Source Code Cross Referenced for IDEResourceInfoUtils.java in  » IDE-Eclipse » ui-ide » org » eclipse » ui » internal » ide » dialogs » Java Source Code / Java DocumentationJava Source Code and Java Documentation

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Java Source Code / Java Documentation » IDE Eclipse » ui ide » org.eclipse.ui.internal.ide.dialogs 
Source Cross Referenced  Class Diagram Java Document (Java Doc) 


001:        /*******************************************************************************
002:         * Copyright (c) 2005, 2006 IBM Corporation and others.
003:         * All rights reserved. This program and the accompanying materials
004:         * are made available under the terms of the Eclipse Public License v1.0
005:         * which accompanies this distribution, and is available at
006:         * http://www.eclipse.org/legal/epl-v10.html
007:         *
008:         * Contributors:
009:         *     IBM Corporation - initial API and implementation
010:         *******************************************************************************/package org.eclipse.ui.internal.ide.dialogs;
011:
012:        import com.ibm.icu.text.DateFormat;
013:        import com.ibm.icu.text.MessageFormat;
014:        import com.ibm.icu.text.NumberFormat;
015:
016:        import java.net.URI;
017:        import java.util.ArrayList;
018:        import java.util.Date;
019:        import org.eclipse.core.filesystem.EFS;
020:        import org.eclipse.core.filesystem.IFileInfo;
021:        import org.eclipse.core.filesystem.IFileStore;
022:        import org.eclipse.core.resources.IFile;
023:        import org.eclipse.core.resources.IProject;
024:        import org.eclipse.core.resources.IResource;
025:        import org.eclipse.core.runtime.CoreException;
026:        import org.eclipse.core.runtime.IPath;
027:        import org.eclipse.core.runtime.IProgressMonitor;
028:        import org.eclipse.core.runtime.Path;
029:        import org.eclipse.core.runtime.content.IContentDescription;
030:        import org.eclipse.core.runtime.content.IContentType;
031:        import org.eclipse.osgi.util.NLS;
032:        import org.eclipse.ui.internal.ide.IDEWorkbenchMessages;
033:        import org.eclipse.ui.internal.ide.IDEWorkbenchPlugin;
034:
035:        /**
036:         * Utility class supporting common information required from resources.
037:         * 
038:         * @since 3.2
039:         * 
040:         */
041:        public class IDEResourceInfoUtils {
042:
043:            private static String BYTES_LABEL = IDEWorkbenchMessages.ResourceInfo_bytes;
044:
045:            /**
046:             * An empty string to reuse.
047:             */
048:            public static final String EMPTY_STRING = ""; //$NON-NLS-1$
049:
050:            private static String FILE_LABEL = IDEWorkbenchMessages.ResourceInfo_file;
051:
052:            private static String FILE_NOT_EXIST_TEXT = IDEWorkbenchMessages.ResourceInfo_fileNotExist;
053:
054:            private static String FILE_TYPE_FORMAT = IDEWorkbenchMessages.ResourceInfo_fileTypeFormat;
055:
056:            private static String FOLDER_LABEL = IDEWorkbenchMessages.ResourceInfo_folder;
057:
058:            private static String LINKED_FILE_LABEL = IDEWorkbenchMessages.ResourceInfo_linkedFile;
059:
060:            private static String LINKED_FOLDER_LABEL = IDEWorkbenchMessages.ResourceInfo_linkedFolder;
061:
062:            private static String MISSING_PATH_VARIABLE_TEXT = IDEWorkbenchMessages.ResourceInfo_undefinedPathVariable;
063:
064:            private static String NOT_EXIST_TEXT = IDEWorkbenchMessages.ResourceInfo_notExist;
065:
066:            private static String NOT_LOCAL_TEXT = IDEWorkbenchMessages.ResourceInfo_notLocal;
067:
068:            private static String PROJECT_LABEL = IDEWorkbenchMessages.ResourceInfo_project;
069:
070:            private static String UNKNOWN_LABEL = IDEWorkbenchMessages.ResourceInfo_unknown;
071:
072:            /**
073:             * Return whether or not the file called pathName exists.
074:             * 
075:             * @param pathName
076:             * @return boolean <code>true</code> if the file exists.
077:             * @see IFileInfo#exists()
078:             */
079:            public static boolean exists(String pathName) {
080:                IFileInfo info = getFileInfo(pathName);
081:                if (info == null) {
082:                    return false;
083:                }
084:                return info.exists();
085:            }
086:
087:            private static String getContentTypeString(
088:                    IContentDescription description) {
089:                if (description != null) {
090:                    IContentType contentType = description.getContentType();
091:                    if (contentType != null) {
092:                        return contentType.getName();
093:                    }
094:                }
095:                return null;
096:            }
097:
098:            /**
099:             * Return the value for the date String for the timestamp of the supplied
100:             * resource.
