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/*
* Copyright (C) 2012 The Android Open Source 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.android.providers.contacts.debug;
import android.content.Context;
import android.media.MediaScannerConnection;
import android.util.Log;
import com.google.common.io.Closeables;
import java.io.File;
import java.io.FileInputStream;
import java.io.FileOutputStream;
import java.io.IOException;
import java.io.InputStream;
import java.util.zip.ZipEntry;
import java.util.zip.ZipOutputStream;
/**
* Compress all files under the app data dir into a single zip file.
*/
public class DataExporter {
private static String TAG = "DataExporter";
public static final String ZIP_MIME_TYPE = "application/zip";
/**
* Compress all files under the app data dir into a single zip file.
*/
public static void exportData(Context context, File outFile) throws IOException {
outFile.delete();
Log.i(TAG, "Outfile=" + outFile.getAbsolutePath());
final ZipOutputStream os = new ZipOutputStream(new FileOutputStream(outFile));
try {
addDirectory(os, context.getFilesDir().getParentFile(), "contacts-files");
} finally {
Closeables.closeQuietly(os);
}
// Tell the media scanner about the new file so that it is
// immediately available to the user.
MediaScannerConnection.scanFile(context,
new String[] {outFile.toString()},
new String[] {ZIP_MIME_TYPE}, null);
}
/**
* Add all files under {@code current} to {@code os} zip stream
*/
private static void addDirectory(ZipOutputStream os, File current, String storedPath)
throws IOException {
for (File child : current.listFiles()) {
final String childStoredPath = storedPath + "/" + child.getName();
if (child.isDirectory()) {
addDirectory(os, child, childStoredPath);
} else if (child.isFile()) {
addFile(os, child, childStoredPath);
} else {
// Shouldn't happen; skip.
}
}
}
/**
* Add a single file {@code current} to {@code os} zip stream using the file name
* {@code storedPath}.
*/
private static void addFile(ZipOutputStream os, File current, String storedPath)
throws IOException {
final InputStream is = new FileInputStream(current);
os.putNextEntry(new ZipEntry(storedPath));
final byte[] buf = new byte[32 * 1024];
int totalLen = 0;
while (true) {
int len = is.read(buf);
if (len <= 0) {
break;
}
os.write(buf, 0, len);
totalLen += len;
}
os.closeEntry();
Log.i(TAG, "Added " + current.getAbsolutePath() + " as " + storedPath +
" (" + totalLen + " bytes)");
}
}
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