def plural_to_gettext(rule):
"""This is a copy of the code of ``babel.plural.to_gettext``.
We need to use a custom version, because the original only returns
a full plural_forms string, which the Babel catalog object does not
allow us to assign to anything. Instead, we need the expr and the
plural count separately. See http://babel.edgewall.org/ticket/291.
"""
from babel.plural import (PluralRule, _fallback_tag, _plural_tags,
_GettextCompiler)
rule = PluralRule.parse(rule)
used_tags = rule.tags | set([_fallback_tag])
_compile = _GettextCompiler().compile
_get_index = [tag for tag in _plural_tags if tag in used_tags].index
expr = ['(']
for tag, ast in rule.abstract:
expr.append('%s ? %d : ' % (_compile(ast), _get_index(tag)))
expr.append('%d)' % _get_index(_fallback_tag))
return len(used_tags), ''.join(expr)
def plural_to_gettext(rule):
"""This is a copy of the code of ``babel.plural.to_gettext``.
We need to use a custom version, because the original only returns
a full plural_forms string, which the Babel catalog object does not
allow us to assign to anything. Instead, we need the expr and the
plural count separately. See http://babel.edgewall.org/ticket/291.
"""
from babel.plural import PluralRule, _fallback_tag, _plural_tags, _GettextCompiler
rule = PluralRule.parse(rule)
used_tags = rule.tags | set([_fallback_tag])
_compile = _GettextCompiler().compile
_get_index = [tag for tag in _plural_tags if tag in used_tags].index
expr = ["("]
for tag, ast in rule.abstract:
expr.append("%s ? %d : " % (_compile(ast), _get_index(tag)))
expr.append("%d)" % _get_index(_fallback_tag))
return len(used_tags), "".join(expr)