Mercurial > hg
view contrib/casesmash.py @ 32750:b698921ee137
dirstate: add identity information to detect simultaneous changing in storage
This identity is used to examine whether dirstate is simultaneously
changed in storage after previous caching (see issue5584 for detail).
util.cachestat can't be used for this purpose, because it has no
valuable information on Windows.
On the other hand, util.filestat can detect changing dirstate in
storage certainly, regardless of platforms.
https://www.mercurial-scm.org/wiki/ExactCacheValidationPlan
Strictly speaking, if underlying filesystem doesn't support
ctime/mtime, util.filestat can't detect simultaneous changing in
storage as expected. But simultaneous changing on such (very rare)
platform can't be detected regardless of this patch series.
Therefore, util.filestat should be reasonable identity for almost all
usecases.
author | FUJIWARA Katsunori <foozy@lares.dti.ne.jp> |
---|---|
date | Fri, 09 Jun 2017 13:07:48 +0900 |
parents | 42a7301fb4d5 |
children | 2372284d9457 |
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from __future__ import absolute_import import __builtin__ import os from mercurial import ( util, ) def lowerwrap(scope, funcname): f = getattr(scope, funcname) def wrap(fname, *args, **kwargs): d, base = os.path.split(fname) try: files = os.listdir(d or '.') except OSError: files = [] if base in files: return f(fname, *args, **kwargs) for fn in files: if fn.lower() == base.lower(): return f(os.path.join(d, fn), *args, **kwargs) return f(fname, *args, **kwargs) scope.__dict__[funcname] = wrap def normcase(path): return path.lower() os.path.normcase = normcase for f in 'file open'.split(): lowerwrap(__builtin__, f) for f in "chmod chown open lstat stat remove unlink".split(): lowerwrap(os, f) for f in "exists lexists".split(): lowerwrap(os.path, f) lowerwrap(util, 'posixfile')