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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.DiskUsageExecutable;
import com.cyanogenmod.filemanager.console.CommandNotFoundException;
import com.cyanogenmod.filemanager.console.ExecutionException;
import com.cyanogenmod.filemanager.console.InsufficientPermissionsException;
import com.cyanogenmod.filemanager.model.DiskUsage;
import com.cyanogenmod.filemanager.util.ParseHelper;
import java.io.BufferedReader;
import java.io.IOException;
import java.io.StringReader;
import java.text.ParseException;
import java.util.ArrayList;
import java.util.List;
/**
* A class for get information about disk usage.
*
* {@link "http://unixhelp.ed.ac.uk/CGI/man-cgi?df"}
*/
public class DiskUsageCommand extends SyncResultProgram implements DiskUsageExecutable {
private static final String ID = "diskusage"; //$NON-NLS-1$
private static final String ID_ALL = "diskusageall"; //$NON-NLS-1$
private final List<DiskUsage> mDisksUsage;
/**
* Constructor of <code>DiskUsageCommand</code>.
*
* @throws InvalidCommandDefinitionException If the command has an invalid definition
*/
public DiskUsageCommand() throws InvalidCommandDefinitionException {
super(ID_ALL, new String[]{});
this.mDisksUsage = new ArrayList<DiskUsage>();
}
/**
* Constructor of <code>DiskUsageCommand</code>.
*
* @param dir The directory of which obtain its disk usage
* @throws InvalidCommandDefinitionException If the command has an invalid definition
*/
public DiskUsageCommand(String dir) throws InvalidCommandDefinitionException {
super(ID, new String[]{dir});
this.mDisksUsage = new ArrayList<DiskUsage>();
}
/**
* {@inheritDoc}
*/
@Override
public void parse(String in, String err) throws ParseException {
//Release the array
this.mDisksUsage.clear();
// Check the in buffer to extract information
BufferedReader br = null;
int line = 0;
try {
br = new BufferedReader(new StringReader(in));
String szLine = br.readLine(); //The first line must be ignored
while ((szLine = br.readLine()) != null) {
//Checks that there is some text in the line. Otherwise ignore it
if (szLine.trim().length() == 0) {
break;
}
//Parse the line into a DiskUsage reference
try {
this.mDisksUsage.add(ParseHelper.toDiskUsage(szLine));
} catch (ParseException pEx) {
//Ignore
}
line++;
}
} catch (IOException ioEx) {
throw new ParseException(ioEx.getMessage(), line);
} catch (Exception ex) {
throw new ParseException(ex.getMessage(), line);
} finally {
try {
if (br != null) {
br.close();
}
} catch (Throwable ex) {
/**NON BLOCK**/
}
}
}
/**
* {@inheritDoc}
*/
@Override
public List<DiskUsage> getResult() {
return this.mDisksUsage;
}
/**
* {@inheritDoc}
*/
@Override
public void checkExitCode(int exitCode)
throws InsufficientPermissionsException, CommandNotFoundException, ExecutionException {
if (exitCode != 0 && exitCode != 1) { //Permission denied
throw new ExecutionException("exitcode != 0 && != 1"); //$NON-NLS-1$
}
}
/**
* {@inheritDoc}
*/
@Override
public boolean isIgnoreShellStdErrCheck() {
return true;
}
}
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