babel/old/babel-test: babel/plural.py annotate

annotate babel/plural.py @ 530:85e1beadacb0

Update the copyright line.

author	jruigrok
date	Sat, 05 Mar 2011 15:22:28 +0000
parents	eef19ada4296
children

rev	line source
386 4d345ad621c2 Added pluralization support module for the plural definitions from the latest CLDR aronacher parents: diff changeset	1 # -- coding: utf-8 --
4d345ad621c2 Added pluralization support module for the plural definitions from the latest CLDR aronacher parents: diff changeset	2 #
530 85e1beadacb0 Update the copyright line. jruigrok parents: 525 diff changeset	3 # Copyright (C) 2008-2011 Edgewall Software
386 4d345ad621c2 Added pluralization support module for the plural definitions from the latest CLDR aronacher parents: diff changeset	4 # All rights reserved.
4d345ad621c2 Added pluralization support module for the plural definitions from the latest CLDR aronacher parents: diff changeset	5 #
4d345ad621c2 Added pluralization support module for the plural definitions from the latest CLDR aronacher parents: diff changeset	6 # This software is licensed as described in the file COPYING, which
4d345ad621c2 Added pluralization support module for the plural definitions from the latest CLDR aronacher parents: diff changeset	7 # you should have received as part of this distribution. The terms
4d345ad621c2 Added pluralization support module for the plural definitions from the latest CLDR aronacher parents: diff changeset	8 # are also available at http://babel.edgewall.org/wiki/License.
4d345ad621c2 Added pluralization support module for the plural definitions from the latest CLDR aronacher parents: diff changeset	9 #
4d345ad621c2 Added pluralization support module for the plural definitions from the latest CLDR aronacher parents: diff changeset	10 # This software consists of voluntary contributions made by many
4d345ad621c2 Added pluralization support module for the plural definitions from the latest CLDR aronacher parents: diff changeset	11 # individuals. For the exact contribution history, see the revision
4d345ad621c2 Added pluralization support module for the plural definitions from the latest CLDR aronacher parents: diff changeset	12 # history and logs, available at http://babel.edgewall.org/log/.
4d345ad621c2 Added pluralization support module for the plural definitions from the latest CLDR aronacher parents: diff changeset	13
4d345ad621c2 Added pluralization support module for the plural definitions from the latest CLDR aronacher parents: diff changeset	14 """CLDR Plural support. See UTS #35. EXPERIMENTAL"""
4d345ad621c2 Added pluralization support module for the plural definitions from the latest CLDR aronacher parents: diff changeset	15
4d345ad621c2 Added pluralization support module for the plural definitions from the latest CLDR aronacher parents: diff changeset	16 import re
414 ea0da9db79ef fix Python 2.3 compat: rearrange set/itemgetter/rsplit/sorted/unicode.decode pjenvey parents: 411 diff changeset	17
411 3fb050ad01ae More plural module cleanup and fixes. cmlenz parents: 410 diff changeset	18 __all__ = ['PluralRule', 'RuleError', 'to_gettext', 'to_javascript',
3fb050ad01ae More plural module cleanup and fixes. cmlenz parents: 410 diff changeset	19 'to_python']
3fb050ad01ae More plural module cleanup and fixes. cmlenz parents: 410 diff changeset	20 __docformat__ = 'restructuredtext en'
3fb050ad01ae More plural module cleanup and fixes. cmlenz parents: 410 diff changeset	21
386 4d345ad621c2 Added pluralization support module for the plural definitions from the latest CLDR aronacher parents: diff changeset	22
4d345ad621c2 Added pluralization support module for the plural definitions from the latest CLDR aronacher parents: diff changeset	23 _plural_tags = ('zero', 'one', 'two', 'few', 'many', 'other')
4d345ad621c2 Added pluralization support module for the plural definitions from the latest CLDR aronacher parents: diff changeset	24 _fallback_tag = 'other'
4d345ad621c2 Added pluralization support module for the plural definitions from the latest CLDR aronacher parents: diff changeset	25
4d345ad621c2 Added pluralization support module for the plural definitions from the latest CLDR aronacher parents: diff changeset	26
4d345ad621c2 Added pluralization support module for the plural definitions from the latest CLDR aronacher parents: diff changeset	27 class PluralRule(object):
411 3fb050ad01ae More plural module cleanup and fixes. cmlenz parents: 410 diff changeset	28 """Represents a set of language pluralization rules. The constructor
3fb050ad01ae More plural module cleanup and fixes. cmlenz parents: 410 diff changeset	29 accepts a list of (tag, expr) tuples or a dict of CLDR rules. The
3fb050ad01ae More plural module cleanup and fixes. cmlenz parents: 410 diff changeset	30 resulting object is callable and accepts one parameter with a positive or
3fb050ad01ae More plural module cleanup and fixes. cmlenz parents: 410 diff changeset	31 negative number (both integer and float) for the number that indicates the
3fb050ad01ae More plural module cleanup and fixes. cmlenz parents: 410 diff changeset	32 plural form for a string and returns the tag for the format:
386 4d345ad621c2 Added pluralization support module for the plural definitions from the latest CLDR aronacher parents: diff changeset	33
4d345ad621c2 Added pluralization support module for the plural definitions from the latest CLDR aronacher parents: diff changeset	34 >>> rule = PluralRule({'one': 'n is 1'})
4d345ad621c2 Added pluralization support module for the plural definitions from the latest CLDR aronacher parents: diff changeset	35 >>> rule(1)
4d345ad621c2 Added pluralization support module for the plural definitions from the latest CLDR aronacher parents: diff changeset	36 'one'
4d345ad621c2 Added pluralization support module for the plural definitions from the latest CLDR aronacher parents: diff changeset	37 >>> rule(2)
4d345ad621c2 Added pluralization support module for the plural definitions from the latest CLDR aronacher parents: diff changeset	38 'other'
4d345ad621c2 Added pluralization support module for the plural definitions from the latest CLDR aronacher parents: diff changeset	39
4d345ad621c2 Added pluralization support module for the plural definitions from the latest CLDR aronacher parents: diff changeset	40 Currently the CLDR defines these tags: zero, one, two, few, many and
4d345ad621c2 Added pluralization support module for the plural definitions from the latest CLDR aronacher parents: diff changeset	41 other where other is an implicit default. Rules should be mutually
4d345ad621c2 Added pluralization support module for the plural definitions from the latest CLDR aronacher parents: diff changeset	42 exclusive; for a given numeric value, only one rule should apply (i.e.
4d345ad621c2 Added pluralization support module for the plural definitions from the latest CLDR aronacher parents: diff changeset	43 the condition should only be true for one of the plural rule elements.
4d345ad621c2 Added pluralization support module for the plural definitions from the latest CLDR aronacher parents: diff changeset	44 """
4d345ad621c2 Added pluralization support module for the plural definitions from the latest CLDR aronacher parents: diff changeset	45
4d345ad621c2 Added pluralization support module for the plural definitions from the latest CLDR aronacher parents: diff changeset	46 __slots__ = ('abstract', '_func')
4d345ad621c2 Added pluralization support module for the plural definitions from the latest CLDR aronacher parents: diff changeset	47
4d345ad621c2 Added pluralization support module for the plural definitions from the latest CLDR aronacher parents: diff changeset	48 def __init__(self, rules):
411 3fb050ad01ae More plural module cleanup and fixes. cmlenz parents: 410 diff changeset	49 """Initialize the rule instance.
3fb050ad01ae More plural module cleanup and fixes. cmlenz parents: 410 diff changeset	50
3fb050ad01ae More plural module cleanup and fixes. cmlenz parents: 410 diff changeset	51 :param rules: a list of ``(tag, expr)``) tuples with the rules
3fb050ad01ae More plural module cleanup and fixes. cmlenz parents: 410 diff changeset	52 conforming to UTS #35 or a dict with the tags as keys
3fb050ad01ae More plural module cleanup and fixes. cmlenz parents: 410 diff changeset	53 and expressions as values.
