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1   /*
2    * Copyright (C) 2015, Google Inc.
3    * and other copyright owners as documented in the project's IP log.
4    *
5    * This program and the accompanying materials are made available
6    * under the terms of the Eclipse Distribution License v1.0 which
7    * accompanies this distribution, is reproduced below, and is
8    * available at http://www.eclipse.org/org/documents/edl-v10.php
9    *
10   * All rights reserved.
11   *
12   * Redistribution and use in source and binary forms, with or
13   * without modification, are permitted provided that the following
14   * conditions are met:
15   *
16   * - Redistributions of source code must retain the above copyright
17   *   notice, this list of conditions and the following disclaimer.
18   *
19   * - Redistributions in binary form must reproduce the above
20   *   copyright notice, this list of conditions and the following
21   *   disclaimer in the documentation and/or other materials provided
22   *   with the distribution.
23   *
24   * - Neither the name of the Eclipse Foundation, Inc. nor the
25   *   names of its contributors may be used to endorse or promote
26   *   products derived from this software without specific prior
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28   *
29   * THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND
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31   * INCLUDING, BUT NOT LIMITED TO, THE IMPLIED WARRANTIES
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42   */
43  package org.eclipse.jgit.gitrepo;
44  
45  import java.io.File;
46  import java.io.FileInputStream;
47  import java.io.FileOutputStream;
48  import java.io.IOException;
49  import java.nio.channels.FileChannel;
50  import java.util.ArrayList;
51  import java.util.Arrays;
52  import java.util.Collection;
53  import java.util.Collections;
54  import java.util.HashSet;
55  import java.util.List;
56  import java.util.Set;
57  
58  import org.eclipse.jgit.lib.Repository;
59  
60  /**
61   * The representation of a repo sub project.
62   *
63   * @see <a href="https://code.google.com/p/git-repo/">git-repo project page</a>
64   * @since 4.0
65   */
66  public class RepoProject implements Comparable<RepoProject> {
67  	private final String name;
68  	private final String path;
69  	private final String revision;
70  	private final String remote;
71  	private final Set<String> groups;
72  	private final List<CopyFile> copyfiles;
73  	private final List<LinkFile> linkfiles;
74  	private String recommendShallow;
75  	private String url;
76  	private String defaultRevision;
77  
78  	/**
79  	 * The representation of a reference file configuration.
80  	 *
81  	 * @since 4.8
82  	 */
83  	public static class ReferenceFile {
84  		final Repository repo;
85  		final String path;
86  		final String src;
87  		final String dest;
88  
89  		/**
90  		 * @param repo
91  		 *            the super project.
92  		 * @param path
93  		 *            the path of the project containing this copyfile config.
94  		 * @param src
95  		 *            the source path relative to the sub repo.
96  		 * @param dest
97  		 *            the destination path relative to the super project.
98  		 */
99  		public ReferenceFile(Repository repo, String path, String src, String dest) {
100 			this.repo = repo;
101 			this.path = path;
102 			this.src = src;
103 			this.dest = dest;
104 		}
105 	}
106 
107 	/**
108 	 * The representation of a copy file configuration.
109 	 */
110 	public static class CopyFile extends ReferenceFile {
111 		/**
112 		 * @param repo
113 		 *            the super project.
114 		 * @param path
115 		 *            the path of the project containing this copyfile config.
116 		 * @param src
117 		 *            the source path relative to the sub repo.
118 		 * @param dest
119 		 *            the destination path relative to the super project.
120 		 */
121 		public CopyFile(Repository repo, String path, String src, String dest) {
122 			super(repo, path, src, dest);
123 		}
124 
125 		/**
126 		 * Do the copy file action.
127 		 *
128 		 * @throws IOException
129 		 */
130 		public void copy() throws IOException {
131 			File srcFile = new File(repo.getWorkTree(),
132 					path + "/" + src); //$NON-NLS-1$
133 			File destFile = new File(repo.getWorkTree(), dest);
134 			FileInputStream input = new FileInputStream(srcFile);
135 			try {
136 				FileOutputStream output = new FileOutputStream(destFile);
137 				try {
138 					FileChannel channel = input.getChannel();
139 					output.getChannel().transferFrom(
140 							channel, 0, channel.size());
141 				} finally {
142 					output.close();
143 				}
144 			} finally {
145 				input.close();
146 			}
147 		}
148 	}
149 
150 	/**
151 	 * The representation of a link file configuration.
152 	 *
153 	 * @since 4.8
154 	 */
155 	public static class LinkFile extends ReferenceFile {
156 		/**
157 		 * @param repo
158 		 *            the super project.
159 		 * @param path
160 		 *            the path of the project containing this linkfile config.
161 		 * @param src
162 		 *            the source path relative to the sub repo.
