Example usage for org.eclipse.jgit.treewalk.filter PathFilter create

Introduction

In this page you can find the example usage for org.eclipse.jgit.treewalk.filter PathFilter create.

Prototype

public static PathFilter create(String path) 

Source Link

Document

Create a new tree filter for a user supplied path.

Usage

From source file:ShowFileDiff.java

License:Apache License

public static void main(String[] args) throws IOException, GitAPIException {
    Repository repository = null; //CookbookHelper.openJGitCookbookRepository();

    // the diff works on TreeIterators, we prepare two for the two branches
    AbstractTreeIterator oldTreeParser = prepareTreeParser(repository,
            "09c65401f3730eb3e619c33bf31e2376fb393727");
    AbstractTreeIterator newTreeParser = prepareTreeParser(repository,
            "aa31703b65774e4a06010824601e56375a70078c");

    // then the procelain diff-command returns a list of diff entries
    List<DiffEntry> diff = new Git(repository).diff().setOldTree(oldTreeParser).setNewTree(newTreeParser)
            .setPathFilter(PathFilter.create("README.md")).call();
    for (DiffEntry entry : diff) {
        System.out.println("Entry: " + entry + ", from: " + entry.getOldId() + ", to: " + entry.getNewId());
        DiffFormatter formatter = new DiffFormatter(System.out);
        formatter.setRepository(repository);
        formatter.format(entry);//  www. ja  v  a  2s  .c om
    }

    repository.close();
}

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From source file:MyDiffFormatter.java

License:Eclipse Distribution License

/**
* Determine the differences between two trees.
*
* No output is created, instead only the file paths that are different are
* returned. Callers may choose to format these paths themselves, or convert
* them into {@link FileHeader} instances with a complete edit list by
*
* @param a/*w w w. java2  s.co m*/
*            the old (or previous) side.
* @param b
*            the new (or updated) side.
* @return the paths that are different.
* @throws IOException
*             trees cannot be read or file contents cannot be read.
*/
public List<DiffEntry> scan(AbstractTreeIterator a, AbstractTreeIterator b) throws IOException {
    assertHaveRepository();

    TreeWalk walk = new TreeWalk(reader);
    walk.addTree(a);
    walk.addTree(b);
    walk.setRecursive(true);

    TreeFilter filter = getDiffTreeFilterFor(a, b);
    if (pathFilter instanceof FollowFilter) {
        walk.setFilter(AndTreeFilter.create(PathFilter.create(((FollowFilter) pathFilter).getPath()), filter));
    } else {
        walk.setFilter(AndTreeFilter.create(pathFilter, filter));
    }

    source = new ContentSource.Pair(source(a), source(b));

    List<DiffEntry> files = DiffEntry.scan(walk);
    if (pathFilter instanceof FollowFilter && isAdd(files)) {
        // The file we are following was added here, find where it
        // came from so we can properly show the rename or copy,
        // then continue digging backwards.
        //
        a.reset();
        b.reset();
        walk.reset();
        walk.addTree(a);
        walk.addTree(b);
        walk.setFilter(filter);

        if (renameDetector == null)
            setDetectRenames(true);
        files = updateFollowFilter(detectRenames(DiffEntry.scan(walk)));

    } else if (renameDetector != null)
        files = detectRenames(files);

    return files;
}

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From source file:ch.sourcepond.maven.release.scm.git.GitRepository.java

License:Apache License

private void filterOutOtherModulesChanges(final String modulePath, final List<String> childModules,
        final RevWalk walk) {
    final boolean isRootModule = ".".equals(modulePath);
    final boolean isMultiModuleProject = !isRootModule || !childModules.isEmpty();
    final List<TreeFilter> treeFilters = new LinkedList<>();
    treeFilters.add(TreeFilter.ANY_DIFF);
    if (isMultiModuleProject) {
        if (!isRootModule) {
            // for sub-modules, look for changes only in the sub-module
            // path...
            treeFilters.add(PathFilter.create(modulePath));
        }/*from  ww w . j av a  2s  . c  om*/

