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832 lines
32 KiB
Python
832 lines
32 KiB
Python
8 years ago
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# -*- coding: utf-8 -*-
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"""
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babel.messages.catalog
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~~~~~~~~~~~~~~~~~~~~~~
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Data structures for message catalogs.
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:copyright: (c) 2013 by the Babel Team.
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:license: BSD, see LICENSE for more details.
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"""
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import re
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import time
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from cgi import parse_header
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from datetime import datetime, time as time_
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from difflib import get_close_matches
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from email import message_from_string
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from copy import copy
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from babel import __version__ as VERSION
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from babel.core import Locale
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from babel.dates import format_datetime
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from babel.messages.plurals import get_plural
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from babel.util import odict, distinct, LOCALTZ, FixedOffsetTimezone
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from babel._compat import string_types, number_types, PY2, cmp
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__all__ = ['Message', 'Catalog', 'TranslationError']
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PYTHON_FORMAT = re.compile(r'''(?x)
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\%
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(?:\(([\w]*)\))?
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(
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[-#0\ +]?(?:\*|[\d]+)?
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(?:\.(?:\*|[\d]+))?
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[hlL]?
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)
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([diouxXeEfFgGcrs%])
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''')
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class Message(object):
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"""Representation of a single message in a catalog."""
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def __init__(self, id, string=u'', locations=(), flags=(), auto_comments=(),
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user_comments=(), previous_id=(), lineno=None, context=None):
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"""Create the message object.
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:param id: the message ID, or a ``(singular, plural)`` tuple for
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pluralizable messages
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:param string: the translated message string, or a
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``(singular, plural)`` tuple for pluralizable messages
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:param locations: a sequence of ``(filenname, lineno)`` tuples
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:param flags: a set or sequence of flags
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:param auto_comments: a sequence of automatic comments for the message
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:param user_comments: a sequence of user comments for the message
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:param previous_id: the previous message ID, or a ``(singular, plural)``
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tuple for pluralizable messages
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:param lineno: the line number on which the msgid line was found in the
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PO file, if any
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:param context: the message context
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"""
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self.id = id #: The message ID
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if not string and self.pluralizable:
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string = (u'', u'')
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self.string = string #: The message translation
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self.locations = list(distinct(locations))
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self.flags = set(flags)
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if id and self.python_format:
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self.flags.add('python-format')
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else:
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self.flags.discard('python-format')
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self.auto_comments = list(distinct(auto_comments))
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self.user_comments = list(distinct(user_comments))
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if isinstance(previous_id, string_types):
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self.previous_id = [previous_id]
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else:
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self.previous_id = list(previous_id)
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self.lineno = lineno
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self.context = context
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def __repr__(self):
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return '<%s %r (flags: %r)>' % (type(self).__name__, self.id,
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list(self.flags))
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def __cmp__(self, obj):
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"""Compare Messages, taking into account plural ids"""
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def values_to_compare():
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if isinstance(obj, Message):
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plural = self.pluralizable
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obj_plural = obj.pluralizable
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if plural and obj_plural:
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return self.id[0], obj.id[0]
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elif plural:
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return self.id[0], obj.id
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elif obj_plural:
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return self.id, obj.id[0]
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return self.id, obj.id
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this, other = values_to_compare()
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return cmp(this, other)
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def __gt__(self, other):
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return self.__cmp__(other) > 0
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def __lt__(self, other):
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return self.__cmp__(other) < 0
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def __ge__(self, other):
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return self.__cmp__(other) >= 0
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def __le__(self, other):
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return self.__cmp__(other) <= 0
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def __eq__(self, other):
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return self.__cmp__(other) == 0
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def __ne__(self, other):
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return self.__cmp__(other) != 0
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def clone(self):
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return Message(*map(copy, (self.id, self.string, self.locations,
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self.flags, self.auto_comments,
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self.user_comments, self.previous_id,
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self.lineno, self.context)))
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def check(self, catalog=None):
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"""Run various validation checks on the message. Some validations
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are only performed if the catalog is provided. This method returns
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a sequence of `TranslationError` objects.
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:rtype: ``iterator``
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:param catalog: A catalog instance that is passed to the checkers
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:see: `Catalog.check` for a way to perform checks for all messages
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in a catalog.
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"""
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from babel.messages.checkers import checkers
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errors = []
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for checker in checkers:
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try:
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checker(catalog, self)
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except TranslationError as e:
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errors.append(e)
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return errors
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@property
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def fuzzy(self):
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"""Whether the translation is fuzzy.