3fb050ad01ae More plural module cleanup and fixes. cmlenz parents: 410 diff changeset	54 :raise RuleError: if the expression is malformed
3fb050ad01ae More plural module cleanup and fixes. cmlenz parents: 410 diff changeset	55 """
386 4d345ad621c2 Added pluralization support module for the plural definitions from the latest CLDR aronacher parents: diff changeset	56 if isinstance(rules, dict):
4d345ad621c2 Added pluralization support module for the plural definitions from the latest CLDR aronacher parents: diff changeset	57 rules = rules.items()
4d345ad621c2 Added pluralization support module for the plural definitions from the latest CLDR aronacher parents: diff changeset	58 found = set()
4d345ad621c2 Added pluralization support module for the plural definitions from the latest CLDR aronacher parents: diff changeset	59 self.abstract = []
4d345ad621c2 Added pluralization support module for the plural definitions from the latest CLDR aronacher parents: diff changeset	60 for key, expr in rules:
4d345ad621c2 Added pluralization support module for the plural definitions from the latest CLDR aronacher parents: diff changeset	61 if key not in _plural_tags:
4d345ad621c2 Added pluralization support module for the plural definitions from the latest CLDR aronacher parents: diff changeset	62 raise ValueError('unknown tag %r' % key)
4d345ad621c2 Added pluralization support module for the plural definitions from the latest CLDR aronacher parents: diff changeset	63 elif key in found:
4d345ad621c2 Added pluralization support module for the plural definitions from the latest CLDR aronacher parents: diff changeset	64 raise ValueError('tag %r defined twice' % key)
4d345ad621c2 Added pluralization support module for the plural definitions from the latest CLDR aronacher parents: diff changeset	65 found.add(key)
4d345ad621c2 Added pluralization support module for the plural definitions from the latest CLDR aronacher parents: diff changeset	66 self.abstract.append((key, _Parser(expr).ast))
4d345ad621c2 Added pluralization support module for the plural definitions from the latest CLDR aronacher parents: diff changeset	67
390 ecf110e7f604 Preliminary support for timedelta formatting (see #126), and import/expose the locale plural rules from the CLDR. cmlenz parents: 387 diff changeset	68 def __repr__(self):
393 d85b5a78ee9c alternative repr for plural rules aronacher parents: 392 diff changeset	69 rules = self.rules
d85b5a78ee9c alternative repr for plural rules aronacher parents: 392 diff changeset	70 return '<%s %r>' % (
d85b5a78ee9c alternative repr for plural rules aronacher parents: 392 diff changeset	71 type(self).__name__,
d85b5a78ee9c alternative repr for plural rules aronacher parents: 392 diff changeset	72 ', '.join(['%s: %s' % (tag, rules[tag]) for tag in _plural_tags
d85b5a78ee9c alternative repr for plural rules aronacher parents: 392 diff changeset	73 if tag in rules])
d85b5a78ee9c alternative repr for plural rules aronacher parents: 392 diff changeset	74 )
390 ecf110e7f604 Preliminary support for timedelta formatting (see #126), and import/expose the locale plural rules from the CLDR. cmlenz parents: 387 diff changeset	75
386 4d345ad621c2 Added pluralization support module for the plural definitions from the latest CLDR aronacher parents: diff changeset	76 def parse(cls, rules):
4d345ad621c2 Added pluralization support module for the plural definitions from the latest CLDR aronacher parents: diff changeset	77 """Create a `PluralRule` instance for the given rules. If the rules
4d345ad621c2 Added pluralization support module for the plural definitions from the latest CLDR aronacher parents: diff changeset	78 are a `PluralRule` object, that object is returned.
4d345ad621c2 Added pluralization support module for the plural definitions from the latest CLDR aronacher parents: diff changeset	79
4d345ad621c2 Added pluralization support module for the plural definitions from the latest CLDR aronacher parents: diff changeset	80 :param rules: the rules as list or dict, or a `PluralRule` object
4d345ad621c2 Added pluralization support module for the plural definitions from the latest CLDR aronacher parents: diff changeset	81 :return: a corresponding `PluralRule` object
410 be5e0f69137b Fix some epydoc usage in the `plural` module. cmlenz parents: 393 diff changeset	82 :raise Ruleerror: if the expression is malformed
386 4d345ad621c2 Added pluralization support module for the plural definitions from the latest CLDR aronacher parents: diff changeset	83 """
4d345ad621c2 Added pluralization support module for the plural definitions from the latest CLDR aronacher parents: diff changeset	84 if isinstance(rules, cls):
4d345ad621c2 Added pluralization support module for the plural definitions from the latest CLDR aronacher parents: diff changeset	85 return rules
4d345ad621c2 Added pluralization support module for the plural definitions from the latest CLDR aronacher parents: diff changeset	86 return cls(rules)
4d345ad621c2 Added pluralization support module for the plural definitions from the latest CLDR aronacher parents: diff changeset	87 parse = classmethod(parse)
4d345ad621c2 Added pluralization support module for the plural definitions from the latest CLDR aronacher parents: diff changeset	88
4d345ad621c2 Added pluralization support module for the plural definitions from the latest CLDR aronacher parents: diff changeset	89 def rules(self):
411 3fb050ad01ae More plural module cleanup and fixes. cmlenz parents: 410 diff changeset	90 """The `PluralRule` as a dict of unicode plural rules.
3fb050ad01ae More plural module cleanup and fixes. cmlenz parents: 410 diff changeset	91
3fb050ad01ae More plural module cleanup and fixes. cmlenz parents: 410 diff changeset	92 >>> rule = PluralRule({'one': 'n is 1'})
3fb050ad01ae More plural module cleanup and fixes. cmlenz parents: 410 diff changeset	93 >>> rule.rules
3fb050ad01ae More plural module cleanup and fixes. cmlenz parents: 410 diff changeset	94 {'one': 'n is 1'}
3fb050ad01ae More plural module cleanup and fixes. cmlenz parents: 410 diff changeset	95 """
386 4d345ad621c2 Added pluralization support module for the plural definitions from the latest CLDR aronacher parents: diff changeset	96 _compile = _UnicodeCompiler().compile
4d345ad621c2 Added pluralization support module for the plural definitions from the latest CLDR aronacher parents: diff changeset	97 return dict([(tag, _compile(ast)) for tag, ast in self.abstract])
4d345ad621c2 Added pluralization support module for the plural definitions from the latest CLDR aronacher parents: diff changeset	98 rules = property(rules, doc=rules.__doc__)
4d345ad621c2 Added pluralization support module for the plural definitions from the latest CLDR aronacher parents: diff changeset	99
4d345ad621c2 Added pluralization support module for the plural definitions from the latest CLDR aronacher parents: diff changeset	100 tags = property(lambda x: frozenset([i[0] for i in x.abstract]), doc="""
4d345ad621c2 Added pluralization support module for the plural definitions from the latest CLDR aronacher parents: diff changeset	101 A set of explicitly defined tags in this rule. The implicit default
4d345ad621c2 Added pluralization support module for the plural definitions from the latest CLDR aronacher parents: diff changeset	102 ``'other'`` rules is not part of this set unless there is an explicit
4d345ad621c2 Added pluralization support module for the plural definitions from the latest CLDR aronacher parents: diff changeset	103 rule for it.""")