        // ... but ignore any sub-modules of the current sub-module, because
        // they can change independently of the current module
        for (final String childModule : childModules) {
            final String path = isRootModule ? childModule : modulePath + "/" + childModule;
            treeFilters.add(PathFilter.create(path).negate());
        }

    }
    final TreeFilter treeFilter = treeFilters.size() == 1 ? treeFilters.get(0)
            : AndTreeFilter.create(treeFilters);
    walk.setTreeFilter(treeFilter);
}

---

From source file:co.bledo.gitmin.servlet.Review.java

License:Apache License

private String getFileContent(Repository repo, RevCommit commit, String path)
        throws MissingObjectException, IncorrectObjectTypeException, CorruptObjectException, IOException {
    // and using commit's tree find the path
    RevTree tree = commit.getTree();/*w  ww  . ja  va2 s.  c o  m*/
    TreeWalk treeWalk = new TreeWalk(repo);
    treeWalk.addTree(tree);
    treeWalk.setRecursive(true);
    treeWalk.setFilter(PathFilter.create(path));
    if (!treeWalk.next()) {
        return "";
    }
    ObjectId objectId = treeWalk.getObjectId(0);
    ObjectLoader loader = repo.open(objectId);

    // and then one can use either
    //InputStream in = loader.openStream();
    ByteArrayOutputStream out = new ByteArrayOutputStream();
    loader.copyTo(out);
    return out.toString();
}

---

From source file:com.addthis.hydra.job.store.JobStoreGit.java

License:Apache License

/**
 * Get the diff of a file against a particular commit
 *
 * @param jobId    The job config to diff
 * @param commitId If specified, the commit to compare against; otherwise, compare against the latest revision
 * @return A string description of the diff, comparable to the output of "git diff filename"
 * @throws GitAPIException If there is a problem fetching the diff from git
 * @throws IOException     If there is a problem reading from the file
 *//*from ww  w  . j a  v  a  2s .c o m*/
public String getDiff(String jobId, String commitId) throws GitAPIException, IOException {
    OutputStream out = new ByteArrayOutputStream();
    DiffCommand diff = git.diff().setPathFilter(PathFilter.create(getPathForJobId(jobId))).setOutputStream(out)
            .setSourcePrefix("old:").setDestinationPrefix("new:");
    if (commitId != null) {
        diff.setOldTree(getTreeIterator(commitId));
        diff.setNewTree(getTreeIterator("HEAD"));
    }
    diff.call();
    return out.toString();
}

---

From source file:com.buildautomation.jgit.api.GetFileAttributes.java

License:Apache License

private static void printFile(Repository repository, RevTree tree) throws IOException {
    // now try to find a specific file
    try (TreeWalk treeWalk = new TreeWalk(repository)) {
        treeWalk.addTree(tree);//from  ww  w .ja  v a2  s. com
        treeWalk.setRecursive(false);
        treeWalk.setFilter(PathFilter.create("README.md"));
        if (!treeWalk.next()) {
            throw new IllegalStateException("Did not find expected file 'README.md'");
        }

        // FileMode specifies the type of file, FileMode.REGULAR_FILE for normal file, FileMode.EXECUTABLE_FILE for executable bit
        // set
        FileMode fileMode = treeWalk.getFileMode(0);
        ObjectLoader loader = repository.open(treeWalk.getObjectId(0));
        System.out.println("README.md: " + getFileMode(fileMode) + ", type: " + fileMode.getObjectType()
                + ", mode: " + fileMode + " size: " + loader.getSize());
    }
}

---

From source file:com.buildautomation.jgit.api.GetFileAttributes.java

License:Apache License

private static void printDirectory(Repository repository, RevTree tree) throws IOException {
    // look at directory, this has FileMode.TREE
    try (TreeWalk treeWalk = new TreeWalk(repository)) {
        treeWalk.addTree(tree);/*from w  ww.  j a v  a 2 s. c o m*/
        treeWalk.setRecursive(false);
        treeWalk.setFilter(PathFilter.create("src"));
        if (!treeWalk.next()) {
            throw new IllegalStateException("Did not find expected file 'README.md'");
        }

