1 /* 2 * Copyright (c) 2016, 2020, 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.jmod; 27 28 import java.io.BufferedOutputStream; 29 import java.io.File; 30 import java.io.IOException; 31 import java.io.InputStream; 32 import java.io.OutputStream; 33 import java.io.UncheckedIOException; 34 import java.nio.file.Files; 35 import java.nio.file.Path; 36 import java.nio.file.Paths; 37 import java.util.zip.ZipEntry; 38 import java.util.zip.ZipOutputStream; 39 import jdk.internal.jmod.JmodFile; 40 41 import static jdk.internal.jmod.JmodFile.*; 42 43 /** 44 * Output stream to write to JMOD file 45 */ 46 class JmodOutputStream extends OutputStream implements AutoCloseable { 47 /** 48 * This method creates (or overrides, if exists) the JMOD file, 49 * returning the the output stream to write to the JMOD file. 50 */ 51 static JmodOutputStream newOutputStream(Path file) throws IOException { 52 OutputStream out = Files.newOutputStream(file); 53 BufferedOutputStream bos = new BufferedOutputStream(out); 54 return new JmodOutputStream(bos); 55 } 56 57 private final ZipOutputStream zos; 58 private JmodOutputStream(OutputStream out) { 59 this.zos = new ZipOutputStream(out); 60 try { 61 JmodFile.writeMagicNumber(out); 62 } catch (IOException e) { 63 throw new UncheckedIOException(e); 64 } 65 } 66 67 /** 68 * Writes the input stream to the named entry of the given section. 69 */ 70 public void writeEntry(InputStream in, Section section, String name) 71 throws IOException 72 { 73 ZipEntry ze = newEntry(section, name); 74 zos.putNextEntry(ze); 75 in.transferTo(zos); 76 zos.closeEntry(); 77 } 78 79 /** 80 * Writes the given bytes to the named entry of the given section. 81 */ 82 public void writeEntry(byte[] bytes, Section section, String path) 83 throws IOException 84 { 85 ZipEntry ze = newEntry(section, path); 86 zos.putNextEntry(ze); 87 zos.write(bytes); 88 zos.closeEntry(); 89 } 90 91 /** 92 * Writes the given entry to the given input stream. 93 */ 94 public void writeEntry(InputStream in, Entry e) throws IOException { 95 ZipEntry e1 = e.zipEntry(); 96 // Only preserve attributes which won't change by 97 // inflating and deflating the entry. See: 98 // sun.tools.jar.Main.update() 99 ZipEntry e2 = new ZipEntry(e1.getName()); 100 e2.setMethod(e1.getMethod()); 101 e2.setTime(e1.getTime()); 102 e2.setComment(e1.getComment()); 103 e2.setExtra(e1.getExtra()); 104 if (e1.getMethod() == ZipEntry.STORED) { 105 e2.setSize(e1.getSize()); 106 e2.setCrc(e1.getCrc()); 107 } 108 zos.putNextEntry(e2); 109 zos.write(in.readAllBytes()); 110 zos.closeEntry(); 111 } 112 113 private ZipEntry newEntry(Section section, String path) { 114 String prefix = section.jmodDir(); 115 String name = Paths.get(prefix, path).toString() 116 .replace(File.separatorChar, '/'); 117 return new ZipEntry(name); 118 } 119 120 @Override 121 public void write(int b) throws IOException { 122 zos.write(b); 123 } 124 125 @Override 126 public void close() throws IOException { 127 zos.close(); 128 } 129 } 130