Mercurial > hg
view mercurial/i18n.py @ 24255:4bfe9f2d9761
revlog: addgroup checks if incoming deltas add censored revs, sets flag bit
A censored revision stored in a revlog should have the censored revlog index
flag bit set. This implies we must know if a revision is censored before we
add it to the revlog. When adding revisions from exchanged deltas, we would
prefer to determine this flag without decoding every single full text.
This change introduces a heuristic based on assumptions around the Mercurial
delta format and filelog metadata. Since deltas which produce a censored
revision must be full-replacement deltas, we can read the delta's first bytes
to check the filelog metadata. Since "censored" is the alphabetically first
filelog metadata key, censored filelog revisions have a well-known prefix we
can look for.
For more on the design and background of the censorship feature, see:
http://mercurial.selenic.com/wiki/CensorPlan
author | Mike Edgar <adgar@google.com> |
---|---|
date | Wed, 14 Jan 2015 15:16:08 -0500 |
parents | 3c0983cc279e |
children | 2c07c6884394 |
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# i18n.py - internationalization support for mercurial # # Copyright 2005, 2006 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 encoding import gettext as gettextmod, sys, os, locale # modelled after templater.templatepath: if getattr(sys, 'frozen', None) is not None: module = sys.executable else: module = __file__ _languages = None if (os.name == 'nt' and 'LANGUAGE' not in os.environ and 'LC_ALL' not in os.environ and 'LC_MESSAGES' not in os.environ and 'LANG' not in os.environ): # Try to detect UI language by "User Interface Language Management" API # if no locale variables are set. Note that locale.getdefaultlocale() # uses GetLocaleInfo(), which may be different from UI language. # (See http://msdn.microsoft.com/en-us/library/dd374098(v=VS.85).aspx ) try: import ctypes langid = ctypes.windll.kernel32.GetUserDefaultUILanguage() _languages = [locale.windows_locale[langid]] except (ImportError, AttributeError, KeyError): # ctypes not found or unknown langid pass _ugettext = None def setdatapath(datapath): localedir = os.path.join(datapath, 'locale') t = gettextmod.translation('hg', localedir, _languages, fallback=True) global _ugettext _ugettext = t.ugettext _msgcache = {} def gettext(message): """Translate message. The message is looked up in the catalog to get a Unicode string, which is encoded in the local encoding before being returned. Important: message is restricted to characters in the encoding given by sys.getdefaultencoding() which is most likely 'ascii'. """ # If message is None, t.ugettext will return u'None' as the # translation whereas our callers expect us to return None. if message is None or not _ugettext: return message if message not in _msgcache: if type(message) is unicode: # goofy unicode docstrings in test paragraphs = message.split(u'\n\n') else: paragraphs = [p.decode("ascii") for p in message.split('\n\n')] # Be careful not to translate the empty string -- it holds the # meta data of the .po file. u = u'\n\n'.join([p and _ugettext(p) or '' for p in paragraphs]) try: # encoding.tolocal cannot be used since it will first try to # decode the Unicode string. Calling u.decode(enc) really # means u.encode(sys.getdefaultencoding()).decode(enc). Since # the Python encoding defaults to 'ascii', this fails if the # translated string use non-ASCII characters. _msgcache[message] = u.encode(encoding.encoding, "replace") except LookupError: # An unknown encoding results in a LookupError. _msgcache[message] = message return _msgcache[message] def _plain(): if 'HGPLAIN' not in os.environ and 'HGPLAINEXCEPT' not in os.environ: return False exceptions = os.environ.get('HGPLAINEXCEPT', '').strip().split(',') return 'i18n' not in exceptions if _plain(): _ = lambda message: message else: _ = gettext