-				}
-				while (mSelX2 < mEmulator.mColumns-1 && !"".equals(screen.getSelectedText(mSelX2+1, mSelY1, mSelX2+1, mSelY1))) {
-					mSelX2++;
-				}
-			}
-
-			mInitialTextSelection = true;
-			mIsDraggingLeftSelection = true;
-			mSelectionDownX = ev.getX();
-			mSelectionDownY = ev.getY();
-
-			final ActionMode.Callback callback = new ActionMode.Callback() {
-				@Override
-				public boolean onCreateActionMode(ActionMode mode, Menu menu) {
-					final int[] ACTION_MODE_ATTRS = { android.R.attr.actionModeCopyDrawable, android.R.attr.actionModePasteDrawable, };
-					TypedArray styledAttributes = getContext().obtainStyledAttributes(ACTION_MODE_ATTRS);
-                    try {
-                        int show = MenuItem.SHOW_AS_ACTION_ALWAYS | MenuItem.SHOW_AS_ACTION_WITH_TEXT;
-
-                        ClipboardManager clipboard = (ClipboardManager) getContext().getSystemService(Context.CLIPBOARD_SERVICE);
-                        menu.add(Menu.NONE, 1, Menu.NONE, R.string.copy_text).setIcon(styledAttributes.getResourceId(0, 0)).setShowAsAction(show);
-                        menu.add(Menu.NONE, 2, Menu.NONE, R.string.paste_text).setIcon(styledAttributes.getResourceId(1, 0)).setEnabled(clipboard.hasPrimaryClip()).setShowAsAction(show);
-                        menu.add(Menu.NONE, 3, Menu.NONE, R.string.text_selection_more);
-                    } finally {
-                        styledAttributes.recycle();
-                    }
-					return true;
-				}
-
-				@Override
-				public boolean onPrepareActionMode(ActionMode mode, Menu menu) {
-					return false;
-				}
-
-				@Override
-				public boolean onActionItemClicked(ActionMode mode, MenuItem item) {
-					switch (item.getItemId()) {
-						case 1:
-							String selectedText = mEmulator.getSelectedText(mSelX1, mSelY1, mSelX2, mSelY2).trim();
-							mTermSession.clipboardText(selectedText);
-							break;
-						case 2:
-							ClipboardManager clipboard = (ClipboardManager) getContext().getSystemService(Context.CLIPBOARD_SERVICE);
-							ClipData clipData = clipboard.getPrimaryClip();
-							if (clipData != null) {
-								CharSequence paste = clipData.getItemAt(0).coerceToText(getContext());
-								if (!TextUtils.isEmpty(paste)) mEmulator.paste(paste.toString());
-							}
-							break;
-						case 3:
-							showContextMenu();
-							break;
-					}
-					toggleSelectingText(null);
-					return true;
-				}
-
-				@Override
-				public void onDestroyActionMode(ActionMode mode) {
-				}
-
-			};
-
-			if (Build.VERSION.SDK_INT >= Build.VERSION_CODES.M) {
-				mActionMode = startActionMode(new ActionMode.Callback2() {
-					@Override
-					public boolean onCreateActionMode(ActionMode mode, Menu menu) {
-						return callback.onCreateActionMode(mode, menu);
-					}
-
-					@Override
-					public boolean onPrepareActionMode(ActionMode mode, Menu menu) {
-						return false;
-					}
-
-					@Override
-					public boolean onActionItemClicked(ActionMode mode, MenuItem item) {
-						return callback.onActionItemClicked(mode, item);
-					}
-
-					@Override
-					public void onDestroyActionMode(ActionMode mode) {
-						// Ignore.
-					}
-
-					@Override
-					public void onGetContentRect(ActionMode mode, View view, Rect outRect) {
-						int x1 = Math.round(mSelX1 * mRenderer.mFontWidth);
-						int x2 = Math.round(mSelX2 * mRenderer.mFontWidth);
-						int y1 = Math.round((mSelY1 - mTopRow) * mRenderer.mFontLineSpacing);
-						int y2 = Math.round((mSelY2 + 1 - mTopRow) * mRenderer.mFontLineSpacing);
-						outRect.set(Math.min(x1, x2), y1, Math.max(x1, x2), y2);
-					}
-				}, ActionMode.TYPE_FLOATING);
-			} else {
-				mActionMode = startActionMode(callback);
-			}
-
-
-			invalidate();
-		} else {
-			mActionMode.finish();
-			mSelX1 = mSelY1 = mSelX2 = mSelY2 = -1;
-			invalidate();
-		}
-	}
-
-	public TerminalSession getCurrentSession() {
-		return mTermSession;
-	}
-
-}

app/src/main/jni/Application.mk

@@ -1,5 +0,0 @@
-APP_ABI := armeabi-v7a x86
-APP_PLATFORM := android-21
-NDK_TOOLCHAIN_VERSION := 4.9
-APP_CFLAGS := -std=c11 -Wall -Wextra -Os -fno-stack-protector
-APP_LDFLAGS = -nostdlib -Wl,--gc-sections

