J. Duke | 319a3b9 | 2007-12-01 00:00:00 +0000 | [diff] [blame^] | 1 | /* |
| 2 | * Copyright 2003-2005 Sun Microsystems, Inc. All Rights Reserved. |
| 3 | * DO NOT ALTER OR REMOVE COPYRIGHT NOTICES OR THIS FILE HEADER. |
| 4 | * |
| 5 | * This code is free software; you can redistribute it and/or modify it |
| 6 | * under the terms of the GNU General Public License version 2 only, as |
| 7 | * published by the Free Software Foundation. Sun designates this |
| 8 | * particular file as subject to the "Classpath" exception as provided |
| 9 | * by Sun in the LICENSE file that accompanied this code. |
| 10 | * |
| 11 | * This code is distributed in the hope that it will be useful, but WITHOUT |
| 12 | * ANY WARRANTY; without even the implied warranty of MERCHANTABILITY or |
| 13 | * FITNESS FOR A PARTICULAR PURPOSE. See the GNU General Public License |
| 14 | * version 2 for more details (a copy is included in the LICENSE file that |
| 15 | * accompanied this code). |
| 16 | * |
| 17 | * You should have received a copy of the GNU General Public License version |
| 18 | * 2 along with this work; if not, write to the Free Software Foundation, |
| 19 | * Inc., 51 Franklin St, Fifth Floor, Boston, MA 02110-1301 USA. |
| 20 | * |
| 21 | * Please contact Sun Microsystems, Inc., 4150 Network Circle, Santa Clara, |
| 22 | * CA 95054 USA or visit www.sun.com if you need additional information or |
| 23 | * have any questions. |
| 24 | */ |
| 25 | |
| 26 | package com.sun.java.util.jar.pack; |
| 27 | |
| 28 | import java.util.*; |
| 29 | import java.util.jar.*; |
| 30 | import java.util.zip.*; |
| 31 | import java.util.logging.*; |
| 32 | import java.io.*; |
| 33 | |
| 34 | class Utils { |
| 35 | static final String COM_PREFIX = "com.sun.java.util.jar.pack."; |
| 36 | static final String METAINF = "META-INF"; |
| 37 | |
| 38 | /* |
| 39 | * Outputs various diagnostic support information. |
| 40 | * If >0, print summary comments (e.g., constant pool info). |
| 41 | * If >1, print unit comments (e.g., processing of classes). |
| 42 | * If >2, print many comments (e.g., processing of members). |
| 43 | * If >3, print tons of comments (e.g., processing of references). |
| 44 | * (installer only) |
| 45 | */ |
| 46 | static final String DEBUG_VERBOSE = Utils.COM_PREFIX+"verbose"; |
| 47 | |
| 48 | /* |
| 49 | * Disables use of native code, prefers the Java-coded implementation. |
| 50 | * (installer only) |
| 51 | */ |
| 52 | static final String DEBUG_DISABLE_NATIVE = COM_PREFIX+"disable.native"; |
| 53 | |
| 54 | /* |
| 55 | * Use the default working TimeZone instead of UTC. |
| 56 | * Note: This has installer unpacker implications. |
| 57 | * see: zip.cpp which uses gmtime vs. localtime. |
| 58 | */ |
| 59 | static final String PACK_DEFAULT_TIMEZONE = COM_PREFIX+"default.timezone"; |
| 60 | |
| 61 | /* |
| 62 | * Property indicating that the unpacker should |
| 63 | * ignore the transmitted PACK_MODIFICATION_TIME, |
| 64 | * replacing it by the given value. The value can |
| 65 | * be a numeric string, representing the number of |
| 66 | * mSecs since the epoch (UTC), or the special string |
| 67 | * {@link #NOW}, meaning the current time (UTC). |
| 68 | * The default value is the special string {@link #KEEP}, |
| 69 | * which asks the unpacker to preserve all transmitted |
| 70 | * modification time information. |
| 71 | * (installer only) |
| 72 | */ |
| 73 | static final String UNPACK_MODIFICATION_TIME = COM_PREFIX+"unpack.modification.time"; |
| 74 | |
| 75 | /* |
| 76 | * Property indicating that the unpacker strip the |
| 77 | * Debug Attributes, if they are present, in the pack stream. |
| 78 | * The default value is false. |
| 79 | * (installer only) |
| 80 | */ |
| 81 | static final String UNPACK_STRIP_DEBUG = COM_PREFIX+"unpack.strip.debug"; |
