private boolean processOne(Candidate n) throws IOException {
RevCommit parent = n.getParent(0);
if (parent == null) return split(n.getNextCandidate(0), n);
revPool.parseHeaders(parent);
if (find(parent, n.sourcePath)) {
if (idBuf.equals(n.sourceBlob)) return blameEntireRegionOnParent(n, parent);
return splitBlameWithParent(n, parent);
}
if (n.sourceCommit == null) return result(n);
DiffEntry r = findRename(parent, n.sourceCommit, n.sourcePath);
if (r == null) return result(n);
if (0 == r.getOldId().prefixCompare(n.sourceBlob)) {
// A 100% rename without any content change can also
// skip directly to the parent.
n.sourceCommit = parent;
n.sourcePath = PathFilter.create(r.getOldPath());
push(n);
return false;
}
Candidate next = n.create(parent, PathFilter.create(r.getOldPath()));
next.sourceBlob = r.getOldId().toObjectId();
next.renameScore = r.getScore();
next.loadText(reader);
return split(next, n);
}
private boolean blameEntireRegionOnParent(Candidate n, RevCommit parent) {
// File was not modified, blame parent.
n.sourceCommit = parent;
push(n);
return false;
}