app/src/main/jni/termux.c

@@ -1,219 +0,0 @@
-#include <dirent.h>
-#include <fcntl.h>
-#include <jni.h>
-#include <signal.h>
-#include <stdio.h>
-#include <stdlib.h>
-#include <string.h>
-#include <sys/ioctl.h>
-#include <sys/wait.h>
-#include <termios.h>
-#include <unistd.h>
-
-#define TERMUX_UNUSED(x) x __attribute__((__unused__))
-#ifdef __APPLE__
-# define LACKS_PTSNAME_R
-#endif
-
-static int throw_runtime_exception(JNIEnv* env, char const* message)
-{
-        jclass exClass = (*env)->FindClass(env, "java/lang/RuntimeException");
-        (*env)->ThrowNew(env, exClass, message);
-        return -1;
-}
-
-static int create_subprocess(JNIEnv* env,
-                             char const* cmd,
-                             char const* cwd,
-                             char* const argv[],
-                             char** envp,
-                             int* pProcessId,
-                             jint rows,
-                             jint columns)
-{
-        int ptm = open("/dev/ptmx", O_RDWR | O_CLOEXEC);
-        if (ptm < 0) return throw_runtime_exception(env, "Cannot open /dev/ptmx");
-
-#ifdef LACKS_PTSNAME_R
-        char* devname;
-#else
-        char devname[64];
-#endif
-        if (grantpt(ptm) || unlockpt(ptm) ||
-#ifdef LACKS_PTSNAME_R
-			(devname = ptsname(ptm)) == NULL
-#else
-			ptsname_r(ptm, devname, sizeof(devname))
-#endif
-			) {
-                return throw_runtime_exception(env, "Cannot grantpt()/unlockpt()/ptsname_r() on /dev/ptmx");
-        }
-
-        // Enable UTF-8 mode and disable flow control to prevent Ctrl+S from locking up the display.
-        struct termios tios;
-        tcgetattr(ptm, &tios);
-        tios.c_iflag |= IUTF8;
-        tios.c_iflag &= ~(IXON | IXOFF);
-        tcsetattr(ptm, TCSANOW, &tios);
-
-        /** Set initial winsize. */
-        struct winsize sz = { .ws_row = rows, .ws_col = columns };
-        ioctl(ptm, TIOCSWINSZ, &sz);
-
-        pid_t pid = fork();
-        if (pid < 0) {
-                return throw_runtime_exception(env, "Fork failed");
-        } else if (pid > 0) {
-                *pProcessId = (int) pid;
-                return ptm;
-        } else {
-		// Clear signals which the Android java process may have blocked:
-		sigset_t signals_to_unblock;
-		sigfillset(&signals_to_unblock);
-		sigprocmask(SIG_UNBLOCK, &signals_to_unblock, 0);
-
-                close(ptm);
-                setsid();
-
-                int pts = open(devname, O_RDWR);
-                if (pts < 0) exit(-1);
-
-                dup2(pts, 0);
-                dup2(pts, 1);
-                dup2(pts, 2);
-
-                DIR* self_dir = opendir("/proc/self/fd");
-                if (self_dir != NULL) {
-                        int self_dir_fd = dirfd(self_dir);
-                        struct dirent* entry;
-                        while ((entry = readdir(self_dir)) != NULL) {
-                                int fd = atoi(entry->d_name);
-                                if(fd > 2 && fd != self_dir_fd) close(fd);
-                        }
-                        closedir(self_dir);
-                }
-
-		clearenv();
-                if (envp) for (; *envp; ++envp) putenv(*envp);
-
-                if (chdir(cwd) != 0) {
-                        char* error_message;
-                        // No need to free asprintf()-allocated memory since doing execvp() or exit() below.
-                        if (asprintf(&error_message, "chdir(\"%s\")", cwd) == -1) error_message = "chdir()";
-                        perror(error_message);
-                        fflush(stderr);
-                }
-                execvp(cmd, argv);
-                // Show terminal output about failing exec() call:
-		char* error_message;
-		if (asprintf(&error_message, "exec(\"%s\")", cmd) == -1) error_message = "exec()";
-                perror(error_message);
-                _exit(1);
-        }
-}
-
-JNIEXPORT jint JNICALL Java_com_termux_terminal_JNI_createSubprocess(
-    JNIEnv* env,
-    jclass TERMUX_UNUSED(clazz),
-    jstring cmd,
-    jstring cwd,
-    jobjectArray args,
-    jobjectArray envVars,
-    jintArray processIdArray,
-    jint rows,
-    jint columns)
-{
-        jsize size = args ? (*env)->GetArrayLength(env, args) : 0;
-        char** argv = NULL;
-        if (size > 0) {
-                argv = (char**) malloc((size + 1) * sizeof(char*));
-                if (!argv) return throw_runtime_exception(env, "Couldn't allocate argv array");
-                for (int i = 0; i < size; ++i) {
-                        jstring arg_java_string = (jstring) (*env)->GetObjectArrayElement(env, args, i);
-                        char const* arg_utf8 = (*env)->GetStringUTFChars(env, arg_java_string, NULL);
-                        if (!arg_utf8) return throw_runtime_exception(env, "GetStringUTFChars() failed for argv");
-                        argv[i] = strdup(arg_utf8);
-                        (*env)->ReleaseStringUTFChars(env, arg_java_string, arg_utf8);
-                }
-                argv[size] = NULL;
-        }
-
-        size = envVars ? (*env)->GetArrayLength(env, envVars) : 0;
-        char** envp = NULL;
-        if (size > 0) {
-                envp = (char**) malloc((size + 1) * sizeof(char *));
-                if (!envp) return throw_runtime_exception(env, "malloc() for envp array failed");
-                for (int i = 0; i < size; ++i) {
-                        jstring env_java_string = (jstring) (*env)->GetObjectArrayElement(env, envVars, i);
-                        char const* env_utf8 = (*env)->GetStringUTFChars(env, env_java_string, 0);
-                        if (!env_utf8) return throw_runtime_exception(env, "GetStringUTFChars() failed for env");
-                        envp[i] = strdup(env_utf8);
-                        (*env)->ReleaseStringUTFChars(env, env_java_string, env_utf8);
-                }
-                envp[size] = NULL;
-        }
-
-        int procId = 0;
-	char const* cmd_cwd = (*env)->GetStringUTFChars(env, cwd, NULL);
-        char const* cmd_utf8 = (*env)->GetStringUTFChars(env, cmd, NULL);
-        int ptm = create_subprocess(env, cmd_utf8, cmd_cwd, argv, envp, &procId, rows, columns);
-        (*env)->ReleaseStringUTFChars(env, cmd, cmd_utf8);
-        (*env)->ReleaseStringUTFChars(env, cmd, cmd_cwd);
-
-        if (argv) {
-                for (char** tmp = argv; *tmp; ++tmp) free(*tmp);
-                free(argv);
-        }
-        if (envp) {
-                for (char** tmp = envp; *tmp; ++tmp) free(*tmp);
-                free(envp);
-        }
-
-        int* pProcId = (int*) (*env)->GetPrimitiveArrayCritical(env, processIdArray, NULL);
-        if (!pProcId) return throw_runtime_exception(env, "JNI call GetPrimitiveArrayCritical(processIdArray, &isCopy) failed");
-
-        *pProcId = procId;
-        (*env)->ReleasePrimitiveArrayCritical(env, processIdArray, pProcId, 0);
-
-        return ptm;
-}
-
-JNIEXPORT void JNICALL Java_com_termux_terminal_JNI_setPtyWindowSize(JNIEnv* TERMUX_UNUSED(env), jclass TERMUX_UNUSED(clazz), jint fd, jint rows, jint cols)
-{
-        struct winsize sz = { .ws_row = rows, .ws_col = cols };
-        ioctl(fd, TIOCSWINSZ, &sz);
-}
-
-JNIEXPORT void JNICALL Java_com_termux_terminal_JNI_setPtyUTF8Mode(JNIEnv* TERMUX_UNUSED(env), jclass TERMUX_UNUSED(clazz), jint fd)
-{
-        struct termios tios;
-        tcgetattr(fd, &tios);
-        if ((tios.c_iflag & IUTF8) == 0) {
-                tios.c_iflag |= IUTF8;
-                tcsetattr(fd, TCSANOW, &tios);
-        }
-}
-
-JNIEXPORT int JNICALL Java_com_termux_terminal_JNI_waitFor(JNIEnv* TERMUX_UNUSED(env), jclass TERMUX_UNUSED(clazz), jint pid)
-{
-        int status;
-        waitpid(pid, &status, 0);
-        if (WIFEXITED(status)) {
-                return WEXITSTATUS(status);
-        } else if (WIFSIGNALED(status)) {
-                return -WTERMSIG(status);
-        } else {
-                // Should never happen - waitpid(2) says "One of the first three macros will evaluate to a non-zero (true) value".
-                return 0;
-        }
-}
-
-JNIEXPORT void JNICALL Java_com_termux_terminal_JNI_hangupProcessGroup(JNIEnv* TERMUX_UNUSED(env), jclass TERMUX_UNUSED(clazz), jint procId)
-{
-	killpg(procId, SIGHUP);
-}
-
-JNIEXPORT void JNICALL Java_com_termux_terminal_JNI_close(JNIEnv* TERMUX_UNUSED(env), jclass TERMUX_UNUSED(clazz), jint fileDescriptor)
-{
-        close(fileDescriptor);
-}

