Mercurial > hg
view mercurial/filelog.py @ 13579:3cbb3c57a50e
transplant: added 'HGREVISION' variable to the environment passed to the 'filter' command
Sometimes it is necessary to know the original revision ID in order to
correctly rewrite the patch or commit message when transplanting. This
patch follows the pattern set by the existing 'HGUSER' environment variable,
and adds a test that covers both HGUSER and HGREVISION.
author | Luke Plant <L.Plant.98@cantab.net> |
---|---|
date | Fri, 11 Mar 2011 15:48:44 +0000 |
parents | e5060aa22043 |
children | e8271159c8c2 |
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# filelog.py - file history class for mercurial # # Copyright 2005-2007 Matt Mackall <mpm@selenic.com> # # This software may be used and distributed according to the terms of the # GNU General Public License version 2 or any later version. import revlog def _parsemeta(text): if not text.startswith('\1\n'): return {} s = text.index('\1\n', 2) mt = text[2:s] m = {} for l in mt.splitlines(): k, v = l.split(": ", 1) m[k] = v return m class filelog(revlog.revlog): def __init__(self, opener, path): revlog.revlog.__init__(self, opener, "/".join(("data", path + ".i"))) def read(self, node): t = self.revision(node) if not t.startswith('\1\n'): return t s = t.index('\1\n', 2) return t[s + 2:] def add(self, text, meta, transaction, link, p1=None, p2=None): if meta or text.startswith('\1\n'): mt = ["%s: %s\n" % (k, v) for k, v in sorted(meta.iteritems())] text = "\1\n%s\1\n%s" % ("".join(mt), text) return self.addrevision(text, transaction, link, p1, p2) def renamed(self, node): if self.parents(node)[0] != revlog.nullid: return False t = self.revision(node) m = _parsemeta(t) if m and "copy" in m: return (m["copy"], revlog.bin(m["copyrev"])) return False def size(self, rev): """return the size of a given revision""" # for revisions with renames, we have to go the slow way node = self.node(rev) if self.renamed(node): return len(self.read(node)) # XXX if self.read(node).startswith("\1\n"), this returns (size+4) return revlog.revlog.size(self, rev) def cmp(self, node, text): """compare text with a given file revision returns True if text is different than what is stored. """ t = text if text.startswith('\1\n'): t = '\1\n\1\n' + text samehashes = not revlog.revlog.cmp(self, node, t) if samehashes: return False # renaming a file produces a different hash, even if the data # remains unchanged. Check if it's the case (slow): if self.renamed(node): t2 = self.read(node) return t2 != text return True