001/* 002 * Licensed to the Apache Software Foundation (ASF) under one or more 003 * contributor license agreements. See the NOTICE file distributed with 004 * this work for additional information regarding copyright ownership. 005 * The ASF licenses this file to You under the Apache License, Version 2.0 006 * (the "License"); you may not use this file except in compliance with 007 * the License. You may obtain a copy of the License at 008 * 009 * http://www.apache.org/licenses/LICENSE-2.0 010 * 011 * Unless required by applicable law or agreed to in writing, software 012 * distributed under the License is distributed on an "AS IS" BASIS, 013 * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied. 014 * See the License for the specific language governing permissions and 015 * limitations under the License. 016 */ 017package org.apache.commons.compress.harmony.unpack200; 018 019import java.io.BufferedInputStream; 020import java.io.BufferedOutputStream; 021import java.io.File; 022import java.io.FileInputStream; 023import java.io.FileNotFoundException; 024import java.io.FileOutputStream; 025import java.io.IOException; 026import java.io.InputStream; 027import java.io.OutputStream; 028import java.util.jar.JarEntry; 029import java.util.jar.JarInputStream; 030import java.util.jar.JarOutputStream; 031import java.util.zip.GZIPInputStream; 032 033import org.apache.commons.compress.harmony.pack200.Pack200Exception; 034 035/** 036 * Archive is the main entry point to unpack200. An archive is constructed with either two file names, a pack file and 037 * an output file name or an input stream and an output streams. Then {@code unpack()} is called, to unpack the 038 * pack200 archive. 039 */ 040public class Archive { 041 042 private InputStream inputStream; 043 044 private final JarOutputStream outputStream; 045 046 private boolean removePackFile; 047 048 private int logLevel = Segment.LOG_LEVEL_STANDARD; 049 050 private FileOutputStream logFile; 051 052 private boolean overrideDeflateHint; 053 054 private boolean deflateHint; 055 056 private String inputFileName; 057 058 private String outputFileName; 059 060 /** 061 * Creates an Archive with streams for the input and output files. Note: If you use this method then calling 062 * {@link #setRemovePackFile(boolean)} will have no effect. 063 * 064 * @param inputStream TODO 065 * @param outputStream TODO 066 */ 067 public Archive(final InputStream inputStream, final JarOutputStream outputStream) { 068 this.inputStream = inputStream; 069 this.outputStream = outputStream; 070 } 071 072 /** 073 * Creates an Archive with the given input and output file names. 074 * 075 * @param inputFile TODO 076 * @param outputFile TODO 077 * @throws FileNotFoundException if the input file does not exist 078 * @throws FileNotFoundException TODO 079 * @throws IOException TODO 080 */ 081 public Archive(final String inputFile, final String outputFile) throws FileNotFoundException, IOException { 082 this.inputFileName = inputFile; 083 this.outputFileName = outputFile; 084 inputStream = new FileInputStream(inputFile); 085 outputStream = new JarOutputStream(new BufferedOutputStream(new FileOutputStream(outputFile))); 086 } 087 088 private boolean available(final InputStream inputStream) throws IOException { 089 inputStream.mark(1); 090 final int check = inputStream.read(); 091 inputStream.reset(); 092 return check != -1; 093 } 094 095 public void setDeflateHint(final boolean deflateHint) { 096 overrideDeflateHint = true; 097 this.deflateHint = deflateHint; 098 } 099 100 public void setLogFile(final String logFileName) throws FileNotFoundException { 101 this.logFile = new FileOutputStream(logFileName); 102 } 103 104 public void setLogFile(final String logFileName, final boolean append) throws FileNotFoundException { 105 logFile = new FileOutputStream(logFileName, append); 106 } 107 108 public void setQuiet(final boolean quiet) { 109 if (quiet || (logLevel == Segment.LOG_LEVEL_QUIET)) { 110 logLevel = Segment.LOG_LEVEL_QUIET; 111 } 112 } 113 114 /** 115 * If removePackFile is set to true, the input file is deleted after unpacking. 