app/src/main/res/drawable/ic_new_session.xml

@@ -0,0 +1,17 @@
+<vector xmlns:android="http://schemas.android.com/apk/res/android"
+        android:width="24dp"
+        android:height="24dp"
+        android:viewportWidth="24.0"
+        android:viewportHeight="24.0">
+
+    <path
+        android:fillColor="#FFF"
+        android:pathData="M 12, 12
+                          m -10.5, 0
+                          a 10.5,10.5 0 1,0 21,0
+                          a 10.5,10.5 0 1,0 -21,0"/>
+
+    <path
+        android:fillColor="#FF000000"
+        android:pathData="M12,2C6.48,2 2,6.48 2,12s4.48,10 10,10 10,-4.48 10,-10S17.52,2 12,2zM17,13h-4v4h-2v-4L7,13v-2h4L11,7h2v4h4v2z"/>
+</vector>

app/src/main/res/drawable/ic_service_notification.xml

@@ -0,0 +1,33 @@
+<vector xmlns:android="http://schemas.android.com/apk/res/android"
+    android:height="48dp"
+    android:width="48dp"
+    android:viewportWidth="48"
+    android:viewportHeight="48">
+    <!--
+        https://material.google.com/style/icons.html
+    -->
+
+    <!-- Screen border. -->
+    <path android:fillColor="#00000000"
+          android:strokeColor="#000"
+          android:strokeWidth="3"
+          android:pathData="M7,4
+                            l34,0
+                            q3 0,3 3
+                            l0,34
+                            q0 3, -3 3
+                            l-34,0
+                            q-3 0, -3-3
+                            l0 -34
+                            q0 -3, 3 -3"
+          />
+
+    <!-- Block cursor. -->
+    <path android:fillColor="#000"
+          android:pathData="M14,14
+                            l5,0
+                            l0,10
+                            l-5,0"
+        />
+
+</vector>

app/src/main/res/layout/drawer_layout.xml

@@ -1,58 +1,75 @@
-<com.termux.drawer.DrawerLayout xmlns:android="http://schemas.android.com/apk/res/android"
+<RelativeLayout xmlns:android="http://schemas.android.com/apk/res/android"
-    android:id="@+id/drawer_layout"
     android:layout_width="match_parent"
-    android:layout_height="match_parent" >
+    android:layout_height="match_parent"
+    android:orientation="vertical">
 
-    <com.termux.view.TerminalView
+    <android.support.v4.widget.DrawerLayout
-        android:id="@+id/terminal_view"
+        android:id="@+id/drawer_layout"
         android:layout_width="match_parent"
-        android:layout_height="match_parent"
+        android:layout_alignParentTop="true"
-        android:focusableInTouchMode="true"
+        android:layout_above="@+id/viewpager"
-        android:scrollbarThumbVertical="@drawable/terminal_scroll_shape"
+        android:layout_height="match_parent">
-        android:scrollbars="vertical" />
 
-    <LinearLayout
+        <com.termux.view.TerminalView
-        android:id="@+id/left_drawer"
+            android:id="@+id/terminal_view"
-        android:layout_width="240dp"
-        android:layout_height="match_parent"
-        android:layout_gravity="start"
-        android:background="@android:color/white"
-        android:choiceMode="singleChoice"
-        android:divider="@android:color/transparent"
-        android:dividerHeight="0dp"
-        android:orientation="vertical" >
-
-        <ListView
-            android:id="@+id/left_drawer_list"
             android:layout_width="match_parent"
-            android:layout_height="0dp"
+            android:layout_height="match_parent"
-            android:layout_gravity="top"
+            android:focusableInTouchMode="true"
-            android:layout_weight="1"
+            android:scrollbarThumbVertical="@drawable/terminal_scroll_shape"
-            android:choiceMode="singleChoice"
+            android:scrollbars="vertical" />
-            android:longClickable="true" />
 
         <LinearLayout
-            style="?android:attr/buttonBarStyle"
+            android:id="@+id/left_drawer"
-            android:layout_width="match_parent"
+            android:layout_width="240dp"
-            android:layout_height="wrap_content"
+            android:layout_height="match_parent"
-            android:orientation="horizontal" >
+            android:layout_gravity="start"
+            android:background="@android:color/white"
+            android:choiceMode="singleChoice"
+            android:divider="@android:color/transparent"
+            android:dividerHeight="0dp"
+            android:descendantFocusability="blocksDescendants"
+            android:orientation="vertical">
 
-            <Button
+            <ListView
-                android:id="@+id/toggle_keyboard_button"
+                android:id="@+id/left_drawer_list"
-                style="?android:attr/buttonBarButtonStyle"
+                android:layout_width="match_parent"
+                android:layout_height="0dp"
+                android:layout_gravity="top"
+                android:layout_weight="1"
+                android:choiceMode="singleChoice"
+                android:longClickable="true" />
+
+            <LinearLayout
+                style="?android:attr/buttonBarStyle"
                 android:layout_width="match_parent"
                 android:layout_height="wrap_content"
-                android:layout_weight="1"
+                android:orientation="horizontal">
-                android:text="@string/toggle_soft_keyboard" />
 
-            <Button
+                <Button
-                android:id="@+id/new_session_button"
+                    android:id="@+id/toggle_keyboard_button"
-                style="?android:attr/buttonBarButtonStyle"
+                    style="?android:attr/buttonBarButtonStyle"
-                android:layout_width="match_parent"
+                    android:layout_width="match_parent"
-                android:layout_height="wrap_content"
+                    android:layout_height="wrap_content"
-                android:layout_weight="1"
+                    android:layout_weight="1"
-                android:text="@string/new_session" />
+                    android:text="@string/toggle_soft_keyboard" />
+
+                <Button
+                    android:id="@+id/new_session_button"
+                    style="?android:attr/buttonBarButtonStyle"
+                    android:layout_width="match_parent"
+                    android:layout_height="wrap_content"
+                    android:layout_weight="1"
+                    android:text="@string/new_session" />
+            </LinearLayout>
         </LinearLayout>
-    </LinearLayout>
 
