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package org.apache.commons.finder; |
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import java.io.File; |
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import java.util.ArrayList; |
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import java.util.Collections; |
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import java.util.Iterator; |
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import java.util.List; |
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import java.util.Map; |
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public class FileFinder implements Finder { |
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private List findListeners; |
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public FileFinder() { |
47 | 15 | super(); |
48 | 15 | } |
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public File[] find(File directory) { |
57 | 0 | return find(directory, Collections.EMPTY_MAP); |
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} |
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public File[] find(File directory, Map options) { |
67 | 15 | List retlist = new ArrayList(); |
68 | 15 | find(directory, options, retlist); |
69 | 15 | File[] files = (File[]) retlist.toArray(new File[retlist.size()]); |
70 | 15 | return files; |
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} |
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public void find(File directory, Map options, List foundFiles) { |
85 | 15 | if (foundFiles == null) { |
86 | 0 | throw new IllegalArgumentException("foundFiles list cannot be null"); |
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} |
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89 | 15 | notifyDirectoryStarted(directory); |
90 | 15 | boolean depthFirst = toBoolean(options.get(Finder.DEPTH)); |
91 | 15 | int maxDepth = toInt(options.get(Finder.MAXDEPTH)); |
92 | 15 | int minDepth = toInt(options.get(Finder.MINDEPTH)); |
93 | 15 | boolean ignoreHiddenDirs = toBoolean(options.get(Finder.IGNORE_HIDDEN_DIRS)); |
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95 | 15 | FindingFilter filter = new FindingFilter(options); |
96 | 15 | int startIdx = foundFiles.size(); |
97 | 15 | find(directory, filter, depthFirst, foundFiles); |
98 | 15 | if (filter.accept(directory)) { |
99 | 3 | if (depthFirst) { |
100 | 0 | foundFiles.add(directory); |
101 | 0 | } else { |
102 | 3 | foundFiles.add(0, directory); |
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} |
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} |
105 | 15 | int endIdx = foundFiles.size(); |
106 | 15 | notifyDirectoryFinished(directory, foundFiles, startIdx, endIdx); |
107 | 15 | } |
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private void find(File directory, FindingFilter filter, boolean depthFirst, List retlist) { |
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111 | 180 | File[] list = directory.listFiles(); |
112 | 180 | if (list == null) { |
113 | 0 | return; |
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} |
115 | 180 | int sz = list.length; |
116 | 468 | for (int i = 0; i < sz; i++) { |
117 | 288 | File tmp = list[i]; |
118 | 288 | if (!depthFirst && filter.accept(tmp)) { |
119 | 17 | retlist.add(tmp); |
120 | 17 | notifyFileFound(directory, tmp); |
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} |
122 | 288 | if (tmp.isDirectory()) { |
123 | 165 | notifyDirectoryStarted(tmp); |
124 | 165 | int startIdx = retlist.size(); |
125 | 165 | find(tmp, filter, depthFirst, retlist); |
126 | 165 | int endIdx = retlist.size(); |
127 | 165 | notifyDirectoryFinished(tmp, retlist, startIdx, endIdx); |
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} |
129 | 288 | if (depthFirst && filter.accept(tmp)) { |
130 | 0 | retlist.add(tmp); |
131 | 0 | notifyFileFound(directory, tmp); |
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} |
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} |
134 | 180 | } |
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public void addFindListener(FindListener listener) { |
143 | 0 | if (findListeners == null) { |
144 | 0 | findListeners = new ArrayList(); |
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} |
146 | 0 | findListeners.add(listener); |
147 | 0 | } |
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public void removeFindListener(FindListener listener) { |
155 | 0 | if (findListeners != null) { |
156 | 0 | findListeners.remove(listener); |
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} |
158 | 0 | } |
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protected void notifyDirectoryStarted(File directory) { |
167 | 180 | if (!directory.isDirectory()) { |
168 | 0 | return; |
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} |
170 | 180 | if (findListeners != null) { |
171 | 0 | FindEvent fe = new FindEvent(this, "directoryStarted", directory); |
172 | 0 | Iterator it = findListeners.iterator(); |
173 | 0 | while (it.hasNext()) { |
174 | 0 | FindListener findListener = (FindListener) it.next(); |
175 | 0 | findListener.directoryStarted(fe); |
176 | 0 | } |
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} |
178 | 180 | } |
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protected void notifyDirectoryFinished(File directory, File[] files) { |
187 | 0 | if (!directory.isDirectory()) { |
188 | 0 | return; |
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} |
190 | 0 | if (findListeners != null) { |
191 | 0 | FindEvent fe = new FindEvent(this, "directoryFinished", directory, files); |
192 | 0 | Iterator it = findListeners.iterator(); |
193 | 0 | while (it.hasNext()) { |
194 | 0 | FindListener findListener = (FindListener) it.next(); |
195 | 0 | findListener.directoryFinished(fe); |
196 | 0 | } |
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} |
198 | 0 | } |
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private void notifyDirectoryFinished(File directory, List files, int startIdx, int endIdx) { |
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202 | 180 | if (!directory.isDirectory() || findListeners == null || findListeners.size() == 0) { |
203 | 180 | return; |
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} |
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207 | 0 | File[] filesa = (File[]) files.subList(startIdx, endIdx).toArray(new File[endIdx - startIdx]); |
208 | 0 | notifyDirectoryFinished(directory, filesa); |
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210 | 0 | } |
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protected void notifyFileFound(File directory, File file) { |
219 | 17 | if (file.isDirectory()) { |
220 | 1 | return; |
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} |
222 | 16 | if (findListeners != null) { |
223 | 0 | FindEvent fe = new FindEvent(this, "fileFound", directory, file); |
224 | 0 | Iterator it = findListeners.iterator(); |
225 | 0 | while (it.hasNext()) { |
226 | 0 | FindListener findListener = (FindListener) it.next(); |
227 | 0 | findListener.fileFound(fe); |
228 | 0 | } |
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} |
230 | 16 | } |
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private static int toInt(Object obj) { |
240 | 30 | if (obj == null) { |
241 | 30 | return 0; |
242 | 0 | } else if (obj instanceof Number) { |
243 | 0 | return ((Number) obj).intValue(); |
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} else { |
245 | 0 | String str = obj.toString(); |
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try { |
247 | 0 | return Integer.parseInt(str.toString()); |
248 | 0 | } catch(NumberFormatException nfe) { |
249 | 0 | throw new IllegalArgumentException("String argument " + str + " must be parseable as an integer"); |
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} |
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} |
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} |
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private static boolean toBoolean(Object obj) { |
261 | 30 | if (obj == null) { |
262 | 30 | return false; |
263 | 0 | } else if (obj instanceof Boolean) { |
264 | 0 | return ((Boolean) obj).booleanValue(); |
265 | 0 | } else if (obj instanceof Number) { |
266 | 0 | return ((Number) obj).intValue() != 0; |
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} else { |
268 | 0 | String str = obj.toString(); |
269 | 0 | return new Boolean(str).booleanValue(); |
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} |
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} |
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} |