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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.java;
import android.util.Log;
import com.cyanogenmod.filemanager.commands.DiskUsageExecutable;
import com.cyanogenmod.filemanager.console.ExecutionException;
import com.cyanogenmod.filemanager.console.InsufficientPermissionsException;
import com.cyanogenmod.filemanager.console.NoSuchFileOrDirectory;
import com.cyanogenmod.filemanager.model.DiskUsage;
import com.cyanogenmod.filemanager.model.MountPoint;
import java.io.File;
import java.util.ArrayList;
import java.util.List;
/**
* A class for get information about disk usage.
*/
public class DiskUsageCommand extends Program implements DiskUsageExecutable {
private static final String TAG = "DiskUsageCommand"; //$NON-NLS-1$
private final String mMountsFile;
private final String mSrc;
private final List<DiskUsage> mDisksUsage;
/**
* Constructor of <code>DiskUsageCommand</code>.
*
* @param mountsFile The system mounts file
*/
public DiskUsageCommand(String mountsFile) {
this(mountsFile, null);
}
/**
* Constructor of <code>DiskUsageCommand</code>.
*
* @param mountsFile The system mounts file
* @param dir The directory of which obtain its disk usage
*/
public DiskUsageCommand(String mountsFile, String dir) {
super();
this.mMountsFile = mountsFile;
this.mSrc = null;
this.mDisksUsage = new ArrayList<DiskUsage>();
}
/**
* {@inheritDoc}
*/
@Override
public List<DiskUsage> getResult() {
return this.mDisksUsage;
}
/**
* {@inheritDoc}
*/
@Override
public void execute()
throws InsufficientPermissionsException, NoSuchFileOrDirectory, ExecutionException {
if (isTrace()) {
Log.v(TAG,
String.format("Getting usage for: %s", //$NON-NLS-1$
this.mSrc == null ? "all" : this.mSrc)); //$NON-NLS-1$
}
if (this.mSrc == null) {
// Retrieve the mount points
MountPointInfoCommand cmd = new MountPointInfoCommand(this.mMountsFile);
cmd.setBufferSize(getBufferSize());
cmd.setTrace(isTrace());
cmd.execute();
List<MountPoint> mp = cmd.getResult();
// Get every disk usage
for (int i = 0; i < mp.size(); i++) {
File root = new File(mp.get(i).getMountPoint());
this.mDisksUsage.add(createDiskUsuage(root));
}
} else {
this.mDisksUsage.add(createDiskUsuage(new File(this.mSrc)));
}
if (isTrace()) {
Log.v(TAG, "Result: OK"); //$NON-NLS-1$
}
}
/**
* Method that create a reference of the disk usage from the root file
*
* @param root The root file
* @return DiskUsage The disk usage
*/
private DiskUsage createDiskUsuage(File file) {
DiskUsage du = new DiskUsage(
file.getAbsolutePath(),
file.getTotalSpace(),
file.getTotalSpace() - file.getFreeSpace(),
file.getFreeSpace());
if (isTrace()) {
Log.v(TAG, du.toString());
}
return du;
}
}
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