1.1 --- a/emul/mini/src/main/java/org/apidesign/bck2brwsr/emul/zip/FastJar.java Fri Mar 22 16:59:47 2013 +0100
1.2 +++ /dev/null Thu Jan 01 00:00:00 1970 +0000
1.3 @@ -1,175 +0,0 @@
1.4 -/*
1.5 - * DO NOT ALTER OR REMOVE COPYRIGHT NOTICES OR THIS HEADER.
1.6 - *
1.7 - * Copyright 1997-2010 Oracle and/or its affiliates. All rights reserved.
1.8 - *
1.9 - * Oracle and Java are registered trademarks of Oracle and/or its affiliates.
1.10 - * Other names may be trademarks of their respective owners.
1.11 - *
1.12 - * The contents of this file are subject to the terms of either the GNU
1.13 - * General Public License Version 2 only ("GPL") or the Common
1.14 - * Development and Distribution License("CDDL") (collectively, the
1.15 - * "License"). You may not use this file except in compliance with the
1.16 - * License. You can obtain a copy of the License at
1.17 - * http://www.netbeans.org/cddl-gplv2.html
1.18 - * or nbbuild/licenses/CDDL-GPL-2-CP. See the License for the
1.19 - * specific language governing permissions and limitations under the
1.20 - * License. When distributing the software, include this License Header
1.21 - * Notice in each file and include the License file at
1.22 - * nbbuild/licenses/CDDL-GPL-2-CP. Oracle designates this
1.23 - * particular file as subject to the "Classpath" exception as provided
1.24 - * by Oracle in the GPL Version 2 section of the License file that
1.25 - * accompanied this code. If applicable, add the following below the
1.26 - * License Header, with the fields enclosed by brackets [] replaced by
1.27 - * your own identifying information:
1.28 - * "Portions Copyrighted [year] [name of copyright owner]"
1.29 - *
1.30 - * Contributor(s):
1.31 - *
1.32 - * Portions Copyrighted 2007 Sun Microsystems, Inc.
1.33 - */
1.34 -package org.apidesign.bck2brwsr.emul.zip;
1.35 -
1.36 -import java.io.ByteArrayInputStream;
1.37 -import java.io.IOException;
1.38 -import java.io.InputStream;
1.39 -import java.util.zip.ZipEntry;
1.40 -import java.util.zip.ZipInputStream;
1.41 -
1.42 -/**
1.43 - *
1.44 - * @author Tomas Zezula
1.45 - */
1.46 -public final class FastJar {
1.47 - private final byte[] arr;
1.48 -
1.49 - public FastJar(byte[] arr) {
1.50 - this.arr = arr;
1.51 - }
1.52 -
1.53 -
1.54 - private static final int GIVE_UP = 1<<16;
1.55 -
1.56 - public static final class Entry {
1.57 -
1.58 - public final String name;
1.59 - final long offset;
1.60 - private final long dosTime;
1.61 -
1.62 - Entry (String name, long offset, long time) {
1.63 - assert name != null;
1.64 - this.name = name;
1.65 - this.offset = offset;
1.66 - this.dosTime = time;
1.67 - }
1.68 -/*
1.69 - public long getTime () {
1.70 - Date d = new Date((int)(((dosTime >> 25) & 0x7f) + 80),
1.71 - (int)(((dosTime >> 21) & 0x0f) - 1),
1.72 - (int)((dosTime >> 16) & 0x1f),
1.73 - (int)((dosTime >> 11) & 0x1f),
1.74 - (int)((dosTime >> 5) & 0x3f),
1.75 - (int)((dosTime << 1) & 0x3e));
1.76 - return d.getTime();
1.77 - }
1.78 - */
1.79 - }
1.80 -
1.81 - public InputStream getInputStream (final Entry e) throws IOException {
1.82 - return getInputStream(arr, e.offset);
1.83 - }
1.84 -
1.85 - private static InputStream getInputStream (byte[] arr, final long offset) throws IOException {
1.86 - ByteArrayInputStream is = new ByteArrayInputStream(arr);
1.87 - is.skip(offset);
1.88 - ZipInputStream in = new ZipInputStream (is);
1.89 - ZipEntry e = in.getNextEntry();
1.90 - if (e != null && e.getCrc() == 0L && e.getMethod() == ZipEntry.STORED) {
1.91 - int cp = arr.length - is.available();
1.92 - return new ByteArrayInputStream(arr, cp, (int)e.getSize());
1.93 - }
1.94 - return in;
1.95 - }
1.96 -
1.97 - public Entry[] list() throws IOException {
1.98 - final int size = arr.length;
1.99 -
1.100 - int at = size - ZipInputStream.ENDHDR;
