Reformat code project-wide (getting rid of tabs)
This commit is contained in:
Fredrik Fornwall
@@ -19,202 +19,200 @@ import java.util.UUID;
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/**
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* A terminal session, consisting of a process coupled to a terminal interface.
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* <p>
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* <p/>
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* The subprocess will be executed by the constructor, and when the size is made known by a call to
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* {@link #updateSize(int, int)} terminal emulation will begin and threads will be spawned to handle the subprocess I/O.
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* All terminal emulation and callback methods will be performed on the main thread.
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* <p>
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* <p/>
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* The child process may be exited forcefully by using the {@link #finishIfRunning()} method.
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*
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* <p/>
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* NOTE: The terminal session may outlive the EmulatorView, so be careful with callbacks!
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*/
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public final class TerminalSession extends TerminalOutput {
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/** Callback to be invoked when a {@link TerminalSession} changes. */
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public interface SessionChangedCallback {
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void onTextChanged(TerminalSession changedSession);
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/** Callback to be invoked when a {@link TerminalSession} changes. */
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public interface SessionChangedCallback {
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void onTextChanged(TerminalSession changedSession);
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void onTitleChanged(TerminalSession changedSession);
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void onTitleChanged(TerminalSession changedSession);
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void onSessionFinished(TerminalSession finishedSession);
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void onSessionFinished(TerminalSession finishedSession);
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void onClipboardText(TerminalSession session, String text);
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void onClipboardText(TerminalSession session, String text);
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void onBell(TerminalSession session);
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void onBell(TerminalSession session);
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void onColorsChanged(TerminalSession session);
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}
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}
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private static FileDescriptor wrapFileDescriptor(int fileDescriptor) {
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FileDescriptor result = new FileDescriptor();
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try {
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Field descriptorField;
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try {
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descriptorField = FileDescriptor.class.getDeclaredField("descriptor");
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} catch (NoSuchFieldException e) {
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// For desktop java:
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descriptorField = FileDescriptor.class.getDeclaredField("fd");
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}
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descriptorField.setAccessible(true);
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descriptorField.set(result, fileDescriptor);
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} catch (NoSuchFieldException | IllegalAccessException | IllegalArgumentException e) {
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Log.wtf(EmulatorDebug.LOG_TAG, "Error accessing FileDescriptor#descriptor private field", e);
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System.exit(1);
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}
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return result;
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}
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private static FileDescriptor wrapFileDescriptor(int fileDescriptor) {
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FileDescriptor result = new FileDescriptor();
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try {
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Field descriptorField;
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try {
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descriptorField = FileDescriptor.class.getDeclaredField("descriptor");
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} catch (NoSuchFieldException e) {
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// For desktop java:
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descriptorField = FileDescriptor.class.getDeclaredField("fd");
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}
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descriptorField.setAccessible(true);
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descriptorField.set(result, fileDescriptor);
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} catch (NoSuchFieldException | IllegalAccessException | IllegalArgumentException e) {
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Log.wtf(EmulatorDebug.LOG_TAG, "Error accessing FileDescriptor#descriptor private field", e);
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System.exit(1);
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}
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return result;
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}
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private static final int MSG_NEW_INPUT = 1;
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private static final int MSG_PROCESS_EXITED = 4;
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private static final int MSG_NEW_INPUT = 1;
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private static final int MSG_PROCESS_EXITED = 4;
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public final String mHandle = UUID.randomUUID().toString();
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public final String mHandle = UUID.randomUUID().toString();
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TerminalEmulator mEmulator;
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TerminalEmulator mEmulator;
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/**
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* A queue written to from a separate thread when the process outputs, and read by main thread to process by
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* terminal emulator.
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*/
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final ByteQueue mProcessToTerminalIOQueue = new ByteQueue(4096);
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/**
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* A queue written to from the main thread due to user interaction, and read by another thread which forwards by
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* writing to the {@link #mTerminalFileDescriptor}.
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*/
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final ByteQueue mTerminalToProcessIOQueue = new ByteQueue(4096);
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/** Buffer to write translate code points into utf8 before writing to mTerminalToProcessIOQueue */
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private final byte[] mUtf8InputBuffer = new byte[5];
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/**
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* A queue written to from a separate thread when the process outputs, and read by main thread to process by
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* terminal emulator.
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*/
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final ByteQueue mProcessToTerminalIOQueue = new ByteQueue(4096);
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/**
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* A queue written to from the main thread due to user interaction, and read by another thread which forwards by
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* writing to the {@link #mTerminalFileDescriptor}.
