1 /* 2 * Copyright (c) 2014, Oracle and/or its affiliates. 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. Oracle designates this 8 * particular file as subject to the "Classpath" exception as provided 9 * by Oracle 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 Oracle, 500 Oracle Parkway, Redwood Shores, CA 94065 USA 22 * or visit www.oracle.com if you need additional information or have any 23 * questions. 24 */ 25 26 package jdk.tools.jlink.internal; 27 28 import java.io.IOException; 29 import java.io.InputStream; 30 import java.io.UncheckedIOException; 31 import java.nio.file.Path; 32 import java.util.Objects; 33 import java.util.jar.JarFile; 34 import java.util.stream.Stream; 35 import java.util.zip.ZipEntry; 36 import java.util.zip.ZipFile; 37 import jdk.tools.jlink.internal.Archive.Entry.EntryType; 38 39 /** 40 * An Archive backed by a jar file. 41 */ 42 public abstract class JarArchive implements Archive { 43 44 /** 45 * An entry located in a jar file. 46 */ 47 public class JarEntry extends Entry { 48 49 private final long size; 50 private final ZipEntry entry; 51 private final ZipFile file; 52 53 JarEntry(String path, String name, EntryType type, ZipFile file, ZipEntry entry) { 54 super(JarArchive.this, path, name, type); 55 this.entry = Objects.requireNonNull(entry); 56 this.file = Objects.requireNonNull(file); 57 size = entry.getSize(); 58 } 59 60 /** 61 * Returns the number of uncompressed bytes for this entry. 62 */ 63 @Override 64 public long size() { 65 return size; 66 } 67 68 @Override 69 public InputStream stream() throws IOException { 70 return file.getInputStream(entry); 71 } 72 } 73 74 private final Path file; 75 private final String moduleName; 76 private final Runtime.Version version; 77 // currently processed JarFile 78 private JarFile jarFile; 79 80 protected JarArchive(String mn, Path file, Runtime.Version version) { 81 Objects.requireNonNull(mn); 82 Objects.requireNonNull(file); 83 this.moduleName = mn; 84 this.file = file; 85 this.version = Objects.requireNonNull(version); 86 } 87 88 @Override 89 public String moduleName() { 90 return moduleName; 91 } 92 93 @Override 94 public Path getPath() { 95 return file; 96 } 97 98 @Override 99 public Stream<Entry> entries() { 100 try { 101 if (jarFile == null) { 102 open(); 103 } 104 } catch (IOException ioe) { 105 throw new UncheckedIOException(ioe); 106 } 107 return jarFile.versionedStream() 108 .filter(je -> !je.isDirectory()) 109 .map(this::toEntry); 110 } 111 112 abstract EntryType toEntryType(String entryName); 113 114 abstract String getFileName(String entryName); 115 116 abstract Entry toEntry(ZipEntry ze); 117 118 @Override 119 public void close() throws IOException { 120 if (jarFile != null) { 121 jarFile.close(); 122 } 123 } 124 125 @Override 126 public void open() throws IOException { 127 if (jarFile != null) { 128 jarFile.close(); 129 } 130 jarFile = new JarFile(file.toFile(), true, ZipFile.OPEN_READ, version); 131 } 132 133 protected JarFile getJarFile() { 134 return jarFile; 135 } 136 }