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 java.io.BufferedInputStream; 29 import java.io.ByteArrayOutputStream; 30 import java.io.File; 31 import java.io.FileOutputStream; 32 import java.io.IOException; 33 import java.io.InputStream; 34 import java.io.OutputStream; 35 import java.nio.charset.Charset; 36 import java.util.EnumSet; 37 38 import javax.tools.JavaCompiler; 39 import javax.tools.JavaFileObject; 40 import javax.tools.JavaFileObject.Kind; 41 import javax.tools.StandardJavaFileManager; 42 import javax.tools.StandardLocation; 43 import javax.tools.ToolProvider; 44 45 /**A tool to dump the content of the default javac's bootclasspath. This tool should not use any 46 * features not available on the oldest supported target JDK, which is currently JDK 6. 47 * 48 * For more information on use of this site, please see CreateSymbols. 49 */ 50 public class Probe { 51 52 public static void main(String... args) throws IOException { 53 if (args.length != 1) { 54 System.err.println("Not enough arguments."); 55 System.err.println("Usage:"); 56 System.err.println(" java " + Probe.class.getName() + " <output-file>"); 57 return ; 58 } 59 60 File outFile = new File(args[0]); 61 Charset cs = Charset.forName("UTF-8"); 62 JavaCompiler compiler = ToolProvider.getSystemJavaCompiler(); 63 StandardJavaFileManager fm = compiler.getStandardFileManager(null, null, null); 64 OutputStream out = new FileOutputStream(outFile); 65 66 try { 67 Iterable<JavaFileObject> bcpFiles = 68 fm.list(StandardLocation.PLATFORM_CLASS_PATH, "", EnumSet.of(Kind.CLASS), true); 69 70 for (JavaFileObject jfo : bcpFiles) { 71 InputStream in = new BufferedInputStream(jfo.openInputStream()); 72 try { 73 ByteArrayOutputStream baos = new ByteArrayOutputStream(); 74 StringBuilder textual = new StringBuilder(); 75 int read; 76 77 while ((read = in.read()) != (-1)) { 78 baos.write(read); 79 textual.append(String.format("%02x", read)); 80 } 81 82 textual.append("\n"); 83 out.write(textual.toString().getBytes(cs)); 84 } finally { 85 in.close(); 86 } 87 } 88 } finally { 89 out.close(); 90 } 91 } 92 93 }