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*/
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final ByteQueue mTerminalToProcessIOQueue = new ByteQueue(4096);
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/** Buffer to write translate code points into utf8 before writing to mTerminalToProcessIOQueue */
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private final byte[] mUtf8InputBuffer = new byte[5];
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/** Callback which gets notified when a session finishes or changes title. */
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final SessionChangedCallback mChangeCallback;
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/** Callback which gets notified when a session finishes or changes title. */
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final SessionChangedCallback mChangeCallback;
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/** The pid of the shell process. 0 if not started and -1 if finished running. */
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int mShellPid;
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/** The pid of the shell process. 0 if not started and -1 if finished running. */
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int mShellPid;
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/** The exit status of the shell process. Only valid if ${@link #mShellPid} is -1. */
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int mShellExitStatus;
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/** The exit status of the shell process. Only valid if ${@link #mShellPid} is -1. */
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int mShellExitStatus;
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/**
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* The file descriptor referencing the master half of a pseudo-terminal pair, resulting from calling
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* {@link JNI#createSubprocess(String, String, String[], String[], int[], int, int)}.
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*/
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private int mTerminalFileDescriptor;
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/**
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* The file descriptor referencing the master half of a pseudo-terminal pair, resulting from calling
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* {@link JNI#createSubprocess(String, String, String[], String[], int[], int, int)}.
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*/
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private int mTerminalFileDescriptor;
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/** Set by the application for user identification of session, not by terminal. */
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public String mSessionName;
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/** Set by the application for user identification of session, not by terminal. */
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public String mSessionName;
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@SuppressLint("HandlerLeak")
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final Handler mMainThreadHandler = new Handler() {
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final byte[] mReceiveBuffer = new byte[4 * 1024];
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@SuppressLint("HandlerLeak")
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final Handler mMainThreadHandler = new Handler() {
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final byte[] mReceiveBuffer = new byte[4 * 1024];
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@Override
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public void handleMessage(Message msg) {
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if (msg.what == MSG_NEW_INPUT && isRunning()) {
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int bytesRead = mProcessToTerminalIOQueue.read(mReceiveBuffer, false);
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if (bytesRead > 0) {
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mEmulator.append(mReceiveBuffer, bytesRead);
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notifyScreenUpdate();
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}
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} else if (msg.what == MSG_PROCESS_EXITED) {
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int exitCode = (Integer) msg.obj;
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cleanupResources(exitCode);
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mChangeCallback.onSessionFinished(TerminalSession.this);
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@Override
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public void handleMessage(Message msg) {
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if (msg.what == MSG_NEW_INPUT && isRunning()) {
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int bytesRead = mProcessToTerminalIOQueue.read(mReceiveBuffer, false);
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if (bytesRead > 0) {
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mEmulator.append(mReceiveBuffer, bytesRead);
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notifyScreenUpdate();
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}
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} else if (msg.what == MSG_PROCESS_EXITED) {
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int exitCode = (Integer) msg.obj;
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cleanupResources(exitCode);
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mChangeCallback.onSessionFinished(TerminalSession.this);
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String exitDescription = "\r\n[Process completed";
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if (exitCode > 0) {
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// Non-zero process exit.
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exitDescription += " with code " + exitCode;
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} else if (exitCode < 0) {
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// Negated signal.
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exitDescription += " with signal " + (-exitCode);
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}
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exitDescription += " - press Enter to close]";
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String exitDescription = "\r\n[Process completed";
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if (exitCode > 0) {
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// Non-zero process exit.
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exitDescription += " with code " + exitCode;
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} else if (exitCode < 0) {
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// Negated signal.
