Example usage for org.eclipse.jgit.diff RenameDetector compute

Introduction

In this page you can find the example usage for org.eclipse.jgit.diff RenameDetector compute.

Prototype

public List<DiffEntry> compute(ContentSource.Pair reader, ProgressMonitor pm)
        throws IOException, CancelledException 

Source Link

Document

Detect renames in the current file set.

Usage

From source file:org.eclipse.che.git.impl.jgit.JGitDiffPage.java

License:Open Source License

/**
 * Show changes between index and working tree.
 *
 * @param formatter//from  w w w  . j a v  a 2  s .c  om
 *            diff formatter
 * @return list of diff entries
 * @throws IOException
 *             if any i/o errors occurs
 */
private List<DiffEntry> indexToWorkingTree(DiffFormatter formatter) throws IOException {
    DirCache dirCache = null;
    ObjectReader reader = repository.newObjectReader();
    List<DiffEntry> diff;
    try {
        dirCache = repository.lockDirCache();
        DirCacheIterator iterA = new DirCacheIterator(dirCache);
        FileTreeIterator iterB = new FileTreeIterator(repository);
        // Seems bug in DiffFormatter when work with working. Disable detect
        // renames by formatter and do it later.
        formatter.setDetectRenames(false);
        diff = formatter.scan(iterA, iterB);
        if (!request.isNoRenames()) {
            // Detect renames.
            RenameDetector renameDetector = createRenameDetector();
            ContentSource.Pair sourcePairReader = new ContentSource.Pair(ContentSource.create(reader),
                    ContentSource.create(iterB));
            renameDetector.addAll(diff);
            diff = renameDetector.compute(sourcePairReader, NullProgressMonitor.INSTANCE);
        }
    } finally {
        reader.close();
        if (dirCache != null) {
            dirCache.unlock();
        }
    }
    return diff;
}

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From source file:org.eclipse.che.git.impl.jgit.JGitDiffPage.java

License:Open Source License

/**
 * Show changes between specified revision and working tree.
 *
 * @param commitId//from   w w  w.  j  a v a 2  s. c  o m
 *            id of commit
 * @param formatter
 *            diff formatter
 * @return list of diff entries
 * @throws IOException
 *             if any i/o errors occurs
 */
private List<DiffEntry> commitToWorkingTree(String commitId, DiffFormatter formatter) throws IOException {
    ObjectId commitA = repository.resolve(commitId);
    if (commitA == null) {
        File heads = new File(repository.getWorkTree().getPath() + "/.git/refs/heads");
        if (heads.exists() && heads.list().length == 0) {
            return Collections.emptyList();
        }
        throw new IllegalArgumentException("Invalid commit id " + commitId);
    }
    RevTree treeA;
    try (RevWalk revWalkA = new RevWalk(repository)) {
        treeA = revWalkA.parseTree(commitA);
    }

    List<DiffEntry> diff;
    try (ObjectReader reader = repository.newObjectReader()) {
        CanonicalTreeParser iterA = new CanonicalTreeParser();
        iterA.reset(reader, treeA);
        FileTreeIterator iterB = new FileTreeIterator(repository);
        // Seems bug in DiffFormatter when work with working. Disable detect
        // renames by formatter and do it later.
        formatter.setDetectRenames(false);
        diff = formatter.scan(iterA, iterB);
        if (!request.isNoRenames()) {
            // Detect renames.
            RenameDetector renameDetector = createRenameDetector();
            ContentSource.Pair sourcePairReader = new ContentSource.Pair(ContentSource.create(reader),
                    ContentSource.create(iterB));
            renameDetector.addAll(diff);
            diff = renameDetector.compute(sourcePairReader, NullProgressMonitor.INSTANCE);
        }
    }
    return diff;
}

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From source file:org.eclipse.egit.bc.BeyondCompareRepositoryActionHandler.java

License:Open Source License

protected String getPreviousPath(Repository repository, ObjectReader reader, RevCommit headCommit,
        RevCommit previousCommit, String path) throws IOException {
    TreeWalk walk = new TreeWalk(reader);
    walk.setRecursive(true);//w  w  w . jav  a2  s  .c  om
    walk.addTree(previousCommit.getTree());
    walk.addTree(headCommit.getTree());

    List<DiffEntry> entries = DiffEntry.scan(walk);
    if (entries.size() < 2)
        return path;

    for (DiffEntry diff : entries)
        if (diff.getChangeType() == ChangeType.MODIFY && path.equals(diff.getNewPath()))
            return path;

    RenameDetector detector = new RenameDetector(repository);
    detector.addAll(entries);
    List<DiffEntry> renames = detector.compute(walk.getObjectReader(), NullProgressMonitor.INSTANCE);
    for (DiffEntry diff : renames)
        if (diff.getChangeType() == ChangeType.RENAME && path.equals(diff.getNewPath()))
            return diff.getOldPath();

    return path;
}

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From source file:svnserver.repository.git.GitRepository.java

License:GNU General Public License

@NotNull
private Map<String, String> collectRename(@NotNull GitFile oldTree, @NotNull GitFile newTree)
        throws IOException {
    if (!renameDetection) {
        return Collections.emptyMap();
    }/*from w ww .  ja  v  a 2 s .  co  m*/
    final GitObject<ObjectId> oldTreeId = oldTree.getObjectId();
    final GitObject<ObjectId> newTreeId = newTree.getObjectId();
    if (oldTreeId == null || newTreeId == null || !Objects.equals(oldTreeId.getRepo(), newTreeId.getRepo())) {
        return Collections.emptyMap();
    }
    final TreeWalk tw = new TreeWalk(repository);
    tw.setRecursive(true);
    tw.addTree(oldTree.getObjectId().getObject());
    tw.addTree(newTree.getObjectId().getObject());

    final RenameDetector rd = new RenameDetector(repository);
    rd.addAll(DiffEntry.scan(tw));

    final Map<String, String> result = new HashMap<>();
    for (DiffEntry diff : rd.compute(tw.getObjectReader(), null)) {
        if (diff.getScore() >= rd.getRenameScore()) {
            result.put(StringHelper.normalize(diff.getNewPath()), StringHelper.normalize(diff.getOldPath()));
        }
    }
    return result;
}

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