85 lines
3.6 KiB
Java
85 lines
3.6 KiB
Java
/**
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* Copyright (C) 2017 Ryszard Wiśniewski <brut.alll@gmail.com>
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* Copyright (C) 2017 Connor Tumbleson <connor.tumbleson@gmail.com>
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*
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* Licensed under the Apache License, Version 2.0 (the "License");
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* you may not use this file except in compliance with the License.
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* You may obtain a copy of the License at
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*
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* http://www.apache.org/licenses/LICENSE-2.0
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*
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* Unless required by applicable law or agreed to in writing, software
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* distributed under the License is distributed on an "AS IS" BASIS,
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* WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
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* See the License for the specific language governing permissions and
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* limitations under the License.
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*/
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package brut.directory;
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import brut.common.BrutException;
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import brut.util.BrutIO;
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import org.apache.commons.io.FilenameUtils;
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import org.apache.commons.io.IOUtils;
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import java.io.*;
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import java.util.Collection;
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import java.util.zip.CRC32;
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import java.util.zip.ZipEntry;
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import java.util.zip.ZipOutputStream;
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public class ZipUtils {
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private static Collection<String> mDoNotCompress;
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public static void zipFolders(final File folder, final File zip, final File assets, final Collection<String> doNotCompress)
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throws BrutException, IOException {
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mDoNotCompress = doNotCompress;
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ZipOutputStream zipOutputStream = new ZipOutputStream(new FileOutputStream(zip));
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zipFolders(folder, zipOutputStream);
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// We manually set the assets because we need to retain the folder structure
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if (assets != null) {
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processFolder(assets, zipOutputStream, assets.getPath().length() - 6);
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}
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zipOutputStream.close();
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}
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private static void zipFolders(final File folder, final ZipOutputStream outputStream)
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throws BrutException, IOException {
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processFolder(folder, outputStream, folder.getPath().length() + 1);
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}
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private static void processFolder(final File folder, final ZipOutputStream zipOutputStream, final int prefixLength)
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throws BrutException, IOException {
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for (final File file : folder.listFiles()) {
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if (file.isFile()) {
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final String normalizedPath = BrutIO.normalizePath(file.getPath().substring(prefixLength));
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final ZipEntry zipEntry = new ZipEntry(BrutIO.sanitizeUnknownFile(folder, normalizedPath));
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// aapt binary by default takes in parameters via -0 arsc to list extensions that shouldn't be
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// compressed. We will replicate that behavior
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final String extension = FilenameUtils.getExtension(file.getAbsolutePath());
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if (mDoNotCompress != null && (mDoNotCompress.contains(extension) || mDoNotCompress.contains(zipEntry.getName()))) {
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zipEntry.setMethod(ZipEntry.STORED);
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zipEntry.setSize(file.length());
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BufferedInputStream unknownFile = new BufferedInputStream(new FileInputStream(file));
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CRC32 crc = BrutIO.calculateCrc(unknownFile);
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zipEntry.setCrc(crc.getValue());
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unknownFile.close();
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} else {
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zipEntry.setMethod(ZipEntry.DEFLATED);
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}
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zipOutputStream.putNextEntry(zipEntry);
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try (FileInputStream inputStream = new FileInputStream(file)) {
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IOUtils.copy(inputStream, zipOutputStream);
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}
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zipOutputStream.closeEntry();
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} else if (file.isDirectory()) {
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processFolder(file, zipOutputStream, prefixLength);
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}
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}
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}
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}
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