119 lines
4.9 KiB
Java
119 lines
4.9 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 com.sun.source.util.JavacTask;
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import com.sun.tools.javac.api.JavacTool;
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import com.sun.tools.javac.util.Context;
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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.Arrays;
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import java.util.EnumSet;
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import java.util.List;
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import java.util.Set;
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import javax.tools.JavaFileManager;
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import javax.tools.JavaFileManager.Location;
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import javax.tools.JavaFileObject;
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import javax.tools.JavaFileObject.Kind;
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import javax.tools.StandardLocation;
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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, or not available in the boot JDK.
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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 ProbeModular {
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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 " +
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ProbeModular.class.getName() +
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" <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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JavacTool tool = JavacTool.create();
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Context ctx = new Context();
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String version = System.getProperty("java.specification.version");
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JavacTask task = tool.getTask(null, null, null,
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Arrays.asList("--release", version),
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null, null, ctx);
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task.getElements().getTypeElement("java.lang.Object");
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JavaFileManager fm = ctx.get(JavaFileManager.class);
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try (OutputStream out = new FileOutputStream(outFile)) {
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for (Location modLoc : LOCATIONS) {
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for (Set<JavaFileManager.Location> module :
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fm.listLocationsForModules(modLoc)) {
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for (JavaFileManager.Location loc : module) {
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Iterable<JavaFileObject> files =
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fm.list(loc,
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"",
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EnumSet.of(Kind.CLASS),
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true);
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for (JavaFileObject jfo : files) {
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try (InputStream is = jfo.openInputStream();
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InputStream in =
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new BufferedInputStream(is)) {
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ByteArrayOutputStream baos =
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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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String hex = String.format("%02x", read);
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textual.append(hex);
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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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}
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}
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}
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}
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}
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}
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}
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//where:
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private static final List<StandardLocation> LOCATIONS =
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Arrays.asList(StandardLocation.SYSTEM_MODULES,
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StandardLocation.UPGRADE_MODULE_PATH);
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}
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