-</com.termux.drawer.DrawerLayout>
+    </android.support.v4.widget.DrawerLayout>
+
+    <android.support.v4.view.ViewPager
+        android:id="@+id/viewpager"
+        android:visibility="gone"
+        android:layout_width="match_parent"
+        android:layout_height="40dp"
+        android:background="@android:drawable/screen_background_dark_transparent"
+        android:layout_alignParentBottom="true" />
+</RelativeLayout>

app/src/main/res/layout/extra_keys_main.xml

@@ -0,0 +1,8 @@
+<?xml version="1.0" encoding="utf-8"?>
+<com.termux.app.ExtraKeysView xmlns:android="http://schemas.android.com/apk/res/android"
+    android:id="@+id/extra_keys"
+    style="?android:attr/buttonBarStyle"
+    android:layout_width="match_parent"
+    android:layout_height="match_parent"
+    android:layout_alignParentBottom="true"
+    android:orientation="horizontal" />

app/src/main/res/layout/extra_keys_right.xml

@@ -0,0 +1,14 @@
+<?xml version="1.0" encoding="utf-8"?>
+<EditText xmlns:android="http://schemas.android.com/apk/res/android"
+    xmlns:tools="http://schemas.android.com/tools"
+    android:id="@+id/text_input"
+    android:layout_width="match_parent"
+    android:layout_height="match_parent"
+    android:imeOptions="actionSend|flagNoFullscreen"
+    android:maxLines="1"
+    android:inputType="text"
+    android:textColor="@android:color/white"
+    android:paddingTop="0dp"
+    android:textCursorDrawable="@null"
+    android:paddingBottom="0dp"
+    tools:ignore="LabelFor" />

app/src/main/res/layout/file_picker.xml

@@ -1,21 +0,0 @@
-<?xml version="1.0" encoding="utf-8"?>
-<LinearLayout
-    xmlns:android="http://schemas.android.com/apk/res/android"
-    android:orientation="vertical"
-    android:layout_width="match_parent"
-    android:layout_height="match_parent"
-    android:paddingLeft="8dp"
-    android:paddingRight="8dp">
-
-    <ListView android:id="@android:id/list"
-        android:layout_width="match_parent"
-        android:layout_height="0dp"
-        android:layout_weight="1"
-        android:drawSelectorOnTop="false"/>
-
-    <TextView android:id="@android:id/empty"
-        android:gravity="center"
-        android:layout_width="match_parent"
-        android:layout_height="match_parent"
-        android:text="@string/empty_folder"/>
-</LinearLayout>

app/src/main/res/values/strings.xml

@@ -11,10 +11,6 @@
    <string name="share_transcript_title">Terminal transcript</string>
    <string name="help">Help</string>
 
-   <string name="welcome_dialog_title">Welcome to Termux</string>
-   <string name="welcome_dialog_body">Long press and select <i>More…</i> to show a menu where <i>Help</i> is available.\n\nExecute <b>apt update</b> to update the packages list before installing packages.</string>
-   <string name="welcome_dialog_dont_show_again_button">Do not show again</string>
-
    <string name="bootstrap_installer_body">Installing…</string>
    <string name="bootstrap_error_title">Unable to install</string>
    <string name="bootstrap_error_body">Termux was unable to install the bootstrap packages.\n\nCheck your network connection and try again.</string>
@@ -34,12 +30,8 @@
   <string name="select_url_copied_to_clipboard">URL copied to clipboard</string>
   <string name="share_transcript_chooser_title">Send text to:</string>
 
-  <string name="paste_text">Paste</string>
+  <string name="kill_process">Kill process (%d)</string>
-  <string name="copy_text">Copy</string>
+  <string name="confirm_kill_process">Really kill this session?</string>
-  <string name="text_selection_more">More…</string>
-
-  <string name="kill_process">Hangup</string>
-  <string name="confirm_kill_process">Close this process?</string>
 
   <string name="session_rename_title">Set session name</string>
   <string name="session_rename_positive_button">Set</string>
@@ -50,10 +42,8 @@
   <string name="styling_install">Install</string>
 
   <string name="notification_action_exit">Exit</string>
-  <string name="notification_action_wakelock">Wake</string>
+  <string name="notification_action_wake_lock">Acquire wakelock</string>
-  <string name="notification_action_wifilock">Wifi</string>
+  <string name="notification_action_wake_unlock">Release wakelock</string>
-
-  <string name="empty_folder">Empty folder.</string>
 
   <string name="file_received_title">Save file in ~/downloads/</string>
   <string name="file_received_edit_button">Edit</string>

app/src/main/res/values/styles.xml

@@ -5,6 +5,7 @@
     <!-- NOTE: Cannot use "Light." since it hides the terminal scrollbar on the default black background. -->
     <style name="Theme.Termux" parent="@android:style/Theme.Material.Light.NoActionBar">
         <item name="android:statusBarColor">#000000</item>
+        <item name="android:colorPrimary">#FF000000</item>
         <item name="android:windowBackground">@android:color/black</item>
 
         <!-- Seen in buttons on left drawer: -->
@@ -13,6 +14,10 @@
         <!-- Avoid action mode toolbar pushing down terminal content when
              selecting text on pre-6.0 (non-floating toolbar). -->
         <item name="android:windowActionModeOverlay">true</item>
+
+        <!-- https://developer.android.com/training/tv/start/start.html#transition-color -->
+        <item name="android:windowAllowReturnTransitionOverlap">true</item>
+        <item name="android:windowAllowEnterTransitionOverlap">true</item>
     </style>
 
 	<style name="TermuxAlertDialogStyle" parent="@android:style/Theme.Material.Light.Dialog.Alert">

app/src/main/res/xml/shortcuts.xml

@@ -0,0 +1,14 @@
+<shortcuts xmlns:tools="http://schemas.android.com/tools"
+           xmlns:android="http://schemas.android.com/apk/res/android">
+    <shortcut
+        android:shortcutId="new_session"
+        android:enabled="true"
+        android:icon="@drawable/ic_new_session"
+        android:shortcutShortLabel="@string/new_session"
+        tools:targetApi="n_mr1">
+        <intent
+            android:action="android.intent.action.RUN"
+            android:targetPackage="com.termux"
+            android:targetClass="com.termux.app.TermuxActivity"/>
+    </shortcut>
+</shortcuts>

art/copy-to-other-apps.sh

@@ -0,0 +1,20 @@
+#!/bin/sh
+
+for DENSITY in mdpi hdpi xhdpi xxhdpi xxxhdpi; do
+	FOLDER=../app/src/main/res/mipmap-$DENSITY
+
+	for FILE in ic_launcher ic_launcher_round; do
+		PNG=$FOLDER/$FILE.png
+
+		# Update other apps:
+		for APP in api boot styling tasker widget; do
+			APPDIR=../../termux-$APP
+			if [ -d $APPDIR ]; then
+				APP_FOLDER=$APPDIR/app/src/main/res/mipmap-$DENSITY
+				mkdir -p $APP_FOLDER
+				cp $PNG $APP_FOLDER/$FILE.png
+			fi
+		done
+	done
+
+done

