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Diffstat (limited to 'libjava/java/util/zip/ZipOutputStream.java')
| -rw-r--r-- | libjava/java/util/zip/ZipOutputStream.java | 399 |
1 files changed, 0 insertions, 399 deletions
diff --git a/libjava/java/util/zip/ZipOutputStream.java b/libjava/java/util/zip/ZipOutputStream.java deleted file mode 100644 index 5699ff046f5..00000000000 --- a/libjava/java/util/zip/ZipOutputStream.java +++ /dev/null @@ -1,399 +0,0 @@ -/* ZipOutputStream.java -- - Copyright (C) 2001, 2004 Free Software Foundation, Inc. - -This file is part of GNU Classpath. - -GNU Classpath is free software; you can redistribute it and/or modify -it under the terms of the GNU General Public License as published by -the Free Software Foundation; either version 2, or (at your option) -any later version. - -GNU Classpath is distributed in the hope that it will be useful, but -WITHOUT ANY WARRANTY; without even the implied warranty of -MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU -General Public License for more details. - -You should have received a copy of the GNU General Public License -along with GNU Classpath; see the file COPYING. If not, write to the -Free Software Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston, MA -02110-1301 USA. - -Linking this library statically or dynamically with other modules is -making a combined work based on this library. Thus, the terms and -conditions of the GNU General Public License cover the whole -combination. - -As a special exception, the copyright holders of this library give you -permission to link this library with independent modules to produce an -executable, regardless of the license terms of these independent -modules, and to copy and distribute the resulting executable under -terms of your choice, provided that you also meet, for each linked -independent module, the terms and conditions of the license of that -module. An independent module is a module which is not derived from -or based on this library. If you modify this library, you may extend -this exception to your version of the library, but you are not -obligated to do so. If you do not wish to do so, delete this -exception statement from your version. */ - - -package java.util.zip; - -import java.io.IOException; -import java.io.OutputStream; -import java.util.Enumeration; -import java.util.Vector; - -/** - * This is a FilterOutputStream that writes the files into a zip - * archive one after another. It has a special method to start a new - * zip entry. The zip entries contains information about the file name - * size, compressed size, CRC, etc. - * - * It includes support for STORED and DEFLATED entries. - * - * This class is not thread safe. - * - * @author Jochen Hoenicke - */ -public class ZipOutputStream extends DeflaterOutputStream implements ZipConstants -{ - private Vector entries = new Vector(); - private CRC32 crc = new CRC32(); - private ZipEntry curEntry = null; - - private int curMethod; - private int size; - private int offset = 0; - - private byte[] zipComment = new byte[0]; - private int defaultMethod = DEFLATED; - - /** - * Our Zip version is hard coded to 1.0 resp. 2.0 - */ - private static final int ZIP_STORED_VERSION = 10; - private static final int ZIP_DEFLATED_VERSION = 20; - - /** - * Compression method. This method doesn't compress at all. - */ - public static final int STORED = 0; - - /** - * Compression method. This method uses the Deflater. - */ - public static final int DEFLATED = 8; - - /** - * Creates a new Zip output stream, writing a zip archive. - * @param out the output stream to which the zip archive is written. - */ - public ZipOutputStream(OutputStream out) - { - super(out, new Deflater(Deflater.DEFAULT_COMPRESSION, true)); - } - - /** - * Set the zip file comment. - * @param comment the comment. - * @exception IllegalArgumentException if encoding of comment is - * longer than 0xffff bytes. - */ - public void setComment(String comment) - { - byte[] commentBytes; - commentBytes = comment.getBytes(); - if (commentBytes.length > 0xffff) - throw new IllegalArgumentException("Comment too long."); - zipComment = commentBytes; - } - - /** - * Sets default compression method. If the Zip entry specifies - * another method its method takes precedence. - * @param method the method. - * @exception IllegalArgumentException if method is not supported. - * @see #STORED - * @see #DEFLATED - */ - public void setMethod(int method) - { - if (method != STORED && method != DEFLATED) - throw new IllegalArgumentException("Method not supported."); - defaultMethod = method; - } - - /** - * Sets default compression level. The new level will be activated - * immediately. - * @exception IllegalArgumentException if level is not supported. - * @see Deflater - */ - public void setLevel(int level) - { - def.setLevel(level); - } - - /** - * Write an unsigned short in little endian byte order. - */ - private void writeLeShort(int value) throws IOException - { - out.write(value & 0xff); - out.write((value >> 8) & 0xff); - } - - /** - * Write an int in little endian byte order. - */ - private void writeLeInt(int value) throws IOException - { - writeLeShort(value); - writeLeShort(value >> 16); - } - - /** - * Starts a new Zip entry. It automatically closes the previous - * entry if present. If the compression method is stored, the entry - * must have a valid size and crc, otherwise all elements (except - * name) are optional, but must be correct if present. If the time - * is not set in the entry, the current time is used. - * @param entry the entry. - * @exception IOException if an I/O error occured. - * @exception ZipException if stream was finished. - */ - public void putNextEntry(ZipEntry entry) throws IOException - { - if (entries == null) - throw new ZipException("ZipOutputStream