private static TreeFilter getDiffTreeFilterFor(AbstractTreeIterator a, AbstractTreeIterator b) {
if (a instanceof DirCacheIterator && b instanceof WorkingTreeIterator)
return new IndexDiffFilter(0, 1);
if (a instanceof WorkingTreeIterator && b instanceof DirCacheIterator)
return new IndexDiffFilter(1, 0);
TreeFilter filter = TreeFilter.ANY_DIFF;
if (a instanceof WorkingTreeIterator)
filter = AndTreeFilter.create(new NotIgnoredFilter(0), filter);
if (b instanceof WorkingTreeIterator)
filter = AndTreeFilter.create(new NotIgnoredFilter(1), filter);
return filter;
}
protected boolean hasIgnoreFile(Repository repository, RevCommit revCommit, String relativePath)
throws Exception {
if (_ignoreFileName == null) {
return false;
}
try (TreeWalk treeWalk = new TreeWalk(repository)) {
treeWalk.addTree(revCommit.getTree());
if (revCommit.getParentCount() > 0) {
RevCommit parentRevCommit = revCommit.getParent(0);
treeWalk.addTree(parentRevCommit.getTree());
}
treeWalk.setRecursive(true);
treeWalk.setFilter(
AndTreeFilter.create(
PathFilter.create(relativePath + "/" + _ignoreFileName), TreeFilter.ANY_DIFF));
return treeWalk.next();
}
}
/**
* Parses an array of Git commits and returns an array of commits that affected the specified
* object.
*
* @param repository the Git repository
* @param commitIds the Git commit IDs to parse
* @param path the object affected
* @return an array of {@link GitCommit} objects representing the commits
*/
public NSArray<GitCommit> commitsWithIds(NSArray<ObjectId> commitIds, String path) {
try {
RevWalk rw = new RevWalk(repository);
try {
rw.sort(RevSort.COMMIT_TIME_DESC);
if (path != null) {
rw.setTreeFilter(
AndTreeFilter.create(PathSuffixFilter.create(path), TreeFilter.ANY_DIFF));
} else {
rw.setTreeFilter(TreeFilter.ALL);
}
for (ObjectId commitId : commitIds) {
rw.markStart(rw.parseCommit(commitId));
}
NSMutableArray<GitCommit> commits = new NSMutableArray<GitCommit>();
for (RevCommit commit : rw) {
commits.add(new GitCommit(commit));
}
return commits;
} finally {
rw.release();
}
} catch (Exception e) {
log.error("An exception occurred while parsing the commit: ", e);
return null;
}
}
/**
* Returns a list of commits for the repository or a path within the repository. Caller may
* specify ending revision with objectId. Caller may specify offset and maxCount to achieve
* pagination of results. If the repository does not exist or is empty, an empty list is returned.
*
* @param repository
* @param objectId if unspecified, HEAD is assumed.
* @param path if unspecified, commits for repository are returned. If specified, commits for the
* path are returned.
* @param offset
* @param maxCount if < 0, all commits are returned.
* @return a paged list of commits
*/
public static List<RevCommit> getRevLog(
Repository repository, String objectId, String path, int offset, int maxCount) {
List<RevCommit> list = new ArrayList<RevCommit>();
if (maxCount == 0) {
return list;
}
if (!hasCommits(repository)) {
return list;
}
try {
// resolve branch
ObjectId branchObject;
if (objectId == null) {
branchObject = getDefaultBranch(repository);
} else {
branchObject = repository.resolve(objectId);
}
RevWalk rw = new RevWalk(repository);
rw.markStart(rw.parseCommit(branchObject));
if (!(path == null)) {
TreeFilter filter =
AndTreeFilter.create(
PathFilterGroup.createFromStrings(Collections.singleton(path)),
TreeFilter.ALL); // TreeFilter.ANY_DIFF
rw.setTreeFilter(filter);
}
Iterable<RevCommit> revlog = rw;
if (offset > 0) {
int count = 0;
for (RevCommit rev : revlog) {
count++;
if (count > offset) {
list.add(rev);
if (maxCount > 0 && list.size() == maxCount) {
break;
}
}
}
} else {
for (RevCommit rev : revlog) {
list.add(rev);
if (maxCount > 0 && list.size() == maxCount) {
break;
}
}
}
rw.dispose();
} catch (Throwable t) {
// todo
Logger.error(t, t.getMessage());
}
return list;
}
/**
