Mercurial > hg
view hgext/win32mbcs.py @ 19778:55ef79031009
localrepo: make supported features manageable in each repositories individually
Before this patch, all localrepositories support same features,
because supported features are managed by the class variable
"supported" of "localrepository".
For example, "largefiles" feature provided by largefiles extension is
recognized as supported, by adding the feature name to "supported" of
"localrepository".
So, commands handling multiple repositories at a time like below
misunderstand that such features are supported also in repositories
not enabling corresponded extensions:
- clone/pull from or push to localhost
- recursive execution in subrepo tree
"reposetup()" can't be used to fix this problem, because it is invoked
after checking whether supported features satisfy ones required in the
target repository.
So, this patch adds the set object named as "featuresetupfuncs" to
"localrepository" to manage hook functions to setup supported features
of each repositories.
If any functions are added to "featuresetupfuncs", they are invoked,
and information about supported features is managed in each
repositories individually.
This patch also adds checking below:
- pull from localhost: whether features supported in the local(= dst)
repository satisfies ones required in the remote(= src)
- push to localhost: whether features supported in the remote(= dst)
repository satisfies ones required in the local(= src)
Managing supported features by the class variable means that there is
no difference of supported features between each instances of
"localrepository" in the same Python process, so such checking is not
needed before this patch.
Even with this patch, if intermediate bundlefile is used as pulling
source, pulling indirectly from the remote repository, which requires
features more than ones supported in the local, can't be prevented,
because bundlefile has no information about "required features" in it.
author | FUJIWARA Katsunori <foozy@lares.dti.ne.jp> |
---|---|
date | Sat, 21 Sep 2013 21:33:29 +0900 |
parents | 41c06a02814e |
children | 80c5b2666a96 |
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# win32mbcs.py -- MBCS filename support for Mercurial # # Copyright (c) 2008 Shun-ichi Goto <shunichi.goto@gmail.com> # # Version: 0.3 # Author: Shun-ichi Goto <shunichi.goto@gmail.com> # # This software may be used and distributed according to the terms of the # GNU General Public License version 2 or any later version. # '''allow the use of MBCS paths with problematic encodings Some MBCS encodings are not good for some path operations (i.e. splitting path, case conversion, etc.) with its encoded bytes. We call such a encoding (i.e. shift_jis and big5) as "problematic encoding". This extension can be used to fix the issue with those encodings by wrapping some functions to convert to Unicode string before path operation. This extension is useful for: - Japanese Windows users using shift_jis encoding. - Chinese Windows users using big5 encoding. - All users who use a repository with one of problematic encodings on case-insensitive file system. This extension is not needed for: - Any user who use only ASCII chars in path. - Any user who do not use any of problematic encodings. Note that there are some limitations on using this extension: - You should use single encoding in one repository. - If the repository path ends with 0x5c, .hg/hgrc cannot be read. - win32mbcs is not compatible with fixutf8 extension. By default, win32mbcs uses encoding.encoding decided by Mercurial. You can specify the encoding by config option:: [win32mbcs] encoding = sjis It is useful for the users who want to commit with UTF-8 log message. ''' import os, sys from mercurial.i18n import _ from mercurial import util, encoding testedwith = 'internal' _encoding = None # see extsetup def decode(arg): if isinstance(arg, str): uarg = arg.decode(_encoding) if arg == uarg.encode(_encoding): return uarg raise UnicodeError("Not local encoding") elif isinstance(arg, tuple): return tuple(map(decode, arg)) elif isinstance(arg, list): return map(decode, arg) elif isinstance(arg, dict): for k, v in arg.items(): arg[k] = decode(v) return arg def encode(arg): if isinstance(arg, unicode): return arg.encode(_encoding) elif isinstance(arg, tuple): return tuple(map(encode, arg)) elif isinstance(arg, list): return map(encode, arg) elif isinstance(arg, dict): for k, v in arg.items(): arg[k] = encode(v) return arg def appendsep(s): # ensure the path ends with os.sep, appending it if necessary. try: us = decode(s) except UnicodeError: us = s if us and us[-1] not in ':/\\': s += os.sep return s def basewrapper(func, argtype, enc, dec, args, kwds): # check check already converted, then call original for arg in args: if isinstance(arg, argtype): return func(*args, **kwds) try: # convert string arguments, call func, then convert back the # return value. return enc(func(*dec(args), **dec(kwds))) except UnicodeError: raise util.Abort(_("[win32mbcs] filename conversion failed with" " %s encoding\n") % (_encoding)) def wrapper(func, args, kwds): return basewrapper(func, unicode, encode, decode, args, kwds) def reversewrapper(func, args, kwds): return basewrapper(func, str, decode, encode, args, kwds) def wrapperforlistdir(func, args, kwds): # Ensure 'path' argument ends with os.sep to avoids # misinterpreting last 0x5c of MBCS 2nd byte as path separator. if args: args = list(args) args[0] = appendsep(args[0]) if 'path' in kwds: kwds['path'] = appendsep(kwds['path']) return func(*args, **kwds) def wrapname(name, wrapper): module, name = name.rsplit('.', 1) module = sys.modules[module] func = getattr(module, name) def f(*args, **kwds): return wrapper(func, args, kwds) try: f.__name__ = func.__name__ # fails with Python 2.3 except Exception: pass setattr(module, name, f) # List of functions to be wrapped. # NOTE: os.path.dirname() and os.path.basename() are safe because # they use result of os.path.split() funcs = '''os.path.join os.path.split os.path.splitext os.path.normpath os.makedirs mercurial.util.endswithsep mercurial.util.splitpath mercurial.util.checkcase mercurial.util.fspath mercurial.util.pconvert mercurial.util.normpath mercurial.util.checkwinfilename mercurial.util.checkosfilename mercurial.util.split''' # These functions are required to be called with local encoded string # because they expects argument is local encoded string and cause # problem with unicode string. rfuncs = '''mercurial.encoding.upper mercurial.encoding.lower''' # List of Windows specific functions to be wrapped. winfuncs = '''os.path.splitunc''' # codec and alias names of sjis and big5 to be faked. problematic_encodings = '''big5 big5-tw csbig5 big5hkscs big5-hkscs hkscs cp932 932 ms932 mskanji ms-kanji shift_jis csshiftjis shiftjis sjis s_jis shift_jis_2004 shiftjis2004 sjis_2004 sjis2004 shift_jisx0213 shiftjisx0213 sjisx0213 s_jisx0213 950 cp950 ms950 ''' def extsetup(ui): # TODO: decide use of config section for this extension if ((not os.path.supports_unicode_filenames) and (sys.platform != 'cygwin')): ui.warn(_("[win32mbcs] cannot activate on this platform.\n")) return # determine encoding for filename global _encoding _encoding = ui.config('win32mbcs', 'encoding', encoding.encoding) # fake is only for relevant environment. if _encoding.lower() in problematic_encodings.split(): for f in funcs.split(): wrapname(f, wrapper) if os.name == 'nt': for f in winfuncs.split(): wrapname(f, wrapper) wrapname("mercurial.osutil.listdir", wrapperforlistdir) # wrap functions to be called with local byte string arguments for f in rfuncs.split(): wrapname(f, reversewrapper) # Check sys.args manually instead of using ui.debug() because # command line options is not yet applied when # extensions.loadall() is called. if '--debug' in sys.argv: ui.write("[win32mbcs] activated with encoding: %s\n" % _encoding)