1.101 -
1.102 - byte[] data = new byte[ZipInputStream.ENDHDR];
1.103 - int giveup = 0;
1.104 -
1.105 - do {
1.106 - org.apidesign.bck2brwsr.emul.lang.System.arraycopy(arr, at, data, 0, data.length);
1.107 - at--;
1.108 - giveup++;
1.109 - if (giveup > GIVE_UP) {
1.110 - throw new IOException ();
1.111 - }
1.112 - } while (getsig(data) != ZipInputStream.ENDSIG);
1.113 -
1.114 -
1.115 - final long censize = endsiz(data);
1.116 - final long cenoff = endoff(data);
1.117 - at = (int) cenoff;
1.118 -
1.119 - Entry[] result = new Entry[0];
1.120 - int cenread = 0;
1.121 - data = new byte[ZipInputStream.CENHDR];
1.122 - while (cenread < censize) {
1.123 - org.apidesign.bck2brwsr.emul.lang.System.arraycopy(arr, at, data, 0, data.length);
1.124 - at += data.length;
1.125 - if (getsig(data) != ZipInputStream.CENSIG) {
1.126 - throw new IOException("No central table"); //NOI18N
1.127 - }
1.128 - int cennam = cennam(data);
1.129 - int cenext = cenext(data);
1.130 - int cencom = cencom(data);
1.131 - long lhoff = cenoff(data);
1.132 - long centim = centim(data);
1.133 - String name = new String(arr, at, cennam, "UTF-8");
1.134 - at += cennam;
1.135 - int seekby = cenext+cencom;
1.136 - int cendatalen = ZipInputStream.CENHDR + cennam + seekby;
1.137 - cenread+=cendatalen;
1.138 - result = addEntry(result, new Entry(name,lhoff, centim));
1.139 - at += seekby;
1.140 - }
1.141 - return result;
1.142 - }
1.143 -
1.144 - private Entry[] addEntry(Entry[] result, Entry entry) {
1.145 - Entry[] e = new Entry[result.length + 1];
1.146 - e[result.length] = entry;
1.147 - org.apidesign.bck2brwsr.emul.lang.System.arraycopy(result, 0, e, 0, result.length);
1.148 - return e;
1.149 - }
1.150 -
1.151 - private static final long getsig(final byte[] b) throws IOException {return get32(b,0);}
1.152 - private static final long endsiz(final byte[] b) throws IOException {return get32(b,ZipInputStream.ENDSIZ);}
1.153 - private static final long endoff(final byte[] b) throws IOException {return get32(b,ZipInputStream.ENDOFF);}
1.154 - private static final long cenlen(final byte[] b) throws IOException {return get32(b,ZipInputStream.CENLEN);}
1.155 - private static final long censiz(final byte[] b) throws IOException {return get32(b,ZipInputStream.CENSIZ);}
1.156 - private static final long centim(final byte[] b) throws IOException {return get32(b,ZipInputStream.CENTIM);}
1.157 - private static final int cennam(final byte[] b) throws IOException {return get16(b,ZipInputStream.CENNAM);}
1.158 - private static final int cenext(final byte[] b) throws IOException {return get16(b,ZipInputStream.CENEXT);}
1.159 - private static final int cencom(final byte[] b) throws IOException {return get16(b,ZipInputStream.CENCOM);}
1.160 - private static final long cenoff (final byte[] b) throws IOException {return get32(b,ZipInputStream.CENOFF);}
1.161 - private static final int lochow(final byte[] b) throws IOException {return get16(b,ZipInputStream.LOCHOW);}
1.162 - private static final int locname(final byte[] b) throws IOException {return get16(b,ZipInputStream.LOCNAM);}
1.163 - private static final int locext(final byte[] b) throws IOException {return get16(b,ZipInputStream.LOCEXT);}
1.164 - private static final long locsiz(final byte[] b) throws IOException {return get32(b,ZipInputStream.LOCSIZ);}
1.165 -
1.166 - private static final int get16(final byte[] b, int off) throws IOException {
1.167 - final int b1 = b[off];
1.168 - final int b2 = b[off+1];
1.169 - return (b1 & 0xff) | ((b2 & 0xff) << 8);
1.170 - }
1.171 -
1.172 - private static final long get32(final byte[] b, int off) throws IOException {
1.173 - final int s1 = get16(b, off);
1.174 - final int s2 = get16(b, off+2);
1.175 - return s1 | ((long)s2 << 16);
1.176 - }
1.177 -
1.178 -}