* Compute the current projects that will be missing after the given branch is checked out
*
* @param branch
* @param currentProjects
* @return non-null but possibly empty array of missing projects
*/
private IProject[] getMissingProjects(String branch, IProject[] currentProjects) {
if (delete || currentProjects.length == 0) return new IProject[0];
ObjectId targetTreeId;
ObjectId currentTreeId;
try {
targetTreeId = repository.resolve(branch + "^{tree}"); // $NON-NLS-1$
currentTreeId = repository.resolve(Constants.HEAD + "^{tree}"); // $NON-NLS-1$
} catch (IOException e) {
return new IProject[0];
}
if (targetTreeId == null || currentTreeId == null) return new IProject[0];
Map<File, IProject> locations = new HashMap<File, IProject>();
for (IProject project : currentProjects) {
IPath location = project.getLocation();
if (location == null) continue;
location = location.append(IProjectDescription.DESCRIPTION_FILE_NAME);
locations.put(location.toFile(), project);
}
List<IProject> toBeClosed = new ArrayList<IProject>();
File root = repository.getWorkTree();
TreeWalk walk = new TreeWalk(repository);
try {
walk.addTree(targetTreeId);
walk.addTree(currentTreeId);
walk.addTree(new FileTreeIterator(repository));
walk.setRecursive(true);
walk.setFilter(
AndTreeFilter.create(
PathSuffixFilter.create(IProjectDescription.DESCRIPTION_FILE_NAME),
TreeFilter.ANY_DIFF));
while (walk.next()) {
AbstractTreeIterator targetIter = walk.getTree(0, AbstractTreeIterator.class);
if (targetIter != null) continue;
AbstractTreeIterator currentIter = walk.getTree(1, AbstractTreeIterator.class);
AbstractTreeIterator workingIter = walk.getTree(2, AbstractTreeIterator.class);
if (currentIter == null || workingIter == null) continue;
IProject project = locations.get(new File(root, walk.getPathString()));
if (project != null) toBeClosed.add(project);
}
} catch (IOException e) {
return new IProject[0];
} finally {
walk.release();
}
return toBeClosed.toArray(new IProject[toBeClosed.size()]);
}
/**
* Determine the differences between two trees.
*
* <p>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 calling {@link #toFileHeader(DiffEntry)}.
*
* @param a 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;
}
private KidWalk buildWalk() {
final RepositoryMapping rm = RepositoryMapping.getMapping(resource);
if (rm == null) {
Activator.logError(
NLS.bind(CoreText.GitFileHistory_gitNotAttached, resource.getProject().getName()), null);
return null;
}
final KidWalk w = new KidWalk(rm.getRepository());
gitPath = rm.getRepoRelativePath(resource);
w.setTreeFilter(
AndTreeFilter.create(
PathFilterGroup.createFromStrings(Collections.singleton(gitPath)),
TreeFilter.ANY_DIFF));
return w;
}
private boolean handleGetCommitBody(
HttpServletRequest request,
HttpServletResponse response,
Repository db,
String ref,
String pattern)
throws IOException, ServletException, CoreException {
ObjectId refId = db.resolve(ref);
if (refId == null) {
String msg = NLS.bind("Failed to get commit body for ref {0}", ref);
return statusHandler.handleRequest(
request,
response,
new ServerStatus(IStatus.ERROR, HttpServletResponse.SC_BAD_REQUEST, msg, null));
}
RevWalk walk = new RevWalk(db);
walk.setTreeFilter(
AndTreeFilter.create(
PathFilterGroup.createFromStrings(Collections.singleton(pattern)),
TreeFilter.ANY_DIFF));
RevCommit revCommit = walk.parseCommit(refId);
walk.dispose();
Commit commit = new Commit(null /* not needed */, db, revCommit, pattern);
ObjectStream stream = commit.toObjectStream();
if (stream == null) {
String msg = NLS.bind("Commit body for ref {0} not found", ref);
return statusHandler.handleRequest(
request,
response,
new ServerStatus(IStatus.ERROR, HttpServletResponse.SC_NOT_FOUND, msg, null));
}
IOUtilities.pipe(stream, response.getOutputStream(), true, false);
return true;
}
private boolean handleGetDiff(
HttpServletRequest request,
HttpServletResponse response,