4d345ad621c2 Added pluralization support module for the plural definitions from the latest CLDR aronacher parents: diff changeset	104
4d345ad621c2 Added pluralization support module for the plural definitions from the latest CLDR aronacher parents: diff changeset	105 def __getstate__(self):
4d345ad621c2 Added pluralization support module for the plural definitions from the latest CLDR aronacher parents: diff changeset	106 return self.abstract
4d345ad621c2 Added pluralization support module for the plural definitions from the latest CLDR aronacher parents: diff changeset	107
4d345ad621c2 Added pluralization support module for the plural definitions from the latest CLDR aronacher parents: diff changeset	108 def __setstate__(self, abstract):
4d345ad621c2 Added pluralization support module for the plural definitions from the latest CLDR aronacher parents: diff changeset	109 self.abstract = abstract
4d345ad621c2 Added pluralization support module for the plural definitions from the latest CLDR aronacher parents: diff changeset	110
4d345ad621c2 Added pluralization support module for the plural definitions from the latest CLDR aronacher parents: diff changeset	111 def __call__(self, n):
4d345ad621c2 Added pluralization support module for the plural definitions from the latest CLDR aronacher parents: diff changeset	112 if not hasattr(self, '_func'):
4d345ad621c2 Added pluralization support module for the plural definitions from the latest CLDR aronacher parents: diff changeset	113 self._func = to_python(self)
4d345ad621c2 Added pluralization support module for the plural definitions from the latest CLDR aronacher parents: diff changeset	114 return self._func(n)
4d345ad621c2 Added pluralization support module for the plural definitions from the latest CLDR aronacher parents: diff changeset	115
4d345ad621c2 Added pluralization support module for the plural definitions from the latest CLDR aronacher parents: diff changeset	116
387 2edbea56d2bd Some refactoring in plural.py aronacher parents: 386 diff changeset	117 def to_javascript(rule):
386 4d345ad621c2 Added pluralization support module for the plural definitions from the latest CLDR aronacher parents: diff changeset	118 """Convert a list/dict of rules or a `PluralRule` object into a JavaScript
4d345ad621c2 Added pluralization support module for the plural definitions from the latest CLDR aronacher parents: diff changeset	119 function. This function depends on no external library:
4d345ad621c2 Added pluralization support module for the plural definitions from the latest CLDR aronacher parents: diff changeset	120
4d345ad621c2 Added pluralization support module for the plural definitions from the latest CLDR aronacher parents: diff changeset	121 >>> to_javascript({'one': 'n is 1'})
4d345ad621c2 Added pluralization support module for the plural definitions from the latest CLDR aronacher parents: diff changeset	122 "(function(n) { return (n == 1) ? 'one' : 'other'; })"
4d345ad621c2 Added pluralization support module for the plural definitions from the latest CLDR aronacher parents: diff changeset	123
4d345ad621c2 Added pluralization support module for the plural definitions from the latest CLDR aronacher parents: diff changeset	124 Implementation detail: The function generated will probably evaluate
4d345ad621c2 Added pluralization support module for the plural definitions from the latest CLDR aronacher parents: diff changeset	125 expressions involved into range operations multiple times. This has the
4d345ad621c2 Added pluralization support module for the plural definitions from the latest CLDR aronacher parents: diff changeset	126 advantage that external helper functions are not required and is not a
4d345ad621c2 Added pluralization support module for the plural definitions from the latest CLDR aronacher parents: diff changeset	127 big performance hit for these simple calculations.
4d345ad621c2 Added pluralization support module for the plural definitions from the latest CLDR aronacher parents: diff changeset	128
411 3fb050ad01ae More plural module cleanup and fixes. cmlenz parents: 410 diff changeset	129 :param rule: the rules as list or dict, or a `PluralRule` object
386 4d345ad621c2 Added pluralization support module for the plural definitions from the latest CLDR aronacher parents: diff changeset	130 :return: a corresponding JavaScript function as `str`
410 be5e0f69137b Fix some epydoc usage in the `plural` module. cmlenz parents: 393 diff changeset	131 :raise RuleError: if the expression is malformed
386 4d345ad621c2 Added pluralization support module for the plural definitions from the latest CLDR aronacher parents: diff changeset	132 """
4d345ad621c2 Added pluralization support module for the plural definitions from the latest CLDR aronacher parents: diff changeset	133 to_js = _JavaScriptCompiler().compile
4d345ad621c2 Added pluralization support module for the plural definitions from the latest CLDR aronacher parents: diff changeset	134 result = ['(function(n) { return ']
387 2edbea56d2bd Some refactoring in plural.py aronacher parents: 386 diff changeset	135 for tag, ast in PluralRule.parse(rule).abstract:
386 4d345ad621c2 Added pluralization support module for the plural definitions from the latest CLDR aronacher parents: diff changeset	136 result.append('%s ? %r : ' % (to_js(ast), tag))
4d345ad621c2 Added pluralization support module for the plural definitions from the latest CLDR aronacher parents: diff changeset	137 result.append('%r; })' % _fallback_tag)
4d345ad621c2 Added pluralization support module for the plural definitions from the latest CLDR aronacher parents: diff changeset	138 return ''.join(result)
4d345ad621c2 Added pluralization support module for the plural definitions from the latest CLDR aronacher parents: diff changeset	139
4d345ad621c2 Added pluralization support module for the plural definitions from the latest CLDR aronacher parents: diff changeset	140
4d345ad621c2 Added pluralization support module for the plural definitions from the latest CLDR aronacher parents: diff changeset	141 def to_python(rule):
4d345ad621c2 Added pluralization support module for the plural definitions from the latest CLDR aronacher parents: diff changeset	142 """Convert a list/dict of rules or a `PluralRule` object into a regular
4d345ad621c2 Added pluralization support module for the plural definitions from the latest CLDR aronacher parents: diff changeset	143 Python function. This is useful in situations where you need a real
4d345ad621c2 Added pluralization support module for the plural definitions from the latest CLDR aronacher parents: diff changeset	144 function and don't are about the actual rule object:
4d345ad621c2 Added pluralization support module for the plural definitions from the latest CLDR aronacher parents: diff changeset	145
4d345ad621c2 Added pluralization support module for the plural definitions from the latest CLDR aronacher parents: diff changeset	146 >>> func = to_python({'one': 'n is 1', 'few': 'n in 2..4'})
4d345ad621c2 Added pluralization support module for the plural definitions from the latest CLDR aronacher parents: diff changeset	147 >>> func(1)
4d345ad621c2 Added pluralization support module for the plural definitions from the latest CLDR aronacher parents: diff changeset	148 'one'
4d345ad621c2 Added pluralization support module for the plural definitions from the latest CLDR aronacher parents: diff changeset	149 >>> func(3)
4d345ad621c2 Added pluralization support module for the plural definitions from the latest CLDR aronacher parents: diff changeset	150 'few'
4d345ad621c2 Added pluralization support module for the plural definitions from the latest CLDR aronacher parents: diff changeset	151
411 3fb050ad01ae More plural module cleanup and fixes. cmlenz parents: 410 diff changeset	152 :param rule: the rules as list or dict, or a `PluralRule` object
386 4d345ad621c2 Added pluralization support module for the plural definitions from the latest CLDR aronacher parents: diff changeset	153 :return: a corresponding Python function
410 be5e0f69137b Fix some epydoc usage in the `plural` module. cmlenz parents: 393 diff changeset	154 :raise RuleError: if the expression is malformed
386 4d345ad621c2 Added pluralization support module for the plural definitions from the latest CLDR aronacher parents: diff changeset	155 """
4d345ad621c2 Added pluralization support module for the plural definitions from the latest CLDR aronacher parents: diff changeset	156 namespace = {
4d345ad621c2 Added pluralization support module for the plural definitions from the latest CLDR aronacher parents: diff changeset	157 'IN': in_range,
4d345ad621c2 Added pluralization support module for the plural definitions from the latest CLDR aronacher parents: diff changeset	158 'WITHIN': within_range,
4d345ad621c2 Added pluralization support module for the plural definitions from the latest CLDR aronacher parents: diff changeset	159 'MOD': cldr_modulo
4d345ad621c2 Added pluralization support module for the plural definitions from the latest CLDR aronacher parents: diff changeset	160 }
4d345ad621c2 Added pluralization support module for the plural definitions from the latest CLDR aronacher parents: diff changeset	161 to_python = _PythonCompiler().compile
4d345ad621c2 Added pluralization support module for the plural definitions from the latest CLDR aronacher parents: diff changeset	162 result = ['def evaluate(n):']
411 3fb050ad01ae More plural module cleanup and fixes. cmlenz parents: 410 diff changeset	163 for tag, ast in PluralRule.parse(rule).abstract:
386 4d345ad621c2 Added pluralization support module for the plural definitions from the latest CLDR aronacher parents: diff changeset	164 result.append(' if (%s): return %r' % (to_python(ast), tag))
4d345ad621c2 Added pluralization support module for the plural definitions from the latest CLDR aronacher parents: diff changeset	165 result.append(' return %r' % _fallback_tag)
4d345ad621c2 Added pluralization support module for the plural definitions from the latest CLDR aronacher parents: diff changeset	166 exec '\n'.join(result) in namespace
4d345ad621c2 Added pluralization support module for the plural definitions from the latest CLDR aronacher parents: diff changeset	167 return namespace['evaluate']
4d345ad621c2 Added pluralization support module for the plural definitions from the latest CLDR aronacher parents: diff changeset	168
4d345ad621c2 Added pluralization support module for the plural definitions from the latest CLDR aronacher parents: diff changeset	169
387 2edbea56d2bd Some refactoring in plural.py aronacher parents: 386 diff changeset	170 def to_gettext(rule):
2edbea56d2bd Some refactoring in plural.py aronacher parents: 386 diff changeset	171 """The plural rule as gettext expression. The gettext expression is
2edbea56d2bd Some refactoring in plural.py aronacher parents: 386 diff changeset	172 technically limited to integers and returns indices rather than tags.
