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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.ProcessIdExecutable;
import com.cyanogenmod.filemanager.console.CommandNotFoundException;
import com.cyanogenmod.filemanager.console.ExecutionException;
import com.cyanogenmod.filemanager.console.InsufficientPermissionsException;
import java.io.BufferedReader;
import java.io.IOException;
import java.io.StringReader;
import java.text.ParseException;
/**
* A class for retrieve the process identifier of a program.
*
* {@link "http://unixhelp.ed.ac.uk/CGI/man-cgi?ps"}
*/
public class ProcessIdCommand extends SyncResultProgram implements ProcessIdExecutable {
private static final String ID_SHELL = "pid_shell"; //$NON-NLS-1$
private static final String ID_CMD = "pid_cmd"; //$NON-NLS-1$
private Integer mPID;
/**
* Constructor of <code>ProcessIdCommand</code>.<br/>
* Use this to retrieve the PID of a shell.
*
* @throws InvalidCommandDefinitionException If the command has an invalid definition
*/
public ProcessIdCommand() throws InvalidCommandDefinitionException {
super(ID_SHELL);
}
/**
* Constructor of <code>ProcessIdCommand</code>.<br/>
* Use this to retrieve the PID of a command running on a shell.
*
* @param pid The process identifier of the shell when the process is running
* @param processName The process name
* @throws InvalidCommandDefinitionException If the command has an invalid definition
*/
public ProcessIdCommand(int pid, String processName) throws InvalidCommandDefinitionException {
super(ID_CMD, new String[]{processName, String.valueOf(pid)});
}
/**
* {@inheritDoc}
*/
@Override
public void parse(String in, String err) throws ParseException {
//Release the return object
this.mPID = null;
// Check the in buffer to extract information
BufferedReader br = null;
try {
br = new BufferedReader(new StringReader(in));
String szLine = br.readLine();
if (szLine == null) {
throw new ParseException("no information", 0); //$NON-NLS-1$
}
//Get the PID
this.mPID = Integer.valueOf(szLine.trim());
} catch (IOException ioEx) {
throw new ParseException(ioEx.getMessage(), 0);
} catch (ParseException pEx) {
throw pEx;
} catch (Exception ex) {
throw new ParseException(ex.getMessage(), 0);
} finally {
try {
if (br != null) {
br.close();
}
} catch (Throwable ex) {
/**NON BLOCK**/
}
}
}
/**
* {@inheritDoc}
*/
@Override
public Integer getResult() {
return this.mPID;
}
/**
* {@inheritDoc}
*/
@Override
public void checkExitCode(int exitCode)
throws InsufficientPermissionsException, CommandNotFoundException,
ExecutionException {
/**NON BLOCK**/
}
}
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