分离自Ant的ZIP包可解决中文文件名处理问题

/* * Licensed to the Apache Software Foundation (ASF) under one or more * contributor license agreements. See the NOTICE file distributed with * this work for additional information regarding copyright ownership. * The ASF licenses this file to You 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 org.apache.tools.zip; import java.io.File; import java.io.FileOutputStream; import java.io.FilterOutputStream; import java.io.IOException; import java.io.OutputStream; import java.io.RandomAccessFile; import java.io.UnsupportedEncodingException; import java.util.Date; import java.util.Hashtable; import java.util.Vector; import java.util.zip.CRC32; import java.util.zip.Deflater; import java.util.zip.ZipException; /** * Reimplementation of {@link java.util.zip.ZipOutputStream * java.util.zip.ZipOutputStream} that does handle the extended * functionality of this package, especially internal/external file * attributes and extra fields with different layouts for local file * data and central directory entries. * * <p>This class will try to use {@link java.io.RandomAccessFile * RandomAccessFile} when you know that the output is going to go to a * file.</p> * * <p>If RandomAccessFile cannot be used, this implementation will use * a Data Descriptor to store size and CRC information for {@link * #DEFLATED DEFLATED} entries, this means, you don't need to * calculate them yourself. Unfortunately this is not possible for * the {@link #STORED STORED} method, here setting the CRC and * uncompressed size information is required before {@link * #putNextEntry putNextEntry} can be called.</p> * */ public class ZipOutputStream extends FilterOutputStream { /** * Compression method for deflated entries. * * @since 1.1 */ public static final int DEFLATED = java.util.zip.ZipEntry.DEFLATED; /** * Default compression level for deflated entries. * * @since Ant 1.7 */ public static final int DEFAULT_COMPRESSION = Deflater.DEFAULT_COMPRESSION; /** * Compression method for stored entries. * * @since 1.1 */ public static final int STORED = java.util.zip.ZipEntry.STORED; /** * Current entry. * * @since 1.1 */ private ZipEntry entry; /** * The file comment. * * @since 1.1 */ private String comment = ""; /** * Compression level for next entry. * * @since 1.1 */ private int level = DEFAULT_COMPRESSION; /** * Has the compression level changed when compared to the last * entry? * * @since 1.5 */ private boolean hasCompressionLevelChanged = false; /** * Default compression method for next entry. * * @since 1.1 */ private int method = java.util.zip.ZipEntry.DEFLATED; /** * List of ZipEntries written so far. * * @since 1.1 */ private Vector entries = new Vector(); /** * CRC instance to avoid parsing DEFLATED data twice. * * @since 1.1 */ private CRC32 crc = new CRC32(); /** * Count the bytes written to out. * * @since 1.1 */ private long written = 0; /** * Data for local header data * * @since 1.1 */ private long dataStart = 0; /** * Offset for CRC entry in the local file header data for the * current entry starts here. * * @since 1.15 */ private long localDataStart = 0; /** * Start of central directory. * * @since 1.1 */ private long cdOffset = 0; /** * Length of central directory. * * @since 1.1 */ private long cdLength = 0; /** * Helper, a 0 as ZipShort. * * @since 1.1 */ private static final byte[] ZERO = {0, 0}; /** * Helper, a 0 as ZipLong. * * @since 1.1 */ private static final byte[] LZERO = {0, 0, 0, 0}; /** * Holds the offsets of the LFH starts for each entry. * * @since 1.1 */ private Hashtable offsets = new Hashtable(); /** * The encoding to use for filenames and the file comment. * * <p>For a list of possible values see <a * href="http://java.sun.com/j2se/1.5.0/docs/guide/intl/encoding.doc.html">http://java.sun.com/j2se/1.5.0/docs/guide/intl/encoding.doc.html</a>. * Defaults to the platform's default character encoding.</p> * * @since 1.3 */ private String encoding = null; // CheckStyle:VisibilityModifier OFF - bc /** * This Deflater object is used for output. * * <p>This attribute is only protected to provide a level of API * backwards compatibility. This class used to extend {@link * java.util.zip.DeflaterOutputStream DeflaterOutputStream} up to * Revision 1.13.</p> * * @since 1.14 */ protected Deflater def = new Deflater(level, true); /** * This buffer servers as a Deflater. * * <p>This attribute is only protected to provide a level of API * backwards compatibility. This class used to extend {@link * java.util.zip.DeflaterOutputStream DeflaterOutputStream} up to * Revision 1.13.</p> * * @since 1.14 */ protected byte[] buf = new byte[512]; // CheckStyle:VisibilityModifier ON /** * Optional random access output. * * @since 1.14 */ private RandomAccessFile raf = null; /** * Creates a new ZIP OutputStream filtering the underlying stream. * @param out the outputstream to zip * @since 1.1 */ public ZipOutputStream(OutputStream out) { super(out); } /** * Creates a new ZIP OutputStream writing to a File. Will use * random access if possible. * @param file the file to zip to * @since 1.14 * @throws IOException on error */ public ZipOutputStream(File file) throws IOException { super(null); try { raf = new RandomAccessFile(file, "rw"); raf.setLength(0); } catch (IOException e) { if (raf != null) { try { raf.close(); } catch (IOException inner) { // ignore } raf = null; } out = new FileOutputStream(file); } } /** * This method indicates whether this archive is writing to a seekable stream (i.e., to a random * access file). * * <p>For seekable streams, you don't need to calculate the CRC or * uncompressed size for {@link #STORED} entries before * invoking {@link #putNextEntry}. * @return true if seekable * @since 1.17 */ public boolean isSeekable() { return raf != null; } /** * The encoding to use for filenames and the file comment. * * <p>For a list of possible values see <a * href="http://java.sun.com/j2se/1.5.0/docs/guide/intl/encoding.doc.html">http://java.sun.com/j2se/1.5.0/docs/guide/intl/encoding.doc.html</a>. * Defaults to the platform's default character encoding.</p> * @param encoding the encoding value * @since 1.3 */ public void setEncoding(String encoding) { this.encoding = encoding; } /** * The encoding to use for filenames and the file comment. * * @return null if using the platform's default character