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>>> Message('foo').fuzzy
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False
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>>> msg = Message('foo', 'foo', flags=['fuzzy'])
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>>> msg.fuzzy
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True
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>>> msg
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<Message 'foo' (flags: ['fuzzy'])>
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:type: `bool`"""
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return 'fuzzy' in self.flags
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@property
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def pluralizable(self):
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"""Whether the message is plurizable.
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>>> Message('foo').pluralizable
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False
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>>> Message(('foo', 'bar')).pluralizable
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True
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:type: `bool`"""
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return isinstance(self.id, (list, tuple))
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@property
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def python_format(self):
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"""Whether the message contains Python-style parameters.
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>>> Message('foo %(name)s bar').python_format
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True
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>>> Message(('foo %(name)s', 'foo %(name)s')).python_format
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True
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:type: `bool`"""
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ids = self.id
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if not isinstance(ids, (list, tuple)):
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ids = [ids]
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return any(PYTHON_FORMAT.search(id) for id in ids)
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class TranslationError(Exception):
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"""Exception thrown by translation checkers when invalid message
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translations are encountered."""
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DEFAULT_HEADER = u"""\
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# Translations template for PROJECT.
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# Copyright (C) YEAR ORGANIZATION
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# This file is distributed under the same license as the PROJECT project.
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# FIRST AUTHOR <EMAIL@ADDRESS>, YEAR.
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#"""
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if PY2:
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def _parse_header(header_string):
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# message_from_string only works for str, not for unicode
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headers = message_from_string(header_string.encode('utf8'))
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decoded_headers = {}
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for name, value in headers.items():
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name = name.decode('utf8')
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value = value.decode('utf8')
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decoded_headers[name] = value
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return decoded_headers
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else:
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_parse_header = message_from_string
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class Catalog(object):
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"""Representation of a message catalog."""
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def __init__(self, locale=None, domain=None, header_comment=DEFAULT_HEADER,
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project=None, version=None, copyright_holder=None,
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msgid_bugs_address=None, creation_date=None,
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revision_date=None, last_translator=None, language_team=None,
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charset=None, fuzzy=True):
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"""Initialize the catalog object.
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:param locale: the locale identifier or `Locale` object, or `None`
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if the catalog is not bound to a locale (which basically
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means it's a template)
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:param domain: the message domain
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:param header_comment: the header comment as string, or `None` for the
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default header
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:param project: the project's name
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:param version: the project's version
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:param copyright_holder: the copyright holder of the catalog
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:param msgid_bugs_address: the email address or URL to submit bug
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reports to
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:param creation_date: the date the catalog was created
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:param revision_date: the date the catalog was revised
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:param last_translator: the name and email of the last translator
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:param language_team: the name and email of the language team
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:param charset: the encoding to use in the output (defaults to utf-8)
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:param fuzzy: the fuzzy bit on the catalog header
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"""
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self.domain = domain #: The message domain
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if locale:
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locale = Locale.parse(locale)
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self.locale = locale #: The locale or `None`
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self._header_comment = header_comment
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self._messages = odict()
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self.project = project or 'PROJECT' #: The project name
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self.version = version or 'VERSION' #: The project version
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self.copyright_holder = copyright_holder or 'ORGANIZATION'
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self.msgid_bugs_address = msgid_bugs_address or 'EMAIL@ADDRESS'
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self.last_translator = last_translator or 'FULL NAME <EMAIL@ADDRESS>'
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"""Name and email address of the last translator."""
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self.language_team = language_team or 'LANGUAGE <LL@li.org>'
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"""Name and email address of the language team."""
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self.charset = charset or 'utf-8'
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if creation_date is None:
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creation_date = datetime.now(LOCALTZ)
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elif isinstance(creation_date, datetime) and not creation_date.tzinfo:
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creation_date = creation_date.replace(tzinfo=LOCALTZ)
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self.creation_date = creation_date #: Creation date of the template
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if revision_date is None:
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revision_date = 'YEAR-MO-DA HO:MI+ZONE'
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elif isinstance(revision_date, datetime) and not revision_date.tzinfo:
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revision_date = revision_date.replace(tzinfo=LOCALTZ)
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self.revision_date = revision_date #: Last revision date of the catalog
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self.fuzzy = fuzzy #: Catalog header fuzzy bit (`True` or `False`)
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self.obsolete = odict() #: Dictionary of obsolete messages
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self._num_plurals = None
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self._plural_expr = None
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def _get_header_comment(self):
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comment = self._header_comment
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year = datetime.now(LOCALTZ).strftime('%Y')
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if hasattr(self.revision_date, 'strftime'):
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year = self.revision_date.strftime('%Y')
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comment = comment.replace('PROJECT', self.project) \
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.replace('VERSION', self.version) \
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.replace('YEAR', year) \
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.replace('ORGANIZATION', self.copyright_holder)
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if self.locale:
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comment = comment.replace('Translations template', '%s translations'
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% self.locale.english_name)
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return comment
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def _set_header_comment(self, string):
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self._header_comment = string
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header_comment = property(_get_header_comment, _set_header_comment, doc="""\
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The header comment for the catalog.