| 82 | |
| 83 | /* |
| 84 | * Remove the input file after unpacking. |
| 85 | * (installer only) |
| 86 | */ |
| 87 | static final String UNPACK_REMOVE_PACKFILE = COM_PREFIX+"unpack.remove.packfile"; |
| 88 | |
| 89 | /* |
| 90 | * A possible value for MODIFICATION_TIME |
| 91 | */ |
| 92 | static final String NOW = "now"; |
| 93 | // Other debug options: |
| 94 | // com...debug.bands=false add band IDs to pack file, to verify sync |
| 95 | // com...dump.bands=false dump band contents to local disk |
| 96 | // com...no.vary.codings=false turn off coding variation heuristics |
| 97 | // com...no.big.strings=false turn off "big string" feature |
| 98 | |
| 99 | /* |
| 100 | * If this property is set to {@link #TRUE}, the packer will preserve |
| 101 | * the ordering of class files of the original jar in the output archive. |
| 102 | * The ordering is preserved only for class-files; resource files |
| 103 | * may be reordered. |
| 104 | * <p> |
| 105 | * If the packer is allowed to reorder class files, it can marginally |
| 106 | * decrease the transmitted size of the archive. |
| 107 | */ |
| 108 | static final String PACK_KEEP_CLASS_ORDER = COM_PREFIX+"keep.class.order"; |
| 109 | /* |
| 110 | * This string PACK200 is given as a zip comment on all JAR files |
| 111 | * produced by this utility. |
| 112 | */ |
| 113 | static final String PACK_ZIP_ARCHIVE_MARKER_COMMENT = "PACK200"; |
| 114 | |
| 115 | // Keep a TLS point to the current Packer or Unpacker. |
| 116 | // This makes it simpler to supply environmental options |
| 117 | // to the engine code, especially the native code. |
| 118 | static final ThreadLocal currentInstance = new ThreadLocal(); |
| 119 | |
| 120 | static PropMap currentPropMap() { |
| 121 | Object obj = currentInstance.get(); |
| 122 | if (obj instanceof PackerImpl) |
| 123 | return ((PackerImpl)obj)._props; |
| 124 | if (obj instanceof UnpackerImpl) |
| 125 | return ((UnpackerImpl)obj)._props; |
| 126 | return null; |
| 127 | } |
| 128 | |
| 129 | static final boolean nolog |
| 130 | = Boolean.getBoolean(Utils.COM_PREFIX+"nolog"); |
| 131 | |
| 132 | |
| 133 | static final Logger log |
| 134 | = new Logger("java.util.jar.Pack200", null) { |
| 135 | public void log(LogRecord record) { |
| 136 | int verbose = currentPropMap().getInteger(DEBUG_VERBOSE); |
| 137 | if (verbose > 0) { |
| 138 | if (nolog && |
| 139 | record.getLevel().intValue() < Level.WARNING.intValue()) { |
| 140 | System.out.println(record.getMessage()); |
| 141 | } else { |
| 142 | super.log(record); |
| 143 | } |
| 144 | } |
| 145 | } |
| 146 | |
| 147 | public void fine(String msg) { |
| 148 | int verbose = currentPropMap().getInteger(DEBUG_VERBOSE); |
| 149 | if (verbose > 0) { |
| 150 | System.out.println(msg); |
| 151 | } |
| 152 | } |
| 153 | }; |
| 154 | static { |
| 155 | LogManager.getLogManager().addLogger(log); |
| 156 | } |
| 157 | |
| 158 | // Returns the Max Version String of this implementation |
| 159 | static String getVersionString() { |
| 160 | return "Pack200, Vendor: Sun Microsystems, Version: " + |
| 161 | Constants.JAVA6_PACKAGE_MAJOR_VERSION + "." + |
| 162 | Constants.JAVA6_PACKAGE_MINOR_VERSION; |
| 163 | } |
| 164 | |
| 165 | static void markJarFile(JarOutputStream out) throws IOException { |
| 166 | out.setComment(PACK_ZIP_ARCHIVE_MARKER_COMMENT); |
| 167 | } |
| 168 | |
| 169 | // -0 mode helper |
| 170 | static void copyJarFile(JarInputStream in, JarOutputStream out) throws IOException { |
| 171 | if (in.getManifest() != null) { |
| 172 | ZipEntry me = new ZipEntry(JarFile.MANIFEST_NAME); |
| 173 | out.putNextEntry(me); |
| 174 | in.getManifest().write(out); |
| 175 | out.closeEntry(); |
| 176 | } |
| 177 | byte[] buffer = new byte[1 << 14]; |