2edbea56d2bd Some refactoring in plural.py aronacher parents: 386 diff changeset	173
2edbea56d2bd Some refactoring in plural.py aronacher parents: 386 diff changeset	174 >>> to_gettext({'one': 'n is 1', 'two': 'n is 2'})
2edbea56d2bd Some refactoring in plural.py aronacher parents: 386 diff changeset	175 'nplurals=3; plural=((n == 2) ? 1 : (n == 1) ? 0 : 2)'
411 3fb050ad01ae More plural module cleanup and fixes. cmlenz parents: 410 diff changeset	176
3fb050ad01ae More plural module cleanup and fixes. cmlenz parents: 410 diff changeset	177 :param rule: the rules as list or dict, or a `PluralRule` object
3fb050ad01ae More plural module cleanup and fixes. cmlenz parents: 410 diff changeset	178 :return: an equivalent gettext-style plural expression
3fb050ad01ae More plural module cleanup and fixes. cmlenz parents: 410 diff changeset	179 :raise RuleError: if the expression is malformed
387 2edbea56d2bd Some refactoring in plural.py aronacher parents: 386 diff changeset	180 """
411 3fb050ad01ae More plural module cleanup and fixes. cmlenz parents: 410 diff changeset	181 rule = PluralRule.parse(rule)
3fb050ad01ae More plural module cleanup and fixes. cmlenz parents: 410 diff changeset	182
3fb050ad01ae More plural module cleanup and fixes. cmlenz parents: 410 diff changeset	183 used_tags = rule.tags \| set([_fallback_tag])
3fb050ad01ae More plural module cleanup and fixes. cmlenz parents: 410 diff changeset	184 _compile = _GettextCompiler().compile
3fb050ad01ae More plural module cleanup and fixes. cmlenz parents: 410 diff changeset	185 _get_index = [tag for tag in _plural_tags if tag in used_tags].index
3fb050ad01ae More plural module cleanup and fixes. cmlenz parents: 410 diff changeset	186
3fb050ad01ae More plural module cleanup and fixes. cmlenz parents: 410 diff changeset	187 result = ['nplurals=%d; plural=(' % len(used_tags)]
3fb050ad01ae More plural module cleanup and fixes. cmlenz parents: 410 diff changeset	188 for tag, ast in rule.abstract:
3fb050ad01ae More plural module cleanup and fixes. cmlenz parents: 410 diff changeset	189 result.append('%s ? %d : ' % (_compile(ast), _get_index(tag)))
3fb050ad01ae More plural module cleanup and fixes. cmlenz parents: 410 diff changeset	190 result.append('%d)' % _get_index(_fallback_tag))
3fb050ad01ae More plural module cleanup and fixes. cmlenz parents: 410 diff changeset	191 return ''.join(result)
387 2edbea56d2bd Some refactoring in plural.py aronacher parents: 386 diff changeset	192
2edbea56d2bd Some refactoring in plural.py aronacher parents: 386 diff changeset	193
386 4d345ad621c2 Added pluralization support module for the plural definitions from the latest CLDR aronacher parents: diff changeset	194 def in_range(num, min, max):
4d345ad621c2 Added pluralization support module for the plural definitions from the latest CLDR aronacher parents: diff changeset	195 """Integer range test. This is the callback for the "in" operator
4d345ad621c2 Added pluralization support module for the plural definitions from the latest CLDR aronacher parents: diff changeset	196 of the UTS #35 pluralization rule language:
4d345ad621c2 Added pluralization support module for the plural definitions from the latest CLDR aronacher parents: diff changeset	197
4d345ad621c2 Added pluralization support module for the plural definitions from the latest CLDR aronacher parents: diff changeset	198 >>> in_range(1, 1, 3)
4d345ad621c2 Added pluralization support module for the plural definitions from the latest CLDR aronacher parents: diff changeset	199 True
4d345ad621c2 Added pluralization support module for the plural definitions from the latest CLDR aronacher parents: diff changeset	200 >>> in_range(3, 1, 3)
4d345ad621c2 Added pluralization support module for the plural definitions from the latest CLDR aronacher parents: diff changeset	201 True
4d345ad621c2 Added pluralization support module for the plural definitions from the latest CLDR aronacher parents: diff changeset	202 >>> in_range(1.2, 1, 4)
4d345ad621c2 Added pluralization support module for the plural definitions from the latest CLDR aronacher parents: diff changeset	203 False
4d345ad621c2 Added pluralization support module for the plural definitions from the latest CLDR aronacher parents: diff changeset	204 >>> in_range(10, 1, 4)
4d345ad621c2 Added pluralization support module for the plural definitions from the latest CLDR aronacher parents: diff changeset	205 False
4d345ad621c2 Added pluralization support module for the plural definitions from the latest CLDR aronacher parents: diff changeset	206 """
4d345ad621c2 Added pluralization support module for the plural definitions from the latest CLDR aronacher parents: diff changeset	207 return num == int(num) and within_range(num, min, max)
4d345ad621c2 Added pluralization support module for the plural definitions from the latest CLDR aronacher parents: diff changeset	208
4d345ad621c2 Added pluralization support module for the plural definitions from the latest CLDR aronacher parents: diff changeset	209
4d345ad621c2 Added pluralization support module for the plural definitions from the latest CLDR aronacher parents: diff changeset	210 def within_range(num, min, max):
4d345ad621c2 Added pluralization support module for the plural definitions from the latest CLDR aronacher parents: diff changeset	211 """Float range test. This is the callback for the "within" operator
4d345ad621c2 Added pluralization support module for the plural definitions from the latest CLDR aronacher parents: diff changeset	212 of the UTS #35 pluralization rule language:
4d345ad621c2 Added pluralization support module for the plural definitions from the latest CLDR aronacher parents: diff changeset	213
4d345ad621c2 Added pluralization support module for the plural definitions from the latest CLDR aronacher parents: diff changeset	214 >>> within_range(1, 1, 3)
4d345ad621c2 Added pluralization support module for the plural definitions from the latest CLDR aronacher parents: diff changeset	215 True
4d345ad621c2 Added pluralization support module for the plural definitions from the latest CLDR aronacher parents: diff changeset	216 >>> within_range(1.0, 1, 3)
4d345ad621c2 Added pluralization support module for the plural definitions from the latest CLDR aronacher parents: diff changeset	217 True
4d345ad621c2 Added pluralization support module for the plural definitions from the latest CLDR aronacher parents: diff changeset	218 >>> within_range(1.2, 1, 4)
4d345ad621c2 Added pluralization support module for the plural definitions from the latest CLDR aronacher parents: diff changeset	219 True
4d345ad621c2 Added pluralization support module for the plural definitions from the latest CLDR aronacher parents: diff changeset	220 >>> within_range(10, 1, 4)
4d345ad621c2 Added pluralization support module for the plural definitions from the latest CLDR aronacher parents: diff changeset	221 False
4d345ad621c2 Added pluralization support module for the plural definitions from the latest CLDR aronacher parents: diff changeset	222 """
4d345ad621c2 Added pluralization support module for the plural definitions from the latest CLDR aronacher parents: diff changeset	223 return num >= min and num <= max
4d345ad621c2 Added pluralization support module for the plural definitions from the latest CLDR aronacher parents: diff changeset	224
4d345ad621c2 Added pluralization support module for the plural definitions from the latest CLDR aronacher parents: diff changeset	225
4d345ad621c2 Added pluralization support module for the plural definitions from the latest CLDR aronacher parents: diff changeset	226 def cldr_modulo(a, b):
4d345ad621c2 Added pluralization support module for the plural definitions from the latest CLDR aronacher parents: diff changeset	227 """Javaish modulo. This modulo operator returns the value with the sign
4d345ad621c2 Added pluralization support module for the plural definitions from the latest CLDR aronacher parents: diff changeset	228 of the dividend rather than the divisor like Python does:
4d345ad621c2 Added pluralization support module for the plural definitions from the latest CLDR aronacher parents: diff changeset	229