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>>> catalog = Catalog(project='Foobar', version='1.0',
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... copyright_holder='Foo Company')
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>>> print catalog.header_comment #doctest: +ELLIPSIS
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# Translations template for Foobar.
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# Copyright (C) ... Foo Company
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# This file is distributed under the same license as the Foobar project.
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# FIRST AUTHOR <EMAIL@ADDRESS>, ....
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#
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The header can also be set from a string. Any known upper-case variables
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will be replaced when the header is retrieved again:
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>>> catalog = Catalog(project='Foobar', version='1.0',
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... copyright_holder='Foo Company')
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>>> catalog.header_comment = '''\\
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... # The POT for my really cool PROJECT project.
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... # Copyright (C) 1990-2003 ORGANIZATION
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... # This file is distributed under the same license as the PROJECT
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... # project.
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... #'''
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>>> print catalog.header_comment
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# The POT for my really cool Foobar project.
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# Copyright (C) 1990-2003 Foo Company
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# This file is distributed under the same license as the Foobar
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# project.
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#
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:type: `unicode`
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""")
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def _get_mime_headers(self):
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headers = []
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headers.append(('Project-Id-Version',
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'%s %s' % (self.project, self.version)))
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headers.append(('Report-Msgid-Bugs-To', self.msgid_bugs_address))
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headers.append(('POT-Creation-Date',
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format_datetime(self.creation_date, 'yyyy-MM-dd HH:mmZ',
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locale='en')))
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if isinstance(self.revision_date, (datetime, time_) + number_types):
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headers.append(('PO-Revision-Date',
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format_datetime(self.revision_date,
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'yyyy-MM-dd HH:mmZ', locale='en')))
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else:
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headers.append(('PO-Revision-Date', self.revision_date))
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headers.append(('Last-Translator', self.last_translator))
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if (self.locale is not None) and ('LANGUAGE' in self.language_team):
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headers.append(('Language-Team',
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self.language_team.replace('LANGUAGE',
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str(self.locale))))
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else:
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headers.append(('Language-Team', self.language_team))
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if self.locale is not None:
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headers.append(('Plural-Forms', self.plural_forms))
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headers.append(('MIME-Version', '1.0'))
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headers.append(('Content-Type',
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'text/plain; charset=%s' % self.charset))
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headers.append(('Content-Transfer-Encoding', '8bit'))
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headers.append(('Generated-By', 'Babel %s\n' % VERSION))