163 		 * @param dest
164 		 *            the destination path relative to the super project.
165 		 */
166 		public LinkFile(Repository repo, String path, String src, String dest) {
167 			super(repo, path, src, dest);
168 		}
169 	}
170 
171 	/**
172 	 * Constructor for RepoProject
173 	 *
174 	 * @param name
175 	 *            the relative path to the {@code remote}
176 	 * @param path
177 	 *            the relative path to the super project
178 	 * @param revision
179 	 *            a SHA-1 or branch name or tag name
180 	 * @param remote
181 	 *            name of the remote definition
182 	 * @param groups
183 	 *            set of groups
184 	 * @param recommendShallow
185 	 *            recommendation for shallowness
186 	 * @since 4.4
187 	 */
188 	public RepoProject(String name, String path, String revision,
189 			String remote, Set<String> groups,
190 			String recommendShallow) {
191 		if (name == null) {
192 			throw new NullPointerException();
193 		}
194 		this.name = name;
195 		if (path != null)
196 			this.path = path;
197 		else
198 			this.path = name;
199 		this.revision = revision;
200 		this.remote = remote;
201 		this.groups = groups;
202 		this.recommendShallow = recommendShallow;
203 		copyfiles = new ArrayList<>();
204 		linkfiles = new ArrayList<>();
205 	}
206 
207 	/**
208 	 * Constructor for RepoProject
209 	 *
210 	 * @param name
211 	 *            the relative path to the {@code remote}
212 	 * @param path
213 	 *            the relative path to the super project
214 	 * @param revision
215 	 *            a SHA-1 or branch name or tag name
216 	 * @param remote
217 	 *            name of the remote definition
218 	 * @param groupsParam
219 	 *            comma separated group list
220 	 */
221 	public RepoProject(String name, String path, String revision,
222 			String remote, String groupsParam) {
223 		this(name, path, revision, remote, new HashSet<String>(), null);
224 		if (groupsParam != null && groupsParam.length() > 0)
225 			this.setGroups(groupsParam);
226 	}
227 
228 	/**
229 	 * Set the url of the sub repo.
230 	 *
231 	 * @param url
232 	 *            project url
233 	 * @return this for chaining.
234 	 */
235 	public RepoProject setUrl(String url) {
236 		this.url = url;
237 		return this;
238 	}
239 
240 	/**
241 	 * Set the url of the sub repo.
242 	 *
243 	 * @param groupsParam
244 	 *            comma separated group list
245 	 * @return this for chaining.
246 	 * @since 4.4
247 	 */
248 	public RepoProject setGroups(String groupsParam) {
249 		this.groups.clear();
250 		this.groups.addAll(Arrays.asList(groupsParam.split(","))); //$NON-NLS-1$
251 		return this;
252 	}
253 
254 	/**
255 	 * Set the default revision for the sub repo.
256 	 *
257 	 * @param defaultRevision
258 	 *            the name of the default revision
259 	 * @return this for chaining.
260 	 */
261 	public RepoProject setDefaultRevision(String defaultRevision) {
262 		this.defaultRevision = defaultRevision;
263 		return this;
264 	}
265 
266 	/**
267 	 * Get the name (relative path to the {@code remote}) of this sub repo.
268 	 *
269 	 * @return {@code name}
270 	 */
271 	public String getName() {
272 		return name;
273 	}
274 
275 	/**
276 	 * Get the path (relative path to the super project) of this sub repo.
277 	 *
278 	 * @return {@code path}
279 	 */
280 	public String getPath() {
281 		return path;
282 	}
283 
284 	/**
285 	 * Get the revision of the sub repo.
286 	 *
287 	 * @return {@code revision} if set, or {@code defaultRevision}.
288 	 */
289 	public String getRevision() {
290 		return revision == null ? defaultRevision : revision;
291 	}
292 
293 	/**
294 	 * Getter for the copyfile configurations.
295 	 *
296 	 * @return Immutable copy of {@code copyfiles}
297 	 */
298 	public List<CopyFile> getCopyFiles() {
299 		return Collections.unmodifiableList(copyfiles);
300 	}
301 
302 	/**
303 	 * Getter for the linkfile configurations.
304 	 *
305 	 * @return Immutable copy of {@code linkfiles}
306 	 * @since 4.8
307 	 */
308 	public List<LinkFile> getLinkFiles() {
309 		return Collections.unmodifiableList(linkfiles);
310 	}
311 
312 	/**
313 	 * Get the url of the sub repo.
314 	 *
315 	 * @return {@code url}
316 	 */
317 	public String getUrl() {
318 		return url;
319 	}
320 
321 	/**
322 	 * Get the name of the remote definition of the sub repo.
