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()</code> 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 the given input and output file names. 062 * 063 * @param inputFile TODO 064 * @param outputFile TODO 065 * @throws FileNotFoundException if the input file does not exist 066 * @throws FileNotFoundException TODO 067 * @throws IOException TODO 068 */ 069 public Archive(final String inputFile, final String outputFile) throws FileNotFoundException, IOException { 070 this.inputFileName = inputFile; 071 this.outputFileName = outputFile; 072 inputStream = new FileInputStream(inputFile); 073 outputStream = new JarOutputStream(new BufferedOutputStream(new FileOutputStream(outputFile))); 074 } 075 076 /** 077 * Creates an Archive with streams for the input and output files. Note: If you use this method then calling 078 * {@link #setRemovePackFile(boolean)} will have no effect. 079 * 080 * @param inputStream TODO 081 * @param outputStream TODO 082 * @throws IOException TODO 083 */ 084 public Archive(final InputStream inputStream, final JarOutputStream outputStream) throws IOException { 085 this.inputStream = inputStream; 086 this.outputStream = outputStream; 087 } 088 089 /** 090 * Unpacks the Archive from the input file to the output file 091 * 092 * @throws Pack200Exception TODO 093 * @throws IOException TODO 094 */ 095 public void unpack() throws Pack200Exception, IOException { 096 outputStream.setComment("PACK200"); 097 try { 098 if (!inputStream.markSupported()) { 099 inputStream = new BufferedInputStream(inputStream); 100 if (!inputStream.markSupported()) { 101 throw new IllegalStateException(); 102 } 103 } 104 inputStream.mark(2); 105 if (((inputStream.read() & 0xFF) | (inputStream.read() & 0xFF) << 8) == GZIPInputStream.GZIP_MAGIC) { 106 inputStream.reset(); 107 inputStream = new BufferedInputStream(new GZIPInputStream(inputStream)); 108 } else { 109 inputStream.reset(); 110 } 111 inputStream.mark(4); 112 final int[] magic = {0xCA, 0xFE, 0xD0, 0x0D}; // Magic word for 113 // pack200 114 final int word[] = new int[4]; 115 for (int i = 0; i < word.length; i++) { 116 word[i] = inputStream.read(); 117 } 118 boolean compressedWithE0 = false; 119 for (int m = 0; m < magic.length; m++) { 120 if (word[m] != magic[m]) { 121 compressedWithE0 = true; 122 } 123 } 124 inputStream.reset(); 125 if (compressedWithE0) { // The original Jar was not packed, so just 126 // copy it across 127 final JarInputStream jarInputStream = new JarInputStream(inputStream); 128 JarEntry jarEntry; 129 while ((jarEntry = jarInputStream.getNextJarEntry()) != null) { 130 outputStream.putNextEntry(jarEntry); 131 final byte[] bytes = new byte[16384]; 132 int bytesRead = jarInputStream.read(bytes); 133 while (bytesRead != -1) { 134 outputStream.write(bytes, 0, bytesRead); 135 bytesRead = jarInputStream.read(bytes); 136 } 137 outputStream.closeEntry(); 138 } 139 } else { 140 int i = 0; 141 while (available(inputStream)) { 142 i++; 143 final Segment segment = new Segment(); 144 segment.setLogLevel(logLevel); 145 segment.setLogStream(logFile != null ? (OutputStream) logFile : (OutputStream) System.out); 146 segment.setPreRead(false); 147 148 if (i == 1) { 149 segment.log(Segment.LOG_LEVEL_VERBOSE, 150 "Unpacking from " + inputFileName + " to " + outputFileName); 151 } 152 segment.log(Segment.LOG_LEVEL_VERBOSE, "Reading segment " + i); 153 if (overrideDeflateHint) { 154 segment.overrideDeflateHint(deflateHint); 155 } 156 segment.unpack(inputStream, outputStream); 157 outputStream.flush(); 158 159 if (inputStream instanceof FileInputStream) { 160 inputFileName = ((FileInputStream) inputStream).getFD().toString(); 161 } 162 } 163 } 164 } finally { 165 try { 166 inputStream.close(); 167 } catch (final Exception e) { 168 } 169 try { 170 outputStream.close(); 171 } catch (final Exception e) { 172 } 173 if (logFile != null) { 174 try { 175 logFile.close(); 176 } catch (final Exception e) { 177 } 178 } 179 } 180 if (removePackFile) { 181 boolean deleted = false; 182 if (inputFileName != null) { 183 final File file = new File(inputFileName); 184 deleted = file.delete(); 185 } 186 if (!deleted) { 187 throw new Pack200Exception("Failed to delete the input file."); 188 } 189 } 190 } 191 192 private boolean available(final InputStream inputStream) throws IOException { 193 inputStream.mark(1); 194 final int check = inputStream.read(); 195 inputStream.reset(); 196 return check != -1; 197 } 198 199 /** 200 * If removePackFile is set to true, the input file is deleted after unpacking. 201 * 202 * @param removePackFile If true, the input file is deleted after unpacking. 203 */ 204 public void setRemovePackFile(final boolean removePackFile) { 205 this.removePackFile = removePackFile; 206 } 207 208 public void setVerbose(final boolean verbose) { 209 if (verbose) { 210 logLevel = Segment.LOG_LEVEL_VERBOSE; 211 } else if (logLevel == Segment.LOG_LEVEL_VERBOSE) { 212 logLevel = Segment.LOG_LEVEL_STANDARD; 213 } 214 } 215 216 public void setQuiet(final boolean quiet) { 217 if (quiet) { 218 logLevel = Segment.LOG_LEVEL_QUIET; 219 } else if (logLevel == Segment.LOG_LEVEL_QUIET) { 220 logLevel = Segment.LOG_LEVEL_QUIET; 221 } 222 } 223 224 public void setLogFile(final String logFileName) throws FileNotFoundException { 225 this.logFile = new FileOutputStream(logFileName); 226 } 227 228 public void setLogFile(final String logFileName, final boolean append) throws FileNotFoundException { 229 logFile = new FileOutputStream(logFileName, append); 230 } 231 232 public void setDeflateHint(final boolean deflateHint) { 233 overrideDeflateHint = true; 234 this.deflateHint = deflateHint; 235 } 236 237}