was finished"); - - int method = entry.getMethod(); - int flags = 0; - if (method == -1) - method = defaultMethod; - - if (method == STORED) - { - if (entry.getCompressedSize() >= 0) - { - if (entry.getSize() < 0) - entry.setSize(entry.getCompressedSize()); - else if (entry.getSize() != entry.getCompressedSize()) - throw new ZipException - ("Method STORED, but compressed size != size"); - } - else - entry.setCompressedSize(entry.getSize()); - - if (entry.getSize() < 0) - throw new ZipException("Method STORED, but size not set"); - if (entry.getCrc() < 0) - throw new ZipException("Method STORED, but crc not set"); - } - else if (method == DEFLATED) - { - if (entry.getCompressedSize() < 0 - || entry.getSize() < 0 || entry.getCrc() < 0) - flags |= 8; - } - - if (curEntry != null) - closeEntry(); - - if (entry.getTime() < 0) - entry.setTime(System.currentTimeMillis()); - - entry.flags = flags; - entry.offset = offset; - entry.setMethod(method); - curMethod = method; - /* Write the local file header */ - writeLeInt(LOCSIG); - writeLeShort(method == STORED - ? ZIP_STORED_VERSION : ZIP_DEFLATED_VERSION); - writeLeShort(flags); - writeLeShort(method); - writeLeInt(entry.getDOSTime()); - if ((flags & 8) == 0) - { - writeLeInt((int)entry.getCrc()); - writeLeInt((int)entry.getCompressedSize()); - writeLeInt((int)entry.getSize()); - } - else - { - writeLeInt(0); - writeLeInt(0); - writeLeInt(0); - } - byte[] name = entry.getName().getBytes(); - if (name.length > 0xffff) - throw new ZipException("Name too long."); - byte[] extra = entry.getExtra(); - if (extra == null) - extra = new byte[0]; - writeLeShort(name.length); - writeLeShort(extra.length); - out.write(name); - out.write(extra); - - offset += LOCHDR + name.length + extra.length; - - /* Activate the entry. */ - - curEntry = entry; - crc.reset(); - if (method == DEFLATED) - def.reset(); - size = 0; - } - - /** - * Closes the current entry. - * @exception IOException if an I/O error occured. - * @exception ZipException if no entry is active. - */ - public void closeEntry() throws IOException - { - if (curEntry == null) - throw new ZipException("No open entry"); - - /* First finish the deflater, if appropriate */ - if (curMethod == DEFLATED) - super.finish(); - - int csize = curMethod == DEFLATED ? def.getTotalOut() : size; - - if (curEntry.getSize() < 0) - curEntry.setSize(size); - else if (curEntry.getSize() != size) - throw new ZipException("size was "+size - +", but I expected "+curEntry.getSize()); - - if (curEntry.getCompressedSize() < 0) - curEntry.setCompressedSize(csize); - else if (curEntry.getCompressedSize() != csize) - throw new ZipException("compressed size was "+csize - +", but I expected "+curEntry.getSize()); - - if (curEntry.getCrc() < 0) - curEntry.setCrc(crc.getValue()); - else if (curEntry.getCrc() != crc.getValue()) - throw new ZipException("crc was " + Long.toHexString(crc.getValue()) - + ", but I expected " - + Long.toHexString(curEntry.getCrc())); - - offset += csize; - - /* Now write the data descriptor entry if needed. */ - if (curMethod == DEFLATED && (curEntry.flags & 8) != 0) - { - writeLeInt(EXTSIG); - writeLeInt((int)curEntry.getCrc()); - writeLeInt((int)curEntry.getCompressedSize()); - writeLeInt((int)curEntry.getSize()); - offset += EXTHDR; - } - - entries.addElement(curEntry); - curEntry = null; - } - - /** - * Writes the given buffer to the current entry. - * @exception IOException if an I/O error occured. - * @exception ZipException if no entry is active. - */ - public void write(byte[] b, int off, int len) throws IOException - { - if (curEntry == null) - throw new ZipException("No open entry."); - - switch (curMethod) - { - case DEFLATED: - super.write(b, off, len); - break; - - case STORED: - out.write(b, off, len); - break; - } - - crc.update(b, off, len); - size += len; - } - - /** - * Finishes the stream. This will write the central directory at the - * end of the zip file and flush the stream. - * @exception IOException if an I/O error occured. - */ - public void finish() throws IOException - { - if (entries == null) - return; - if (curEntry != null) - closeEntry(); - - int numEntries = 0; - int sizeEntries = 0; - - Enumeration e = entries.elements(); - while (e.hasMoreElements()) - { - ZipEntry entry = (ZipEntry) e.nextElement(); - - int method = entry.getMethod(); - writeLeInt(CENSIG); - writeLeShort(method == STORED - ? ZIP_STORED_VERSION : ZIP_DEFLATED_VERSION); - writeLeShort(method == STORED - ? ZIP_STORED_VERSION : ZIP_DEFLATED_VERSION); - writeLeShort(entry.flags); - writeLeShort(method); - writeLeInt(entry.getDOSTime()); - writeLeInt((int)entry.getCrc()); - writeLeInt((int)entry.getCompressedSize()); - writeLeInt((int)entry.getSize()); - - byte[] name = entry.getName().getBytes(); - if (name.length > 0xffff) - throw new ZipException("Name too long."); - byte[] extra = entry.getExtra(); - if (extra == null) - extra = new byte[0]; - String strComment = entry.getComment(); - byte[] comment = strComment != null - ? strComment.getBytes() : new byte[0]; - if (comment.length > 0xffff) - throw new ZipException("Comment too long."); - - writeLeShort(name.length); - writeLeShort(extra.length); - writeLeShort(comment.length); - writeLeShort(0); /* disk number */ - writeLeShort(0); /* internal file attr */ - writeLeInt(0); /* external file attr */ - writeLeInt(entry.offset); - - out.write(name); - out.write(extra); - out.write(comment); - numEntries++; - sizeEntries += CENHDR + name.length + extra.length + comment.length; - } - - writeLeInt(ENDSIG); - writeLeShort(0); /* disk number */ - writeLeShort(0); /* disk with start of central dir */ - writeLeShort(numEntries); - writeLeShort(numEntries); - writeLeInt(sizeEntries); - writeLeInt(offset); - writeLeShort(zipComment.length); - out.write(zipComment); - out.flush(); - entries = null; - } -} |