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1
11 package org.eclipse.search.internal.core;
12
13 import java.io.File  ;
14 import java.util.ArrayList ;
15 import java.util.Arrays ;
16 import java.util.HashSet ;
17 import java.util.Iterator ;
18 import java.util.Set ;
19 import java.util.regex.Matcher ;
20 import java.util.regex.Pattern ;
21
22 import org.eclipse.core.runtime.IAdaptable;
23 import org.eclipse.core.runtime.IPath;
24
25 import org.eclipse.core.resources.IResource;
26 import org.eclipse.core.resources.ResourcesPlugin;
27
28 import org.eclipse.jface.util.Assert;
29
30 import org.eclipse.ui.IWorkingSet;
31
32 import org.eclipse.search.internal.core.text.PatternConstructor;
33 import org.eclipse.search.internal.ui.SearchMessages;
34
35 public class SearchScope {
36
37
41 public static SearchScope newWorkspaceScope() {
42 return new SearchScope(SearchMessages.WorkspaceScope, new IResource[] { ResourcesPlugin.getWorkspace().getRoot() });
43 }
44
45
51 public static SearchScope newSearchScope(String description, IResource[] resources) {
52 return new SearchScope(description, removeRedundantEntries(resources));
53 }
54
55
61 public static SearchScope newSearchScope(String description, IWorkingSet[] workingSets) {
62 return new SearchScope(description, convertToResources(workingSets));
63 }
64
65 private static final boolean IS_CASE_SENSITIVE_FILESYSTEM = !new File ("Temp").equals(new File ("temp"));
67 private String fDescription;
68 private final IResource[] fRootElements;
69
70 private Set fFileNamePatterns= new HashSet (3);
71 private Matcher [] fFileNameMatchers= null;
72
73 private SearchScope(String description, IResource[] resources) {
74 Assert.isNotNull(description);
75 fDescription= description;
76 fRootElements= resources;
77 }
78
79
83 public String getDescription() {
84 return fDescription;
85 }
86
87
91 public IResource[] getRootElements() {
92 return fRootElements;
93 }
94
95
99 public void addFileNamePattern(String pattern) {
100 if (fFileNamePatterns.add(pattern)) {
101 fFileNameMatchers= null; }
103 }
104
105 private Matcher [] getFileNameMatchers() {
106 if (fFileNameMatchers == null) {
107 fFileNameMatchers= new Matcher [fFileNamePatterns.size()];
108 int i= 0;
109 for (Iterator iter= fFileNamePatterns.iterator(); iter.hasNext();) {
110 String ext= (String ) iter.next();
111 Pattern pattern= PatternConstructor.createPattern(ext, IS_CASE_SENSITIVE_FILESYSTEM, false);
112 fFileNameMatchers[i++]= pattern.matcher(""); }
114 }
115 return fFileNameMatchers;
116 }
117
118
123 public boolean matchesFileName(String fileName) {
124 Matcher [] matchers= getFileNameMatchers();
125 for (int i= 0; i < matchers.length; i++) {
126 if (matchers[i].reset(fileName).matches()) {
127 return true;
128 }
129 }
130 return matchers.length == 0;
131 }
132
133
137 public String getFileNamePatternDescription() {
138 String [] ext= (String []) fFileNamePatterns.toArray(new String [fFileNamePatterns.size()]);
139 Arrays.sort(ext);
140 StringBuffer buf= new StringBuffer ();
141 for (int i= 0; i < ext.length; i++) {
142 if (i > 0) {
143 buf.append(", "); }
145 buf.append(ext[i]);
146 }
147 return buf.toString();
148 }
149
150
151 private static IResource[] removeRedundantEntries(IResource[] elements) {
152 ArrayList res= new ArrayList ();
153 for (int i= 0; i < elements.length; i++) {
154 IResource curr= elements[i];
155 addToList(res, curr);
156 }
157 return (IResource[])res.toArray(new IResource[res.size()]);
158 }
159
160 private static IResource[] convertToResources(IWorkingSet[] workingSets) {
161 ArrayList res= new ArrayList ();
162 for (int i= 0; i < workingSets.length; i++) {
163 IAdaptable[] elements= workingSets[i].getElements();
164 for (int k= 0; k < elements.length; k++) {
165 IResource curr= (IResource) elements[k].getAdapter(IResource.class);
166 if (curr != null) {
167 addToList(res, curr);
168 }
169 }
170 }
171 return (IResource[]) res.toArray(new IResource[res.size()]);
172 }
173
174 private static void addToList(ArrayList res, IResource curr) {
175 IPath currPath= curr.getFullPath();
176 for (int k= res.size() - 1; k >= 0 ; k--) {
177 IResource other= (IResource) res.get(k);
178 IPath otherPath= other.getFullPath();
179 if (otherPath.isPrefixOf(currPath)) {
180 return;
181 }
182 if (currPath.isPrefixOf(otherPath)) {
183 res.remove(k);
184 }
185 }
186 res.add(curr);
187 }
188 }
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