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exitDescription += " with signal " + (-exitCode);
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}
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exitDescription += " - press Enter to close]";
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byte[] bytesToWrite = exitDescription.getBytes(StandardCharsets.UTF_8);
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mEmulator.append(bytesToWrite, bytesToWrite.length);
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notifyScreenUpdate();
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}
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}
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};
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byte[] bytesToWrite = exitDescription.getBytes(StandardCharsets.UTF_8);
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mEmulator.append(bytesToWrite, bytesToWrite.length);
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notifyScreenUpdate();
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}
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}
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};
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private final String mShellPath;
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private final String mCwd;
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private final String[] mArgs;
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private final String[] mEnv;
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private final String mShellPath;
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private final String mCwd;
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private final String[] mArgs;
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private final String[] mEnv;
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public TerminalSession(String shellPath, String cwd, String[] args, String[] env, SessionChangedCallback changeCallback) {
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mChangeCallback = changeCallback;
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public TerminalSession(String shellPath, String cwd, String[] args, String[] env, SessionChangedCallback changeCallback) {
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mChangeCallback = changeCallback;
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this.mShellPath = shellPath;
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this.mCwd = cwd;
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this.mArgs = args;
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this.mEnv = env;
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}
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this.mShellPath = shellPath;
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this.mCwd = cwd;
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this.mArgs = args;
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this.mEnv = env;
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}
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/** Inform the attached pty of the new size and reflow or initialize the emulator. */
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public void updateSize(int columns, int rows) {
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if (mEmulator == null) {
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initializeEmulator(columns, rows);
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} else {
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JNI.setPtyWindowSize(mTerminalFileDescriptor, rows, columns);
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mEmulator.resize(columns, rows);
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}
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}
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/** Inform the attached pty of the new size and reflow or initialize the emulator. */
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public void updateSize(int columns, int rows) {
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if (mEmulator == null) {
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initializeEmulator(columns, rows);
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} else {
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JNI.setPtyWindowSize(mTerminalFileDescriptor, rows, columns);
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mEmulator.resize(columns, rows);
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}
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}
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/** The terminal title as set through escape sequences or null if none set. */
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public String getTitle() {
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return (mEmulator == null) ? null : mEmulator.getTitle();
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}
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/** The terminal title as set through escape sequences or null if none set. */
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public String getTitle() {
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return (mEmulator == null) ? null : mEmulator.getTitle();
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}
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/**
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* Set the terminal emulator's window size and start terminal emulation.
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*
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* @param columns
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* The number of columns in the terminal window.
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* @param rows
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* The number of rows in the terminal window.
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*/
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public void initializeEmulator(int columns, int rows) {
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mEmulator = new TerminalEmulator(this, columns, rows, /* transcript= */5000);
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/**
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* Set the terminal emulator's window size and start terminal emulation.
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*
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* @param columns The number of columns in the terminal window.
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* @param rows The number of rows in the terminal window.
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*/
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public void initializeEmulator(int columns, int rows) {
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mEmulator = new TerminalEmulator(this, columns, rows, /* transcript= */5000);
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int[] processId = new int[1];
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mTerminalFileDescriptor = JNI.createSubprocess(mShellPath, mCwd, mArgs, mEnv, processId, rows, columns);
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mShellPid = processId[0];
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int[] processId = new int[1];
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mTerminalFileDescriptor = JNI.createSubprocess(mShellPath, mCwd, mArgs, mEnv, processId, rows, columns);
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mShellPid = processId[0];
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final FileDescriptor terminalFileDescriptorWrapped = wrapFileDescriptor(mTerminalFileDescriptor);
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final FileDescriptor terminalFileDescriptorWrapped = wrapFileDescriptor(mTerminalFileDescriptor);
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new Thread("TermSessionInputReader[pid=" + mShellPid + "]") {
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@Override
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public void run() {
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try (InputStream termIn = new FileInputStream(terminalFileDescriptorWrapped)) {
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final byte[] buffer = new byte[4096];
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while (true) {
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int read = termIn.read(buffer);
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if (read == -1) return;
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if (!mProcessToTerminalIOQueue.write(buffer, 0, read)) return;
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mMainThreadHandler.sendEmptyMessage(MSG_NEW_INPUT);
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}
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} catch (Exception e) {
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// Ignore, just shutting down.
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}
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}
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}.start();
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new Thread("TermSessionInputReader[pid=" + mShellPid + "]") {
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@Override
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public void run() {
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try (InputStream termIn = new FileInputStream(terminalFileDescriptorWrapped)) {
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final byte[] buffer = new byte[4096];
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while (true) {
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int read = termIn.read(buffer);
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if (read == -1) return;
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if (!mProcessToTerminalIOQueue.write(buffer, 0, read)) return;
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mMainThreadHandler.sendEmptyMessage(MSG_NEW_INPUT);
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}
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} catch (Exception e) {
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// Ignore, just shutting down.
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}
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}
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}.start();
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new Thread("TermSessionOutputWriter[pid=" + mShellPid + "]") {
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@Override
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public void run() {
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final byte[] buffer = new byte[4096];
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try (FileOutputStream termOut = new FileOutputStream(terminalFileDescriptorWrapped)) {
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while (true) {
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int bytesToWrite = mTerminalToProcessIOQueue.read(buffer, true);
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if (bytesToWrite == -1) return;
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termOut.write(buffer, 0, bytesToWrite);
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}
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} catch (IOException e) {
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// Ignore.
