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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.ReadExecutable;
import com.cyanogenmod.filemanager.commands.SIGNAL;
import com.cyanogenmod.filemanager.console.CommandNotFoundException;
import com.cyanogenmod.filemanager.console.ExecutionException;
import com.cyanogenmod.filemanager.console.InsufficientPermissionsException;
/**
* A class for read a file
*
* {@link "http://unixhelp.ed.ac.uk/CGI/man-cgi?cat"}
*/
public class ReadCommand extends AsyncResultProgram implements ReadExecutable {
private static final String ID = "read"; //$NON-NLS-1$
/**
* Constructor of <code>ExecCommand</code>.
*
* @param file The file to read
* @param asyncResultListener The partial result listener
* @throws InvalidCommandDefinitionException If the command has an invalid definition
*/
public ReadCommand(
String file, AsyncResultListener asyncResultListener)
throws InvalidCommandDefinitionException {
super(ID, asyncResultListener, new String[]{file});
}
/**
* {@inheritDoc}
*/
@Override
public void onStartParsePartialResult() {/**NON BLOCK**/}
/**
* {@inheritDoc}
*/
@Override
public void onEndParsePartialResult(boolean cancelled) {/**NON BLOCK**/}
/**
* {@inheritDoc}
*/
@Override
public void onParsePartialResult(byte[] in) {
//If a listener is defined, then send the partial result
if (in != null && in.length > 0) {
if (getAsyncResultListener() != null) {
getAsyncResultListener().onPartialResult(in);
}
}
}
/**
* {@inheritDoc}
*/
@Override
public void onParseErrorPartialResult(byte[] partialErr) {/**NON BLOCK**/}
/**
* {@inheritDoc}
*/
@Override
public SIGNAL onRequestEnd() {
return null;
}
/**
* {@inheritDoc}
*/
@Override
public boolean isIgnoreShellStdErrCheck() {
return true;
}
/**
* {@inheritDoc}
*/
@Override
public boolean parseOnlyCompleteLines() {
return false;
}
/**
* {@inheritDoc}
*/
@Override
public void checkExitCode(int exitCode)
throws InsufficientPermissionsException, CommandNotFoundException, ExecutionException {
// We have not privileges to read the file
if (exitCode == 1) {
throw new InsufficientPermissionsException();
}
//Ignore exit code 143 (cancelled)
//Ignore exit code 137 (kill -9)
if (exitCode != 0 && exitCode != 143 && exitCode != 137) {
throw new ExecutionException(
"exitcode != 0 && && exitCode != 1 && != 143 && != 137"); //$NON-NLS-1$
}
}
}
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