94 lines
3.5 KiB
Java
94 lines
3.5 KiB
Java
/*
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* Copyright (c) 2015, Oracle and/or its affiliates. All rights reserved.
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* DO NOT ALTER OR REMOVE COPYRIGHT NOTICES OR THIS FILE HEADER.
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*
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* This code is free software; you can redistribute it and/or modify it
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* under the terms of the GNU General Public License version 2 only, as
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* published by the Free Software Foundation. Oracle designates this
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* particular file as subject to the "Classpath" exception as provided
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* by Oracle in the LICENSE file that accompanied this code.
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*
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* This code is distributed in the hope that it will be useful, but WITHOUT
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* ANY WARRANTY; without even the implied warranty of MERCHANTABILITY or
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* FITNESS FOR A PARTICULAR PURPOSE. See the GNU General Public License
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* version 2 for more details (a copy is included in the LICENSE file that
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* accompanied this code).
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*
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* You should have received a copy of the GNU General Public License version
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* 2 along with this work; if not, write to the Free Software Foundation,
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* Inc., 51 Franklin St, Fifth Floor, Boston, MA 02110-1301 USA.
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*
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* Please contact Oracle, 500 Oracle Parkway, Redwood Shores, CA 94065 USA
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* or visit www.oracle.com if you need additional information or have any
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* questions.
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*/
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package build.tools.symbolgenerator;
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import java.io.BufferedInputStream;
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import java.io.ByteArrayOutputStream;
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import java.io.File;
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import java.io.FileOutputStream;
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import java.io.IOException;
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import java.io.InputStream;
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import java.io.OutputStream;
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import java.nio.charset.Charset;
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import java.util.EnumSet;
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import javax.tools.JavaCompiler;
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import javax.tools.JavaFileObject;
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import javax.tools.JavaFileObject.Kind;
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import javax.tools.StandardJavaFileManager;
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import javax.tools.StandardLocation;
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import javax.tools.ToolProvider;
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/**A tool to dump the content of the default javac's bootclasspath. This tool should not use any
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* features not available on the oldest supported target JDK, which is currently JDK 6.
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*
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* For more information on use of this site, please see CreateSymbols.
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*/
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public class Probe {
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public static void main(String... args) throws IOException {
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if (args.length != 1) {
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System.err.println("Not enough arguments.");
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System.err.println("Usage:");
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System.err.println(" java " + Probe.class.getName() + " <output-file>");
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return ;
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}
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File outFile = new File(args[0]);
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Charset cs = Charset.forName("UTF-8");
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JavaCompiler compiler = ToolProvider.getSystemJavaCompiler();
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StandardJavaFileManager fm = compiler.getStandardFileManager(null, null, null);
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OutputStream out = new FileOutputStream(outFile);
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try {
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Iterable<JavaFileObject> bcpFiles =
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fm.list(StandardLocation.PLATFORM_CLASS_PATH, "", EnumSet.of(Kind.CLASS), true);
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for (JavaFileObject jfo : bcpFiles) {
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InputStream in = new BufferedInputStream(jfo.openInputStream());
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try {
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ByteArrayOutputStream baos = new ByteArrayOutputStream();
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StringBuilder textual = new StringBuilder();
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int read;
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while ((read = in.read()) != (-1)) {
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baos.write(read);
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textual.append(String.format("%02x", read));
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}
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textual.append("\n");
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out.write(textual.toString().getBytes(cs));
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} finally {
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in.close();
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}
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}
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} finally {
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out.close();
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}
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}
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}
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