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aapt2: ZipUtils class to replicate the building of final zip

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Connor Tumbleson 2018-02-15 18:05:23 -05:00
parent 574de8db71
commit 8de1354007
1 changed files with 83 additions and 0 deletions
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brut.j.dir/src/main/java/brut/directory/ZipUtils.java Normal file
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/**
* Copyright (C) 2017 Ryszard Wiśniewski <brut.alll@gmail.com>
* Copyright (C) 2017 Connor Tumbleson <connor.tumbleson@gmail.com>
*
* 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 brut.directory;
import brut.common.BrutException;
import brut.util.BrutIO;
import org.apache.commons.io.FilenameUtils;
import org.apache.commons.io.IOUtils;
import java.io.*;
import java.util.Collection;
import java.util.zip.CRC32;
import java.util.zip.ZipEntry;
import java.util.zip.ZipOutputStream;
public class ZipUtils {
private static Collection<String> mDoNotCompress;
public static void zipFolders(final File folder, final File zip, final File assets, final Collection<String> doNotCompress)
throws BrutException, IOException {
mDoNotCompress = doNotCompress;
ZipOutputStream zipOutputStream = new ZipOutputStream(new FileOutputStream(zip));
zipFolders(folder, zipOutputStream);
// We manually set the assets because we need to retain the folder structure
if (assets != null) {
processFolder(assets, zipOutputStream, assets.getPath().length() - 6);
}
zipOutputStream.close();
}
private static void zipFolders(final File folder, final ZipOutputStream outputStream)
throws BrutException, IOException {
processFolder(folder, outputStream, folder.getPath().length() + 1);
}
private static void processFolder(final File folder, final ZipOutputStream zipOutputStream, final int prefixLength)
throws BrutException, IOException {
for (final File file : folder.listFiles()) {
if (file.isFile()) {
final ZipEntry zipEntry = new ZipEntry(BrutIO.sanitizeUnknownFile(folder, file.getPath().substring(prefixLength)));
// aapt binary by default takes in parameters via -0 arsc to list extensions that shouldn't be
// compressed. We will replicate that behavior
final String extension = FilenameUtils.getExtension(file.getAbsolutePath());
if (mDoNotCompress != null && (mDoNotCompress.contains(extension) || mDoNotCompress.contains(zipEntry.getName()))) {
zipEntry.setMethod(ZipEntry.STORED);
zipEntry.setSize(file.length());
BufferedInputStream unknownFile = new BufferedInputStream(new FileInputStream(file));
CRC32 crc = BrutIO.calculateCrc(unknownFile);
zipEntry.setCrc(crc.getValue());
unknownFile.close();
} else {
zipEntry.setMethod(ZipEntry.DEFLATED);
}
zipOutputStream.putNextEntry(zipEntry);
try (FileInputStream inputStream = new FileInputStream(file)) {
IOUtils.copy(inputStream, zipOutputStream);
}
zipOutputStream.closeEntry();
} else if (file.isDirectory()) {
processFolder(file, zipOutputStream, prefixLength);
}
}
}
}