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.stream.Stream; 34 import java.util.zip.ZipEntry; 35 import java.util.zip.ZipFile; 36 import jdk.tools.jlink.internal.Archive.Entry.EntryType; 37 38 /** 39 * An Archive backed by a jar file. 40 */ 41 public abstract class JarArchive implements Archive { 42 43 /** 44 * An entry located in a jar file. 45 */ 46 private class JarEntry extends Entry { 47 48 private final long size; 49 private final ZipEntry entry; 50 private final ZipFile file; 51 52 JarEntry(String path, String name, EntryType type, ZipFile file, ZipEntry entry) { 53 super(JarArchive.this, path, name, type); 54 this.entry = Objects.requireNonNull(entry); 55 this.file = Objects.requireNonNull(file); 56 size = entry.getSize(); 57 } 58 59 /** 60 * Returns the number of uncompressed bytes for this entry. 61 */ 62 @Override 63 public long size() { 64 return size; 65 } 66 67 @Override 68 public InputStream stream() throws IOException { 69 return file.getInputStream(entry); 70 } 71 } 72 73 private static final String MODULE_INFO = "module-info.class"; 74 75 private final Path file; 76 private final String moduleName; 77 // currently processed ZipFile 78 private ZipFile zipFile; 79 80 protected JarArchive(String mn, Path file) { 81 Objects.requireNonNull(mn); 82 Objects.requireNonNull(file); 83 this.moduleName = mn; 84 this.file = file; 85 } 86 87 @Override 88 public String moduleName() { 89 return moduleName; 90 } 91 92 @Override 93 public Path getPath() { 94 return file; 95 } 96 97 @Override 98 public Stream<Entry> entries() { 99 try { 100 if (zipFile == null) { 101 open(); 102 } 103 } catch (IOException ioe) { 104 throw new UncheckedIOException(ioe); 105 } 106 return zipFile.stream().map(this::toEntry).filter(n -> n != null); 107 } 108 109 abstract EntryType toEntryType(String entryName); 110 111 abstract String getFileName(String entryName); 112 113 private Entry toEntry(ZipEntry ze) { 114 String name = ze.getName(); 115 String fn = getFileName(name); 116 117 if (ze.isDirectory() || fn.startsWith("_")) { 118 return null; 119 } 120 121 EntryType rt = toEntryType(name); 122 123 if (fn.equals(MODULE_INFO)) { 124 fn = moduleName + "/" + MODULE_INFO; 125 } 126 return new JarEntry(ze.getName(), fn, rt, zipFile, ze); 127 } 128 129 @Override 130 public void close() throws IOException { 131 if (zipFile != null) { 132 zipFile.close(); 133 } 134 } 135 136 @Override 137 public void open() throws IOException { 138 if (zipFile != null) { 139 zipFile.close(); 140 } 141 zipFile = new ZipFile(file.toFile()); 142 } 143 }