| 178 | for (JarEntry je; (je = in.getNextJarEntry()) != null; ) { |
| 179 | out.putNextEntry(je); |
| 180 | for (int nr; 0 < (nr = in.read(buffer)); ) { |
| 181 | out.write(buffer, 0, nr); |
| 182 | } |
| 183 | } |
| 184 | in.close(); |
| 185 | markJarFile(out); // add PACK200 comment |
| 186 | } |
| 187 | static void copyJarFile(JarFile in, JarOutputStream out) throws IOException { |
| 188 | byte[] buffer = new byte[1 << 14]; |
| 189 | for (Enumeration e = in.entries(); e.hasMoreElements(); ) { |
| 190 | JarEntry je = (JarEntry) e.nextElement(); |
| 191 | out.putNextEntry(je); |
| 192 | InputStream ein = in.getInputStream(je); |
| 193 | for (int nr; 0 < (nr = ein.read(buffer)); ) { |
| 194 | out.write(buffer, 0, nr); |
| 195 | } |
| 196 | } |
| 197 | in.close(); |
| 198 | markJarFile(out); // add PACK200 comment |
| 199 | } |
| 200 | static void copyJarFile(JarInputStream in, OutputStream out) throws IOException { |
| 201 | // 4947205 : Peformance is slow when using pack-effort=0 |
| 202 | out = new BufferedOutputStream(out); |
| 203 | out = new NonCloser(out); // protect from JarOutputStream.close() |
| 204 | JarOutputStream jout = new JarOutputStream(out); |
| 205 | copyJarFile(in, jout); |
| 206 | jout.close(); |
| 207 | } |
| 208 | static void copyJarFile(JarFile in, OutputStream out) throws IOException { |
| 209 | |
| 210 | // 4947205 : Peformance is slow when using pack-effort=0 |
| 211 | out = new BufferedOutputStream(out); |
| 212 | out = new NonCloser(out); // protect from JarOutputStream.close() |
| 213 | JarOutputStream jout = new JarOutputStream(out); |
| 214 | copyJarFile(in, jout); |
| 215 | jout.close(); |
| 216 | } |
| 217 | // Wrapper to prevent closing of client-supplied stream. |
| 218 | static private |
| 219 | class NonCloser extends FilterOutputStream { |
| 220 | NonCloser(OutputStream out) { super(out); } |
| 221 | public void close() throws IOException { flush(); } |
| 222 | } |
| 223 | static String getJarEntryName(String name) { |
| 224 | if (name == null) return null; |
| 225 | return name.replace(File.separatorChar, '/'); |
| 226 | } |
| 227 | |
| 228 | static String zeString(ZipEntry ze) { |
| 229 | int store = (ze.getCompressedSize() > 0) ? |
| 230 | (int)( (1.0 - ((double)ze.getCompressedSize()/(double)ze.getSize()))*100 ) |
| 231 | : 0 ; |
| 232 | // Follow unzip -lv output |
| 233 | return (long)ze.getSize() + "\t" + ze.getMethod() |
| 234 | + "\t" + ze.getCompressedSize() + "\t" |
| 235 | + store + "%\t" |
| 236 | + new Date(ze.getTime()) + "\t" |
| 237 | + Long.toHexString(ze.getCrc()) + "\t" |
| 238 | + ze.getName() ; |
| 239 | } |
| 240 | |
| 241 | |
| 242 | |
| 243 | static byte[] readMagic(BufferedInputStream in) throws IOException { |
| 244 | in.mark(4); |
| 245 | byte[] magic = new byte[4]; |
| 246 | for (int i = 0; i < magic.length; i++) { |
| 247 | // read 1 byte at a time, so we always get 4 |
| 248 | if (1 != in.read(magic, i, 1)) |
| 249 | break; |
| 250 | } |
| 251 | in.reset(); |
| 252 | return magic; |
| 253 | } |
| 254 | |
| 255 | // magic number recognizers |
| 256 | static boolean isJarMagic(byte[] magic) { |
| 257 | return (magic[0] == (byte)'P' && |
| 258 | magic[1] == (byte)'K' && |
| 259 | magic[2] >= 1 && |
| 260 | magic[2] < 8 && |
| 261 | magic[3] == magic[2] + 1); |
| 262 | } |
| 263 | static boolean isPackMagic(byte[] magic) { |
| 264 | return (magic[0] == (byte)0xCA && |
| 265 | magic[1] == (byte)0xFE && |
| 266 | magic[2] == (byte)0xD0 && |
| 267 | magic[3] == (byte)0x0D); |
| 268 | } |
| 269 | static boolean isGZIPMagic(byte[] magic) { |
| 270 | return (magic[0] == (byte)0x1F && |
| 271 | magic[1] == (byte)0x8B && |
| 272 | magic[2] == (byte)0x08); |
| 273 | // fourth byte is variable "flg" field |
| 274 | } |
| 275 | |
| 276 | private Utils() { } // do not instantiate |
| 277 | } |