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return headers
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def _set_mime_headers(self, headers):
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for name, value in headers:
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name = name.lower()
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if name == 'project-id-version':
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parts = value.split(' ')
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self.project = u' '.join(parts[:-1])
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self.version = parts[-1]
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elif name == 'report-msgid-bugs-to':
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self.msgid_bugs_address = value
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||
|
|
elif name == 'last-translator':
|
||
|
|
self.last_translator = value
|
||
|
|
elif name == 'language-team':
|
||
|
|
self.language_team = value
|
||
|
|
elif name == 'content-type':
|
||
|
|
mimetype, params = parse_header(value)
|
||
|
|
if 'charset' in params:
|
||
|
|
self.charset = params['charset'].lower()
|
||
|
|
elif name == 'plural-forms':
|
||
|
|
_, params = parse_header(' ;' + value)
|
||
|
|
self._num_plurals = int(params.get('nplurals', 2))
|
||
|
|
self._plural_expr = params.get('plural', '(n != 1)')
|
||
|
|
elif name == 'pot-creation-date':
|
||
|
|
# FIXME: this should use dates.parse_datetime as soon as that
|
||
|
|
# is ready
|
||
|
|
value, tzoffset, _ = re.split('([+-]\d{4})$', value, 1)
|
||
|
|
|
||
|
|
tt = time.strptime(value, '%Y-%m-%d %H:%M')
|
||
|
|
ts = time.mktime(tt)
|
||
|
|
|
||
|
|
# Separate the offset into a sign component, hours, and minutes
|
||
|
|
plus_minus_s, rest = tzoffset[0], tzoffset[1:]
|
||
|
|
hours_offset_s, mins_offset_s = rest[:2], rest[2:]
|
||
|
|
|
||
|
|
# Make them all integers
|
||
|
|
plus_minus = int(plus_minus_s + '1')
|
||
|
|
hours_offset = int(hours_offset_s)
|
||
|
|
mins_offset = int(mins_offset_s)
|
||
|
|
|
||
|
|
# Calculate net offset
|
||
|
|
net_mins_offset = hours_offset * 60
|
||
|
|
net_mins_offset += mins_offset
|
||
|
|
net_mins_offset *= plus_minus
|
||
|
|
|
||
|
|
# Create an offset object
|
||
|
|
tzoffset = FixedOffsetTimezone(net_mins_offset)
|
||
|
|
|
||
|
|
# Store the offset in a datetime object
|
||
|
|
dt = datetime.fromtimestamp(ts)
|
||
|
|
self.creation_date = dt.replace(tzinfo=tzoffset)
|
||
|
|
elif name == 'po-revision-date':
|
||
|
|
# Keep the value if it's not the default one
|
||
|
|
if 'YEAR' not in value:
|
||
|
|
# FIXME: this should use dates.parse_datetime as soon as
|
||
|
|
# that is ready
|
||
|
|
value, tzoffset, _ = re.split('([+-]\d{4})$', value, 1)
|
||
|
|
tt = time.strptime(value, '%Y-%m-%d %H:%M')
|
||
|
|
ts = time.mktime(tt)
|
||
|
|
|
||
|
|
# Separate the offset into a sign component, hours, and
|
||
|
|
# minutes
|
||
|
|
plus_minus_s, rest = tzoffset[0], tzoffset[1:]
|
||
|
|
hours_offset_s, mins_offset_s = rest[:2], rest[2:]
|
||
|
|
|
||
|
|
# Make them all integers
|
||
|
|
plus_minus = int(plus_minus_s + '1')
|
||
|
|
hours_offset = int(hours_offset_s)
|
||
|
|
mins_offset = int(mins_offset_s)
|
||
|
|
|
||
|
|
# Calculate net offset
|
||
|
|
net_mins_offset = hours_offset * 60
|
||
|
|
net_mins_offset += mins_offset
|
||
|
|
net_mins_offset *= plus_minus
|
||
|
|
|
||
|
|
# Create an offset object
|
||
|
|
tzoffset = FixedOffsetTimezone(net_mins_offset)
|
||
|
|
|
||
|
|
# Store the offset in a datetime object
|
||
|
|
dt = datetime.fromtimestamp(ts)
|
||
|
|
self.revision_date = dt.replace(tzinfo=tzoffset)
|
||
|
|
|
||
|
|
mime_headers = property(_get_mime_headers, _set_mime_headers, doc="""\
|
||
|
|
The MIME headers of the catalog, used for the special ``msgid ""`` entry.
|
||
|
|
|
||
|
|
The behavior of this property changes slightly depending on whether a locale
|
||
|
|
is set or not, the latter indicating that the catalog is actually a template
|
||
|
|
for actual translations.
|
||
|
|
|
||
|
|
Here's an example of the output for such a catalog template:
|
||
|
|
|
||
|
|
>>> from babel.dates import UTC
|
||
|
|
>>> created = datetime(1990, 4, 1, 15, 30, tzinfo=UTC)
|
||
|
|
>>> catalog = Catalog(project='Foobar', version='1.0',
|
||
|
|
... creation_date=created)
|
||
|
|
>>> for name, value in catalog.mime_headers:
|
||
|
|
... print '%s: %s' % (name, value)
|
||
|
|
Project-Id-Version: Foobar 1.0
|
||
|
|
Report-Msgid-Bugs-To: EMAIL@ADDRESS
|
||
|
|
POT-Creation-Date: 1990-04-01 15:30+0000
|
||
|
|
PO-Revision-Date: YEAR-MO-DA HO:MI+ZONE
|
||
|
|
Last-Translator: FULL NAME <EMAIL@ADDRESS>
|
||
|
|
Language-Team: LANGUAGE <LL@li.org>
|
||
|
|
MIME-Version: 1.0
|
||
|
|
Content-Type: text/plain; charset=utf-8
|
||
|
|
Content-Transfer-Encoding: 8bit
|
||
|
|
Generated-By: Babel ...
