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/*
* Copyright (C) 2012 The CyanogenMod 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.
*/
package com.cyanogenmod.filemanager.commands.secure;
import android.util.Log;
import com.cyanogenmod.filemanager.commands.AsyncResultListener;
import com.cyanogenmod.filemanager.commands.WriteExecutable;
import com.cyanogenmod.filemanager.console.ExecutionException;
import com.cyanogenmod.filemanager.console.NoSuchFileOrDirectory;
import com.cyanogenmod.filemanager.console.secure.SecureConsole;
import de.schlichtherle.truezip.file.TFile;
import de.schlichtherle.truezip.file.TFileOutputStream;
import java.io.BufferedOutputStream;
import java.io.IOException;
import java.io.OutputStream;
/**
* A class for write data to disk.<br/>
* <br/>
* User MUST call the {@link #createOutputStream()} to get the output stream where
* write the data.<br/>. When no more exist then user MUST call the onEnd method
* of the asynchronous listener.<br/>
*/
public class WriteCommand extends Program implements WriteExecutable {
private static final String TAG = "WriteCommand"; //$NON-NLS-1$
private final String mFile;
private BufferedOutputStream mBuffer;
private final AsyncResultListener mAsyncResultListener;
private boolean mCancelled;
private final Object mSync = new Object();
private static final long TIMEOUT = 1000L;
private final Object mWriteSync = new Object();
private boolean mReady;
/**
* Constructor of <code>WriteCommand</code>.
*
* @param console The current console
* @param file The file where to write the data
* @param asyncResultListener The partial result listener
*/
public WriteCommand(SecureConsole console, String file,
AsyncResultListener asyncResultListener) {
super(console);
this.mFile = file;
this.mAsyncResultListener = asyncResultListener;
this.mCancelled = false;
this.mReady = false;
}
/**
* {@inheritDoc}
*/
@Override
public boolean isAsynchronous() {
return true;
}
/**
* {@inheritDoc}
*/
@Override
public OutputStream createOutputStream() throws IOException {
try {
// Wait until command is ready
synchronized (this.mWriteSync) {
if (!this.mReady) {
try {
this.mWriteSync.wait(TIMEOUT);
} catch (Exception e) {/**NON BLOCK**/}
}
}
TFile f = getConsole().buildRealFile(mFile);
this.mBuffer = new BufferedOutputStream(new TFileOutputStream(f), getBufferSize());
return this.mBuffer;
} catch (IOException ioEx) {
if (isTrace()) {
Log.e(TAG, "Result: FAILED. IOException", ioEx); //$NON-NLS-1$
}
throw ioEx;
}
}
/**
* {@inheritDoc}
*/
@Override
public void execute() throws NoSuchFileOrDirectory, ExecutionException {
synchronized (this.mSync) {
this.mReady = true;
this.mSync.notify();
}
if (isTrace()) {
Log.v(TAG,
String.format("Writing file %s", this.mFile)); //$NON-NLS-1$
}
if (this.mAsyncResultListener != null) {
this.mAsyncResultListener.onAsyncStart();
}
// Wait the finalization
try {
synchronized (this.mSync) {
this.mSync.wait();
}
} catch (Throwable _throw) {/**NON BLOCK**/}
if (this.mAsyncResultListener != null) {
this.mAsyncResultListener.onAsyncEnd(this.mCancelled);
}
if (this.mAsyncResultListener != null) {
this.mAsyncResultListener.onAsyncExitCode(0);
}
if (isTrace()) {
Log.v(TAG, "Result: OK"); //$NON-NLS-1$
}
}
/**
* {@inheritDoc}
*/
@Override
public boolean isCancelled() {
synchronized (this.mSync) {
return this.mCancelled;
}
}
/**
* {@inheritDoc}
*/
@Override
public boolean cancel() {
closeBuffer();
this.mCancelled = true;
try {
synchronized (this.mSync) {
this.mSync.notify();
}
} catch (Throwable _throw) {/**NON BLOCK**/}
return true;
}
/**
* {@inheritDoc}
*/
@Override
public boolean end() {
closeBuffer();
try {
synchronized (this.mSync) {
this.mSync.notify();
}
} catch (Throwable _throw) {/**NON BLOCK**/}
return true;
}
/**
* Method that close the buffer
*/
private void closeBuffer() {
try {
if (this.mBuffer != null) {
this.mBuffer.close();
}
} catch (Exception ex) {/**NON BLOCK**/}
try {
Thread.yield();
} catch (Exception ex) {/**NON BLOCK**/}
}
/**
* {@inheritDoc}
*/
@Override
public void setOnEndListener(OnEndListener onEndListener) {
//Ignore. Java console don't use this
}
/**
* {@inheritDoc}
*/
@Override
public void setOnCancelListener(OnCancelListener onCancelListener) {
//Ignore. Java console don't use this
}
/**
* {@inheritDoc}
*/
@Override
public boolean isCancellable() {
return true;
}
/**
* {@inheritDoc}
*/
@Override
public AsyncResultListener getAsyncResultListener() {
return this.mAsyncResultListener;
}
}
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