Repository db,
String scope,
String pattern,
OutputStream out)
throws Exception {
Git git = new Git(db);
DiffCommand diff = git.diff();
diff.setOutputStream(new BufferedOutputStream(out));
AbstractTreeIterator oldTree;
AbstractTreeIterator newTree = new FileTreeIterator(db);
if (scope.contains("..")) { // $NON-NLS-1$
String[] commits = scope.split("\\.\\."); // $NON-NLS-1$
if (commits.length != 2) {
String msg = NLS.bind("Failed to generate diff for {0}", scope);
return statusHandler.handleRequest(
request,
response,
new ServerStatus(IStatus.ERROR, HttpServletResponse.SC_BAD_REQUEST, msg, null));
}
oldTree = getTreeIterator(db, commits[0]);
newTree = getTreeIterator(db, commits[1]);
} else if (scope.equals(GitConstants.KEY_DIFF_CACHED)) {
ObjectId head = db.resolve(Constants.HEAD + "^{tree}"); // $NON-NLS-1$
if (head == null) {
String msg = NLS.bind("Failed to generate diff for {0}, no HEAD", scope);
return statusHandler.handleRequest(
request,
response,
new ServerStatus(IStatus.ERROR, HttpServletResponse.SC_BAD_REQUEST, msg, null));
}
CanonicalTreeParser p = new CanonicalTreeParser();
ObjectReader reader = db.newObjectReader();
try {
p.reset(reader, head);
} finally {
reader.release();
}
oldTree = p;
newTree = new DirCacheIterator(db.readDirCache());
} else if (scope.equals(GitConstants.KEY_DIFF_DEFAULT)) {
oldTree = new DirCacheIterator(db.readDirCache());
} else {
oldTree = getTreeIterator(db, scope);
}
String[] paths = request.getParameterValues(ProtocolConstants.KEY_PATH);
TreeFilter filter = null;
TreeFilter pathFilter = null;
if (paths != null) {
if (paths.length > 1) {
Set<TreeFilter> pathFilters = new HashSet<TreeFilter>(paths.length);
for (String path : paths) {
pathFilters.add(PathFilter.create(path));
}
pathFilter = OrTreeFilter.create(pathFilters);
} else if (paths.length == 1) {
pathFilter = PathFilter.create(paths[0]);
}
}
if (pattern != null) {
PathFilter patternFilter = PathFilter.create(pattern);
if (pathFilter != null) filter = AndTreeFilter.create(patternFilter, pathFilter);
else filter = patternFilter;
} else {
filter = pathFilter;
}
if (filter != null) diff.setPathFilter(filter);
diff.setOldTree(oldTree);
diff.setNewTree(newTree);
diff.call();
return true;
}
@Override
public void execute() throws BuildException {
if (_property == null) {
throw new BuildException("Property attribute is required", getLocation());
}
if (_path == null) {
throw new BuildException("Path attribute is required", getLocation());
}
File gitDir = PathUtil.getGitDir(_gitDir, getProject(), getLocation());
String relativePath = PathUtil.toRelativePath(gitDir, _path);
if (_useCache) {
String hash = _hashes.get(relativePath);
if (hash != null) {
Project currentProject = getProject();
currentProject.setNewProperty(_property, hash);
return;
}
}
try (Repository repository = RepositoryCache.open(FileKey.exact(gitDir, FS.DETECTED))) {
RevWalk revWalk = new RevWalk(repository);
revWalk.setRetainBody(false);
revWalk.markStart(revWalk.parseCommit(repository.resolve(Constants.HEAD)));
if (_ignoreFileName == null) {
revWalk.setRevFilter(MaxCountRevFilter.create(1));
} else {
revWalk.setRevFilter(MaxCountRevFilter.create(2));
}
revWalk.setTreeFilter(
AndTreeFilter.create(PathFilter.create(relativePath), TreeFilter.ANY_DIFF));
RevCommit revCommit = revWalk.next();
if (revCommit == null) {
throw new IllegalStateException("Unable to find any commit under " + _path);
}
if (hasIgnoreFile(repository, revCommit, relativePath)) {
RevCommit secondRevCommit = revWalk.next();
if (secondRevCommit != null) {
revCommit = secondRevCommit;
}
}
Project currentProject = getProject();
String hash = revCommit.name();
currentProject.setNewProperty(_property, hash);
if (_useCache) {
_hashes.put(relativePath, hash);
}
revWalk.dispose();
} catch (Exception e) {
throw new BuildException("Unable to get head hash for path " + _path, e);
}
}
