50 ‰ˆÀâ 0áÁä ‹ˆÈâ „¢qÏáÁä?÷‹"""Internationalization and localization support. This module provides internationalization (I18N) and localization (L10N) support for your Python programs by providing an interface to the GNU gettext message catalog library. I18N refers to the operation by which a program is made aware of multiple languages. L10N refers to the adaptation of your program, once internationalized, to the local language and cultural habits. """ # This module represents the integration of work, contributions, feedback, and # suggestions from the following people: # # Martin von Loewis, who wrote the initial implementation of the underlying # C-based libintlmodule (later renamed _gettext), along with a skeletal # gettext.py implementation. # # Peter Funk, who wrote fintl.py, a fairly complete wrapper around intlmodule, # which also included a pure-Python implementation to read .mo files if # intlmodule wasn't available. # # James Henstridge, who also wrote a gettext.py module, which has some # interesting, but currently unsupported experimental features: the notion of # a Catalog class and instances, and the ability to add to a catalog file via # a Python API. # # Barry Warsaw integrated these modules, wrote the .install() API and code, # and conformed all C and Python code to Python's coding standards. # # Francois Pinard and Marc-Andre Lemburg also contributed valuably to this # module. # # J. David Ibanez implemented plural forms. Bruno Haible fixed some bugs. # # TODO: # - Lazy loading of .mo files. Currently the entire catalog is loaded into # memory, but that's probably bad for large translated programs. Instead, # the lexical sort of original strings in GNU .mo files should be exploited # to do binary searches and lazy initializations. Or you might want to use # the undocumented double-hash algorithm for .mo files with hash tables, but # you'll need to study the GNU gettext code to do this. # # - Support Solaris .mo file formats. Unfortunately, we've been unable to # find this format documented anywhere. import os import re import sys __all__ = ['NullTranslations', 'GNUTranslations', 'Catalog', 'find', 'translation', 'install', 'textdomain', 'bindtextdomain', 'bind_textdomain_codeset', 'dgettext', 'dngettext', 'gettext', 'lgettext', 'ldgettext', 'ldngettext', 'lngettext', 'ngettext', 'pgettext', 'dpgettext', 'npgettext', 'dnpgettext', ] _default_localedir = os.path.join(sys.base_prefix, 'share', 'locale') # Expression parsing for plural form selection. # # The gettext library supports a small subset of C syntax. The only # incompatible difference is that integer literals starting with zero are # decimal. # # https://www.gnu.org/software/gettext/manual/gettext.html#Plural-forms # http://git.savannah.gnu.org/cgit/gettext.git/tree/gettext-runtime/intl/plural.y _token_pattern = re.compile(r""" (?P[ \t]+) | # spaces and horizontal tabs (?P[0-9]+\b) | # decimal integer (?Pn\b) | # only n is allowed (?P[()]) | (?P[-*/%+?:]|[>, # <=, >=, ==, !=, &&, ||, # ? : # unary and bitwise ops # not allowed (?P\w+|.) # invalid token """, re.VERBOSE|re.DOTALL) def _tokenize(plural): for mo in re.finditer(_token_pattern, plural): kind = mo.lastgroup if kind == 'WHITESPACES': continue value = mo.group(kind) if kind == 'INVALID': raise ValueError('invalid token in plural form: %s' % value) yield value yield '' def _error(value): if value: return ValueErr