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Java > Open Source Codes > net > sf > clirr > ant > PatternSetFilter


1 //////////////////////////////////////////////////////////////////////////////
2 // Clirr: compares two versions of a java library for binary compatibility
3 // Copyright (C) 2003 - 2005 Lars Kühne
4 //
5 // This library is free software; you can redistribute it and/or
6 // modify it under the terms of the GNU Lesser General Public
7 // License as published by the Free Software Foundation; either
8 // version 2.1 of the License, or (at your option) any later version.
9 //
10 // This library is distributed in the hope that it will be useful,
11 // but WITHOUT ANY WARRANTY; without even the implied warranty of
12 // MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
13 // Lesser General Public License for more details.
14 //
15 // You should have received a copy of the GNU Lesser General Public
16 // License along with this library; if not, write to the Free Software
17 // Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA 02111-1307 USA
18 //////////////////////////////////////////////////////////////////////////////
19
20 package net.sf.clirr.ant;
21
22 import net.sf.clirr.core.ClassFilter;
23
24 import java.util.List JavaDoc;
25 import java.io.File JavaDoc;
26
27 import org.apache.bcel.classfile.JavaClass;
28 import org.apache.tools.ant.types.selectors.SelectorUtils;
29 import org.apache.tools.ant.types.PatternSet;
30 import org.apache.tools.ant.Project;
31
32 /**
33  * A ClassFilter that uses Ant PatternSets as the decision criteria.
34  *
35  * @author lkuehne
36  */
37 class PatternSetFilter implements ClassFilter
38 {
39     private final Project project;
40     private final List JavaDoc patternSets;
41
42
43     /**
44      * Creates a new PatternSetFilter.
45      * @param project the current Ant project
46      * @param patternSets a List of Ant PatternSet objects
47      */
48     public PatternSetFilter(Project project, List JavaDoc patternSets)
49     {
50         this.project = project;
51         this.patternSets = patternSets;
52     }
53
54
55     public boolean isSelected(JavaClass clazz)
56     {
57         // The patternset evaluation code below was copied from Apache Ant's Expand task.
58 // I feel this code should be available as a library function inside Ant somewhere...
59 String JavaDoc className = clazz.getClassName();
60         String JavaDoc name = className.replace('.', File.separatorChar);
61
62
63         if (patternSets == null || patternSets.isEmpty())
64         {
65             return true;
66         }
67
68         boolean included = false;
69         for (int i = 0; i < patternSets.size(); i++)
70         {
71             PatternSet p = (PatternSet) patternSets.get(i);
72             p.getIncludePatterns(project);
73
74             String JavaDoc[] incls = p.getIncludePatterns(project);
75             if (incls == null || incls.length == 0)
76             {
77                 // no include pattern implicitly means includes="**"
78 incls = new String JavaDoc[] {"**"};
79             }
80
81             for (int w = 0; w < incls.length; w++)
82             {
83                 String JavaDoc pattern = incls[w].replace('/', File.separatorChar)
84                         .replace('\\', File.separatorChar);
85                 if (pattern.endsWith(File.separator))
86                 {
87                     pattern += "**";
88                 }
89
90                 included = SelectorUtils.matchPath(pattern, name);
91                 if (included)
92                 {
93                     break;
94                 }
95             }
96
97             if (!included)
98             {
99                 break;
100             }
101
102
103             String JavaDoc[] excls = p.getExcludePatterns(project);
104             if (excls != null)
105             {
106                 for (int w = 0; w < excls.length; w++)
107                 {
108                     String JavaDoc pattern = excls[w]
109                             .replace('/', File.separatorChar)
110                             .replace('\\', File.separatorChar);
111                     if (pattern.endsWith(File.separator))
112                     {
113                         pattern += "**";
114                     }
115                     included = !(SelectorUtils.matchPath(pattern, name));
116                     if (!included)
117                     {
118                         break;
119                     }
120                 }
121             }
122         }
123         project.log("included " + className + " = " + included, Project.MSG_VERBOSE);
124         return included;
125     }
126 }
127
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