1 /* ============================================================
2 * JRobin : Pure java implementation of RRDTool's functionality
3 * ============================================================
4 *
5 * Project Info: http://www.jrobin.org
6 * Project Lead: Sasa Markovic (saxon@jrobin.org)
7 *
8 * Developers: Sasa Markovic (saxon@jrobin.org)
9 *
10 *
11 * (C) Copyright 2003-2005, by Sasa Markovic.
12 *
13 * This library is free software; you can redistribute it and/or modify it under the terms
14 * of the GNU Lesser General Public License as published by the Free Software Foundation;
15 * either version 2.1 of the License, or (at your option) any later version.
16 *
17 * This library is distributed in the hope that it will be useful, but WITHOUT ANY WARRANTY;
18 * without even the implied warranty of MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.
19 * See the GNU Lesser General Public License for more details.
20 *
21 * You should have received a copy of the GNU Lesser General Public License along with this
22 * library; if not, write to the Free Software Foundation, Inc., 59 Temple Place, Suite 330,
23 * Boston, MA 02111-1307, USA.
24 */
25 package org.jrobin.graph;
26
27 import org.jrobin.core.RrdException;
28 import org.jrobin.core.Util;
29 import org.jrobin.data.DataProcessor;
30
31 import java.util.regex.Matcher;
32 import java.util.regex.Pattern;
33
34 class PrintText extends CommentText {
35 static final String UNIT_MARKER = "([^%]?)%(s|S)";
36 static final Pattern UNIT_PATTERN = Pattern.compile(UNIT_MARKER);
37
38 private final String srcName, consolFun;
39 private final boolean includedInGraph;
40
41 PrintText(String srcName, String consolFun, String text, boolean includedInGraph) {
42 super(text);
43 this.srcName = srcName;
44 this.consolFun = consolFun;
45 this.includedInGraph = includedInGraph;
46 }
47
48 boolean isPrint() {
49 return !includedInGraph;
50 }
51
52 void resolveText(DataProcessor dproc, ValueScaler valueScaler) throws RrdException {
53 super.resolveText(dproc, valueScaler);
54 if (resolvedText != null) {
55 double value = dproc.getAggregate(srcName, consolFun);
56 Matcher matcher = UNIT_PATTERN.matcher(resolvedText);
57 if (matcher.find()) {
58 // unit specified
59 ValueScaler.Scaled scaled = valueScaler.scale(value, matcher.group(2).equals("s"));
60 resolvedText = resolvedText.substring(0, matcher.start()) +
61 matcher.group(1) + scaled.unit + resolvedText.substring(matcher.end());
62 value = scaled.value;
63 }
64 resolvedText = Util.sprintf(resolvedText, value);
65 trimIfGlue();
66 }
67 }
68 }
69