4d345ad621c2 Added pluralization support module for the plural definitions from the latest CLDR aronacher parents: diff changeset	230 >>> cldr_modulo(-3, 5)
4d345ad621c2 Added pluralization support module for the plural definitions from the latest CLDR aronacher parents: diff changeset	231 -3
4d345ad621c2 Added pluralization support module for the plural definitions from the latest CLDR aronacher parents: diff changeset	232 >>> cldr_modulo(-3, -5)
4d345ad621c2 Added pluralization support module for the plural definitions from the latest CLDR aronacher parents: diff changeset	233 -3
4d345ad621c2 Added pluralization support module for the plural definitions from the latest CLDR aronacher parents: diff changeset	234 >>> cldr_modulo(3, 5)
4d345ad621c2 Added pluralization support module for the plural definitions from the latest CLDR aronacher parents: diff changeset	235 3
4d345ad621c2 Added pluralization support module for the plural definitions from the latest CLDR aronacher parents: diff changeset	236 """
4d345ad621c2 Added pluralization support module for the plural definitions from the latest CLDR aronacher parents: diff changeset	237 reverse = 0
4d345ad621c2 Added pluralization support module for the plural definitions from the latest CLDR aronacher parents: diff changeset	238 if a < 0:
4d345ad621c2 Added pluralization support module for the plural definitions from the latest CLDR aronacher parents: diff changeset	239 a *= -1
4d345ad621c2 Added pluralization support module for the plural definitions from the latest CLDR aronacher parents: diff changeset	240 reverse = 1
4d345ad621c2 Added pluralization support module for the plural definitions from the latest CLDR aronacher parents: diff changeset	241 if b < 0:
4d345ad621c2 Added pluralization support module for the plural definitions from the latest CLDR aronacher parents: diff changeset	242 b *= -1
4d345ad621c2 Added pluralization support module for the plural definitions from the latest CLDR aronacher parents: diff changeset	243 rv = a % b
4d345ad621c2 Added pluralization support module for the plural definitions from the latest CLDR aronacher parents: diff changeset	244 if reverse:
4d345ad621c2 Added pluralization support module for the plural definitions from the latest CLDR aronacher parents: diff changeset	245 rv *= -1
4d345ad621c2 Added pluralization support module for the plural definitions from the latest CLDR aronacher parents: diff changeset	246 return rv
4d345ad621c2 Added pluralization support module for the plural definitions from the latest CLDR aronacher parents: diff changeset	247
4d345ad621c2 Added pluralization support module for the plural definitions from the latest CLDR aronacher parents: diff changeset	248
4d345ad621c2 Added pluralization support module for the plural definitions from the latest CLDR aronacher parents: diff changeset	249 class RuleError(Exception):
4d345ad621c2 Added pluralization support module for the plural definitions from the latest CLDR aronacher parents: diff changeset	250 """Raised if a rule is malformed."""
4d345ad621c2 Added pluralization support module for the plural definitions from the latest CLDR aronacher parents: diff changeset	251
4d345ad621c2 Added pluralization support module for the plural definitions from the latest CLDR aronacher parents: diff changeset	252
4d345ad621c2 Added pluralization support module for the plural definitions from the latest CLDR aronacher parents: diff changeset	253 class _Parser(object):
4d345ad621c2 Added pluralization support module for the plural definitions from the latest CLDR aronacher parents: diff changeset	254 """Internal parser. This class can translate a single rule into an abstract
4d345ad621c2 Added pluralization support module for the plural definitions from the latest CLDR aronacher parents: diff changeset	255 tree of tuples. It implements the following grammar::
4d345ad621c2 Added pluralization support module for the plural definitions from the latest CLDR aronacher parents: diff changeset	256
4d345ad621c2 Added pluralization support module for the plural definitions from the latest CLDR aronacher parents: diff changeset	257 condition = and_condition ('or' and_condition)*
4d345ad621c2 Added pluralization support module for the plural definitions from the latest CLDR aronacher parents: diff changeset	258 and_condition = relation ('and' relation)*
4d345ad621c2 Added pluralization support module for the plural definitions from the latest CLDR aronacher parents: diff changeset	259 relation = is_relation \| in_relation \| within_relation \| 'n' <EOL>
4d345ad621c2 Added pluralization support module for the plural definitions from the latest CLDR aronacher parents: diff changeset	260 is_relation = expr 'is' ('not')? value
4d345ad621c2 Added pluralization support module for the plural definitions from the latest CLDR aronacher parents: diff changeset	261 in_relation = expr ('not')? 'in' range
4d345ad621c2 Added pluralization support module for the plural definitions from the latest CLDR aronacher parents: diff changeset	262 within_relation = expr ('not')? 'within' range
4d345ad621c2 Added pluralization support module for the plural definitions from the latest CLDR aronacher parents: diff changeset	263 expr = 'n' ('mod' value)?
4d345ad621c2 Added pluralization support module for the plural definitions from the latest CLDR aronacher parents: diff changeset	264 value = digit+
4d345ad621c2 Added pluralization support module for the plural definitions from the latest CLDR aronacher parents: diff changeset	265 digit = 0\|1\|2\|3\|4\|5\|6\|7\|8\|9
4d345ad621c2 Added pluralization support module for the plural definitions from the latest CLDR aronacher parents: diff changeset	266 range = value'..'value
4d345ad621c2 Added pluralization support module for the plural definitions from the latest CLDR aronacher parents: diff changeset	267
4d345ad621c2 Added pluralization support module for the plural definitions from the latest CLDR aronacher parents: diff changeset	268 - Whitespace can occur between or around any of the above tokens.
4d345ad621c2 Added pluralization support module for the plural definitions from the latest CLDR aronacher parents: diff changeset	269 - Rules should be mutually exclusive; for a given numeric value, only one
4d345ad621c2 Added pluralization support module for the plural definitions from the latest CLDR aronacher parents: diff changeset	270 rule should apply (i.e. the condition should only be true for one of
4d345ad621c2 Added pluralization support module for the plural definitions from the latest CLDR aronacher parents: diff changeset	271 the plural rule elements.
4d345ad621c2 Added pluralization support module for the plural definitions from the latest CLDR aronacher parents: diff changeset	272
4d345ad621c2 Added pluralization support module for the plural definitions from the latest CLDR aronacher parents: diff changeset	273 The translator parses the expression on instanciation into an attribute
4d345ad621c2 Added pluralization support module for the plural definitions from the latest CLDR aronacher parents: diff changeset	274 called `ast`.
4d345ad621c2 Added pluralization support module for the plural definitions from the latest CLDR aronacher parents: diff changeset	275 """
4d345ad621c2 Added pluralization support module for the plural definitions from the latest CLDR aronacher parents: diff changeset	276
4d345ad621c2 Added pluralization support module for the plural definitions from the latest CLDR aronacher parents: diff changeset	277 _rules = [
4d345ad621c2 Added pluralization support module for the plural definitions from the latest CLDR aronacher parents: diff changeset	278 (None, re.compile(r'\s+(?u)')),
4d345ad621c2 Added pluralization support module for the plural definitions from the latest CLDR aronacher parents: diff changeset	279 ('word', re.compile(r'\b(and\|or\|is\|(?:with)?in\|not\|mod\|n)\b')),
4d345ad621c2 Added pluralization support module for the plural definitions from the latest CLDR aronacher parents: diff changeset	280 ('value', re.compile(r'\d+')),
4d345ad621c2 Added pluralization support module for the plural definitions from the latest CLDR aronacher parents: diff changeset	281 ('ellipsis', re.compile(r'\.\.'))
