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1
11 package org.eclipse.search.internal.core.text;
12
13 import java.util.Arrays  ;
14 import java.util.HashSet ;
15 import java.util.Iterator ;
16 import java.util.Set ;
17 import java.util.regex.Matcher ;
18 import java.util.regex.Pattern ;
19
20 import org.eclipse.core.resources.IFile;
21 import org.eclipse.core.resources.IResource;
22 import org.eclipse.core.resources.IResourceProxy;
23 import org.eclipse.core.runtime.IAdaptable;
24
25 import org.eclipse.ui.IWorkingSet;
26
27 import org.eclipse.search.internal.core.SearchScope;
28 import org.eclipse.search.internal.ui.SearchMessages;
29
30
33 public class TextSearchScope extends SearchScope {
34
35 private static class WorkspaceScope extends TextSearchScope {
36
37 private WorkspaceScope() {
38 super(SearchMessages.getString("WorkspaceScope")); }
40
41 public void add(IResource element) {
42 }
44
45 public boolean encloses(IResourceProxy proxy) {
46 if (proxy.getType() == IResource.FILE && skipFile(proxy))
47 return false;
48 return true;
49 }
50 }
51
52 private Set fExtensions= new HashSet (3);
53
54
57 public static TextSearchScope newWorkspaceScope() {
58 return new WorkspaceScope();
59 }
60
61 public TextSearchScope(String description) {
62 super(description);
63 }
64
65 public TextSearchScope(String description, IResource[] resources) {
66 super(description, resources);
67 }
68
69 public TextSearchScope(String description, IAdaptable[] elements) {
70 super(description, convertToResources(elements));
71
72 }
73
74 public TextSearchScope(String description, IWorkingSet[] workingSets) {
75 super(description, convertToResources(getElements(workingSets)));
76 }
77
78 private static IResource[] convertToResources(IAdaptable[] elements) {
79 int length= elements.length;
80 Set resources= new HashSet (length);
81 for (int i= 0; i < length; i++) {
82 IResource resource= (IResource)elements[i].getAdapter(IResource.class);
83 if (resource != null)
84 resources.add(resource);
85 }
86 return (IResource[])resources.toArray(new IResource[resources.size()]);
87 }
88
89 private static IAdaptable[] getElements(IWorkingSet[] workingSets) {
90 int length= workingSets.length;
91 Set elements= new HashSet (length);
92 for (int i= 0; i < length; i++) {
93 elements.addAll(Arrays.asList(workingSets[i].getElements()));
94 }
95 return (IAdaptable[])elements.toArray(new IAdaptable[elements.size()]);
96 }
97
98
101 public void addExtension(String extension) {
102 Pattern pattern= Pattern.compile(asRegEx(extension), Pattern.CASE_INSENSITIVE);
103 fExtensions.add(pattern.matcher("")); }
105
106
109 private String asRegEx(String pattern) {
110
111 StringBuffer out= new StringBuffer (pattern.length());
112
113 boolean escaped= false;
114 boolean quoting= false;
115
116 int i= 0;
117 while (i < pattern.length()) {
118 char ch= pattern.charAt(i++);
119
120 if (ch == '*' && !escaped) {
121 if (quoting) {
122 out.append("\\E"); quoting= false;
124 }
125 out.append(".*"); escaped= false;
127 continue;
128 } else if (ch == '?' && !escaped) {
129 if (quoting) {
130 out.append("\\E"); quoting= false;
132 }
133 out.append("."); escaped= false;
135 continue;
136 } else if (ch == '\\' && !escaped) {
137 escaped= true;
138 continue;
139
140 } else if (ch == '\\' && escaped) {
141 escaped= false;
142 if (quoting) {
143 out.append("\\E"); quoting= false;
145 }
146 out.append("\\\\"); continue;
148 }
149
150 if (!quoting) {
151 out.append("\\Q"); quoting= true;
153 }
154 if (escaped && ch != '*' && ch != '?' && ch != '\\')
155 out.append('\\');
156 out.append(ch);
157 escaped= ch == '\\';
158
159 }
160 if (quoting)
161 out.append("\\E");
163 return out.toString();
164 }
165
166
171 public void addExtensions(Set extensions) {
172 if (extensions == null)
173 return;
174 Iterator iter= extensions.iterator();
175 while (iter.hasNext()) {
176 Object obj= iter.next();
177 if (obj instanceof String )
178 addExtension((String )obj);
179 }
180 }
181
182
185 public boolean encloses(IResourceProxy proxy) {
186 if (proxy.getType() == IResource.FILE && skipFile(proxy))
187 return false;
188 return super.encloses(proxy);
189 }
190
191 boolean skipFile(IResourceProxy proxy) {
192 if (proxy != null) {
193 Iterator iter= fExtensions.iterator();
194 while (iter.hasNext()) {
195 if (((Matcher )iter.next()).reset(proxy.getName()).matches())
196 return false;
197 }
198 }
199 return true;
200 }
201
202
207 public boolean encloses(IResource element) {
208 if (element.getType() == IResource.FILE && skipFile((IFile)element))
209 return false;
210 return super.encloses(element);
211 }
212
213 boolean skipFile(IFile file) {
214 if (file != null) {
215 Iterator iter= fExtensions.iterator();
216 while (iter.hasNext()) {
217 if (((Matcher )iter.next()).reset(file.getName()).matches())
218 return false;
219 }
220 }
221 return true;
222 }
223 }
224 |
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