com.googlecode.d2j.util.zip.AutoSTOREDZipOutputStream Maven / Gradle / Ivy
/*
* dex2jar - Tools to work with android .dex and java .class files
* Copyright (c) 2009-2014 Panxiaobo
*
* 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.googlecode.d2j.util.zip;
import java.io.IOException;
import java.io.OutputStream;
import java.util.zip.*;
import java.util.zip.ZipEntry;
/**
* Auto calc size/crc for STORED
*/
public class AutoSTOREDZipOutputStream extends ZipOutputStream {
public AutoSTOREDZipOutputStream(OutputStream out) {
super(out);
}
private CRC32 crc = new CRC32();
private ZipEntry delayedEntry;
private AccessBufByteArrayOutputStream delayedOutputStream;
@Override
public void putNextEntry(ZipEntry e) throws IOException {
if (e.getMethod() != ZipEntry.STORED) {
super.putNextEntry(e);
} else {
delayedEntry = e;
if (delayedOutputStream == null) {
delayedOutputStream = new AccessBufByteArrayOutputStream();
}
}
}
@Override
public void closeEntry() throws IOException {
ZipEntry delayedEntry = this.delayedEntry;
if (delayedEntry != null) {
AccessBufByteArrayOutputStream delayedOutputStream = this.delayedOutputStream;
byte[] buf = delayedOutputStream.getBuf();
int size = delayedOutputStream.size();
delayedEntry.setSize(size);
delayedEntry.setCompressedSize(size);
crc.reset();
crc.update(buf, 0, size);
delayedEntry.setCrc(crc.getValue());
super.putNextEntry(delayedEntry);
super.write(buf, 0, size);
this.delayedEntry = null;
delayedOutputStream.reset();
}
super.closeEntry();
}
@Override
public synchronized void write(byte[] b, int off, int len) throws IOException {
if (delayedEntry != null) {
delayedOutputStream.write(b, off, len);
} else {
super.write(b, off, len);
}
}
@Override
public void write(int b) throws IOException {
if (delayedEntry != null) {
delayedOutputStream.write(b);
} else {
super.write(b);
}
}
@Override
public void write(byte[] b) throws IOException {
if (delayedEntry != null) {
delayedOutputStream.write(b);
} else {
super.write(b);
}
}
@Override
public void close() throws IOException {
delayedOutputStream = null;
super.close();
}
}