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1
9 package com.vladium.emma.filter;
10
11 import java.util.ArrayList  ;
12 import java.util.Iterator ;
13 import java.util.List ;
14 import java.util.StringTokenizer ;
15
16 import com.vladium.util.WCMatcher;
17
18
22 public
23 interface IInclExclFilter
24 {
25
27
29 char INCLUSION_PREFIX = '+';
30 String INCLUSION_PREFIX_STRING = "+";
31 char EXCLUSION_PREFIX = '-';
32 String EXCLUSION_PREFIX_STRING = "-";
33
34 boolean included (final String s);
35
36 abstract class Factory
37 {
38 public static IInclExclFilter create (final String specs1, final String separators, final String [] specs2)
39 {
40 if ((specs1 == null) || (specs1.trim ().length () == 0))
41 return create (specs2);
42 else
43 {
44 final List _specs = new ArrayList ();
45
46 if (specs2 != null)
47 {
48 for (int s = 0; s < specs2.length; ++ s)
49 {
50 _specs.add (specs2 [s]);
51 }
52 }
53
54 for (StringTokenizer tokenizer = new StringTokenizer (specs1, separators);
55 tokenizer.hasMoreTokens (); )
56 {
57 _specs.add (tokenizer.nextToken ());
58 }
59
60 final String [] specs = new String [_specs.size ()];
61 _specs.toArray (specs);
62
63 return create (specs);
64 }
65 }
66
67 public static IInclExclFilter create (final String [] specs)
68 {
69 if ((specs == null) || (specs.length == 0))
70 return new WCInclExclFilter ((String []) null, (String []) null);
71
72 final List inclusions = new ArrayList ();
73 final List exclusions = new ArrayList ();
74
75 for (int i = 0, iLimit = specs.length; i < iLimit; ++ i)
76 {
77 final String spec = specs [i];
78
79 if (spec.length () > 0)
80 {
81 if (spec.charAt (0) == EXCLUSION_PREFIX)
82 exclusions.add (spec.substring (1));
83 else
84 {
85
87 if (spec.charAt (0) == INCLUSION_PREFIX)
88 inclusions.add (spec.substring (1));
89 else
90 inclusions.add (spec);
91 }
92 }
93 }
94
95 return new WCInclExclFilter (inclusions, exclusions);
96 }
97
98 public static IInclExclFilter create (final String [] inclusions,
99 final String [] exclusions)
100 {
101 return new WCInclExclFilter (inclusions, exclusions);
102 }
103
104 public static IInclExclFilter create (final List inclusions,
105 final List exclusions)
106 {
107 return new WCInclExclFilter (inclusions, exclusions);
108 }
109
110 private static final class WCInclExclFilter implements IInclExclFilter
111 {
112 public boolean included (final String s)
113 {
114 if (s == null) return false;
115
116 final char [] chars = s.toCharArray ();
117
118
121 final WCMatcher [] inclusions = m_inclusions;
122 final WCMatcher [] exclusions = m_exclusions;
123
124 if (inclusions != null)
125 {
126 boolean included = false;
127
128 for (int i = 0, iLimit = inclusions.length; i < iLimit; ++ i)
129 {
130 if (inclusions [i].matches (chars))
131 {
132 included = true;
133 break;
134 }
135 }
136
137 if (! included) return false;
138 }
139
140 if (exclusions != null)
141 {
142 for (int x = 0, xLimit = exclusions.length; x < xLimit; ++ x)
143 {
144 if (exclusions [x].matches (chars)) return false;
145 }
146 }
147
148 return true;
149 }
150
151
152 WCInclExclFilter (final String [] inclusions,
153 final String [] exclusions)
154 {
155 if ((inclusions == null) || (inclusions.length == 0))
156 m_inclusions = null;
157 else
158 {
159 m_inclusions = new WCMatcher [inclusions.length];
160
161 for (int i = 0; i < inclusions.length; ++ i)
162 {
163 m_inclusions [i] = WCMatcher.compile (inclusions [i]);
164 }
165 }
166
167 if ((exclusions == null) || (exclusions.length == 0))
168 m_exclusions = null;
169 else
170 {
171 m_exclusions = new WCMatcher [exclusions.length];
172
173 for (int i = 0; i < exclusions.length; ++ i)
174 {
175 m_exclusions [i] = WCMatcher.compile (exclusions [i]);
176 }
177 }
178 }
179
180 WCInclExclFilter (final List inclusions,
181 final List exclusions)
182 {
183 if ((inclusions == null) || inclusions.isEmpty ())
184 m_inclusions = null;
185 else
186 {
187 m_inclusions = new WCMatcher [inclusions.size ()];
188
189 int ii = 0;
190 for (Iterator i = inclusions.iterator (); i.hasNext (); ++ ii)
191 {
192 final String pattern = (String ) i.next ();
193
194 m_inclusions [ii] = WCMatcher.compile (pattern);
195 }
196 }
197
198 if ((exclusions == null) || exclusions.isEmpty ())
199 m_exclusions = null;
200 else
201 {
202 m_exclusions = new WCMatcher [exclusions.size ()];
203
204 int ii = 0;
205 for (Iterator i = exclusions.iterator (); i.hasNext (); ++ ii)
206 {
207 final String pattern = (String ) i.next ();
208
209 m_exclusions [ii] = WCMatcher.compile (pattern);
210 }
211 }
212 }
213
214
215 private final WCMatcher [] m_inclusions, m_exclusions;
216
217 }
219 }
221 } |
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