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Diffstat (limited to 'addon-sdk/source/python-lib/plural-rules-generator.py')
| -rw-r--r-- | addon-sdk/source/python-lib/plural-rules-generator.py | 185 |
1 files changed, 0 insertions, 185 deletions
diff --git a/addon-sdk/source/python-lib/plural-rules-generator.py b/addon-sdk/source/python-lib/plural-rules-generator.py deleted file mode 100644 index 02cdee135..000000000 --- a/addon-sdk/source/python-lib/plural-rules-generator.py +++ /dev/null @@ -1,185 +0,0 @@ -# This Source Code Form is subject to the terms of the Mozilla Public -# License, v. 2.0. If a copy of the MPL was not distributed with this -# file, You can obtain one at http://mozilla.org/MPL/2.0/. - -# Program used to generate /packages/api-utils/lib/l10n/plural-rules.js -# Fetch unicode.org data in order to build functions specific to each language -# that will return for a given integer, its plural form name. -# Plural form names are: zero, one, two, few, many, other. -# -# More information here: -# http://unicode.org/repos/cldr-tmp/trunk/diff/supplemental/language_plural_rules.html -# http://cldr.unicode.org/index/cldr-spec/plural-rules - -# Usage: -# $ python plural-rules-generator.py > ../packages/api-utils/lib/l10n/plural-rules.js - -import urllib2 -import xml.dom.minidom -import json -import re - -PRINT_CONDITIONS_IN_COMMENTS = False - -UNICODE_ORG_XML_URL = "http://unicode.org/repos/cldr/trunk/common/supplemental/plurals.xml" - -CONDITION_RE = r'n( mod \d+)? (is|in|within|(not in))( not)? ([^\s]+)' - - -def parseCondition(g): - """ - For a given regexp.MatchObject `g` for `CONDITION_RE`, - returns the equivalent JS piece of code - i.e. maps pseudo conditional language from unicode.org XML to JS code - """ - lvalue = "n" - if g.group(1): - lvalue = "(n %% %d)" % int(g.group(1).replace("mod ", "")) - - operator = g.group(2) - if g.group(4): - operator += " not" - - rvalue = g.group(5) - - if operator == "is": - return "%s == %s" % (lvalue, rvalue) - if operator == "is not": - return "%s != %s" % (lvalue, rvalue) - - # "in", "within" or "not in" case: - notPrefix = "" - if operator == "not in": - notPrefix = "!" - - # `rvalue` is a comma seperated list of either: - # - numbers: 42 - # - ranges: 42..72 - sections = rvalue.split(',') - - if ".." not in rvalue: - # If we don't have range, but only a list of integer, - # we can simplify the generated code by using `isIn` - # n in 1,3,6,42 - return "%sisIn(%s, [%s])" % (notPrefix, lvalue, ", ".join(sections)) - - # n in 1..42 - # n in 1..3,42 - subCondition = [] - integers = [] - for sub in sections: - if ".." in sub: - left, right = sub.split("..") - subCondition.append("isBetween(%s, %d, %d)" % ( - lvalue, - int(left), - int(right) - )) - else: - integers.append(int(sub)) - if len(integers) > 1: - subCondition.append("isIn(%s, [%s])" % (lvalue, ", ".join(integers))) - elif len(integers) == 1: - subCondition.append("(%s == %s)" % (lvalue, integers[0])) - return "%s(%s)" % (notPrefix, " || ".join(subCondition)) - -def computeRules(): - """ - Fetch plural rules data directly from unicode.org website: - """ - url = UNICODE_ORG_XML_URL - f = urllib2.urlopen(url) - doc = xml.dom.minidom.parse(f) - - # Read XML document and extract locale to rules mapping - localesMapping = {} - algorithms = {} - for index,pluralRules in enumerate(doc.getElementsByTagName("pluralRules")): - if not index in algorithms: - algorithms[index] = {} - for locale in pluralRules.getAttribute("locales").split(): - localesMapping[locale] = index - for rule in pluralRules.childNodes: - if rule.nodeType != rule.ELEMENT_NODE or rule.tagName != "pluralRule": - continue - pluralForm = rule.getAttribute("count") - algorithm = rule.firstChild.nodeValue - algorithms[index][pluralForm] = algorithm - - # Go through all rules and compute a Javascript code for each of them - rules = {} - for index,rule in algorithms.iteritems(): - lines = [] - for pluralForm in rule: - condition = rule[pluralForm] - originalCondition = str(condition) - - # Convert pseudo language to JS code - condition = rule[pluralForm].lower() - condition = re.sub(CONDITION_RE, parseCondition, condition) - condition = re.sub(r'or', "||", condition) - condition = re.sub(r'and', "&&", condition) - - # Prints original condition in unicode.org pseudo language - if PRINT_CONDITIONS_IN_COMMENTS: - lines.append( '// %s' % originalCondition ) - - lines.append( 'if (%s)' % condition ) - lines.append( ' return "%s";' % pluralForm ) - - rules[index] = "\n ".join(lines) - return localesMapping, rules - - -localesMapping, rules = computeRules() - -rulesLines = [] -for index in rules: - lines = rules[index] - rulesLines.append('"%d": function (n) {' % index) - rulesLines.append(' %s' % lines) - rulesLines.append(' return "other"') - rulesLines.append('},') - -print """/* This Source Code Form is subject to the terms of the Mozilla Public - * License, v. 2.0. If a copy of the MPL was not distributed with this - * file, You can obtain one at http://mozilla.org/MPL/2.0/. */ - -// This file is automatically generated with /python-lib/plural-rules-generator.py -// Fetching data from: %s - -// Mapping of short locale name == to == > rule index in following list -const LOCALES_TO_RULES = %s; - -// Utility functions for plural rules methods -function isIn(n, list) { - return list.indexOf(n) !== -1; -} -function isBetween(n, start, end) { - return start <= n && n <= end; -} - -// List of all plural rules methods, that maps an integer to the plural form name to use -const RULES = { - %s -}; - -/** - * Return a function that gives the plural form name for a given integer - * for the specified `locale` - * let fun = getRulesForLocale('en'); - * fun(1) -> 'one' - * fun(0) -> 'other' - * fun(1000) -> 'other' - */ -exports.getRulesForLocale = function getRulesForLocale(locale) { - let index = LOCALES_TO_RULES[locale]; - if (!(index in RULES)) { - console.warn('Plural form unknown for locale "' + locale + '"'); - return function () { return "other"; }; - } - return RULES[index]; -} -""" % (UNICODE_ORG_XML_URL, - json.dumps(localesMapping, sort_keys=True, indent=2), - "\n ".join(rulesLines)) |