public boolean diff(final ProgressMonitor monitor, int estWorkTreeSize,
int estIndexSize, final String title)
throws IOException {
dirCache = repository.readDirCache();
TreeWalk treeWalk = new TreeWalk(repository);
treeWalk.setRecursive(true);
// add the trees (tree, dirchache, workdir)
if (tree != null)
treeWalk.addTree(tree);
else
treeWalk.addTree(new EmptyTreeIterator());
treeWalk.addTree(new DirCacheIterator(dirCache));
treeWalk.addTree(initialWorkingTreeIterator);
Collection<TreeFilter> filters = new ArrayList<TreeFilter>(4);
if (monitor != null) {
// Get the maximum size of the work tree and index
// and add some (quite arbitrary)
if (estIndexSize == 0)
estIndexSize = dirCache.getEntryCount();
int total = Math.max(estIndexSize * 10 / 9,
estWorkTreeSize * 10 / 9);
monitor.beginTask(title, total);
filters.add(new ProgressReportingFilter(monitor, total));
}
if (filter != null)
filters.add(filter);
filters.add(new SkipWorkTreeFilter(INDEX));
filters.add(new IndexDiffFilter(INDEX, WORKDIR));
treeWalk.setFilter(AndTreeFilter.create(filters));
while (treeWalk.next()) {
AbstractTreeIterator treeIterator = treeWalk.getTree(TREE,
AbstractTreeIterator.class);
DirCacheIterator dirCacheIterator = treeWalk.getTree(INDEX,
DirCacheIterator.class);
WorkingTreeIterator workingTreeIterator = treeWalk.getTree(WORKDIR,
WorkingTreeIterator.class);
if (dirCacheIterator != null) {
final DirCacheEntry dirCacheEntry = dirCacheIterator
.getDirCacheEntry();
if (dirCacheEntry != null && dirCacheEntry.getStage() > 0) {
conflicts.add(treeWalk.getPathString());
continue;
}
}
if (treeIterator != null) {
if (dirCacheIterator != null) {
if (!treeIterator.idEqual(dirCacheIterator)
|| treeIterator.getEntryRawMode()
!= dirCacheIterator.getEntryRawMode()) {
// in repo, in index, content diff => changed
changed.add(treeWalk.getPathString());
}
} else {
// in repo, not in index => removed
removed.add(treeWalk.getPathString());
if (workingTreeIterator != null)
untracked.add(treeWalk.getPathString());
}
} else {
if (dirCacheIterator != null) {
// not in repo, in index => added
added.add(treeWalk.getPathString());
} else {
// not in repo, not in index => untracked
if (workingTreeIterator != null
&& !workingTreeIterator.isEntryIgnored()) {
untracked.add(treeWalk.getPathString());
}
}
}
if (dirCacheIterator != null) {
if (workingTreeIterator == null) {
// in index, not in workdir => missing
missing.add(treeWalk.getPathString());
} else {
if (workingTreeIterator.isModified(
dirCacheIterator.getDirCacheEntry(), true)) {
// in index, in workdir, content differs => modified
modified.add(treeWalk.getPathString());
}
}
}
}