Some small binder shell command improvements.

    /**

     * Handle a call to {@link #shellCommand}.  The default implementation simply prints

     * an error message.  Override and replace with your own.

     * <p class="caution">Note: no permission checking is done before calling this method; you must

     * apply any security checks as appropriate for the command being executed.

     * Consider using {@link ShellCommand} to help in the implementation.</p>

     * @hide

     */

    public void onShellCommand(FileDescriptor in, FileDescriptor out, FileDescriptor err,

import java.io.FileInputStream;

import java.io.FileOutputStream;

import java.io.InputStream;

import java.io.OutputStream;

import java.io.PrintWriter;

/**

 * Helper for implementing {@link Binder#onShellCommand Binder.onShellCommand}.

 * @hide

 */

public abstract class ShellCommand {

    private int mArgPos;

    private String mCurArgData;

    private FileInputStream mFileIn;

    private FileOutputStream mFileOut;

    private FileOutputStream mFileErr;

    private FastPrintWriter mOutPrintWriter;

    private FastPrintWriter mErrPrintWriter;

    private InputStream mInputStream;

        mCmd = null;

        mArgPos = firstArgPos;

        mCurArgData = null;

        mFileIn = null;

        mFileOut = null;

        mFileErr = null;

        mOutPrintWriter = null;

        mErrPrintWriter = null;

        mInputStream = null;

    }

    public int exec(Binder target, FileDescriptor in, FileDescriptor out, FileDescriptor err,

        return res;

    }

    /**

     * Return direct raw access (not buffered) to the command's output data stream.

     */

    public OutputStream getRawOutputStream() {

        if (mFileOut == null) {

            mFileOut = new FileOutputStream(mOut);

        }

        return mFileOut;

    }

    /**

     * Return a PrintWriter for formatting output to {@link #getRawOutputStream()}.

     */

    public PrintWriter getOutPrintWriter() {

        if (mOutPrintWriter == null) {

            FileOutputStream fout = new FileOutputStream(mOut);

            mOutPrintWriter = new FastPrintWriter(fout);

            mOutPrintWriter = new FastPrintWriter(getRawOutputStream());

        }

        return mOutPrintWriter;

    }

    /**

     * Return direct raw access (not buffered) to the command's error output data stream.

     */

    public OutputStream getRawErrorStream() {

        if (mFileErr == null) {

            mFileErr = new FileOutputStream(mErr);

        }

        return mFileErr;

    }

    /**

     * Return a PrintWriter for formatting output to {@link #getRawErrorStream()}.

     */

    public PrintWriter getErrPrintWriter() {

        if (mErr == null) {

            return getOutPrintWriter();

        }

        if (mErrPrintWriter == null) {

            FileOutputStream fout = new FileOutputStream(mErr);

            mErrPrintWriter = new FastPrintWriter(fout);

            mErrPrintWriter = new FastPrintWriter(getRawErrorStream());

        }

        return mErrPrintWriter;

    }

    public InputStream getInputStream() {

    /**

     * Return direct raw access (not buffered) to the command's input data stream.

     */

    public InputStream getRawInputStream() {

        if (mFileIn == null) {

            mFileIn = new FileInputStream(mIn);

        }

        return mFileIn;

    }

    /**

     * Return buffered access to the command's {@link #getRawInputStream()}.

     */

    public InputStream getBufferedInputStream() {

        if (mInputStream == null) {

            mInputStream = new BufferedInputStream(new FileInputStream(mIn));

            mInputStream = new BufferedInputStream(getRawInputStream());

        }

        return mInputStream;

    }

        return -1;

    }

    /**

     * Implement parsing and execution of a command.  If it isn't a command you understand,

     * call {@link #handleDefaultCommands(String)} and return its result as a last resort.

     * User {@link #getNextOption()}, {@link #getNextArg()}, and {@link #getNextArgRequired()}

     * to process additional command line arguments.  Command output can be written to

     * {@link #getOutPrintWriter()} and errors to {@link #getErrPrintWriter()}.

     *

     * <p class="caution">Note that no permission checking has been done before entering this function,

     * so you need to be sure to do your own security verification for any commands you

     * are executing.  The easiest way to do this is to have the ShellCommand contain

     * only a reference to your service's aidl interface, and do all of your command

     * implementations on top of that -- that way you can rely entirely on your executing security

     * code behind that interface.</p>

     *

     * @param cmd The first command line argument representing the name of the command to execute.

     * @return Return the command result; generally 0 or positive indicates success and

     * negative values indicate error.

     */

    public abstract int onCommand(String cmd);

    /**

     * Implement this to print help text about your command to {@link #getOutPrintWriter()}.

     */

    public abstract void onHelp();

}

            if (inPath != null) {

                in = new FileInputStream(inPath);

            } else {

                in = new SizedInputStream(getInputStream(), sizeBytes);

                in = new SizedInputStream(getRawInputStream(), sizeBytes);

            }

            out = session.openWrite(splitName, 0, sizeBytes);