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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.secure;
import android.util.Log;
import com.cyanogenmod.filemanager.commands.AsyncResultListener;
import com.cyanogenmod.filemanager.commands.FolderUsageExecutable;
import com.cyanogenmod.filemanager.console.ExecutionException;
import com.cyanogenmod.filemanager.console.NoSuchFileOrDirectory;
import com.cyanogenmod.filemanager.console.secure.SecureConsole;
import com.cyanogenmod.filemanager.model.FolderUsage;
import com.cyanogenmod.filemanager.util.FileHelper;
import com.cyanogenmod.filemanager.util.MimeTypeHelper;
import com.cyanogenmod.filemanager.util.MimeTypeHelper.MimeTypeCategory;
import de.schlichtherle.truezip.file.TFile;
import java.io.File;
/**
* A class for retrieve the disk usage of a folder.
*/
public class FolderUsageCommand extends Program implements FolderUsageExecutable {
private static final String TAG = "FolderUsage"; //$NON-NLS-1$
private final String mDirectory;
private final AsyncResultListener mAsyncResultListener;
private final FolderUsage mFolderUsage;
private boolean mCancelled;
private boolean mEnded;
private final Object mSync = new Object();
/**
* Constructor of <code>FolderUsageCommand</code>.
*
* @param console The secure console
* @param directory The absolute directory to compute
* @param asyncResultListener The partial result listener
*/
public FolderUsageCommand(SecureConsole console, String directory,
AsyncResultListener asyncResultListener) {
super(console);
this.mDirectory = directory;
this.mAsyncResultListener = asyncResultListener;
this.mFolderUsage = new FolderUsage(directory);
this.mCancelled = false;
this.mEnded = false;
}
/**
* {@inheritDoc}
*/
@Override
public boolean isAsynchronous() {
return true;
}
/**
* {@inheritDoc}
*/
@Override
public FolderUsage getFolderUsage() {
return this.mFolderUsage;
}
/**
* {@inheritDoc}
*/
@Override
public void execute() throws NoSuchFileOrDirectory, ExecutionException {
if (isTrace()) {
Log.v(TAG,
String.format("Computing folder usage for folder %s", //$NON-NLS-1$
this.mDirectory));
}
if (this.mAsyncResultListener != null) {
this.mAsyncResultListener.onAsyncStart();
}
TFile f = getConsole().buildRealFile(mDirectory);
if (!f.exists()) {
if (isTrace()) {
Log.v(TAG, "Result: FAIL. NoSuchFileOrDirectory"); //$NON-NLS-1$
}
if (this.mAsyncResultListener != null) {
this.mAsyncResultListener.onException(new NoSuchFileOrDirectory(this.mDirectory));
}
}
if (!f.isDirectory()) {
if (isTrace()) {
Log.v(TAG, "Result: FAIL. NoSuchFileOrDirectory"); //$NON-NLS-1$
}
if (this.mAsyncResultListener != null) {
this.mAsyncResultListener.onException(
new ExecutionException("path exists but it's not a folder")); //$NON-NLS-1$
}
}
// Compute data recursively
computeRecursive(f);
synchronized (this.mSync) {
this.mEnded = true;
this.mSync.notify();
}
if (this.mAsyncResultListener != null) {
this.mAsyncResultListener.onAsyncEnd(this.mCancelled);
}
if (this.mAsyncResultListener != null) {
this.mAsyncResultListener.onAsyncExitCode(0);
}
if (isTrace()) {
Log.v(TAG, "Result: OK"); //$NON-NLS-1$
}
}
/**
* Method that computes the folder usage recursively
*
* @param folder The folder where to start the computation
*/
private void computeRecursive(TFile folder) {
// Obtains the files and folders of the folders
try {
TFile[] files = folder.listFiles();
int c = 0;
if (files != null) {
int cc = files.length;
for (int i = 0; i < cc; i++) {
if (files[i].isDirectory()) {
this.mFolderUsage.addFolder();
computeRecursive(files[i]);
} else {
this.mFolderUsage.addFile();
// Compute statistics and size
File file = files[i];
String ext = FileHelper.getExtension(file.getName());
MimeTypeCategory category =
MimeTypeHelper.getCategoryFromExt(null,
ext,
file.getAbsolutePath());
this.mFolderUsage.addFileToCategory(category);
this.mFolderUsage.addSize(files[i].length());
}
// Partial notification
if (c % 5 == 0) {
//If a listener is defined, then send the partial result
if (getAsyncResultListener() != null) {
getAsyncResultListener().onPartialResult(this.mFolderUsage);
}
}
// Check if the process was cancelled
try {
synchronized (this.mSync) {
if (this.mCancelled || this.mEnded) {
this.mSync.notify();
break;
}
}
} catch (Exception e) {/**NON BLOCK**/}
}
}
} finally {
//If a listener is defined, then send the partial result
if (getAsyncResultListener() != null) {
getAsyncResultListener().onPartialResult(this.mFolderUsage);
}
}
}
/**
* {@inheritDoc}
*/
@Override
public boolean isCancelled() {
synchronized (this.mSync) {
return this.mCancelled;
}
}
/**
* {@inheritDoc}
*/
@Override
public boolean cancel() {
try {
synchronized (this.mSync) {
if (this.mEnded || this.mCancelled) {
this.mCancelled = true;
return true;
}
this.mCancelled = true;
this.mSync.wait(5000L);
}
} catch (Exception e) {/**NON BLOCK**/}
return true;
}
/**
* {@inheritDoc}
*/
@Override
public boolean end() {
try {
synchronized (this.mSync) {
this.mEnded = true;
this.mSync.wait(5000L);
}
} catch (Exception e) {/**NON BLOCK**/}
return true;
}
/**
* {@inheritDoc}
*/
@Override
public void setOnEndListener(OnEndListener onEndListener) {
//Ignore. secure console don't use this
}
/**
* {@inheritDoc}
*/
@Override
public void setOnCancelListener(OnCancelListener onCancelListener) {
//Ignore. secure console don't use this
}
/**
* {@inheritDoc}
*/
@Override
public boolean isCancellable() {
return true;
}
/**
* {@inheritDoc}
*/
@Override
public AsyncResultListener getAsyncResultListener() {
return this.mAsyncResultListener;
}
}
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