art/feature-graphic.svg

@@ -0,0 +1,30 @@
+<?xml version="1.0" encoding="UTF-8" standalone="yes" ?>
+<!--
+  This is a feature graphic:
+    https://support.google.com/googleplay/android-developer/answer/1078870
+  - 1024px by 500px, no alpha
+  - Don't include any copy or important visual information near the borders of the asset,
+    specifically near the bottom third of the frame.
+  - Try to center align any logo/copy information in the vertical and horizontal center of the frame.
+  - If adding text, use large font sizes.
+  - Your graphic may be displayed alone without the app icon.
+ -->
+<svg xmlns="http://www.w3.org/2000/svg"
+     version="1.1"
+     viewBox="0 0 1024 500">
+
+ <rect fill="#0" width="100%" height="100%" />
+
+ <text id="shell_prompt"
+       x="130"
+       y="330"
+       style="fill: #ffffff; font-size: 124px; font-family: Menlo;">
+       <!--
+   <tspan>$</tspan>
+   <tspan x="290">Termux</tspan>
+   <tspan x="734">█</tspan>
+   -->
+   <tspan>$ Termux █</tspan>
+ </text>
+
+</svg>

art/generate-feature-graphic.sh

@@ -0,0 +1,5 @@
+#!/bin/bash
+
+echo "Generating feature graphics to ~/termux-icons/termux-feature-graphic.png..."
+mkdir -p ~/termux-icons/
+rsvg-convert feature-graphic.svg > ~/termux-icons/feature-graphic.png

art/generate-launcher-images.sh

@@ -0,0 +1,20 @@
+#!/bin/sh
+
+for DENSITY in mdpi hdpi xhdpi xxhdpi xxxhdpi; do
+	case $DENSITY in
+		mdpi) SIZE=48;;
+		hdpi) SIZE=72;;
+		xhdpi) SIZE=96;;
+		xxhdpi) SIZE=144;;
+		xxxhdpi) SIZE=192;;
+	esac
+
+	FOLDER=../app/src/main/res/mipmap-$DENSITY
+	mkdir -p $FOLDER
+
+	for FILE in ic_launcher ic_launcher_round; do
+		PNG=$FOLDER/$FILE.png
+		rsvg-convert -w $SIZE -h $SIZE $FILE.svg > $PNG
+		zopflipng -y $PNG $PNG
+	done
+done

art/generate-tv-banner.sh

@@ -0,0 +1,9 @@
+#!/bin/bash
+
+echo "Generating feature graphics to ~/termux-icons/termux-feature-graphic.png..."
+mkdir -p ~/termux-icons/
+
+# The Android TV banner on google play (1280x720) has same aspect ratio
+# as the banner in the app (320x180).
+rsvg-convert -w 1280 -h 720 tv-banner.svg > ~/termux-icons/tv-banner.png
+rsvg-convert -w  320 -h 180 tv-banner.svg > ../app/src/main/res/drawable/banner.png

art/ic_launcher.svg

@@ -0,0 +1,26 @@
+<svg xmlns="http://www.w3.org/2000/svg" viewBox="0 0 48 48">
+
+    <!-- Screen and border. -->
+    <path fill="#000"
+          stroke="#BFCBCD"
+          stroke-width="2"
+          d="M9,6
+             l30,0
+             q3 0,3 3
+             l0,30
+             q0 3, -3 3
+             l-30,0
+             q-3 0, -3-3
+             l0 -30
+             q0 -3, 3 -3"
+    />
+
+    <!-- Block cursor. -->
+    <path fill="#FFF"
+          d="M14,14
+             l5,0
+             l0,10
+             l-5,0"
+    />
+
+</svg>

art/ic_launcher_round.svg

@@ -0,0 +1,21 @@
+<svg xmlns="http://www.w3.org/2000/svg" viewBox="0 0 48 48">
+
+    <!-- Screen and border. -->
+    <path fill="#000"
+          stroke="#BFCBCD"
+          stroke-width="2"
+          d="M 24, 24
+             m -21, 0
+             a 21,21 0 1,0 42,0
+             a 21,21 0 1,0 -42,0"
+    />
+
+    <!-- Block cursor. -->
+    <path fill="#FFF"
+          d="M15,15
+             l5,0
+             l0,10
+             l-5,0"
+    />
+
+</svg>

art/tv-banner.svg

@@ -0,0 +1,23 @@
+<?xml version="1.0" encoding="UTF-8" standalone="yes" ?>
+<!--
+  This is a tv banner graphic:
+    https://developer.android.com/design/tv/patterns.html#banner
+  - Size: 320 x 180 px, xhdpi resource in app
+  - Size: 1280 x 720 in google play.
+  - Text must be included in the image. If your app is available in more
+    than one language, you must provide versions of the banner image for each supported language.
+ -->
+<svg xmlns="http://www.w3.org/2000/svg"
+     version="1.1"
+     viewBox="0 0 1280 720">
+
+ <rect fill="#0" width="100%" height="100%" />
+
+ <text id="shell_prompt"
+       x="200"
+       y="410"
+       style="fill: #ffffff; font-size: 210px; font-family: Menlo, Monospace;">
+   <tspan>Termux  ▌</tspan>
+ </text>
+
+</svg>

build-jnilibs.sh

@@ -1,21 +0,0 @@
-#!/bin/sh
-# Script to build jni libraries while waiting for the new gradle build system:
-# http://tools.android.com/tech-docs/new-build-system/gradle-experimental#TOC-Ndk-Integration
-
-set -e -u
-
-SRC_JNILIBS=app/src/main/jniLibs/
-rm -Rf $SRC_JNILIBS
-mkdir -p $SRC_JNILIBS
-
-PROJECTDIR=`mktemp -d`
-JNIDIR=$PROJECTDIR/jni
-LIBSDIR=$PROJECTDIR/libs
-
-mkdir $JNIDIR
-cp app/src/main/jni/* $JNIDIR/
-
-ndk-build NDK_PROJECT_PATH=$PROJECTDIR
-cp -Rf $LIBSDIR/* $SRC_JNILIBS
-
-rm -Rf $PROJECTDIR

build.gradle

@@ -5,10 +5,7 @@ buildscript {
         jcenter()
     }
     dependencies {
-        classpath 'com.android.tools.build:gradle:1.5.0'
+        classpath 'com.android.tools.build:gradle:2.3.2'
-
-        // NOTE: Do not place your application dependencies here; they belong
-        // in the individual module build.gradle files
     }
 }
 