101:             * 
102:             * @param resource
103:             *            The resource to query
104:             * @return String
105:             */
106:            public static String getDateStringValue(IResource resource) {
107:                if (!resource.isLocal(IResource.DEPTH_ZERO)) {
108:                    return NOT_LOCAL_TEXT;
109:                }
110:
111:                // don't access the file system for closed projects (bug 151089)
112:                if (!isProjectAccessible(resource)) {
113:                    return UNKNOWN_LABEL;
114:                }
115:
116:                URI location = resource.getLocationURI();
117:                if (location == null) {
118:                    if (resource.isLinked()) {
119:                        return MISSING_PATH_VARIABLE_TEXT;
120:                    }
121:                    return NOT_EXIST_TEXT;
122:                }
123:
124:                IFileInfo info = getFileInfo(location);
125:                if (info == null) {
126:                    return UNKNOWN_LABEL;
127:                }
128:
129:                if (info.exists()) {
130:                    DateFormat format = DateFormat.getDateTimeInstance(
131:                            DateFormat.LONG, DateFormat.MEDIUM);
132:                    return format.format(new Date(info.getLastModified()));
133:                }
134:                return NOT_EXIST_TEXT;
135:            }
136:
137:            /**
138:             * Return the fileInfo at pathName or <code>null</code> if the format is
139:             * invalid or if the file info cannot be determined.
140:             * 
141:             * @param pathName
142:             * @return IFileInfo or <code>null</code>
143:             */
144:            public static IFileInfo getFileInfo(IPath pathName) {
145:                IFileStore store = getFileStore(pathName.toFile().toURI());
146:                if (store == null) {
147:                    return null;
148:                }
149:                return store.fetchInfo();
150:            }
151:
152:            /**
153:             * Return the fileInfo at pathName or <code>null</code> if the format is
154:             * invalid or if the file info cannot be determined.
155:             * 
156:             * @param pathName
157:             * @return IFileInfo or <code>null</code>
158:             */
159:            public static IFileInfo getFileInfo(String pathName) {
160:                IFileStore store = getFileStore(pathName);
161:                if (store == null) {
162:                    return null;
163:                }
164:                return store.fetchInfo();
165:            }
166:
167:            /**
168:             * Return the fileInfo for location. Return <code>null</code> if there is
169:             * a CoreException looking it up
170:             * 
171:             * @param location
172:             * @return String or <code>null</code>
173:             */
174:            public static IFileInfo getFileInfo(URI location) {
175:                IFileStore store = getFileStore(location);
176:                if (store == null) {
177:                    return null;
178:                }
179:                return store.fetchInfo();
180:            }
181:
182:            /**
183:             * Get the file store for the string.
184:             * 
185:             * @param string
186:             * @return IFileStore or <code>null</code> if there is a
187:             *         {@link CoreException}.
188:             */
189:            public static IFileStore getFileStore(String string) {
190:                return getFileStore(new Path(string).toFile().toURI());
191:            }
192:
193:            /**
194:             * Get the file store for the URI.
195:             * 
196:             * @param uri
197:             * @return IFileStore or <code>null</code> if there is a
198:             *         {@link CoreException}.
199:             */
200:            public static IFileStore getFileStore(URI uri) {
201:                try {
202:                    return EFS.getStore(uri);
203:                } catch (CoreException e) {
204:                    log(e);
205:                    return null;
206:                }
207:            }
208:
209:            /**
210:             * Get the location of a resource
211:             * 
212:             * @param resource
213:             * @return String the text to display the location
214:             */
215:            public static String getLocationText(IResource resource) {
216:                if (!resource.isLocal(IResource.DEPTH_ZERO)) {
217:                    return NOT_LOCAL_TEXT;
218:                }
219:
220:                URI resolvedLocation = resource.getLocationURI();
221:                URI location = resolvedLocation;
222:                if (resource.isLinked()) {
223:                    location = resource.getRawLocationURI();
224:                }
225:                if (location == null) {
226:                    return NOT_EXIST_TEXT;
227:                }
228:
229:                IFileStore store = getFileStore(location);
230:                // don't access the file system for closed projects (bug 151089)
231:                if (isProjectAccessible(resource) && resolvedLocation != null
232:                        && !isPathVariable(resource)) {
233:                    // No path variable used. Display the file not exist message
234:                    // in the location. Fixes bug 33318.
235:                    if (store == null) {
236:                        return UNKNOWN_LABEL;
237:                    }
238:                    if (!store.fetchInfo().exists()) {
239:                        return NLS.bind(FILE_NOT_EXIST_TEXT, store.toString());
240:                    }
241:                }
242:                if (store != null) {
243:                    return store.toString();
244:                }
245:                return location.toString();
246:            }
247:
248:            /**
249:             * Get the resolved location of a resource. This resolves path variables if
250:             * present in the resource path.
