1 /* 2 * Copyright (c) 2016, 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 jdk.internal.jmod.JmodFile; 29 30 import java.io.BufferedOutputStream; 31 import java.io.File; 32 import java.io.IOException; 33 import java.io.InputStream; 34 import java.io.OutputStream; 35 import java.io.UncheckedIOException; 36 import java.nio.file.Files; 37 import java.nio.file.Path; 38 import java.nio.file.Paths; 39 import java.util.zip.ZipEntry; 40 import java.util.zip.ZipOutputStream; 41 42 import static jdk.internal.jmod.JmodFile.*; 43 44 /** 45 * Output stream to write to JMOD file 46 */ 47 class JmodOutputStream extends OutputStream implements AutoCloseable { 48 /** 49 * This method creates (or overrides, if exists) the JMOD file, 50 * returning the the output stream to write to the JMOD file. 51 */ 52 static JmodOutputStream newOutputStream(Path file) throws IOException { 53 OutputStream out = Files.newOutputStream(file); 54 BufferedOutputStream bos = new BufferedOutputStream(out); 55 return new JmodOutputStream(bos); 56 } 57 58 private final ZipOutputStream zos; 59 private JmodOutputStream(OutputStream out) { 60 this.zos = new ZipOutputStream(out); 61 try { 62 JmodFile.writeMagicNumber(out); 63 } catch (IOException e) { 64 throw new UncheckedIOException(e); 65 } 66 } 67 68 /** 69 * Writes the input stream to the named entry of the given section. 70 */ 71 public void writeEntry(InputStream in, Section section, String name) 72 throws IOException 73 { 74 ZipEntry ze = newEntry(section, name); 75 zos.putNextEntry(ze); 76 in.transferTo(zos); 77 zos.closeEntry(); 78 } 79 80 /** 81 * Writes the given bytes to the named entry of the given section. 82 */ 83 public void writeEntry(byte[] bytes, Section section, String path) 84 throws IOException 85 { 86 ZipEntry ze = newEntry(section, path); 87 zos.putNextEntry(ze); 88 zos.write(bytes); 89 zos.closeEntry(); 90 } 91 92 /** 93 * Writes the given entry to the given input stream. 94 */ 95 public void writeEntry(InputStream in, Entry e) throws IOException { 96 zos.putNextEntry(e.zipEntry()); 97 zos.write(in.readAllBytes()); 98 zos.closeEntry(); 99 } 100 101 private ZipEntry newEntry(Section section, String path) { 102 String prefix = section.jmodDir(); 103 String name = Paths.get(prefix, path).toString() 104 .replace(File.separatorChar, '/'); 105 return new ZipEntry(name); 106 } 107 108 @Override 109 public void write(int b) throws IOException { 110 zos.write(b); 111 } 112 113 @Override 114 public void close() throws IOException { 115 zos.close(); 116 } 117 } 118