gradle.properties

@@ -1,18 +1,15 @@
-# Project-wide Gradle settings.
+## Project-wide Gradle settings.
-
+#
-# IDE (e.g. Android Studio) users:
-# Gradle settings configured through the IDE *will override*
-# any settings specified in this file.
-
 # For more details on how to configure your build environment visit
 # http://www.gradle.org/docs/current/userguide/build_environment.html
-
+#
 # Specifies the JVM arguments used for the daemon process.
 # The setting is particularly useful for tweaking memory settings.
 # Default value: -Xmx10248m -XX:MaxPermSize=256m
 # org.gradle.jvmargs=-Xmx2048m -XX:MaxPermSize=512m -XX:+HeapDumpOnOutOfMemoryError -Dfile.encoding=UTF-8
-
+#
 # When configured, Gradle will run in incubating parallel mode.
 # This option should only be used with decoupled projects. More details, visit
 # http://www.gradle.org/docs/current/userguide/multi_project_builds.html#sec:decoupled_projects
 # org.gradle.parallel=true
+org.gradle.jvmargs=-Xmx2048M

gradle/wrapper/gradle-wrapper.properties

@@ -1,6 +1,6 @@
-#Tue Mar 15 00:24:33 CET 2016
+#Mon Mar 06 01:34:12 CET 2017
 distributionBase=GRADLE_USER_HOME
 distributionPath=wrapper/dists
 zipStoreBase=GRADLE_USER_HOME
 zipStorePath=wrapper/dists
-distributionUrl=https\://services.gradle.org/distributions/gradle-2.12-bin.zip
+distributionUrl=https\://services.gradle.org/distributions/gradle-3.4.1-bin.zip

gradlew

@@ -1,4 +1,4 @@
-#!/usr/bin/env bash
+#!/usr/bin/env sh
 
 ##############################################################################
 ##
@@ -6,12 +6,30 @@
 ##
 ##############################################################################
 
-# Add default JVM options here. You can also use JAVA_OPTS and GRADLE_OPTS to pass JVM options to this script.
+# Attempt to set APP_HOME
-DEFAULT_JVM_OPTS=""
+# Resolve links: $0 may be a link
+PRG="$0"
+# Need this for relative symlinks.
+while [ -h "$PRG" ] ; do
+    ls=`ls -ld "$PRG"`
+    link=`expr "$ls" : '.*-> \(.*\)$'`
+    if expr "$link" : '/.*' > /dev/null; then
+        PRG="$link"
+    else
+        PRG=`dirname "$PRG"`"/$link"
+    fi
+done
+SAVED="`pwd`"
+cd "`dirname \"$PRG\"`/" >/dev/null
+APP_HOME="`pwd -P`"
+cd "$SAVED" >/dev/null
 
 APP_NAME="Gradle"
 APP_BASE_NAME=`basename "$0"`
 
+# Add default JVM options here. You can also use JAVA_OPTS and GRADLE_OPTS to pass JVM options to this script.
+DEFAULT_JVM_OPTS=""
+
 # Use the maximum available, or set MAX_FD != -1 to use that value.
 MAX_FD="maximum"
 
@@ -30,6 +48,7 @@ die ( ) {
 cygwin=false
 msys=false
 darwin=false
+nonstop=false
 case "`uname`" in
   CYGWIN* )
     cygwin=true
@@ -40,26 +59,11 @@ case "`uname`" in
   MINGW* )
     msys=true
     ;;
+  NONSTOP* )
+    nonstop=true
+    ;;
 esac
 
-# Attempt to set APP_HOME
-# Resolve links: $0 may be a link
-PRG="$0"
-# Need this for relative symlinks.
-while [ -h "$PRG" ] ; do
-    ls=`ls -ld "$PRG"`
-    link=`expr "$ls" : '.*-> \(.*\)$'`
-    if expr "$link" : '/.*' > /dev/null; then
-        PRG="$link"
-    else
-        PRG=`dirname "$PRG"`"/$link"
-    fi
-done
-SAVED="`pwd`"
-cd "`dirname \"$PRG\"`/" >/dev/null
-APP_HOME="`pwd -P`"
-cd "$SAVED" >/dev/null
-
 CLASSPATH=$APP_HOME/gradle/wrapper/gradle-wrapper.jar
 
 # Determine the Java command to use to start the JVM.
@@ -85,7 +89,7 @@ location of your Java installation."
 fi
 
 # Increase the maximum file descriptors if we can.
-if [ "$cygwin" = "false" -a "$darwin" = "false" ] ; then
+if [ "$cygwin" = "false" -a "$darwin" = "false" -a "$nonstop" = "false" ] ; then
     MAX_FD_LIMIT=`ulimit -H -n`
     if [ $? -eq 0 ] ; then
         if [ "$MAX_FD" = "maximum" -o "$MAX_FD" = "max" ] ; then
@@ -150,11 +154,19 @@ if $cygwin ; then
     esac
 fi
 
-# Split up the JVM_OPTS And GRADLE_OPTS values into an array, following the shell quoting and substitution rules
+# Escape application args
-function splitJvmOpts() {
+save ( ) {
-    JVM_OPTS=("$@")
+    for i do printf %s\\n "$i" | sed "s/'/'\\\\''/g;1s/^/'/;\$s/\$/' \\\\/" ; done
+    echo " "
 }
-eval splitJvmOpts $DEFAULT_JVM_OPTS $JAVA_OPTS $GRADLE_OPTS
+APP_ARGS=$(save "$@")
-JVM_OPTS[${#JVM_OPTS[*]}]="-Dorg.gradle.appname=$APP_BASE_NAME"
 
-exec "$JAVACMD" "${JVM_OPTS[@]}" -classpath "$CLASSPATH" org.gradle.wrapper.GradleWrapperMain "$@"
+# Collect all arguments for the java command, following the shell quoting and substitution rules
+eval set -- $DEFAULT_JVM_OPTS $JAVA_OPTS $GRADLE_OPTS "\"-Dorg.gradle.appname=$APP_BASE_NAME\"" -classpath "\"$CLASSPATH\"" org.gradle.wrapper.GradleWrapperMain "$APP_ARGS"
+
+# by default we should be in the correct project dir, but when run from Finder on Mac, the cwd is wrong
+if [ "$(uname)" = "Darwin" ] && [ "$HOME" = "$PWD" ]; then
+  cd "$(dirname "$0")"
+fi
+
+exec "$JAVACMD" "$@"