|
||
|
|
|
||
|
|
And here's an example of the output when the locale is set:
|
||
|
|
|
||
|
|
>>> revised = datetime(1990, 8, 3, 12, 0, tzinfo=UTC)
|
||
|
|
>>> catalog = Catalog(locale='de_DE', project='Foobar', version='1.0',
|
||
|
|
... creation_date=created, revision_date=revised,
|
||
|
|
... last_translator='John Doe <jd@example.com>',
|
||
|
|
... language_team='de_DE <de@example.com>')
|
||
|
|
>>> for name, value in catalog.mime_headers:
|
||
|
|
... print '%s: %s' % (name, value)
|
||
|
|
Project-Id-Version: Foobar 1.0
|
||
|
|
Report-Msgid-Bugs-To: EMAIL@ADDRESS
|
||
|
|
POT-Creation-Date: 1990-04-01 15:30+0000
|
||
|
|
PO-Revision-Date: 1990-08-03 12:00+0000
|
||
|
|
Last-Translator: John Doe <jd@example.com>
|
||
|
|
Language-Team: de_DE <de@example.com>
|
||
|
|
Plural-Forms: nplurals=2; plural=(n != 1)
|
||
|
|
MIME-Version: 1.0
|
||
|
|
Content-Type: text/plain; charset=utf-8
|
||
|
|
Content-Transfer-Encoding: 8bit
|
||
|
|
Generated-By: Babel ...
|
||
|
|
|
||
|
|
:type: `list`
|
||
|
|
""")
|
||
|
|
|
||
|
|
@property
|
||
|
|
def num_plurals(self):
|
||
|
|
"""The number of plurals used by the catalog or locale.
|
||
|
|
|
||
|
|
>>> Catalog(locale='en').num_plurals
|
||
|
|
2
|
||
|
|
>>> Catalog(locale='ga').num_plurals
|
||
|
|
3
|
||
|
|
|
||
|
|
:type: `int`"""
|
||
|
|
if self._num_plurals is None:
|
||
|
|
num = 2
|
||
|
|
if self.locale:
|
||
|
|
num = get_plural(self.locale)[0]
|
||
|
|
self._num_plurals = num
|
||
|
|
return self._num_plurals
|
||
|
|
|
||
|
|
@property
|
||
|
|
def plural_expr(self):
|
||
|
|
"""The plural expression used by the catalog or locale.
|
||
|
|
|
||
|
|
>>> Catalog(locale='en').plural_expr
|
||
|
|
'(n != 1)'
|
||
|
|
>>> Catalog(locale='ga').plural_expr
|
||
|
|
'(n==1 ? 0 : n==2 ? 1 : 2)'
|
||
|
|
|
||
|
|
:type: `string_types`"""
|
||
|
|
if self._plural_expr is None:
|
||
|
|
expr = '(n != 1)'
|
||
|
|
if self.locale:
|
||
|
|
expr = get_plural(self.locale)[1]
|
||
|
|
self._plural_expr = expr
|
||
|
|
return self._plural_expr
|
||
|
|
|
||
|
|
@property
|
||
|
|
def plural_forms(self):
|
||
|
|
"""Return the plural forms declaration for the locale.
|
||
|
|
|
||
|
|
>>> Catalog(locale='en').plural_forms
|
||
|
|
'nplurals=2; plural=(n != 1)'
|
||
|
|
>>> Catalog(locale='pt_BR').plural_forms
|
||
|
|
'nplurals=2; plural=(n > 1)'
|
||
|
|
|
||
|
|
:type: `str`"""
|
||
|
|
return 'nplurals=%s; plural=%s' % (self.num_plurals, self.plural_expr)
|
||
|
|
|
||
|
|
def __contains__(self, id):
|
||
|
|
"""Return whether the catalog has a message with the specified ID."""
|
||
|
|
return self._key_for(id) in self._messages
|
||
|
|
|
||
|
|
def __len__(self):
|
||
|
|
"""The number of messages in the catalog.
|
||
|
|
|
||
|
|
This does not include the special ``msgid ""`` entry."""
|
||
|
|
return len(self._messages)
|
||
|
|
|
||
|
|
def __iter__(self):
|
||
|
|
"""Iterates through all the entries in the catalog, in the order they
|
||
|
|
were added, yielding a `Message` object for every entry.
