Issue 5763 - Target languages supported by Firefox

localeTools.py

 # 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/.
 
 import re
 import os
 import sys
 import codecs
 import json
 import urlparse
 import urllib
 import urllib2
 import mimetypes
 from StringIO import StringIO
 from ConfigParser import SafeConfigParser
 from zipfile import ZipFile
 from xml.parsers.expat import ParserCreate, XML_PARAM_ENTITY_PARSING_ALWAYS
 
-langMappingGecko = {
-    'bn-BD': 'bn',
+CROWDIN_LANG_MAPPING = {
     'br': 'br-FR',
     'dsb': 'dsb-DE',
-    'fj-FJ': 'fj',
+    'es': 'es-ES',
+    'fur': 'fur-IT',
+    'fy': 'fy-NL',
+    'ga': 'ga-IE',
+    'gu': 'gu-IN',
     'hsb': 'hsb-DE',
-    'hi-IN': 'hi',
+    'hy': 'hy-AM',
     'ml': 'ml-IN',
-    'nb-NO': 'nb',
+    'nn': 'nn-NO',
+    'pa': 'pa-IN',
     'rm': 'rm-CH',
-    'ta-LK': 'ta',
-    'wo-SN': 'wo',
+    'si': 'si-LK',
+    'sv': 'sv-SE',
+    'ur': 'ur-PK',
 }
 
-langMappingChrome = {
-    'es-419': 'es-MX',
-    'es': 'es-ES',
-    'sv': 'sv-SE',
-    'ml': 'ml-IN',
-    'gu': 'gu-IN',
-}
-
-chromeLocales = [
-    'am',
-    'ar',
-    'bg',
-    'bn',
-    'ca',
-    'cs',
-    'da',
-    'de',
-    'el',
-    'en-GB',
-    'en-US',
-    'es-419',
-    'es',
-    'et',
-    'fa',
-    'fi',
-    'fil',
-    'fr',
-    'gu',
-    'he',
-    'hi',
-    'hr',
-    'hu',
-    'id',
-    'it',
-    'ja',
-    'kn',
-    'ko',
-    'lt',
-    'lv',
-    'ml',
-    'mr',
-    'ms',
-    'nb',
-    'nl',
-    'pl',
-    'pt-BR',
-    'pt-PT',
-    'ro',
-    'ru',
-    'sk',
-    'sl',
-    'sr',
-    'sv',
-    'sw',
-    'ta',
-    'te',
-    'th',
-    'tr',
-    'uk',
-    'vi',
-    'zh-CN',
-    'zh-TW',
-]
-
 CROWDIN_AP_URL = 'https://api.crowdin.com/api/project'
+FIREFOX_RELEASES_URL = 'http://www.mozilla.org/en-US/firefox/all.html'
+FIREFOX_LP_URL = 'https://addons.mozilla.org/en-US/firefox/language-tools/'
+CHROMIUM_DEB_URL = 'https://packages.debian.org/sid/all/chromium-l10n/filelist'
 
 
 def crowdin_request(project_name, action, key, get={}, post_data=None,
                     headers={}, raw=False):
     """Perform a call to crowdin and raise an Exception on failure."""
     request = urllib2.Request(
         '{}/{}/{}?{}'.format(CROWDIN_AP_URL,
                              urllib.quote(project_name),
                              urllib.quote(action),
                              urllib.urlencode(dict(get, key=key, json=1))),
@@ skipping 30 matching lines @@
 
 
 def escapeEntity(value):
     return value.replace('&', '&amp;').replace('<', '&lt;').replace('>', '&gt;').replace('"', '&quot;')
 
 
 def unescapeEntity(value):
     return value.replace('&amp;', '&').replace('&lt;', '<').replace('&gt;', '>').replace('&quot;', '"')
 
