IncludeExclude


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11   * If applicable, add the following below the CDDL Header, with the fields
12   * enclosed by brackets [] replaced by your own identifying information:
13   * "Portions Copyrighted [year] [name of copyright owner]"
14   *
15   * The Original Software is NetBeans. The Initial Developer of the Original
16   * Software is Sun Microsystems, Inc. Portions Copyright 1997-2006 Sun
17   * Microsystems, Inc. All Rights Reserved.
18   */
19  
20  package org.netbeans.upgrade;
21  
22  import java.io.*;
23  import java.util.*;
24  import java.util.jar.*;
25  import java.util.regex.*;
26  import org.openide.util.Union2;
27  
28  
29  
30  /** A test that is initialized based on includes and excludes.
31   *
32   * @author Jaroslav Tulach
33   */
34  final class IncludeExclude extends AbstractSet {
35      /** List<Boolean and Pattern>
36       */
37      private List<Union2<Boolean  , Pattern>> patterns = new ArrayList<Union2<Boolean  , Pattern>> ();
38  
39      private IncludeExclude () {
40      }
41  
42      /** Reads the include/exclude set from a given reader.
43       * @param r reader
44       * @return set that accepts names based on include exclude from the file
45       */
46      public static Set create (Reader r) throws IOException {
47          IncludeExclude set = new IncludeExclude ();
48          
49          BufferedReader buf = new BufferedReader (r);
50          for (;;) {
51              String   line = buf.readLine ();
52              if (line == null) break;
53              
54              line = line.trim ();
55              if (line.length () == 0 || line.startsWith ("#")) {
56                  continue;
57              }
58              
59              Boolean   plus;
60              if (line.startsWith ("include ")) {
61                  line = line.substring (8);
62                  plus = Boolean.TRUE;
63              } else {
64                  if (line.startsWith ("exclude ")) {
65                      line = line.substring (8);
66                      plus = Boolean.FALSE;
67                  } else {
68                      throw new java.io.IOException   ("Wrong line: " + line);
69                  }
70              }
71              
72              Pattern p = Pattern.compile (line);
73              
74              set.patterns.add (Union2.<Boolean  ,Pattern>createFirst(plus));
75              set.patterns.add (Union2.<Boolean  ,Pattern>createSecond(p));
76          }
77          
78          return set; 
79      }
80      
81      
82      public Iterator iterator () {
83          return null;
84      }
85      
86      public int size () {
87          return 0;
88      }
89      
90      public boolean contains (Object   o) {
91          String   s = (String  )o;
92          
93          boolean yes = false;
94          
95          Iterator<Union2<Boolean  ,Pattern>> it = patterns.iterator ();
96          while (it.hasNext ()) {
97              Boolean   include = it.next ().first();
98              Pattern p = it.next ().second();
99              
100             Matcher m = p.matcher (s);
101             if (m.matches ()) {
102                 yes = include.booleanValue ();
103             }
104         }
105         
106         return yes;
107     }
108     
109 }
110
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