323 	 *
324 	 * @return {@code remote}
325 	 */
326 	public String getRemote() {
327 		return remote;
328 	}
329 
330 	/**
331 	 * Test whether this sub repo belongs to a specified group.
332 	 *
333 	 * @param group
334 	 *            a group
335 	 * @return true if {@code group} is present.
336 	 */
337 	public boolean inGroup(String group) {
338 		return groups.contains(group);
339 	}
340 
341 	/**
342 	 * Return the set of groups.
343 	 *
344 	 * @return a Set of groups.
345 	 * @since 4.4
346 	 */
347 	public Set<String> getGroups() {
348 		return groups;
349 	}
350 
351 	/**
352 	 * Return the recommendation for shallowness.
353 	 *
354 	 * @return the String of "clone-depth"
355 	 * @since 4.4
356 	 */
357 	public String getRecommendShallow() {
358 		return recommendShallow;
359 	}
360 
361 	/**
362 	 * Sets the recommendation for shallowness.
363 	 *
364 	 * @param recommendShallow
365 	 *            recommendation for shallowness
366 	 * @since 4.4
367 	 */
368 	public void setRecommendShallow(String recommendShallow) {
369 		this.recommendShallow = recommendShallow;
370 	}
371 
372 	/**
373 	 * Add a copy file configuration.
374 	 *
375 	 * @param copyfile a {@link org.eclipse.jgit.gitrepo.RepoProject.CopyFile} object.
376 	 */
377 	public void addCopyFile(CopyFile copyfile) {
378 		copyfiles.add(copyfile);
379 	}
380 
381 	/**
382 	 * Add a bunch of copyfile configurations.
383 	 *
384 	 * @param copyFiles
385 	 *            a collection of
386 	 *            {@link org.eclipse.jgit.gitrepo.RepoProject.CopyFile} objects
387 	 */
388 	public void addCopyFiles(Collection<CopyFile> copyFiles) {
389 		this.copyfiles.addAll(copyFiles);
390 	}
391 
392 	/**
393 	 * Clear all the copyfiles.
394 	 *
395 	 * @since 4.2
396 	 */
397 	public void clearCopyFiles() {
398 		this.copyfiles.clear();
399 	}
400 
401 	/**
402 	 * Add a link file configuration.
403 	 *
404 	 * @param linkfile a {@link org.eclipse.jgit.gitrepo.RepoProject.LinkFile} object.
405 	 * @since 4.8
406 	 */
407 	public void addLinkFile(LinkFile linkfile) {
408 		linkfiles.add(linkfile);
409 	}
410 
411 	/**
412 	 * Add a bunch of linkfile configurations.
413 	 *
414 	 * @param linkFiles
415 	 *            a collection of {@link LinkFile}s
416 	 * @since 4.8
417 	 */
418 	public void addLinkFiles(Collection<LinkFile> linkFiles) {
419 		this.linkfiles.addAll(linkFiles);
420 	}
421 
422 	/**
423 	 * Clear all the linkfiles.
424 	 *
425 	 * @since 4.8
426 	 */
427 	public void clearLinkFiles() {
428 		this.linkfiles.clear();
429 	}
430 
431 	private String getPathWithSlash() {
432 		if (path.endsWith("/")) //$NON-NLS-1$
433 			return path;
434 		else
435 			return path + "/"; //$NON-NLS-1$
436 	}
437 
438 	/**
439 	 * Check if this sub repo is the ancestor of given sub repo.
440 	 *
441 	 * @param that
442 	 *            non null
443 	 * @return true if this sub repo is the ancestor of given sub repo.
444 	 */
445 	public boolean isAncestorOf(RepoProject that) {
446 		return isAncestorOf(that.getPathWithSlash());
447 	}
448 
449 	/**
450 	 * Check if this sub repo is an ancestor of the given path.
451 	 *
452 	 * @param thatPath
453 	 *            path to be checked to see if it is within this repository
454 	 * @return true if this sub repo is an ancestor of the given path.
455 	 * @since 4.2
456 	 */
457 	public boolean isAncestorOf(String thatPath) {
458 		return thatPath.startsWith(getPathWithSlash());
459 	}
460 
461 	/** {@inheritDoc} */
462 	@Override
463 	public boolean equals(Object o) {
464 		if (o instanceof RepoProject) {
465 			RepoProject that = (RepoProject) o;
466 			return this.getPathWithSlash().equals(that.getPathWithSlash());
467 		}
468 		return false;
469 	}
470 
471 	/** {@inheritDoc} */
472 	@Override
473 	public int hashCode() {
474 		return this.getPathWithSlash().hashCode();
475 	}
476 
477 	/** {@inheritDoc} */
478 	@Override
479 	public int compareTo(RepoProject that) {
480 		return this.getPathWithSlash().compareTo(that.getPathWithSlash());
481 	}
482 }
483