 
-def mapLocale(type, locale):
-    mapping = langMappingChrome if type == 'ISO-15897' else langMappingGecko
-    return mapping.get(locale, locale)
-
-
 def parseDTDString(data, path):
     result = []
     currentComment = [None]
 
     parser = ParserCreate()
     parser.UseForeignDTD(True)
     parser.SetParamEntityParsing(XML_PARAM_ENTITY_PARSING_ALWAYS)
 
     def ExternalEntityRefHandler(context, base, systemId, publicId):
         subparser = parser.ExternalEntityParserCreate(context, 'utf-8')
@@ skipping 134 matching lines @@
     for key, value in parsed.iteritems():
         if 'description' in value:
             del value['description']
 
     file = codecs.open(path, 'wb', encoding='utf-8')
     json.dump(parsed, file, ensure_ascii=False, sort_keys=True, indent=2, separators=(',', ': '))
     file.close()
 
 
 def setupTranslations(localeConfig, projectName, key):
-    # Make a new set from the locales list, mapping to Crowdin friendly format
-    locales = {mapLocale(localeConfig['name_format'], locale)
-               for locale in localeConfig['locales']}
+    locales = set()
 
-    # Fill up with locales that we don't have but the browser supports
-    if 'chrome' in localeConfig['target_platforms']:
-        for locale in chromeLocales:
-            locales.add(mapLocale('ISO-15897', locale))
+    # Languages supported by Firefox
+    data = urllib2.urlopen(FIREFOX_RELEASES_URL).read()
+    for match in re.finditer(r'&amp;lang=([\w\-]+)"', data):
+        locales.add(match.group(1))
 
-    if 'gecko' in localeConfig['target_platforms']:
-        firefoxLocales = urllib2.urlopen('http://www.mozilla.org/en-US/firefox/all.html').read()
-        for match in re.finditer(r'&amp;lang=([\w\-]+)"', firefoxLocales):
-            locales.add(mapLocale('BCP-47', match.group(1)))
-        langPacks = urllib2.urlopen('https://addons.mozilla.org/en-US/firefox/language-tools/').read()
-        for match in re.finditer(r'<tr>.*?</tr>', langPacks, re.S):
-            if match.group(0).find('Install Language Pack') >= 0:
-                match2 = re.search(r'lang="([\w\-]+)"', match.group(0))
-                if match2:
-                    locales.add(mapLocale('BCP-47', match2.group(1)))
+    # Languages supported by Firefox Language Packs
+    data = urllib2.urlopen(FIREFOX_LP_URL).read()
+    for match in re.finditer(r'<tr>.*?</tr>', data, re.S):
+        if match.group(0).find('Install Language Pack') >= 0:
+            match2 = re.search(r'lang="([\w\-]+)"', match.group(0))
+            if match2:
+                locales.add(match2.group(1))
 
-    allowed = set()
-    allowedLocales = crowdin_request(projectName, 'supported-languages', key)
+    # Languages supported by Chrome (excluding es-419)
+    data = urllib2.urlopen(CHROMIUM_DEB_URL).read()
+    for match in re.finditer(r'locales/(?!es-419)([\w\-]+)\.pak', data):
+        locales.add(match.group(1))
 
-    for locale in allowedLocales:
-        allowed.add(locale['crowdin_code'])
+    # We don't translate indvidual dialects of languages
+    # other than English, Spanish, Portuguese and Chinese.
+    for locale in list(locales):
+        prefix = locale.split('-')[0]
+        if prefix not in {'en', 'es', 'pt', 'zh'}:
+            locales.remove(locale)
+            locales.add(prefix)
+
+    # Add languages with existing translations.
+    locales.update(localeConfig['locales'])
+
+    # Don't add the language we translate from as target translation.
+    locales.remove(localeConfig['default_locale'].replace('_', '-'))
+
+    # Convert to locales understood by Crowdin.
+    locales = {CROWDIN_LANG_MAPPING.get(locale, locale) for locale in locales}
+    allowed = {locale['crowdin_code'] for locale in
+               crowdin_request(projectName, 'supported-languages', key)}
     if not allowed.issuperset(locales):
         print "Warning, following locales aren't allowed by server: " + ', '.join(locales - allowed)
 
