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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.shell;
import com.cyanogenmod.filemanager.commands.AsyncResultListener;
import com.cyanogenmod.filemanager.commands.SIGNAL;
import com.cyanogenmod.filemanager.commands.WriteExecutable;
import com.cyanogenmod.filemanager.console.CommandNotFoundException;
import com.cyanogenmod.filemanager.console.ExecutionException;
import com.cyanogenmod.filemanager.console.InsufficientPermissionsException;
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/>
*
* {@link "http://unixhelp.ed.ac.uk/CGI/man-cgi?dd"}
*/
public class WriteCommand extends AsyncResultProgram implements WriteExecutable {
private static final String ID = "write"; //$NON-NLS-1$
private static final long TIMEOUT = 1000L;
/**
* @hide
*/
final Object mWriteSync = new Object();
private boolean mReady;
/**
* @hide
*/
boolean mError;
/**
* Constructor of <code>WriteCommand</code>.
*
* @param file The file where to write the data
* @param asyncResultListener The partial result listener
* @throws InvalidCommandDefinitionException If the command has an invalid definition
*/
public WriteCommand(
String file, AsyncResultListener asyncResultListener)
throws InvalidCommandDefinitionException {
super(ID, asyncResultListener, file);
this.mReady = false;
this.mError = false;
}
/**
* {@inheritDoc}
*/
@Override
public boolean isExpectEnd() {
return false;
}
/**
* {@inheritDoc}
*/
@Override
public OutputStream createOutputStream() throws IOException {
// Wait until command is ready
synchronized (this.mWriteSync) {
if (!this.mReady) {
try {
this.mWriteSync.wait(TIMEOUT);
} catch (Exception e) {/**NON BLOCK**/}
}
}
return getProgramListener().getOutputStream();
}
/**
* {@inheritDoc}
*/
@Override
public void onStartParsePartialResult() {
synchronized (this.mWriteSync) {
this.mReady = true;
this.mWriteSync.notify();
}
}
/**
* {@inheritDoc}
*/
@Override
public void onEndParsePartialResult(boolean cancelled) {/**NON BLOCK**/}
/**
* {@inheritDoc}
*/
@Override
public SIGNAL onRequestEnd() {
try {
if (this.getProgramListener().getOutputStream() != null) {
this.getProgramListener().getOutputStream().flush();
}
} catch (Exception ex) {/**NON BLOCK**/}
try {
Thread.yield();
} catch (Exception ex) {/**NON BLOCK**/}
return null;
}
/**
* {@inheritDoc}
*/
@Override
public void onParsePartialResult(final String partialIn) {/**NON BLOCK**/}
/**
* {@inheritDoc}
*/
@Override
public void onParseErrorPartialResult(String partialErr) {/**NON BLOCK**/}
/**
* {@inheritDoc}
*/
@Override
public boolean isIgnoreShellStdErrCheck() {
return true;
}
/**
* {@inheritDoc}
*/
@Override
public void checkExitCode(int exitCode)
throws InsufficientPermissionsException, CommandNotFoundException, ExecutionException {
//Ignore exit code 143 (cancelled)
//Ignore exit code 137 (kill -9)
if (exitCode != 0 && exitCode != 143 && exitCode != 137) {
throw new ExecutionException(
"exitcode != 0 && != 143 && != 137"); //$NON-NLS-1$
}
}
}
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