        // FileMode now indicates that this is a directory, i.e. FileMode.TREE.equals(fileMode) holds true
        FileMode fileMode = treeWalk.getFileMode(0);
        System.out.println("src: " + getFileMode(fileMode) + ", type: " + fileMode.getObjectType() + ", mode: "
                + fileMode);
    }
}

---

From source file:com.buildautomation.jgit.api.ReadFileFromCommit.java

License:Apache License

public static void readFileFromCommit() throws IOException {
    try (Repository repository = CookbookHelper.openJGitCookbookRepository()) {
        // find the HEAD
        ObjectId lastCommitId = repository.resolve(Constants.HEAD);

        // a RevWalk allows to walk over commits based on some filtering that is defined
        try (RevWalk revWalk = new RevWalk(repository)) {
            RevCommit commit = revWalk.parseCommit(lastCommitId);
            // and using commit's tree find the path
            RevTree tree = commit.getTree();
            System.out.println("Having tree: " + tree);

            // now try to find a specific file
            try (TreeWalk treeWalk = new TreeWalk(repository)) {
                treeWalk.addTree(tree);/*  www  .ja v a 2  s. co  m*/
                treeWalk.setRecursive(true);
                treeWalk.setFilter(PathFilter.create("README.md"));
                if (!treeWalk.next()) {
                    throw new IllegalStateException("Did not find expected file 'README.md'");
                }

                ObjectId objectId = treeWalk.getObjectId(0);
                ObjectLoader loader = repository.open(objectId);

                // and then one can the loader to read the file
                loader.copyTo(System.out);
            }

            revWalk.dispose();
        }
    }
}

---

From source file:com.buildautomation.jgit.api.ShowBlame.java

License:Apache License

private static int countFiles(Repository repository, ObjectId commitID, String name) throws IOException {
    try (RevWalk revWalk = new RevWalk(repository)) {
        RevCommit commit = revWalk.parseCommit(commitID);
        RevTree tree = commit.getTree();
        System.out.println("Having tree: " + tree);

        // now try to find a specific file
        try (TreeWalk treeWalk = new TreeWalk(repository)) {
            treeWalk.addTree(tree);//  w ww .  j a  va2s.  com
            treeWalk.setRecursive(true);
            treeWalk.setFilter(PathFilter.create(name));
            if (!treeWalk.next()) {
                throw new IllegalStateException("Did not find expected file 'README.md'");
            }

            ObjectId objectId = treeWalk.getObjectId(0);
            ObjectLoader loader = repository.open(objectId);

            ByteArrayOutputStream stream = new ByteArrayOutputStream();
            // and then one can the loader to read the file
            loader.copyTo(stream);

            revWalk.dispose();

            return IOUtils.readLines(new ByteArrayInputStream(stream.toByteArray())).size();
        }
    }
}

---

From source file:com.buildautomation.jgit.api.ShowFileDiff.java

License:Apache License

public static void showFileDiff() throws IOException, GitAPIException {
    try (Repository repository = CookbookHelper.openJGitCookbookRepository()) {
        // the diff works on TreeIterators, we prepare two for the two branches
        AbstractTreeIterator oldTreeParser = prepareTreeParser(repository,
                "09c65401f3730eb3e619c33bf31e2376fb393727");
        AbstractTreeIterator newTreeParser = prepareTreeParser(repository,
                "aa31703b65774e4a06010824601e56375a70078c");

        // then the procelain diff-command returns a list of diff entries
        try (Git git = new Git(repository)) {
            List<DiffEntry> diff = git.diff().setOldTree(oldTreeParser).setNewTree(newTreeParser)
                    .setPathFilter(PathFilter.create("README.md")).call();
            for (DiffEntry entry : diff) {
                System.out.println(
                        "Entry: " + entry + ", from: " + entry.getOldId() + ", to: " + entry.getNewId());
                try (DiffFormatter formatter = new DiffFormatter(System.out)) {
                    formatter.setRepository(repository);
                    formatter.format(entry);
                }/*from  www  . j av  a 2s .c om*/
            }
        }
    }
}

---

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