116 * 117 * @param removePackFile If true, the input file is deleted after unpacking. 118 */ 119 public void setRemovePackFile(final boolean removePackFile) { 120 this.removePackFile = removePackFile; 121 } 122 123 public void setVerbose(final boolean verbose) { 124 if (verbose) { 125 logLevel = Segment.LOG_LEVEL_VERBOSE; 126 } else if (logLevel == Segment.LOG_LEVEL_VERBOSE) { 127 logLevel = Segment.LOG_LEVEL_STANDARD; 128 } 129 } 130 131 /** 132 * Unpacks the Archive from the input file to the output file 133 * 134 * @throws Pack200Exception TODO 135 * @throws IOException TODO 136 */ 137 public void unpack() throws Pack200Exception, IOException { 138 outputStream.setComment("PACK200"); 139 try { 140 if (!inputStream.markSupported()) { 141 inputStream = new BufferedInputStream(inputStream); 142 if (!inputStream.markSupported()) { 143 throw new IllegalStateException(); 144 } 145 } 146 inputStream.mark(2); 147 if (((inputStream.read() & 0xFF) | (inputStream.read() & 0xFF) << 8) == GZIPInputStream.GZIP_MAGIC) { 148 inputStream.reset(); 149 inputStream = new BufferedInputStream(new GZIPInputStream(inputStream)); 150 } else { 151 inputStream.reset(); 152 } 153 inputStream.mark(4); 154 final int[] magic = {0xCA, 0xFE, 0xD0, 0x0D}; // Magic word for 155 // pack200 156 final int[] word = new int[4]; 157 for (int i = 0; i < word.length; i++) { 158 word[i] = inputStream.read(); 159 } 160 boolean compressedWithE0 = false; 161 for (int m = 0; m < magic.length; m++) { 162 if (word[m] != magic[m]) { 163 compressedWithE0 = true; 164 } 165 } 166 inputStream.reset(); 167 if (compressedWithE0) { // The original Jar was not packed, so just 168 // copy it across 169 final JarInputStream jarInputStream = new JarInputStream(inputStream); 170 JarEntry jarEntry; 171 while ((jarEntry = jarInputStream.getNextJarEntry()) != null) { 172 outputStream.putNextEntry(jarEntry); 173 final byte[] bytes = new byte[16384]; 174 int bytesRead = jarInputStream.read(bytes); 175 while (bytesRead != -1) { 176 outputStream.write(bytes, 0, bytesRead); 177 bytesRead = jarInputStream.read(bytes); 178 } 179 outputStream.closeEntry(); 180 } 181 } else { 182 int i = 0; 183 while (available(inputStream)) { 184 i++; 185 final Segment segment = new Segment(); 186 segment.setLogLevel(logLevel); 187 segment.setLogStream(logFile != null ? (OutputStream) logFile : (OutputStream) System.out); 188 segment.setPreRead(false); 189 190 if (i == 1) { 191 segment.log(Segment.LOG_LEVEL_VERBOSE, 192 "Unpacking from " + inputFileName + " to " + outputFileName); 193 } 194 segment.log(Segment.LOG_LEVEL_VERBOSE, "Reading segment " + i); 195 if (overrideDeflateHint) { 196 segment.overrideDeflateHint(deflateHint); 197 } 198 segment.unpack(inputStream, outputStream); 199 outputStream.flush(); 200 201 if (inputStream instanceof FileInputStream) { 202 inputFileName = ((FileInputStream) inputStream).getFD().toString(); 203 } 204 } 205 } 206 } finally { 207 try { 208 inputStream.close(); 209 } catch (final Exception e) { 210 } 211 try { 212 outputStream.close(); 213 } catch (final Exception e) { 214 } 215 if (logFile != null) { 216 try { 217 logFile.close(); 218 } catch (final Exception e) { 219 } 220 } 221 } 222 if (removePackFile) { 223 boolean deleted = false; 224 if (inputFileName != null) { 225 final File file = new File(inputFileName); 226 deleted = file.delete(); 227 } 228 if (!deleted) { 229 throw new Pack200Exception("Failed to delete the input file."); 230 } 231 } 232 } 233 234}