| /* |
| * Copyright (c) 2004, 2010, Oracle and/or its affiliates. All rights reserved. |
| * DO NOT ALTER OR REMOVE COPYRIGHT NOTICES OR THIS FILE HEADER. |
| * |
| * This code is free software; you can redistribute it and/or modify it |
| * under the terms of the GNU General Public License version 2 only, as |
| * published by the Free Software Foundation. Oracle designates this |
| * particular file as subject to the "Classpath" exception as provided |
| * by Oracle in the LICENSE file that accompanied this code. |
| * |
| * This code is distributed in the hope that it will be useful, but WITHOUT |
| * ANY WARRANTY; without even the implied warranty of MERCHANTABILITY or |
| * FITNESS FOR A PARTICULAR PURPOSE. See the GNU General Public License |
| * version 2 for more details (a copy is included in the LICENSE file that |
| * accompanied this code). |
| * |
| * You should have received a copy of the GNU General Public License version |
| * 2 along with this work; if not, write to the Free Software Foundation, |
| * Inc., 51 Franklin St, Fifth Floor, Boston, MA 02110-1301 USA. |
| * |
| * Please contact Oracle, 500 Oracle Parkway, Redwood Shores, CA 94065 USA |
| * or visit www.oracle.com if you need additional information or have any |
| * questions. |
| */ |
| |
| package sun.tools.jstat; |
| |
| import java.util.*; |
| import java.net.*; |
| import java.io.*; |
| |
| /** |
| * A class for listing the available options in the jstat_options file. |
| * |
| * @author Brian Doherty |
| * @since 1.5 |
| */ |
| public class OptionLister { |
| private static final boolean debug = false; |
| private List<URL> sources; |
| |
| public OptionLister(List<URL> sources) { |
| this.sources = sources; |
| } |
| |
| public void print(PrintStream ps) { |
| Comparator<OptionFormat> c = new Comparator<OptionFormat>() { |
| public int compare(OptionFormat o1, OptionFormat o2) { |
| OptionFormat of1 = o1; |
| OptionFormat of2 = o2; |
| return (of1.getName().compareTo(of2.getName())); |
| } |
| }; |
| |
| Set<OptionFormat> options = new TreeSet<OptionFormat>(c); |
| |
| for (URL u : sources) { |
| try { |
| Reader r = new BufferedReader( |
| new InputStreamReader(u.openStream())); |
| Set<OptionFormat> s = new Parser(r).parseOptions(); |
| options.addAll(s); |
| } catch (IOException e) { |
| if (debug) { |
| System.err.println(e.getMessage()); |
| e.printStackTrace(); |
| } |
| } catch (ParserException e) { |
| // Exception in parsing the options file. |
| System.err.println(u + ": " + e.getMessage()); |
| System.err.println("Parsing of " + u + " aborted"); |
| } |
| } |
| |
| for ( OptionFormat of : options) { |
| if (of.getName().compareTo("timestamp") == 0) { |
| // ignore the special timestamp OptionFormat. |
| continue; |
| } |
| ps.println("-" + of.getName()); |
| } |
| } |
| } |