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8187443: Forest Consolidation: Move files to unified layout
Reviewed-by: darcy, ihse
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parent
270fe13182
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3789983e89
56923 changed files with 3 additions and 15727 deletions
149
src/java.base/share/classes/java/util/jar/JarOutputStream.java
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149
src/java.base/share/classes/java/util/jar/JarOutputStream.java
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/*
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* Copyright (c) 1997, 2012, Oracle and/or its affiliates. All rights reserved.
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* DO NOT ALTER OR REMOVE COPYRIGHT NOTICES OR THIS FILE HEADER.
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*
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* This code is free software; you can redistribute it and/or modify it
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* under the terms of the GNU General Public License version 2 only, as
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* published by the Free Software Foundation. Oracle designates this
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* particular file as subject to the "Classpath" exception as provided
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* by Oracle in the LICENSE file that accompanied this code.
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*
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* This code is distributed in the hope that it will be useful, but WITHOUT
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* ANY WARRANTY; without even the implied warranty of MERCHANTABILITY or
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* FITNESS FOR A PARTICULAR PURPOSE. See the GNU General Public License
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* version 2 for more details (a copy is included in the LICENSE file that
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* accompanied this code).
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*
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* You should have received a copy of the GNU General Public License version
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* 2 along with this work; if not, write to the Free Software Foundation,
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* Inc., 51 Franklin St, Fifth Floor, Boston, MA 02110-1301 USA.
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*
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* Please contact Oracle, 500 Oracle Parkway, Redwood Shores, CA 94065 USA
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* or visit www.oracle.com if you need additional information or have any
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* questions.
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*/
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package java.util.jar;
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import java.util.zip.*;
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import java.io.*;
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/**
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* The <code>JarOutputStream</code> class is used to write the contents
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* of a JAR file to any output stream. It extends the class
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* <code>java.util.zip.ZipOutputStream</code> with support
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* for writing an optional <code>Manifest</code> entry. The
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* <code>Manifest</code> can be used to specify meta-information about
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* the JAR file and its entries.
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*
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* @author David Connelly
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* @see Manifest
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* @see java.util.zip.ZipOutputStream
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* @since 1.2
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*/
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public
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class JarOutputStream extends ZipOutputStream {
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private static final int JAR_MAGIC = 0xCAFE;
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/**
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* Creates a new <code>JarOutputStream</code> with the specified
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* <code>Manifest</code>. The manifest is written as the first
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* entry to the output stream.
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*
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* @param out the actual output stream
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* @param man the optional <code>Manifest</code>
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* @exception IOException if an I/O error has occurred
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*/
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public JarOutputStream(OutputStream out, Manifest man) throws IOException {
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super(out);
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if (man == null) {
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throw new NullPointerException("man");
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}
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ZipEntry e = new ZipEntry(JarFile.MANIFEST_NAME);
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putNextEntry(e);
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man.write(new BufferedOutputStream(this));
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closeEntry();
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}
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/**
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* Creates a new <code>JarOutputStream</code> with no manifest.
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* @param out the actual output stream
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* @exception IOException if an I/O error has occurred
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*/
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public JarOutputStream(OutputStream out) throws IOException {
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super(out);
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}
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/**
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* Begins writing a new JAR file entry and positions the stream
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* to the start of the entry data. This method will also close
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* any previous entry. The default compression method will be
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* used if no compression method was specified for the entry.
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* The current time will be used if the entry has no set modification
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* time.
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*
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* @param ze the ZIP/JAR entry to be written
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* @exception ZipException if a ZIP error has occurred
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* @exception IOException if an I/O error has occurred
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*/
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public void putNextEntry(ZipEntry ze) throws IOException {
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if (firstEntry) {
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// Make sure that extra field data for first JAR
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// entry includes JAR magic number id.
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byte[] edata = ze.getExtra();
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if (edata == null || !hasMagic(edata)) {
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if (edata == null) {
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edata = new byte[4];
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} else {
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// Prepend magic to existing extra data
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byte[] tmp = new byte[edata.length + 4];
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System.arraycopy(edata, 0, tmp, 4, edata.length);
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edata = tmp;
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}
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set16(edata, 0, JAR_MAGIC); // extra field id
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set16(edata, 2, 0); // extra field size
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ze.setExtra(edata);
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}
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firstEntry = false;
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}
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super.putNextEntry(ze);
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}
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private boolean firstEntry = true;
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/*
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* Returns true if specified byte array contains the
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* jar magic extra field id.
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*/
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private static boolean hasMagic(byte[] edata) {
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try {
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int i = 0;
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while (i < edata.length) {
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if (get16(edata, i) == JAR_MAGIC) {
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return true;
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}
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i += get16(edata, i + 2) + 4;
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}
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} catch (ArrayIndexOutOfBoundsException e) {
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// Invalid extra field data
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}
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return false;
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}
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/*
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* Fetches unsigned 16-bit value from byte array at specified offset.
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* The bytes are assumed to be in Intel (little-endian) byte order.
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*/
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private static int get16(byte[] b, int off) {
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return Byte.toUnsignedInt(b[off]) | ( Byte.toUnsignedInt(b[off+1]) << 8);
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}
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/*
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* Sets 16-bit value at specified offset. The bytes are assumed to
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* be in Intel (little-endian) byte order.
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*/
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private static void set16(byte[] b, int off, int value) {
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b[off+0] = (byte)value;
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b[off+1] = (byte)(value >> 8);
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}
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}
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