4d345ad621c2 Added pluralization support module for the plural definitions from the latest CLDR aronacher parents: diff changeset	282 ]
4d345ad621c2 Added pluralization support module for the plural definitions from the latest CLDR aronacher parents: diff changeset	283
4d345ad621c2 Added pluralization support module for the plural definitions from the latest CLDR aronacher parents: diff changeset	284 def __init__(self, string):
390 ecf110e7f604 Preliminary support for timedelta formatting (see #126), and import/expose the locale plural rules from the CLDR. cmlenz parents: 387 diff changeset	285 string = string.lower()
386 4d345ad621c2 Added pluralization support module for the plural definitions from the latest CLDR aronacher parents: diff changeset	286 result = []
4d345ad621c2 Added pluralization support module for the plural definitions from the latest CLDR aronacher parents: diff changeset	287 pos = 0
4d345ad621c2 Added pluralization support module for the plural definitions from the latest CLDR aronacher parents: diff changeset	288 end = len(string)
4d345ad621c2 Added pluralization support module for the plural definitions from the latest CLDR aronacher parents: diff changeset	289 while pos < end:
4d345ad621c2 Added pluralization support module for the plural definitions from the latest CLDR aronacher parents: diff changeset	290 for tok, rule in self._rules:
4d345ad621c2 Added pluralization support module for the plural definitions from the latest CLDR aronacher parents: diff changeset	291 match = rule.match(string, pos)
4d345ad621c2 Added pluralization support module for the plural definitions from the latest CLDR aronacher parents: diff changeset	292 if match is not None:
4d345ad621c2 Added pluralization support module for the plural definitions from the latest CLDR aronacher parents: diff changeset	293 pos = match.end()
4d345ad621c2 Added pluralization support module for the plural definitions from the latest CLDR aronacher parents: diff changeset	294 if tok:
4d345ad621c2 Added pluralization support module for the plural definitions from the latest CLDR aronacher parents: diff changeset	295 result.append((tok, match.group()))
4d345ad621c2 Added pluralization support module for the plural definitions from the latest CLDR aronacher parents: diff changeset	296 break
4d345ad621c2 Added pluralization support module for the plural definitions from the latest CLDR aronacher parents: diff changeset	297 else:
4d345ad621c2 Added pluralization support module for the plural definitions from the latest CLDR aronacher parents: diff changeset	298 raise RuleError('malformed CLDR pluralization rule. '
4d345ad621c2 Added pluralization support module for the plural definitions from the latest CLDR aronacher parents: diff changeset	299 'Got unexpected %r' % string[pos])
4d345ad621c2 Added pluralization support module for the plural definitions from the latest CLDR aronacher parents: diff changeset	300 self.tokens = result[::-1]
4d345ad621c2 Added pluralization support module for the plural definitions from the latest CLDR aronacher parents: diff changeset	301
4d345ad621c2 Added pluralization support module for the plural definitions from the latest CLDR aronacher parents: diff changeset	302 self.ast = self.condition()
4d345ad621c2 Added pluralization support module for the plural definitions from the latest CLDR aronacher parents: diff changeset	303 if self.tokens:
4d345ad621c2 Added pluralization support module for the plural definitions from the latest CLDR aronacher parents: diff changeset	304 raise RuleError('Expected end of rule, got %r' %
4d345ad621c2 Added pluralization support module for the plural definitions from the latest CLDR aronacher parents: diff changeset	305 self.tokens[-1][1])
4d345ad621c2 Added pluralization support module for the plural definitions from the latest CLDR aronacher parents: diff changeset	306
4d345ad621c2 Added pluralization support module for the plural definitions from the latest CLDR aronacher parents: diff changeset	307 def test(self, type, value=None):
4d345ad621c2 Added pluralization support module for the plural definitions from the latest CLDR aronacher parents: diff changeset	308 return self.tokens and self.tokens[-1][0] == type and \
4d345ad621c2 Added pluralization support module for the plural definitions from the latest CLDR aronacher parents: diff changeset	309 (value is None or self.tokens[-1][1] == value)
4d345ad621c2 Added pluralization support module for the plural definitions from the latest CLDR aronacher parents: diff changeset	310
4d345ad621c2 Added pluralization support module for the plural definitions from the latest CLDR aronacher parents: diff changeset	311 def skip(self, type, value=None):
4d345ad621c2 Added pluralization support module for the plural definitions from the latest CLDR aronacher parents: diff changeset	312 if self.test(type, value):
4d345ad621c2 Added pluralization support module for the plural definitions from the latest CLDR aronacher parents: diff changeset	313 return self.tokens.pop()
4d345ad621c2 Added pluralization support module for the plural definitions from the latest CLDR aronacher parents: diff changeset	314
4d345ad621c2 Added pluralization support module for the plural definitions from the latest CLDR aronacher parents: diff changeset	315 def expect(self, type, value=None, term=None):
4d345ad621c2 Added pluralization support module for the plural definitions from the latest CLDR aronacher parents: diff changeset	316 token = self.skip(type, value)
4d345ad621c2 Added pluralization support module for the plural definitions from the latest CLDR aronacher parents: diff changeset	317 if token is not None:
4d345ad621c2 Added pluralization support module for the plural definitions from the latest CLDR aronacher parents: diff changeset	318 return token
4d345ad621c2 Added pluralization support module for the plural definitions from the latest CLDR aronacher parents: diff changeset	319 if term is None:
4d345ad621c2 Added pluralization support module for the plural definitions from the latest CLDR aronacher parents: diff changeset	320 term = repr(value is None and type or value)
4d345ad621c2 Added pluralization support module for the plural definitions from the latest CLDR aronacher parents: diff changeset	321 if not self.tokens:
4d345ad621c2 Added pluralization support module for the plural definitions from the latest CLDR aronacher parents: diff changeset	322 raise RuleError('expected %s but end of rule reached' % term)
4d345ad621c2 Added pluralization support module for the plural definitions from the latest CLDR aronacher parents: diff changeset	323 raise RuleError('expected %s but got %r' % (term, self.tokens[-1][1]))
4d345ad621c2 Added pluralization support module for the plural definitions from the latest CLDR aronacher parents: diff changeset	324
4d345ad621c2 Added pluralization support module for the plural definitions from the latest CLDR aronacher parents: diff changeset	325 def condition(self):
4d345ad621c2 Added pluralization support module for the plural definitions from the latest CLDR aronacher parents: diff changeset	326 op = self.and_condition()
4d345ad621c2 Added pluralization support module for the plural definitions from the latest CLDR aronacher parents: diff changeset	327 while self.skip('word', 'or'):
4d345ad621c2 Added pluralization support module for the plural definitions from the latest CLDR aronacher parents: diff changeset	328 op = 'or', (op, self.and_condition())
4d345ad621c2 Added pluralization support module for the plural definitions from the latest CLDR aronacher parents: diff changeset	329 return op
4d345ad621c2 Added pluralization support module for the plural definitions from the latest CLDR aronacher parents: diff changeset	330
4d345ad621c2 Added pluralization support module for the plural definitions from the latest CLDR aronacher parents: diff changeset	331 def and_condition(self):
4d345ad621c2 Added pluralization support module for the plural definitions from the latest CLDR aronacher parents: diff changeset	332 op = self.relation()
4d345ad621c2 Added pluralization support module for the plural definitions from the latest CLDR aronacher parents: diff changeset	333 while self.skip('word', 'and'):
390 ecf110e7f604 Preliminary support for timedelta formatting (see #126), and import/expose the locale plural rules from the CLDR. cmlenz parents: 387 diff changeset	334 op = 'and', (op, self.relation())
386 4d345ad621c2 Added pluralization support module for the plural definitions from the latest CLDR aronacher parents: diff changeset	335 return op
4d345ad621c2 Added pluralization support module for the plural definitions from the latest CLDR aronacher parents: diff changeset	336
4d345ad621c2 Added pluralization support module for the plural definitions from the latest CLDR aronacher parents: diff changeset	337 def relation(self):
4d345ad621c2 Added pluralization support module for the plural definitions from the latest CLDR aronacher parents: diff changeset	338 left = self.expr()
4d345ad621c2 Added pluralization support module for the plural definitions from the latest CLDR aronacher parents: diff changeset	339 if self.skip('word', 'is'):
