RevCommit headCommit,
RevCommit ancestorCommit, List<String> filterPaths, RevWalk rw,
IProgressMonitor monitor) throws IOException, InterruptedException {
monitor.setTaskName(UIText.GitMergeEditorInput_CalculatingDiffTaskName);
IDiffContainer result = new DiffNode(Differencer.CONFLICTING);
TreeWalk tw = new TreeWalk(repository);
try {
int dirCacheIndex = tw.addTree(new DirCacheIterator(repository
.readDirCache()));
int fileTreeIndex = tw.addTree(new FileTreeIterator(repository));
int repositoryTreeIndex = tw.addTree(rw.parseTree(repository
.resolve(Constants.HEAD)));
// skip ignored resources
NotIgnoredFilter notIgnoredFilter = new NotIgnoredFilter(
fileTreeIndex);
// filter by selected resources
if (filterPaths.size() > 1) {
List<TreeFilter> suffixFilters = new ArrayList<TreeFilter>();
for (String filterPath : filterPaths)
suffixFilters.add(PathFilter.create(filterPath));
TreeFilter otf = OrTreeFilter.create(suffixFilters);
tw.setFilter(AndTreeFilter.create(otf, notIgnoredFilter));
} else if (filterPaths.size() > 0) {
String path = filterPaths.get(0);
if (path.length() == 0)
tw.setFilter(notIgnoredFilter);
else
tw.setFilter(AndTreeFilter.create(PathFilter.create(path),
notIgnoredFilter));
} else
tw.setFilter(notIgnoredFilter);
tw.setRecursive(true);
while (tw.next()) {
if (monitor.isCanceled())
throw new InterruptedException();
String gitPath = tw.getPathString();
monitor.setTaskName(gitPath);
FileTreeIterator fit = tw.getTree(fileTreeIndex,
FileTreeIterator.class);
if (fit == null)
continue;
DirCacheIterator dit = tw.getTree(dirCacheIndex,
DirCacheIterator.class);
final DirCacheEntry dirCacheEntry = dit == null ? null : dit
.getDirCacheEntry();
boolean conflicting = dirCacheEntry != null
&& dirCacheEntry.getStage() > 0;
AbstractTreeIterator rt = tw.getTree(repositoryTreeIndex,
AbstractTreeIterator.class);
// compare local file against HEAD to see if it was modified
boolean modified = rt != null
&& !fit.getEntryObjectId()
.equals(rt.getEntryObjectId());
// if this is neither conflicting nor changed, we skip it
if (!conflicting && !modified)
continue;
ITypedElement right;
if (conflicting) {
GitFileRevision revision = GitFileRevision.inIndex(
repository, gitPath, DirCacheEntry.STAGE_3);
String encoding = CompareCoreUtils.getResourceEncoding(
repository, gitPath);
right = new FileRevisionTypedElement(revision, encoding);
} else
right = CompareUtils.getFileRevisionTypedElement(gitPath,
headCommit, repository);
// can this really happen?
if (right instanceof EmptyTypedElement)
continue;
IFileRevision rev;
// if the file is not conflicting (as it was auto-merged)
// we will show the auto-merged (local) version
Path repositoryPath = new Path(repository.getWorkTree()
.getAbsolutePath());
IPath location = repositoryPath
.append(fit.getEntryPathString());
IFile file = ResourceUtil.getFileForLocation(location);
if (!conflicting || useWorkspace) {
if (file != null)
rev = new LocalFileRevision(file);
else
rev = new WorkingTreeFileRevision(location.toFile());
} else {
rev = GitFileRevision.inIndex(repository, gitPath,
DirCacheEntry.STAGE_2);
}
IRunnableContext runnableContext = getContainer();
if (runnableContext == null)
runnableContext = PlatformUI.getWorkbench().getProgressService();
EditableRevision leftEditable;
if (file != null)
leftEditable = new ResourceEditableRevision(rev, file,
runnableContext);
else
leftEditable = new LocationEditableRevision(rev, location,
runnableContext);
// make sure we don't need a round trip later
try {
leftEditable.cacheContents(monitor);
} catch (CoreException e) {
throw new IOException(e.getMessage());
}
int kind = Differencer.NO_CHANGE;
if (conflicting)
kind = Differencer.CONFLICTING;
else if (modified)
kind = Differencer.PSEUDO_CONFLICT;
IDiffContainer fileParent = getFileParent(result,
repositoryPath, file, location);
ITypedElement anc;
if (ancestorCommit != null)
anc = CompareUtils.getFileRevisionTypedElement(gitPath,
ancestorCommit, repository);
else
anc = null;
// we get an ugly black icon if we have an EmptyTypedElement
// instead of null
if (anc instanceof EmptyTypedElement)
anc = null;
// create the node as child
new DiffNode(fileParent, kind, anc, leftEditable, right);
}
return result;
} finally {
tw.release();
}