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}
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}
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}.start();
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new Thread("TermSessionOutputWriter[pid=" + mShellPid + "]") {
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@Override
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public void run() {
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final byte[] buffer = new byte[4096];
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try (FileOutputStream termOut = new FileOutputStream(terminalFileDescriptorWrapped)) {
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while (true) {
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int bytesToWrite = mTerminalToProcessIOQueue.read(buffer, true);
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if (bytesToWrite == -1) return;
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termOut.write(buffer, 0, bytesToWrite);
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}
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} catch (IOException e) {
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// Ignore.
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}
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}
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}.start();
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new Thread("TermSessionWaiter[pid=" + mShellPid + "]") {
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@Override
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@@ -226,63 +224,63 @@ public final class TerminalSession extends TerminalOutput {
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}
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/** Write data to the shell process. */
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@Override
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public void write(byte[] data, int offset, int count) {
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if (mShellPid > 0) mTerminalToProcessIOQueue.write(data, offset, count);
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}
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/** Write data to the shell process. */
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@Override
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public void write(byte[] data, int offset, int count) {
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if (mShellPid > 0) mTerminalToProcessIOQueue.write(data, offset, count);
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}
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/** Write the Unicode code point to the terminal encoded in UTF-8. */
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public void writeCodePoint(boolean prependEscape, int codePoint) {
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if (codePoint > 1114111 || (codePoint >= 0xD800 && codePoint <= 0xDFFF)) {
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// 1114111 (= 2**16 + 1024**2 - 1) is the highest code point, [0xD800,0xDFFF] is the surrogate range.
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throw new IllegalArgumentException("Invalid code point: " + codePoint);
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}
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/** Write the Unicode code point to the terminal encoded in UTF-8. */
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public void writeCodePoint(boolean prependEscape, int codePoint) {
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if (codePoint > 1114111 || (codePoint >= 0xD800 && codePoint <= 0xDFFF)) {
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// 1114111 (= 2**16 + 1024**2 - 1) is the highest code point, [0xD800,0xDFFF] is the surrogate range.
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throw new IllegalArgumentException("Invalid code point: " + codePoint);
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}
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int bufferPosition = 0;
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if (prependEscape) mUtf8InputBuffer[bufferPosition++] = 27;
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int bufferPosition = 0;
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if (prependEscape) mUtf8InputBuffer[bufferPosition++] = 27;
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if (codePoint <= /* 7 bits */0b1111111) {
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mUtf8InputBuffer[bufferPosition++] = (byte) codePoint;
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} else if (codePoint <= /* 11 bits */0b11111111111) {
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/* 110xxxxx leading byte with leading 5 bits */
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mUtf8InputBuffer[bufferPosition++] = (byte) (0b11000000 | (codePoint >> 6));
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if (codePoint <= /* 7 bits */0b1111111) {
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mUtf8InputBuffer[bufferPosition++] = (byte) codePoint;
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} else if (codePoint <= /* 11 bits */0b11111111111) {
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/* 110xxxxx leading byte with leading 5 bits */
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mUtf8InputBuffer[bufferPosition++] = (byte) (0b11000000 | (codePoint >> 6));
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/* 10xxxxxx continuation byte with following 6 bits */
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mUtf8InputBuffer[bufferPosition++] = (byte) (0b10000000 | (codePoint & 0b111111));