4d345ad621c2 Added pluralization support module for the plural definitions from the latest CLDR aronacher parents: diff changeset	340 return self.skip('word', 'not') and 'isnot' or 'is', \
4d345ad621c2 Added pluralization support module for the plural definitions from the latest CLDR aronacher parents: diff changeset	341 (left, self.value())
4d345ad621c2 Added pluralization support module for the plural definitions from the latest CLDR aronacher parents: diff changeset	342 negated = self.skip('word', 'not')
4d345ad621c2 Added pluralization support module for the plural definitions from the latest CLDR aronacher parents: diff changeset	343 method = 'in'
4d345ad621c2 Added pluralization support module for the plural definitions from the latest CLDR aronacher parents: diff changeset	344 if self.skip('word', 'within'):
4d345ad621c2 Added pluralization support module for the plural definitions from the latest CLDR aronacher parents: diff changeset	345 method = 'within'
4d345ad621c2 Added pluralization support module for the plural definitions from the latest CLDR aronacher parents: diff changeset	346 else:
4d345ad621c2 Added pluralization support module for the plural definitions from the latest CLDR aronacher parents: diff changeset	347 self.expect('word', 'in', term="'within' or 'in'")
4d345ad621c2 Added pluralization support module for the plural definitions from the latest CLDR aronacher parents: diff changeset	348 rv = 'relation', (method, left, self.range())
4d345ad621c2 Added pluralization support module for the plural definitions from the latest CLDR aronacher parents: diff changeset	349 if negated:
4d345ad621c2 Added pluralization support module for the plural definitions from the latest CLDR aronacher parents: diff changeset	350 rv = 'not', (rv,)
4d345ad621c2 Added pluralization support module for the plural definitions from the latest CLDR aronacher parents: diff changeset	351 return rv
4d345ad621c2 Added pluralization support module for the plural definitions from the latest CLDR aronacher parents: diff changeset	352
4d345ad621c2 Added pluralization support module for the plural definitions from the latest CLDR aronacher parents: diff changeset	353 def range(self):
4d345ad621c2 Added pluralization support module for the plural definitions from the latest CLDR aronacher parents: diff changeset	354 left = self.value()
4d345ad621c2 Added pluralization support module for the plural definitions from the latest CLDR aronacher parents: diff changeset	355 self.expect('ellipsis')
4d345ad621c2 Added pluralization support module for the plural definitions from the latest CLDR aronacher parents: diff changeset	356 return 'range', (left, self.value())
4d345ad621c2 Added pluralization support module for the plural definitions from the latest CLDR aronacher parents: diff changeset	357
4d345ad621c2 Added pluralization support module for the plural definitions from the latest CLDR aronacher parents: diff changeset	358 def expr(self):
4d345ad621c2 Added pluralization support module for the plural definitions from the latest CLDR aronacher parents: diff changeset	359 self.expect('word', 'n')
4d345ad621c2 Added pluralization support module for the plural definitions from the latest CLDR aronacher parents: diff changeset	360 if self.skip('word', 'mod'):
391 3eb859adc5de Fixed a bug in plural.py that caused a traceback for some locales, changed the `__mod__` DateTimePattern to not raise exceptions but return NotImplemented. aronacher parents: 390 diff changeset	361 return 'mod', (('n', ()), self.value())
386 4d345ad621c2 Added pluralization support module for the plural definitions from the latest CLDR aronacher parents: diff changeset	362 return 'n', ()
4d345ad621c2 Added pluralization support module for the plural definitions from the latest CLDR aronacher parents: diff changeset	363
4d345ad621c2 Added pluralization support module for the plural definitions from the latest CLDR aronacher parents: diff changeset	364 def value(self):
4d345ad621c2 Added pluralization support module for the plural definitions from the latest CLDR aronacher parents: diff changeset	365 return 'value', (int(self.expect('value')[1]),)
4d345ad621c2 Added pluralization support module for the plural definitions from the latest CLDR aronacher parents: diff changeset	366
4d345ad621c2 Added pluralization support module for the plural definitions from the latest CLDR aronacher parents: diff changeset	367
387 2edbea56d2bd Some refactoring in plural.py aronacher parents: 386 diff changeset	368 def _binary_compiler(tmpl):
386 4d345ad621c2 Added pluralization support module for the plural definitions from the latest CLDR aronacher parents: diff changeset	369 """Compiler factory for the `_Compiler`."""
387 2edbea56d2bd Some refactoring in plural.py aronacher parents: 386 diff changeset	370 return lambda self, l, r: tmpl % (self.compile(l), self.compile(r))
386 4d345ad621c2 Added pluralization support module for the plural definitions from the latest CLDR aronacher parents: diff changeset	371
4d345ad621c2 Added pluralization support module for the plural definitions from the latest CLDR aronacher parents: diff changeset	372
392 2e77d72516d7 Fixed not in plural rules aronacher parents: 391 diff changeset	373 def _unary_compiler(tmpl):
2e77d72516d7 Fixed not in plural rules aronacher parents: 391 diff changeset	374 """Compiler factory for the `_Compiler`."""
2e77d72516d7 Fixed not in plural rules aronacher parents: 391 diff changeset	375 return lambda self, x: tmpl % self.compile(x)
2e77d72516d7 Fixed not in plural rules aronacher parents: 391 diff changeset	376
2e77d72516d7 Fixed not in plural rules aronacher parents: 391 diff changeset	377
386 4d345ad621c2 Added pluralization support module for the plural definitions from the latest CLDR aronacher parents: diff changeset	378 class _Compiler(object):
4d345ad621c2 Added pluralization support module for the plural definitions from the latest CLDR aronacher parents: diff changeset	379 """The compilers are able to transform the expressions into multiple
4d345ad621c2 Added pluralization support module for the plural definitions from the latest CLDR aronacher parents: diff changeset	380 output formats.
4d345ad621c2 Added pluralization support module for the plural definitions from the latest CLDR aronacher parents: diff changeset	381 """
4d345ad621c2 Added pluralization support module for the plural definitions from the latest CLDR aronacher parents: diff changeset	382
4d345ad621c2 Added pluralization support module for the plural definitions from the latest CLDR aronacher parents: diff changeset	383 def compile(self, (op, args)):
4d345ad621c2 Added pluralization support module for the plural definitions from the latest CLDR aronacher parents: diff changeset	384 return getattr(self, 'compile_' + op)(*args)
4d345ad621c2 Added pluralization support module for the plural definitions from the latest CLDR aronacher parents: diff changeset	385
4d345ad621c2 Added pluralization support module for the plural definitions from the latest CLDR aronacher parents: diff changeset	386 compile_n = lambda x: 'n'
4d345ad621c2 Added pluralization support module for the plural definitions from the latest CLDR aronacher parents: diff changeset	387 compile_value = lambda x, v: str(v)
387 2edbea56d2bd Some refactoring in plural.py aronacher parents: 386 diff changeset	388 compile_and = _binary_compiler('(%s && %s)')
2edbea56d2bd Some refactoring in plural.py aronacher parents: 386 diff changeset	389 compile_or = _binary_compiler('(%s \|\| %s)')
392 2e77d72516d7 Fixed not in plural rules aronacher parents: 391 diff changeset	390 compile_not = _unary_compiler('(!%s)')
387 2edbea56d2bd Some refactoring in plural.py aronacher parents: 386 diff changeset	391 compile_mod = _binary_compiler('(%s %% %s)')
2edbea56d2bd Some refactoring in plural.py aronacher parents: 386 diff changeset	392 compile_is = _binary_compiler('(%s == %s)')
2edbea56d2bd Some refactoring in plural.py aronacher parents: 386 diff changeset	393 compile_isnot = _binary_compiler('(%s != %s)')
386 4d345ad621c2 Added pluralization support module for the plural definitions from the latest CLDR aronacher parents: diff changeset	394
4d345ad621c2 Added pluralization support module for the plural definitions from the latest CLDR aronacher parents: diff changeset	395 def compile_relation(self, method, expr, range):
4d345ad621c2 Added pluralization support module for the plural definitions from the latest CLDR aronacher parents: diff changeset	396 range = '%s, %s' % tuple(map(self.compile, range[1]))
4d345ad621c2 Added pluralization support module for the plural definitions from the latest CLDR aronacher parents: diff changeset	397 return '%s(%s, %s)' % (method.upper(), self.compile(expr), range)
4d345ad621c2 Added pluralization support module for the plural definitions from the latest CLDR aronacher parents: diff changeset	398
4d345ad621c2 Added pluralization support module for the plural definitions from the latest CLDR aronacher parents: diff changeset	399
4d345ad621c2 Added pluralization support module for the plural definitions from the latest CLDR aronacher parents: diff changeset	400 class _PythonCompiler(_Compiler):
4d345ad621c2 Added pluralization support module for the plural definitions from the latest CLDR aronacher parents: diff changeset	401 """Compiles an expression to Python."""
