0N/A/*
2362N/A * Copyright (c) 2004, 2010, Oracle and/or its affiliates. All rights reserved.
0N/A * DO NOT ALTER OR REMOVE COPYRIGHT NOTICES OR THIS FILE HEADER.
0N/A *
0N/A * This code is free software; you can redistribute it and/or modify it
0N/A * under the terms of the GNU General Public License version 2 only, as
2362N/A * published by the Free Software Foundation. Oracle designates this
0N/A * particular file as subject to the "Classpath" exception as provided
2362N/A * by Oracle in the LICENSE file that accompanied this code.
0N/A *
0N/A * This code is distributed in the hope that it will be useful, but WITHOUT
0N/A * ANY WARRANTY; without even the implied warranty of MERCHANTABILITY or
0N/A * FITNESS FOR A PARTICULAR PURPOSE. See the GNU General Public License
0N/A * version 2 for more details (a copy is included in the LICENSE file that
0N/A * accompanied this code).
0N/A *
0N/A * You should have received a copy of the GNU General Public License version
0N/A * 2 along with this work; if not, write to the Free Software Foundation,
0N/A * Inc., 51 Franklin St, Fifth Floor, Boston, MA 02110-1301 USA.
0N/A *
2362N/A * Please contact Oracle, 500 Oracle Parkway, Redwood Shores, CA 94065 USA
2362N/A * or visit www.oracle.com if you need additional information or have any
2362N/A * questions.
0N/A */
0N/A
0N/Apackage sun.tools.jstat;
0N/A
0N/Aimport java.util.*;
0N/Aimport java.net.*;
0N/Aimport java.io.*;
0N/A
0N/A/**
0N/A * A class for finding a specific special option in the jstat_options file.
0N/A *
0N/A * @author Brian Doherty
0N/A * @since 1.5
0N/A */
0N/Apublic class OptionFinder {
0N/A
0N/A private static final boolean debug = false;
0N/A
0N/A List<URL> optionsSources;
0N/A
0N/A public OptionFinder(List<URL> optionsSources) {
0N/A this.optionsSources = optionsSources;
0N/A }
0N/A
0N/A public OptionFormat getOptionFormat(String option, boolean useTimestamp) {
0N/A OptionFormat of = getOptionFormat(option, optionsSources);
0N/A OptionFormat tof = null;
0N/A if ((of != null) && (useTimestamp)) {
0N/A // prepend the timestamp column as first column
0N/A tof = getOptionFormat("timestamp", optionsSources);
0N/A if (tof != null) {
0N/A ColumnFormat cf = (ColumnFormat)tof.getSubFormat(0);
0N/A of.insertSubFormat(0, cf);
0N/A }
0N/A }
0N/A return of;
0N/A }
0N/A
0N/A protected OptionFormat getOptionFormat(String option, List<URL> sources) {
0N/A OptionFormat of = null;
0N/A for (URL u : sources) {
0N/A try {
0N/A Reader r = new BufferedReader(
0N/A new InputStreamReader(u.openStream()));
0N/A of = new Parser(r).parse(option);
0N/A if (of != null)
0N/A break;
0N/A } catch (IOException e) {
0N/A if (debug) {
0N/A System.err.println("Error processing " + u
0N/A + " : " + e.getMessage());
0N/A e.printStackTrace();
0N/A }
0N/A } catch (ParserException e) {
0N/A // Exception in parsing the options file.
0N/A System.err.println(u + ": " + e.getMessage());
0N/A System.err.println("Parsing of " + u + " aborted");
0N/A }
0N/A }
0N/A return of;
0N/A }
0N/A}
0N/A