1 /* 2 * Copyright (c) 2015, 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 org.openjdk.buildtools.symbolgenerator; 27 28 import com.sun.source.util.JavacTask; 29 import com.sun.tools.javac.api.JavacTool; 30 import com.sun.tools.javac.util.Context; 31 import java.io.BufferedInputStream; 32 import java.io.ByteArrayOutputStream; 33 import java.io.File; 34 import java.io.FileOutputStream; 35 import java.io.IOException; 36 import java.io.InputStream; 37 import java.io.OutputStream; 38 import java.nio.charset.Charset; 39 import java.util.Arrays; 40 import java.util.EnumSet; 41 import java.util.List; 42 import java.util.Set; 43 44 import javax.tools.JavaFileManager; 45 import javax.tools.JavaFileManager.Location; 46 import javax.tools.JavaFileObject; 47 import javax.tools.JavaFileObject.Kind; 48 import javax.tools.StandardLocation; 49 50 /**A tool to dump the content of the default javac's bootclasspath. This tool should not use any 51 * features not available on the oldest supported target JDK, or not available in the boot JDK. 52 * 53 * For more information on use of this site, please see CreateSymbols. 54 */ 55 public class ProbeModular { 56 57 public static void main(String... args) throws IOException { 58 if (args.length != 1) { 59 System.err.println("Not enough arguments."); 60 System.err.println("Usage:"); 61 System.err.println(" java " + 62 ProbeModular.class.getName() + 63 " <output-file>"); 64 return ; 65 } 66 67 File outFile = new File(args[0]); 68 Charset cs = Charset.forName("UTF-8"); 69 JavacTool tool = JavacTool.create(); 70 Context ctx = new Context(); 71 String version = System.getProperty("java.specification.version"); 72 JavacTask task = tool.getTask(null, null, null, 73 Arrays.asList("--release", version), 74 null, null, ctx); 75 task.getElements().getTypeElement("java.lang.Object"); 76 JavaFileManager fm = ctx.get(JavaFileManager.class); 77 78 try (OutputStream out = new FileOutputStream(outFile)) { 79 for (Location modLoc : LOCATIONS) { 80 for (Set<JavaFileManager.Location> module : 81 fm.listLocationsForModules(modLoc)) { 82 for (JavaFileManager.Location loc : module) { 83 Iterable<JavaFileObject> files = 84 fm.list(loc, 85 "", 86 EnumSet.of(Kind.CLASS), 87 true); 88 89 for (JavaFileObject jfo : files) { 90 try (InputStream is = jfo.openInputStream(); 91 InputStream in = 92 new BufferedInputStream(is)) { 93 ByteArrayOutputStream baos = 94 new ByteArrayOutputStream(); 95 StringBuilder textual = new StringBuilder(); 96 int read; 97 98 while ((read = in.read()) != (-1)) { 99 baos.write(read); 100 String hex = String.format("%02x", read); 101 textual.append(hex); 102 } 103 104 textual.append("\n"); 105 out.write(textual.toString().getBytes(cs)); 106 } 107 } 108 } 109 } 110 } 111 } 112 } 113 //where: 114 private static final List<StandardLocation> LOCATIONS = 115 Arrays.asList(StandardLocation.SYSTEM_MODULES, 116 StandardLocation.UPGRADE_MODULE_PATH); 117 118 }