251:             * 
252:             * @param resource
253:             * @return String
254:             */
255:            public static String getResolvedLocationText(IResource resource) {
256:                if (!resource.isLocal(IResource.DEPTH_ZERO)) {
257:                    return NOT_LOCAL_TEXT;
258:                }
259:
260:                URI location = resource.getLocationURI();
261:                if (location == null) {
262:                    if (resource.isLinked()) {
263:                        return MISSING_PATH_VARIABLE_TEXT;
264:                    }
265:
266:                    return NOT_EXIST_TEXT;
267:                }
268:
269:                IFileStore store = getFileStore(location);
270:                if (store == null) {
271:                    return UNKNOWN_LABEL;
272:                }
273:
274:                // don't access the file system for closed projects (bug 151089)
275:                if (isProjectAccessible(resource)
276:                        && !store.fetchInfo().exists()) {
277:                    return NLS.bind(FILE_NOT_EXIST_TEXT, store.toString());
278:                }
279:
280:                return store.toString();
281:            }
282:
283:            /**
284:             * Return a String that indicates the size of the supplied file.
285:             * 
286:             * @param resource
287:             * @return String
288:             */
289:            public static String getSizeString(IResource resource) {
290:                if (resource.getType() != IResource.FILE) {
291:                    return ""; //$NON-NLS-1$
292:                }
293:
294:                IFile file = (IFile) resource;
295:                if (!file.isLocal(IResource.DEPTH_ZERO)) {
296:                    return NOT_LOCAL_TEXT;
297:                }
298:
299:                URI location = file.getLocationURI();
300:                if (location == null) {
301:                    if (file.isLinked()) {
302:                        return MISSING_PATH_VARIABLE_TEXT;
303:                    }
304:
305:                    return NOT_EXIST_TEXT;
306:                }
307:
308:                IFileInfo info = getFileInfo(location);
309:                if (info == null) {
310:                    return UNKNOWN_LABEL;
311:                }
312:
313:                if (info.exists()) {
314:                    return NLS.bind(BYTES_LABEL, NumberFormat.getInstance()
315:                            .format(new Long(info.getLength())));
316:                }
317:
318:                return NOT_EXIST_TEXT;
319:            }
320:
321:            /**
322:             * Get the string that identifies the type of this resource.
323:             * 
324:             * @param resource
325:             * @param description
326:             * @return String
327:             */
328:            public static String getTypeString(IResource resource,
329:                    IContentDescription description) {
330:
331:                if (resource.getType() == IResource.FILE) {
332:                    if (resource.isLinked()) {
333:                        return LINKED_FILE_LABEL;
334:                    }
335:
336:                    if (resource instanceof  IFile) {
337:                        String contentType = getContentTypeString(description);
338:                        if (contentType != null) {
339:                            return MessageFormat.format(FILE_TYPE_FORMAT,
340:                                    new String[] { contentType });
341:                        }
342:                    }
343:                    return FILE_LABEL;
344:                }
345:
346:                if (resource.getType() == IResource.FOLDER) {
347:                    if (resource.isLinked()) {
348:                        return LINKED_FOLDER_LABEL;
349:                    }
350:
351:                    return FOLDER_LABEL;
352:                }
353:
354:                if (resource.getType() == IResource.PROJECT) {
355:                    return PROJECT_LABEL;
356:                }
357:
358:                // Should not be possible
359:                return UNKNOWN_LABEL;
360:            }
361:
362:            /**
363:             * Returns whether the given resource is a linked resource bound to a path
364:             * variable.
365:             * 
366:             * @param resource
367:             *            resource to test
368:             * @return boolean <code>true</code> the given resource is a linked
369:             *         resource bound to a path variable. <code>false</code> the given
370:             *         resource is either not a linked resource or it is not using a
371:             *         path variable.
372:             */
373:            private static boolean isPathVariable(IResource resource) {
374:                if (!resource.isLinked()) {
375:                    return false;
376:                }
377:
378:                URI resolvedLocation = resource.getLocationURI();
379:                if (resolvedLocation == null) {
380:                    // missing path variable
381:                    return true;
382:                }
383:                URI rawLocation = resource.getRawLocationURI();
384:                if (resolvedLocation.equals(rawLocation)) {
385:                    return false;
386:                }
387:
388:                return true;
389:            }
390:
391:            /**
392:             * Returns whether the resource's project is available
393:             */
394:            private static boolean isProjectAccessible(IResource resource) {
395:                IProject project = resource.getProject();
396:                return project != null && project.isAccessible();
397:            }
398:
399:            /**
400:             * Return the file stores that are a child of store that the filter accepts.
401:             * 
402:             * @param store
403:             * @param fileFilter
404:             * @param monitor
405:             * @return IFileStore[]
406:             */
407:            public static IFileStore[] listFileStores(IFileStore store,
408:                    IFileStoreFilter fileFilter, IProgressMonitor monitor) {
409:                ArrayList result = new ArrayList();
410:                IFileStore[] children;
411:                try {
412:                    children = store.childStores(EFS.NONE, monitor);
413:                } catch (CoreException e) {
414:                    log(e);
415:                    return new IFileStore[0];
416:                }
417:                for (int i = 0; i < children.length; i++) {
418:                    if (fileFilter.accept(children[i])) {
419:                        result.add(children[i]);
420:                    }
421:                }
422:                IFileStore[] stores = new IFileStore[result.size()];
423:                result.toArray(stores);
424:                return stores;
425:            }
426:
427:            private static void log(CoreException e) {
428:                IDEWorkbenchPlugin.log(e.getMessage(), e.getStatus());
429:            }
430:
431:        }
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