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} else if (codePoint <= /* 16 bits */0b1111111111111111) {
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mUtf8InputBuffer[bufferPosition++] = (byte) (0b10000000 | (codePoint & 0b111111));
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} else if (codePoint <= /* 16 bits */0b1111111111111111) {
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/* 1110xxxx leading byte with leading 4 bits */
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mUtf8InputBuffer[bufferPosition++] = (byte) (0b11100000 | (codePoint >> 12));
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mUtf8InputBuffer[bufferPosition++] = (byte) (0b11100000 | (codePoint >> 12));
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/* 10xxxxxx continuation byte with following 6 bits */
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mUtf8InputBuffer[bufferPosition++] = (byte) (0b10000000 | ((codePoint >> 6) & 0b111111));
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mUtf8InputBuffer[bufferPosition++] = (byte) (0b10000000 | ((codePoint >> 6) & 0b111111));
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/* 10xxxxxx continuation byte with following 6 bits */
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mUtf8InputBuffer[bufferPosition++] = (byte) (0b10000000 | (codePoint & 0b111111));
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} else { /* We have checked codePoint <= 1114111 above, so we have max 21 bits = 0b111111111111111111111 */
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mUtf8InputBuffer[bufferPosition++] = (byte) (0b10000000 | (codePoint & 0b111111));
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} else { /* We have checked codePoint <= 1114111 above, so we have max 21 bits = 0b111111111111111111111 */
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/* 11110xxx leading byte with leading 3 bits */
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mUtf8InputBuffer[bufferPosition++] = (byte) (0b11110000 | (codePoint >> 18));
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mUtf8InputBuffer[bufferPosition++] = (byte) (0b11110000 | (codePoint >> 18));
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/* 10xxxxxx continuation byte with following 6 bits */
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mUtf8InputBuffer[bufferPosition++] = (byte) (0b10000000 | ((codePoint >> 12) & 0b111111));
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mUtf8InputBuffer[bufferPosition++] = (byte) (0b10000000 | ((codePoint >> 12) & 0b111111));
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/* 10xxxxxx continuation byte with following 6 bits */
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mUtf8InputBuffer[bufferPosition++] = (byte) (0b10000000 | ((codePoint >> 6) & 0b111111));
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mUtf8InputBuffer[bufferPosition++] = (byte) (0b10000000 | ((codePoint >> 6) & 0b111111));
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/* 10xxxxxx continuation byte with following 6 bits */
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mUtf8InputBuffer[bufferPosition++] = (byte) (0b10000000 | (codePoint & 0b111111));
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}
|
||||
write(mUtf8InputBuffer, 0, bufferPosition);
|
||||
}
|
||||
mUtf8InputBuffer[bufferPosition++] = (byte) (0b10000000 | (codePoint & 0b111111));
|
||||
}
|
||||
write(mUtf8InputBuffer, 0, bufferPosition);
|
||||
}
|
||||
|
||||
public TerminalEmulator getEmulator() {
|
||||
return mEmulator;
|
||||
}
|
||||
public TerminalEmulator getEmulator() {
|
||||
return mEmulator;
|
||||
}
|
||||
|
||||
/** Notify the {@link #mChangeCallback} that the screen has changed. */
|
||||
protected void notifyScreenUpdate() {
|
||||
mChangeCallback.onTextChanged(this);
|
||||
}
|
||||
/** 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();
|
||||
}
|
||||
/** Reset state for terminal emulator state. */
|
||||
public void reset() {
|
||||
mEmulator.reset();
|
||||
notifyScreenUpdate();
|
||||
}
|
||||
|
||||
/** Finish this terminal session by sending SIGKILL to the shell. */
|
||||
public void finishIfRunning() {
|
||||
@@ -295,48 +293,50 @@ public final class TerminalSession extends TerminalOutput {
|
||||
}
|
||||
}
|
||||
|
||||
/** Cleanup resources when the process exits. */
|
||||
void cleanupResources(int exitStatus) {
|
||||
synchronized (this) {
|
||||
mShellPid = -1;
|
||||
mShellExitStatus = exitStatus;
|
||||
}
|
||||
/** 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);
|
||||
}
|
||||
// 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);
|
||||
}
|
||||
@Override
|
||||
public void titleChanged(String oldTitle, String newTitle) {
|
||||
mChangeCallback.onTitleChanged(this);
|
||||
}
|
||||
|
||||
public synchronized boolean isRunning() {
|
||||
return mShellPid != -1;
|
||||
}
|
||||
public synchronized boolean isRunning() {
|
||||
return mShellPid != -1;
|
||||
}
|
||||
|
||||
/** Only valid if not {@link #isRunning()}. */
|
||||
public synchronized int getExitStatus() {
|
||||
return mShellExitStatus;
|
||||
}
|
||||
/** 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 clipboardText(String text) {
|
||||
mChangeCallback.onClipboardText(this, text);
|
||||
}
|
||||
|
||||
@Override
|
||||
public void onBell() {
|
||||
mChangeCallback.onBell(this);
|
||||
}
|
||||
@Override
|
||||
public void onBell() {
|
||||
mChangeCallback.onBell(this);
|
||||
}
|
||||
|
||||
@Override
|
||||
public void onColorsChanged() {
|
||||
mChangeCallback.onColorsChanged(this);
|
||||
}
|
||||
|
||||
public int getPid() { return mShellPid; }
|
||||
public int getPid() {
|
||||
return mShellPid;
|
||||
}
|
||||
|
||||
}
|
||||
|
||||
Reference in New Issue
Block a user