J. Duke | 319a3b9 | 2007-12-01 00:00:00 +0000 | [diff] [blame^] | 1 | /* |
| 2 | * Copyright 2004 Sun Microsystems, Inc. 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. Sun designates this |
| 8 | * particular file as subject to the "Classpath" exception as provided |
| 9 | * by Sun 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 Sun Microsystems, Inc., 4150 Network Circle, Santa Clara, |
| 22 | * CA 95054 USA or visit www.sun.com if you need additional information or |
| 23 | * have any questions. |
| 24 | */ |
| 25 | |
| 26 | package sun.tools.jstat; |
| 27 | |
| 28 | import java.util.*; |
| 29 | import java.net.*; |
| 30 | import java.io.*; |
| 31 | |
| 32 | /** |
| 33 | * A class for finding a specific special option in the jstat_options file. |
| 34 | * |
| 35 | * @author Brian Doherty |
| 36 | * @since 1.5 |
| 37 | */ |
| 38 | public class OptionFinder { |
| 39 | |
| 40 | private static final boolean debug = false; |
| 41 | |
| 42 | URL[] optionsSources; |
| 43 | |
| 44 | public OptionFinder(URL[] optionsSources) { |
| 45 | this.optionsSources = optionsSources; |
| 46 | } |
| 47 | |
| 48 | public OptionFormat getOptionFormat(String option, boolean useTimestamp) { |
| 49 | OptionFormat of = getOptionFormat(option, optionsSources); |
| 50 | OptionFormat tof = null; |
| 51 | if ((of != null) && (useTimestamp)) { |
| 52 | // prepend the timestamp column as first column |
| 53 | tof = getOptionFormat("timestamp", optionsSources); |
| 54 | if (tof != null) { |
| 55 | ColumnFormat cf = (ColumnFormat)tof.getSubFormat(0); |
| 56 | of.insertSubFormat(0, cf); |
| 57 | } |
| 58 | } |
| 59 | return of; |
| 60 | } |
| 61 | |
| 62 | protected OptionFormat getOptionFormat(String option, URL[] sources) { |
| 63 | OptionFormat of = null; |
| 64 | for (int i = 0; (i < sources.length) && (of == null); i++) { |
| 65 | try { |
| 66 | URL u = sources[i]; |
| 67 | Reader r = new BufferedReader( |
| 68 | new InputStreamReader(u.openStream())); |
| 69 | of = new Parser(r).parse(option); |
| 70 | } catch (IOException e) { |
| 71 | if (debug) { |
| 72 | System.err.println("Error processing " + sources[i] |
| 73 | + " : " + e.getMessage()); |
| 74 | e.printStackTrace(); |
| 75 | } |
| 76 | } catch (ParserException e) { |
| 77 | // Exception in parsing the options file. |
| 78 | System.err.println(sources[i] + ": " + e.getMessage()); |
| 79 | System.err.println("Parsing of " + sources[i] + " aborted"); |
| 80 | } |
| 81 | } |
| 82 | return of; |
| 83 | } |
| 84 | } |