|
||
|
|
|
||
|
|
:rtype: ``iterator``"""
|
||
|
|
buf = []
|
||
|
|
for name, value in self.mime_headers:
|
||
|
|
buf.append('%s: %s' % (name, value))
|
||
|
|
flags = set()
|
||
|
|
if self.fuzzy:
|
||
|
|
flags |= set(['fuzzy'])
|
||
|
|
yield Message(u'', '\n'.join(buf), flags=flags)
|
||
|
|
for key in self._messages:
|
||
|
|
yield self._messages[key]
|
||
|
|
|
||
|
|
def __repr__(self):
|
||
|
|
locale = ''
|
||
|
|
if self.locale:
|
||
|
|
locale = ' %s' % self.locale
|
||
|
|
return '<%s %r%s>' % (type(self).__name__, self.domain, locale)
|
||
|
|
|
||
|
|
def __delitem__(self, id):
|
||
|
|
"""Delete the message with the specified ID."""
|
||
|
|
self.delete(id)
|
||
|
|
|
||
|
|
def __getitem__(self, id):
|
||
|
|
"""Return the message with the specified ID.
|
||
|
|
|
||
|
|
:param id: the message ID
|
||
|
|
"""
|
||
|
|
return self.get(id)
|
||
|
|
|
||
|
|
def __setitem__(self, id, message):
|
||
|
|
"""Add or update the message with the specified ID.
|
||
|
|
|
||
|
|
>>> catalog = Catalog()
|
||
|
|
>>> catalog[u'foo'] = Message(u'foo')
|
||
|
|
>>> catalog[u'foo']
|
||
|
|
<Message u'foo' (flags: [])>
|
||
|
|
|
||
|
|
If a message with that ID is already in the catalog, it is updated
|
||
|
|
to include the locations and flags of the new message.
|
||
|
|
|
||
|
|
>>> catalog = Catalog()
|
||
|
|
>>> catalog[u'foo'] = Message(u'foo', locations=[('main.py', 1)])
|
||
|
|
>>> catalog[u'foo'].locations
|
||
|
|
[('main.py', 1)]
|
||
|
|
>>> catalog[u'foo'] = Message(u'foo', locations=[('utils.py', 5)])
|
||
|
|
>>> catalog[u'foo'].locations
|
||
|
|
[('main.py', 1), ('utils.py', 5)]
|
||
|
|
|
||
|
|
:param id: the message ID
|
||
|
|
:param message: the `Message` object
|
||
|
|
"""
|
||
|
|
assert isinstance(message, Message), 'expected a Message object'
|
||
|
|
key = self._key_for(id, message.context)
|
||
|
|
current = self._messages.get(key)
|
||
|
|
if current:
|
||
|
|
if message.pluralizable and not current.pluralizable:
|
||
|
|
# The new message adds pluralization
|
||
|
|
current.id = message.id
|
||
|
|
current.string = message.string
|
||
|
|
current.locations = list(distinct(current.locations +
|
||
|
|
message.locations))
|
||
|
|
current.auto_comments = list(distinct(current.auto_comments +
|
||
|
|
message.auto_comments))
|
||
|
|
current.user_comments = list(distinct(current.user_comments +
|
||
|
|
message.user_comments))
|
||
|
|
current.flags |= message.flags
|
||
|
|
message = current
|
||
|
|
elif id == '':
|
||
|
|
# special treatment for the header message
|
||
|
|
self.mime_headers = _parse_header(message.string).items()
|
||
|
|
self.header_comment = '\n'.join([('# %s' % c).rstrip() for c
|
||
|
|
in message.user_comments])
|
||
|
|
self.fuzzy = message.fuzzy
|
||
|
|
else:
|
||
|
|
if isinstance(id, (list, tuple)):
|
||
|
|
assert isinstance(message.string, (list, tuple)), \
|
||
|
|
'Expected sequence but got %s' % type(message.string)
|
||
|
|
self._messages[key] = message
|
||
|
|
|
||
|
|
def add(self, id, string=None, locations=(), flags=(), auto_comments=(),
|
||
|
|
user_comments=(), previous_id=(), lineno=None, context=None):
|
||
|
|
"""Add or update the message with the specified ID.
|
||
|
|
|
||
|
|
>>> catalog = Catalog()
|
||
|
|
>>> catalog.add(u'foo')
|
||
|
|
<Message ...>
|
||
|
|
>>> catalog[u'foo']
|
||
|
|
<Message u'foo' (flags: [])>
|
||
|
|
|
||
|
|
This method simply constructs a `Message` object with the given
|
||
|
|
arguments and invokes `__setitem__` with that object.
