Mercurial > hg
diff mercurial/filelog.py @ 2887:05257fd28591
filelog: add hash-based comparisons
For status, rather than reconstruct full file versions from revlog for
comparison, compare hashes.
author | Matt Mackall <mpm@selenic.com> |
---|---|
date | Mon, 14 Aug 2006 15:07:00 -0500 |
parents | 345bac2bc4ec |
children | 5df3e5cf16bc |
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--- a/mercurial/filelog.py Mon Aug 14 14:42:15 2006 -0500 +++ b/mercurial/filelog.py Mon Aug 14 15:07:00 2006 -0500 @@ -65,6 +65,27 @@ return (m["copy"], bin(m["copyrev"])) return False + def cmp(self, node, text): + """compare text with a given file revision""" + + # for renames, we have to go the slow way + if self.renamed(node): + t2 = self.read(node) + return t2 == text + + p1, p2 = self.parents(node) + h = hash(text, p1, p2) + + return h != node + + def makenode(self, node, text): + """calculate a file nodeid for text, descended or possibly + unchanged from node""" + + if self.cmp(node, text): + return hash(text, node, nullid) + return node + def annotate(self, node): def decorate(text, rev):