// Copyright 2016 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.dexer;
import com.android.dex.Dex;
import com.google.common.io.ByteStreams;
import java.io.Closeable;
import java.io.IOException;
import java.io.InputStream;
import java.util.zip.ZipEntry;
import java.util.zip.ZipOutputStream;
/**
* Wrapper around a {@link ZipOutputStream} to simplify writing archives with {@code .dex} files.
* Adding files generally requires a {@link ZipEntry} in order to control timestamps.
*/
class DexFileArchive implements Closeable {
private final ZipOutputStream out;
public DexFileArchive(ZipOutputStream out) {
this.out = out;
}
/**
* Copies the content of the given {@link InputStream} into an entry with the given details.
*/
public DexFileArchive copy(ZipEntry entry, InputStream in) throws IOException {
out.putNextEntry(entry);
ByteStreams.copy(in, out);
out.closeEntry();
return this;
}
/**
* Adds a {@code .dex} file with the given details.
*/
public DexFileArchive addFile(ZipEntry entry, Dex dex) throws IOException {
entry.setSize(dex.getLength());
out.putNextEntry(entry);
dex.writeTo(out);
out.closeEntry();
return this;
}
@Override
public void close() throws IOException {
out.close();
}
}