|
||
|
|
|
||
|
|
:param id: the message ID, or a ``(singular, plural)`` tuple for
|
||
|
|
pluralizable messages
|
||
|
|
:param string: the translated message string, or a
|
||
|
|
``(singular, plural)`` tuple for pluralizable messages
|
||
|
|
:param locations: a sequence of ``(filenname, lineno)`` tuples
|
||
|
|
:param flags: a set or sequence of flags
|
||
|
|
:param auto_comments: a sequence of automatic comments
|
||
|
|
:param user_comments: a sequence of user comments
|
||
|
|
:param previous_id: the previous message ID, or a ``(singular, plural)``
|
||
|
|
tuple for pluralizable messages
|
||
|
|
:param lineno: the line number on which the msgid line was found in the
|
||
|
|
PO file, if any
|
||
|
|
:param context: the message context
|
||
|
|
"""
|
||
|
|
message = Message(id, string, list(locations), flags, auto_comments,
|
||
|
|
user_comments, previous_id, lineno=lineno,
|
||
|
|
context=context)
|
||
|
|
self[id] = message
|
||
|
|
return message
|
||
|
|
|
||
|
|
def check(self):
|
||
|
|
"""Run various validation checks on the translations in the catalog.
|
||
|
|
|
||
|
|
For every message which fails validation, this method yield a
|
||
|
|
``(message, errors)`` tuple, where ``message`` is the `Message` object
|
||
|
|
and ``errors`` is a sequence of `TranslationError` objects.
|
||
|
|
|
||
|
|
:rtype: ``iterator``
|
||
|
|
"""
|
||
|
|
for message in self._messages.values():
|
||
|
|
errors = message.check(catalog=self)
|
||
|
|
if errors:
|
||
|
|
yield message, errors
|
||
|
|
|
||
|
|
def get(self, id, context=None):
|
||
|
|
"""Return the message with the specified ID and context.
|
||
|
|
|
||
|
|
:param id: the message ID
|
||
|
|
:param context: the message context, or ``None`` for no context
|
||
|
|
"""
|
||
|
|
return self._messages.get(self._key_for(id, context))
|
||
|
|
|
||
|
|
def delete(self, id, context=None):
|
||
|
|
"""Delete the message with the specified ID and context.
|
||
|
|
|
||
|
|
:param id: the message ID
|
||
|
|
:param context: the message context, or ``None`` for no context
|
||
|
|
"""
|
||
|
|
key = self._key_for(id, context)
|
||
|
|
if key in self._messages:
|
||
|
|
del self._messages[key]
|
||
|
|
|
||
|
|
def update(self, template, no_fuzzy_matching=False):
|
||
|
|
"""Update the catalog based on the given template catalog.
|
||
|
|
|
||
|
|
>>> from babel.messages import Catalog
|
||
|
|
>>> template = Catalog()
|
||
|
|
>>> template.add('green', locations=[('main.py', 99)])
|
||
|
|
<Message ...>
|
||
|
|
>>> template.add('blue', locations=[('main.py', 100)])
|
||
|
|
<Message ...>
|
||
|
|
>>> template.add(('salad', 'salads'), locations=[('util.py', 42)])
|
||
|
|
<Message ...>
|
||
|
|
>>> catalog = Catalog(locale='de_DE')
|
||
|
|
>>> catalog.add('blue', u'blau', locations=[('main.py', 98)])
|
||
|
|
<Message ...>
|
||
|
|
>>> catalog.add('head', u'Kopf', locations=[('util.py', 33)])
|
||
|
|
<Message ...>
|
||
|
|
>>> catalog.add(('salad', 'salads'), (u'Salat', u'Salate'),
|
||
|
|
... locations=[('util.py', 38)])
|
||
|
|
<Message ...>
|
||
|
|
|
||
|
|
>>> catalog.update(template)
|
||
|
|
>>> len(catalog)
|
||
|
|
3
|
||
|
|
|
||
|
|
>>> msg1 = catalog['green']
|
||
|
|
>>> msg1.string
|
||
|
|
>>> msg1.locations
|
||
|
|
[('main.py', 99)]
|
||
|
|
|
||
|
|
>>> msg2 = catalog['blue']
|
||
|
|
>>> msg2.string
|
||
|
|
u'blau'
|
||
|
|
>>> msg2.locations
|
||
|
|
[('main.py', 100)]
|
||
|
|
|
||
|
|
>>> msg3 = catalog['salad']
|
||
|
|
>>> msg3.string
|
||
|
|
(u'Salat', u'Salate')
|
||
|
|
>>> msg3.locations
|
||
|
|
[('util.py', 42)]