-    locales = list(locales & allowed)
-    locales.sort()
+    locales = sorted(locales & allowed)
     params = urllib.urlencode([('languages[]', locale) for locale in locales])
-
     crowdin_request(projectName, 'edit-project', key, post_data=params)
 
 
 def crowdin_prepare_upload(files):
     """Create a post body and matching headers, which Crowdin can handle."""
     boundary = '----------ThIs_Is_tHe_bouNdaRY_$'
     body = ''
     for name, data in files:
         body += (
             '--{boundary}\r\n'
@@ skipping 73 matching lines @@
                 data = json.dumps({file: {'message': fileHandle.read()}})
                 fileHandle.close()
                 newName = file + '.json'
             else:
                 data = toJSON(path)
                 newName = file + '.json'
 
             if data:
                 files.append((newName, data))
     if len(files):
-        language = mapLocale(localeConfig['name_format'], locale)
+        language = CROWDIN_LANG_MAPPING.get(locale, locale)
         data, headers = crowdin_prepare_upload(files)
         crowdin_request(projectName, 'upload-translation', key,
                         {'language': language}, post_data=data,
                         headers=headers)
 
 
 def getTranslations(localeConfig, projectName, key):
     """Download all available translations from crowdin.
 
     Trigger crowdin to build the available export, wait for crowdin to
     finish the job and download the generated zip afterwards.
     """
     crowdin_request(projectName, 'export', key)
 
     result = crowdin_request(projectName, 'download/all.zip', key, raw=True)
     zip = ZipFile(StringIO(result))
     dirs = {}
 
     normalizedDefaultLocale = localeConfig['default_locale']
     if localeConfig['name_format'] == 'ISO-15897':
         normalizedDefaultLocale = normalizedDefaultLocale.replace('_', '-')
-    normalizedDefaultLocale = mapLocale(localeConfig['name_format'],
-                                        normalizedDefaultLocale)
+    normalizedDefaultLocale = CROWDIN_LANG_MAPPING.get(normalizedDefaultLocale,
+                                                       normalizedDefaultLocale)
 
     for info in zip.infolist():
         if not info.filename.endswith('.json'):
             continue
 
         dir, file = os.path.split(info.filename)
         if not re.match(r'^[\w\-]+$', dir) or dir == normalizedDefaultLocale:
             continue
         if localeConfig['file_format'] == 'chrome-json' and file.count('.') == 1:
             origFile = file
         else:
             origFile = re.sub(r'\.json$', '', file)
         if (localeConfig['file_format'] == 'gecko-dtd' and
             not origFile.endswith('.dtd') and
             not origFile.endswith('.properties')):
             continue
 
-        if localeConfig['name_format'] == 'ISO-15897':
-            mapping = langMappingChrome
-        else:
-            mapping = langMappingGecko
-
-        for key, value in mapping.iteritems():
+        for key, value in CROWDIN_LANG_MAPPING.iteritems():
             if value == dir:
                 dir = key
         if localeConfig['name_format'] == 'ISO-15897':
             dir = dir.replace('-', '_')
 
         data = zip.open(info.filename).read()
         if data == '[]':
             continue
 
         if not dir in dirs:
@@ skipping 16 matching lines @@
 
     # Remove any extra files
     for dir, files in dirs.iteritems():
         baseDir = os.path.join(localeConfig['base_path'], dir)
         if not os.path.exists(baseDir):
             continue
         for file in os.listdir(baseDir):
             path = os.path.join(baseDir, file)
             if os.path.isfile(path) and (file.endswith('.json') or file.endswith('.properties') or file.endswith('.dtd')) and not file in files:
                 os.remove(path)