Examples with ObjectReader org.eclipse.jgit.lib.ObjectReader used on opensource projects

Example 41 with ObjectReader

use of org.eclipse.jgit.lib.ObjectReader in project searchcode-server by boyter.

the class GitService method fetchFileRevision.

/**
     * Given a repository location, revision and file path will retrieve that files contents. N.B. it returns the whole
     * file so you MAY end up running into serious memory issues, and should be aware of this
     */
public String fetchFileRevision(String repoLocation, String revision, String filePath) throws MissingObjectException, IncorrectObjectTypeException, IOException {
    Repository localRepository = new FileRepository(new File(repoLocation));
    ObjectId id = localRepository.resolve(revision);
    ObjectReader reader = localRepository.newObjectReader();
    try {
        RevWalk walk = new RevWalk(reader);
        RevCommit commit = walk.parseCommit(id);
        RevTree tree = commit.getTree();
        TreeWalk treewalk = TreeWalk.forPath(reader, filePath, tree);
        if (treewalk != null) {
            byte[] data = reader.open(treewalk.getObjectId(0)).getBytes();
            return new String(data, "utf-8");
        } else {
            return "";
        }
    } finally {
        reader.close();
    }
}