|
||
|
|
|
||
|
|
Messages that are in the catalog but not in the template are removed
|
||
|
|
from the main collection, but can still be accessed via the `obsolete`
|
||
|
|
member:
|
||
|
|
|
||
|
|
>>> 'head' in catalog
|
||
|
|
False
|
||
|
|
>>> catalog.obsolete.values()
|
||
|
|
[<Message 'head' (flags: [])>]
|
||
|
|
|
||
|
|
:param template: the reference catalog, usually read from a POT file
|
||
|
|
:param no_fuzzy_matching: whether to use fuzzy matching of message IDs
|
||
|
|
"""
|
||
|
|
messages = self._messages
|
||
|
|
remaining = messages.copy()
|
||
|
|
self._messages = odict()
|
||
|
|
|
||
|
|
# Prepare for fuzzy matching
|
||
|
|
fuzzy_candidates = []
|
||
|
|
if not no_fuzzy_matching:
|
||
|
|
fuzzy_candidates = dict([
|
||
|
|
(self._key_for(msgid), messages[msgid].context)
|
||
|
|
for msgid in messages if msgid and messages[msgid].string
|
||
|
|
])
|
||
|
|
fuzzy_matches = set()
|
||
|
|
|
||
|
|
def _merge(message, oldkey, newkey):
|
||
|
|
message = message.clone()
|
||
|
|
fuzzy = False
|
||
|
|
if oldkey != newkey:
|
||
|
|
fuzzy = True
|
||
|
|
fuzzy_matches.add(oldkey)
|
||
|
|
oldmsg = messages.get(oldkey)
|
||
|
|
if isinstance(oldmsg.id, string_types):
|
||
|
|
message.previous_id = [oldmsg.id]
|
||
|
|
else:
|
||
|
|
message.previous_id = list(oldmsg.id)
|
||
|
|
else:
|
||
|
|
oldmsg = remaining.pop(oldkey, None)
|
||
|
|
message.string = oldmsg.string
|
||
|
|
if isinstance(message.id, (list, tuple)):
|
||
|
|
if not isinstance(message.string, (list, tuple)):
|
||
|
|
fuzzy = True
|
||
|
|
message.string = tuple(
|
||
|
|
[message.string] + ([u''] * (len(message.id) - 1))
|
||
|
|
)
|
||
|
|
elif len(message.string) != self.num_plurals:
|
||
|
|
fuzzy = True
|
||
|
|
message.string = tuple(message.string[:len(oldmsg.string)])
|
||
|
|
elif isinstance(message.string, (list, tuple)):
|
||
|
|
fuzzy = True
|
||
|
|
message.string = message.string[0]
|
||
|
|
message.flags |= oldmsg.flags
|
||
|
|
if fuzzy:
|
||
|
|
message.flags |= set([u'fuzzy'])
|
||
|
|
self[message.id] = message
|
||
|
|
|
||
|
|
for message in template:
|
||
|
|
if message.id:
|
||
|
|
key = self._key_for(message.id, message.context)
|
||
|
|
if key in messages:
|
||
|
|
_merge(message, key, key)
|
||
|
|
else:
|
||
|
|
if no_fuzzy_matching is False:
|
||
|
|
# do some fuzzy matching with difflib
|
||
|
|
if isinstance(key, tuple):
|
||
|
|
matchkey = key[0] # just the msgid, no context
|
||
|
|
else:
|
||
|
|
matchkey = key
|
||
|
|
matches = get_close_matches(matchkey.lower().strip(),
|
||
|
|
fuzzy_candidates.keys(), 1)
|
||
|
|
if matches:
|
||
|
|
newkey = matches[0]
|
||
|
|
newctxt = fuzzy_candidates[newkey]
|
||
|
|
if newctxt is not None:
|
||
|
|
newkey = newkey, newctxt
|
||
|
|
_merge(message, newkey, key)
|
||
|
|
continue
|
||
|
|
|
||
|
|
self[message.id] = message
|
||
|
|
|
||
|
|
for msgid in remaining:
|
||
|
|
if no_fuzzy_matching or msgid not in fuzzy_matches:
|
||
|
|
self.obsolete[msgid] = remaining[msgid]
|
||
|
|
# Make updated catalog's POT-Creation-Date equal to the template
|
||
|
|
# used to update the catalog
|
||
|
|
self.creation_date = template.creation_date
|
||
|
|
|
||
|
|
def _key_for(self, id, context=None):
|
||
|
|
"""The key for a message is just the singular ID even for pluralizable
|
||
|
|
messages, but is a ``(msgid, msgctxt)`` tuple for context-specific
|
||
|
|
messages.
|
||
|
|
"""
|
||
|
|
key = id
|
||
|
|
if isinstance(key, (list, tuple)):
|
||
|
|
key = id[0]
|
||
|
|
if context is not None:
|
||
|
|
key = (key, context)
|
||
|
|
return key
|