gradlew.bat

@@ -0,0 +1,84 @@
+@if "%DEBUG%" == "" @echo off
+@rem ##########################################################################
+@rem
+@rem  Gradle startup script for Windows
+@rem
+@rem ##########################################################################
+
+@rem Set local scope for the variables with windows NT shell
+if "%OS%"=="Windows_NT" setlocal
+
+set DIRNAME=%~dp0
+if "%DIRNAME%" == "" set DIRNAME=.
+set APP_BASE_NAME=%~n0
+set APP_HOME=%DIRNAME%
+
+@rem Add default JVM options here. You can also use JAVA_OPTS and GRADLE_OPTS to pass JVM options to this script.
+set DEFAULT_JVM_OPTS=
+
+@rem Find java.exe
+if defined JAVA_HOME goto findJavaFromJavaHome
+
+set JAVA_EXE=java.exe
+%JAVA_EXE% -version >NUL 2>&1
+if "%ERRORLEVEL%" == "0" goto init
+
+echo.
+echo ERROR: JAVA_HOME is not set and no 'java' command could be found in your PATH.
+echo.
+echo Please set the JAVA_HOME variable in your environment to match the
+echo location of your Java installation.
+
+goto fail
+
+:findJavaFromJavaHome
+set JAVA_HOME=%JAVA_HOME:"=%
+set JAVA_EXE=%JAVA_HOME%/bin/java.exe
+
+if exist "%JAVA_EXE%" goto init
+
+echo.
+echo ERROR: JAVA_HOME is set to an invalid directory: %JAVA_HOME%
+echo.
+echo Please set the JAVA_HOME variable in your environment to match the
+echo location of your Java installation.
+
+goto fail
+
+:init
+@rem Get command-line arguments, handling Windows variants
+
+if not "%OS%" == "Windows_NT" goto win9xME_args
+
+:win9xME_args
+@rem Slurp the command line arguments.
+set CMD_LINE_ARGS=
+set _SKIP=2
+
+:win9xME_args_slurp
+if "x%~1" == "x" goto execute
+
+set CMD_LINE_ARGS=%*
+
+:execute
+@rem Setup the command line
+
+set CLASSPATH=%APP_HOME%\gradle\wrapper\gradle-wrapper.jar
+
+@rem Execute Gradle
+"%JAVA_EXE%" %DEFAULT_JVM_OPTS% %JAVA_OPTS% %GRADLE_OPTS% "-Dorg.gradle.appname=%APP_BASE_NAME%" -classpath "%CLASSPATH%" org.gradle.wrapper.GradleWrapperMain %CMD_LINE_ARGS%
+
+:end
+@rem End local scope for the variables with windows NT shell
+if "%ERRORLEVEL%"=="0" goto mainEnd
+
+:fail
+rem Set variable GRADLE_EXIT_CONSOLE if you need the _script_ return code instead of
+rem the _cmd.exe /c_ return code!
+if  not "" == "%GRADLE_EXIT_CONSOLE%" exit 1
+exit /b 1
+
+:mainEnd
+if "%OS%"=="Windows_NT" endlocal
+
+:omega

scripts/bintray-publish.gradle

@@ -0,0 +1,78 @@
+// Start https://raw.githubusercontent.com/nuuneoi/JCenter/master/installv1.gradle
+apply plugin: 'com.github.dcendents.android-maven'
+group = publishedGroupId // Maven Group ID for the artifact
+install {
+    repositories.mavenInstaller {
+        pom {
+            project {
+                packaging 'aar'
+                groupId publishedGroupId
+                artifactId artifact
+
+                name libraryName
+                description libraryDescription
+                url siteUrl
+
+                licenses {
+                    license {
+                        name 'GNU General Public License version 3'
+                        url 'https://opensource.org/licenses/gpl-3.0.html'
+                    }
+                }
+
+                developers {
+                    developer {
+                        id 'fornwall'
+                        name 'Fredrik Fornwall'
+                        email 'fredrik@fornwall.net'
+                    }
+                }
+                scm {
+                    connection gitUrl
+                    developerConnection gitUrl
+                    url siteUrl
+                }
+            }
+        }
+    }
+}
+// End https://raw.githubusercontent.com/nuuneoi/JCenter/master/installv1.gradle
+
+// Start https://raw.githubusercontent.com/nuuneoi/JCenter/master/bintrayv1.gradle
+apply plugin: 'com.jfrog.bintray'
+
+version = libraryVersion
+
+task sourcesJar(type: Jar) {
+	classifier = 'sources'
+	from android.sourceSets.main.java.srcDirs
+}
+
+artifacts {
+	archives sourcesJar
+}
+
+bintray {
+	user = System.getenv('BINTRAY_USER')
+	key = System.getenv('BINTRAY_API_KEY')
+
+	configurations = ['archives']
+	pkg {
+		repo = 'maven'
+		name = bintrayName
+		userOrg = 'termux'
+		desc = libraryDescription
+		websiteUrl = siteUrl
+		vcsUrl = gitUrl
+		licenses = ['GPL-3.0']
+		publish = true
+		publicDownloadNumbers = true
+		version {
+			desc = libraryDescription
+			gpg {
+				sign = false //Determines whether to GPG sign the files. The default is false
+				// passphrase = properties.getProperty("bintray.gpg.password")
+			}
+		}
+	}
+}

settings.gradle

@@ -1 +1 @@
-include ':app'
+include ':app', ':terminal-emulator', ':terminal-view'

terminal-emulator/build.gradle

@@ -0,0 +1,62 @@
+plugins {
+    id "com.jfrog.bintray" version "1.7"
+    id "com.github.dcendents.android-maven" version "1.5"
+}
+
+apply plugin: 'com.android.library'
+
+ext {
+    bintrayName = 'terminal-emulator'
+    publishedGroupId = 'com.termux'
+    libraryName = 'TerminalEmulator'
+    artifact = 'terminal-emulator'
+    libraryDescription = 'The terminal emulator used in Termux'
+    siteUrl = 'https://github.com/termux/termux'
+    gitUrl = 'https://github.com/termux/termux.git'
+    libraryVersion = '0.49'
+}
+
+android {
+    compileSdkVersion 25
+    buildToolsVersion "25.0.3"
+
+    defaultConfig {
+        minSdkVersion 21
+        targetSdkVersion 25
+
+        externalNativeBuild {
+            ndkBuild {
+                cFlags "-std=c11", "-Wall", "-Wextra", "-Werror", "-Os", "-fno-stack-protector", "-Wl,--gc-sections"
+            }
+        }
+
+        ndk {
+            abiFilters 'x86', 'x86_64', 'armeabi-v7a', 'arm64-v8a'
+        }
+    }
+
+    buildTypes {
+        release {
+            minifyEnabled false
+            proguardFiles getDefaultProguardFile('proguard-android.txt'), 'proguard-rules.pro'
+        }
+    }
+
+    externalNativeBuild {
+        ndkBuild {
+            path "src/main/jni/Android.mk"
+        }
+    }
+}
+
+tasks.withType(Test) {
+    testLogging {
+        events "started", "passed", "skipped", "failed"
+    }
+}
+
+dependencies {
+    testCompile 'junit:junit:4.12'
+}
+
+apply from: '../scripts/bintray-publish.gradle'

