Mercurial > hg
view mercurial/filelog.py @ 37449:a0d71618074f
revlog: detect pseudo file nodeids to raise WdirUnsupported exception
Again, I'm not sure if this is the right thing, but adding a few more pseudo
hashes wouldn't be any worse than the current state.
Differential Revision: https://phab.mercurial-scm.org/D2942
author | Yuya Nishihara <yuya@tcha.org> |
---|---|
date | Sun, 25 Mar 2018 18:34:07 +0900 |
parents | 65250a66b55c |
children | 1541e1a8e87d |
line wrap: on
line source
# 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. from __future__ import absolute_import from .thirdparty.zope import ( interface as zi, ) from . import ( repository, revlog, ) @zi.implementer(repository.ifilestorage) class filelog(revlog.revlog): def __init__(self, opener, path): super(filelog, self).__init__(opener, "/".join(("data", path + ".i")), censorable=True) # full name of the user visible file, relative to the repository root self.filename = path 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'): text = revlog.packmeta(meta, 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 = revlog.parsemeta(t)[0] 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)) if self.iscensored(rev): return 0 # XXX if self.read(node).startswith("\1\n"), this returns (size+4) return super(filelog, self).size(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 super(filelog, self).cmp(node, t) if samehashes: return False # censored files compare against the empty file if self.iscensored(self.rev(node)): return text != '' # 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