| // Copyright 2020 The Bazel Authors. All rights reserved. |
| // |
| // 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.google.devtools.build.android.r8; |
| |
| import com.android.tools.r8.ByteDataView; |
| import com.google.common.io.ByteStreams; |
| import java.io.IOException; |
| import java.io.InputStream; |
| import java.util.zip.CRC32; |
| import java.util.zip.ZipEntry; |
| import java.util.zip.ZipOutputStream; |
| |
| class ZipUtils { |
| static void addEntry(String name, InputStream stream, ZipOutputStream zip) throws IOException { |
| ZipUtils.addEntry(name, ByteStreams.toByteArray(stream), ZipEntry.STORED, zip); |
| } |
| |
| static void addEntry(String name, byte[] bytes, int compressionMethod, ZipOutputStream zip) |
| throws IOException { |
| CRC32 crc = new CRC32(); |
| crc.update(bytes); |
| ZipEntry entry = createEntry(name, bytes.length, crc.getValue(), compressionMethod); |
| zip.putNextEntry(entry); |
| zip.write(bytes); |
| zip.closeEntry(); |
| } |
| |
| static void writeToZipStream( |
| String name, ByteDataView content, int compressionMethod, ZipOutputStream zip) |
| throws IOException { |
| byte[] buffer = content.getBuffer(); |
| int offset = content.getOffset(); |
| int length = content.getLength(); |
| CRC32 crc = new CRC32(); |
| crc.update(buffer, offset, length); |
| ZipEntry entry = createEntry(name, length, crc.getValue(), compressionMethod); |
| zip.putNextEntry(entry); |
| zip.write(buffer, offset, length); |
| zip.closeEntry(); |
| } |
| |
| private static ZipEntry createEntry(String name, int length, long crc, int compressionMethod) { |
| ZipEntry entry = new ZipEntry(name); |
| entry.setMethod(compressionMethod); |
| entry.setSize(length); |
| entry.setCrc(crc); |
| entry.setTime(0); |
| return entry; |
| } |
| |
| private ZipUtils() {} |
| } |