terminal-emulator/proguard-rules.pro

@@ -0,0 +1,25 @@
+# Add project specific ProGuard rules here.
+# By default, the flags in this file are appended to flags specified
+# in /Users/fornwall/lib/android-sdk/tools/proguard/proguard-android.txt
+# You can edit the include path and order by changing the proguardFiles
+# directive in build.gradle.
+#
+# For more details, see
+#   http://developer.android.com/guide/developing/tools/proguard.html
+
+# Add any project specific keep options here:
+
+# If your project uses WebView with JS, uncomment the following
+# and specify the fully qualified class name to the JavaScript interface
+# class:
+#-keepclassmembers class fqcn.of.javascript.interface.for.webview {
+#   public *;
+#}
+
+# Uncomment this to preserve the line number information for
+# debugging stack traces.
+#-keepattributes SourceFile,LineNumberTable
+
+# If you keep the line number information, uncomment this to
+# hide the original source file name.
+#-renamesourcefileattribute SourceFile

terminal-emulator/src/main/AndroidManifest.xml

@@ -0,0 +1,3 @@
+<manifest xmlns:android="http://schemas.android.com/apk/res/android"
+          package="com.termux.terminal">
+</manifest>

terminal-emulator/src/main/java/com/termux/terminal/ByteQueue.java

@@ -0,0 +1,108 @@
+package com.termux.terminal;
+
+/** A circular byte buffer allowing one producer and one consumer thread. */
+final class ByteQueue {
+
+    private final byte[] mBuffer;
+    private int mHead;
+    private int mStoredBytes;
+    private boolean mOpen = true;
+
+    public ByteQueue(int size) {
+        mBuffer = new byte[size];
+    }
+
+    public synchronized void close() {
+        mOpen = false;
+        notify();
+    }
+
+    public synchronized int read(byte[] buffer, boolean block) {
+        while (mStoredBytes == 0 && mOpen) {
+            if (block) {
+                try {
+                    wait();
+                } catch (InterruptedException e) {
+                    // Ignore.
+                }
+            } else {
+                return 0;
+            }
+        }
+        if (!mOpen) return -1;
+
+        int totalRead = 0;
+        int bufferLength = mBuffer.length;
+        boolean wasFull = bufferLength == mStoredBytes;
+        int length = buffer.length;
+        int offset = 0;
+        while (length > 0 && mStoredBytes > 0) {
+            int oneRun = Math.min(bufferLength - mHead, mStoredBytes);
+            int bytesToCopy = Math.min(length, oneRun);
+            System.arraycopy(mBuffer, mHead, buffer, offset, bytesToCopy);
+            mHead += bytesToCopy;
+            if (mHead >= bufferLength) mHead = 0;
+            mStoredBytes -= bytesToCopy;
+            length -= bytesToCopy;
+            offset += bytesToCopy;
+            totalRead += bytesToCopy;
+        }
+        if (wasFull) notify();
+        return totalRead;
+    }
+
+    /**
+     * Attempt to write the specified portion of the provided buffer to the queue.
+     * <p/>
+     * Returns whether the output was totally written, false if it was closed before.
+     */
+    public boolean write(byte[] buffer, int offset, int lengthToWrite) {
+        if (lengthToWrite + offset > buffer.length) {
+            throw new IllegalArgumentException("length + offset > buffer.length");
+        } else if (lengthToWrite <= 0) {
+            throw new IllegalArgumentException("length <= 0");
+        }
+
+        final int bufferLength = mBuffer.length;
+
+        synchronized (this) {
+            while (lengthToWrite > 0) {
+                while (bufferLength == mStoredBytes && mOpen) {
+                    try {
+                        wait();
+                    } catch (InterruptedException e) {
+                        // Ignore.
+                    }
+                }
+                if (!mOpen) return false;
+                final boolean wasEmpty = mStoredBytes == 0;
+                int bytesToWriteBeforeWaiting = Math.min(lengthToWrite, bufferLength - mStoredBytes);
+                lengthToWrite -= bytesToWriteBeforeWaiting;
+
+                while (bytesToWriteBeforeWaiting > 0) {
+                    int tail = mHead + mStoredBytes;
+                    int oneRun;
+                    if (tail >= bufferLength) {
+                        // Buffer: [.............]
+                        // ________________H_______T
+                        // =>
+                        // Buffer: [.............]
+                        // ___________T____H
+                        // onRun= _____----_
+                        tail = tail - bufferLength;
+                        oneRun = mHead - tail;
+                    } else {
+                        oneRun = bufferLength - tail;
+                    }
+                    int bytesToCopy = Math.min(oneRun, bytesToWriteBeforeWaiting);
+                    System.arraycopy(buffer, offset, mBuffer, tail, bytesToCopy);
+                    offset += bytesToCopy;
+                    bytesToWriteBeforeWaiting -= bytesToCopy;
+                    mStoredBytes += bytesToCopy;
+                }
+                if (wasEmpty) notify();
+            }
+        }
+        return true;
+    }
+}

terminal-emulator/src/main/java/com/termux/terminal/EmulatorDebug.java

@@ -4,7 +4,7 @@ import android.util.Log;
 
 public final class EmulatorDebug {
 
-	/** The tag to use with {@link Log}. */
+    /** The tag to use with {@link Log}. */
-	public static final String LOG_TAG = "termux";
+    public static final String LOG_TAG = "termux";
 
 }

terminal-emulator/src/main/java/com/termux/terminal/JNI.java

@@ -0,0 +1,41 @@
+package com.termux.terminal;
+
+/**
+ * Native methods for creating and managing pseudoterminal subprocesses. C code is in jni/termux.c.
+ */
+final class JNI {
+
+    static {
+        System.loadLibrary("termux");
+    }
+
+    /**
+     * Create a subprocess. Differs from {@link ProcessBuilder} in that a pseudoterminal is used to communicate with the
+     * subprocess.
+     * <p/>
+     * Callers are responsible for calling {@link #close(int)} on the returned file descriptor.
+     *
+     * @param cmd       The command to execute
+     * @param cwd       The current working directory for the executed command
+     * @param args      An array of arguments to the command
+     * @param envVars   An array of strings of the form "VAR=value" to be added to the environment of the process
+     * @param processId A one-element array to which the process ID of the started process will be written.
+     * @return the file descriptor resulting from opening /dev/ptmx master device. The sub process will have opened the
+     * slave device counterpart (/dev/pts/$N) and have it as stdint, stdout and stderr.
+     */
+    public static native int createSubprocess(String cmd, String cwd, String[] args, String[] envVars, int[] processId, int rows, int columns);
+
+    /** Set the window size for a given pty, which allows connected programs to learn how large their screen is. */
+    public static native void setPtyWindowSize(int fd, int rows, int cols);
+
+    /**
+     * Causes the calling thread to wait for the process associated with the receiver to finish executing.
+     *
+     * @return if >= 0, the exit status of the process. If < 0, the signal causing the process to stop negated.
+     */
+    public static native int waitFor(int processId);
+
+    /** Close a file descriptor through the close(2) system call. */
+    public static native void close(int fileDescriptor);
+
+}