387 2edbea56d2bd Some refactoring in plural.py aronacher parents: 386 diff changeset	402
2edbea56d2bd Some refactoring in plural.py aronacher parents: 386 diff changeset	403 compile_and = _binary_compiler('(%s and %s)')
2edbea56d2bd Some refactoring in plural.py aronacher parents: 386 diff changeset	404 compile_or = _binary_compiler('(%s or %s)')
392 2e77d72516d7 Fixed not in plural rules aronacher parents: 391 diff changeset	405 compile_not = _unary_compiler('(not %s)')
387 2edbea56d2bd Some refactoring in plural.py aronacher parents: 386 diff changeset	406 compile_mod = _binary_compiler('MOD(%s, %s)')
386 4d345ad621c2 Added pluralization support module for the plural definitions from the latest CLDR aronacher parents: diff changeset	407
4d345ad621c2 Added pluralization support module for the plural definitions from the latest CLDR aronacher parents: diff changeset	408
4d345ad621c2 Added pluralization support module for the plural definitions from the latest CLDR aronacher parents: diff changeset	409 class _GettextCompiler(_Compiler):
4d345ad621c2 Added pluralization support module for the plural definitions from the latest CLDR aronacher parents: diff changeset	410 """Compile into a gettext plural expression."""
4d345ad621c2 Added pluralization support module for the plural definitions from the latest CLDR aronacher parents: diff changeset	411
4d345ad621c2 Added pluralization support module for the plural definitions from the latest CLDR aronacher parents: diff changeset	412 def compile_relation(self, method, expr, range):
4d345ad621c2 Added pluralization support module for the plural definitions from the latest CLDR aronacher parents: diff changeset	413 expr = self.compile(expr)
4d345ad621c2 Added pluralization support module for the plural definitions from the latest CLDR aronacher parents: diff changeset	414 min, max = map(self.compile, range[1])
4d345ad621c2 Added pluralization support module for the plural definitions from the latest CLDR aronacher parents: diff changeset	415 return '(%s >= %s && %s <= %s)' % (expr, min, expr, max)
4d345ad621c2 Added pluralization support module for the plural definitions from the latest CLDR aronacher parents: diff changeset	416
4d345ad621c2 Added pluralization support module for the plural definitions from the latest CLDR aronacher parents: diff changeset	417
4d345ad621c2 Added pluralization support module for the plural definitions from the latest CLDR aronacher parents: diff changeset	418 class _JavaScriptCompiler(_GettextCompiler):
4d345ad621c2 Added pluralization support module for the plural definitions from the latest CLDR aronacher parents: diff changeset	419 """Compiles the expression to plain of JavaScript."""
4d345ad621c2 Added pluralization support module for the plural definitions from the latest CLDR aronacher parents: diff changeset	420
4d345ad621c2 Added pluralization support module for the plural definitions from the latest CLDR aronacher parents: diff changeset	421 def compile_relation(self, method, expr, range):
4d345ad621c2 Added pluralization support module for the plural definitions from the latest CLDR aronacher parents: diff changeset	422 code = _GettextCompiler.compile_relation(self, method, expr, range)
4d345ad621c2 Added pluralization support module for the plural definitions from the latest CLDR aronacher parents: diff changeset	423 if method == 'in':
4d345ad621c2 Added pluralization support module for the plural definitions from the latest CLDR aronacher parents: diff changeset	424 expr = self.compile(expr)
4d345ad621c2 Added pluralization support module for the plural definitions from the latest CLDR aronacher parents: diff changeset	425 code = '(parseInt(%s) == %s && %s)' % (expr, expr, code)
4d345ad621c2 Added pluralization support module for the plural definitions from the latest CLDR aronacher parents: diff changeset	426 return code
4d345ad621c2 Added pluralization support module for the plural definitions from the latest CLDR aronacher parents: diff changeset	427
4d345ad621c2 Added pluralization support module for the plural definitions from the latest CLDR aronacher parents: diff changeset	428
4d345ad621c2 Added pluralization support module for the plural definitions from the latest CLDR aronacher parents: diff changeset	429 class _UnicodeCompiler(_Compiler):
4d345ad621c2 Added pluralization support module for the plural definitions from the latest CLDR aronacher parents: diff changeset	430 """Returns a unicode pluralization rule again."""
387 2edbea56d2bd Some refactoring in plural.py aronacher parents: 386 diff changeset	431
2edbea56d2bd Some refactoring in plural.py aronacher parents: 386 diff changeset	432 compile_is = _binary_compiler('%s is %s')
2edbea56d2bd Some refactoring in plural.py aronacher parents: 386 diff changeset	433 compile_isnot = _binary_compiler('%s is not %s')
2edbea56d2bd Some refactoring in plural.py aronacher parents: 386 diff changeset	434 compile_and = _binary_compiler('%s and %s')
2edbea56d2bd Some refactoring in plural.py aronacher parents: 386 diff changeset	435 compile_or = _binary_compiler('%s or %s')
2edbea56d2bd Some refactoring in plural.py aronacher parents: 386 diff changeset	436 compile_mod = _binary_compiler('%s mod %s')
386 4d345ad621c2 Added pluralization support module for the plural definitions from the latest CLDR aronacher parents: diff changeset	437
4d345ad621c2 Added pluralization support module for the plural definitions from the latest CLDR aronacher parents: diff changeset	438 def compile_not(self, relation):
4d345ad621c2 Added pluralization support module for the plural definitions from the latest CLDR aronacher parents: diff changeset	439 return self.compile_relation(negated=True, *relation[1])
4d345ad621c2 Added pluralization support module for the plural definitions from the latest CLDR aronacher parents: diff changeset	440
4d345ad621c2 Added pluralization support module for the plural definitions from the latest CLDR aronacher parents: diff changeset	441 def compile_relation(self, method, expr, range, negated=False):
4d345ad621c2 Added pluralization support module for the plural definitions from the latest CLDR aronacher parents: diff changeset	442 return '%s%s %s %s' % (
4d345ad621c2 Added pluralization support module for the plural definitions from the latest CLDR aronacher parents: diff changeset	443 self.compile(expr), negated and ' not' or '',
4d345ad621c2 Added pluralization support module for the plural definitions from the latest CLDR aronacher parents: diff changeset	444 method, '%s..%s' % tuple(map(self.compile, range[1]))
4d345ad621c2 Added pluralization support module for the plural definitions from the latest CLDR aronacher parents: diff changeset	445 )

Mercurial > babel > old > babel-test

annotate babel/plural.py @ 530:85e1beadacb0