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@@ -2,83 +2,40 @@
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# This script generates languages.py from intersecting each engine's supported languages.
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#
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-# The country names are obtained from http://api.geonames.org which requires registering as a user.
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-#
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# Output files (engines_languages.json and languages.py)
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# are written in current directory to avoid overwriting in case something goes wrong.
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-from requests import get
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-from lxml.html import fromstring
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-from json import loads, dump
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+from json import dump
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import io
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from sys import path
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+from babel import Locale, UnknownLocaleError
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+from babel.languages import get_global
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+
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path.append('../searx') # noqa
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from searx import settings
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-from searx.url_utils import urlencode
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from searx.engines import initialize_engines, engines
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-# Geonames API for country names.
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-geonames_user = '' # ADD USER NAME HERE
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-country_names_url = 'http://api.geonames.org/countryInfoJSON?{parameters}'
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-
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# Output files.
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engines_languages_file = 'engines_languages.json'
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languages_file = 'languages.py'
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-engines_languages = {}
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-
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-
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-# To filter out invalid codes and dialects.
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-def valid_code(lang_code):
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- # filter invalid codes
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- # sl-SL is technically not invalid, but still a mistake
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- invalid_codes = ['sl-SL', 'wt-WT', 'jw']
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- invalid_countries = ['UK', 'XA', 'XL']
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- if lang_code[:2] == 'xx'\
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- or lang_code in invalid_codes\
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- or lang_code[-2:] in invalid_countries\
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- or is_dialect(lang_code):
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- return False
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-
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- return True
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-
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-
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-# Language codes with any additional tags other than language and country.
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-def is_dialect(lang_code):
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- lang_code = lang_code.split('-')
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- if len(lang_code) > 2 or len(lang_code[0]) > 3:
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- return True
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- if len(lang_code) == 2 and len(lang_code[1]) > 2:
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- return True
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-
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- return False
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-
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-
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-# Get country name in specified language.
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-def get_country_name(locale):
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- if geonames_user is '':
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- return ''
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-
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- locale = locale.split('-')
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- if len(locale) != 2:
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- return ''
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-
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- url = country_names_url.format(parameters=urlencode({'lang': locale[0],
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- 'country': locale[1],
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- 'username': geonames_user}))
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- response = get(url)
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- json = loads(response.text)
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- content = json.get('geonames', None)
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- if content is None or len(content) != 1:
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- print("No country name found for " + locale[0] + "-" + locale[1])
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- return ''
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-
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- return content[0].get('countryName', '')
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+# custom fixes for non standard locale codes
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+# sl-SL is technically not invalid, but still a mistake
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+# TODO: move to respective engines
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+locale_fixes = {
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+ 'sl-sl': 'sl-SI',
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+ 'ar-xa': 'ar-SA',
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+ 'es-xl': 'es-419',
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+ 'zh-chs': 'zh-Hans-CN',
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+ 'zh-cht': 'zh-Hant-TW',
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+ 'tzh-tw': 'zh-Hant-TW',
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+ 'tzh-hk': 'zh-Hant-HK'
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+}
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# Fetchs supported languages for each engine and writes json file with those.
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def fetch_supported_languages():
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- initialize_engines(settings['engines'])
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+ engines_languages = {}
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for engine_name in engines:
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if hasattr(engines[engine_name], 'fetch_supported_languages'):
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try:
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@@ -90,81 +47,134 @@ def fetch_supported_languages():
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with io.open(engines_languages_file, "w", encoding="utf-8") as f:
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dump(engines_languages, f, ensure_ascii=False)
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+ return engines_languages
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+
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+
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+# Get babel Locale object from lang_code if possible.
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+def get_locale(lang_code):
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+ try:
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+ locale = Locale.parse(lang_code, sep='-')
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+ return locale
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+ except (UnknownLocaleError, ValueError):
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+ return None
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+
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+
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+# Append engine_name to list of engines that support locale.
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+def add_engine_counter(lang_code, engine_name, languages):
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+ if lang_code in languages:
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+ if 'counter' not in languages[lang_code]:
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+ languages[lang_code]['counter'] = [engine_name]
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+ elif engine_name not in languages[lang_code]['counter']:
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+ languages[lang_code]['counter'].append(engine_name)
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-# Join all language lists.
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-# Iterate all languages supported by each engine.
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-def join_language_lists():
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- global languages
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- # include wikipedia first for more accurate language names
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- languages = {code: lang for code, lang
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- in engines_languages['wikipedia'].items()
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- if valid_code(code)}
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+# Join all language lists.
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+# TODO: Add language names from engine's language list if name not known by babel.
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+def join_language_lists(engines_languages):
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+ language_list = {}
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for engine_name in engines_languages:
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- for locale in engines_languages[engine_name]:
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- if valid_code(locale):
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- # if language is not on list or if it has no name yet
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- if locale not in languages or not languages[locale].get('name'):
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- if isinstance(engines_languages[engine_name], dict):
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- languages[locale] = engines_languages[engine_name][locale]
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- else:
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- languages[locale] = {}
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-
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- # add to counter of engines that support given language
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- lang = locale.split('-')[0]
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- if lang in languages:
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- if 'counter' not in languages[lang]:
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- languages[lang]['counter'] = [engine_name]
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- elif engine_name not in languages[lang]['counter']:
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- languages[lang]['counter'].append(engine_name)
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-
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- # filter list to include only languages supported by most engines
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- min_supported_engines = int(0.70 * len(engines_languages))
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- languages = {code: lang for code, lang
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- in languages.items()
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- if len(lang.get('counter', [])) >= min_supported_engines or
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- len(languages.get(code.split('-')[0], {}).get('counter', [])) >= min_supported_engines}
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-
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- # get locales that have no name or country yet
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- for locale in languages.keys():
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- # try to get language names
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- if not languages[locale].get('name'):
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- name = languages.get(locale.split('-')[0], {}).get('name', None)
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- if name:
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- languages[locale]['name'] = name
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- else:
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- # filter out locales with no name
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- del languages[locale]
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- continue
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-
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- # try to get language name in english
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- if not languages[locale].get('english_name'):
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- languages[locale]['english_name'] = languages.get(locale.split('-')[0], {}).get('english_name', '')
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-
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- # try to get country name
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- if locale.find('-') > 0 and not languages[locale].get('country'):
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- languages[locale]['country'] = get_country_name(locale) or ''
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-
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-
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-# Remove countryless language if language is featured in only one country.
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-def filter_single_country_languages():
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- prev_lang = None
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- prev_code = None
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- for code in sorted(languages):
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- lang = code.split('-')[0]
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- if lang == prev_lang:
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+ for lang_code in engines_languages[engine_name]:
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+
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+ # apply custom fixes if necessary
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+ if lang_code.lower() in locale_fixes:
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+ lang_code = locale_fixes[lang_code.lower()]
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+
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+ locale = get_locale(lang_code)
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+
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+ # ensure that lang_code uses standard language and country codes
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+ if locale and locale.territory:
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+ lang_code = locale.language + '-' + locale.territory
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+
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+ # add locale if it's not in list
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+ if lang_code not in language_list:
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+ if locale:
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+ language_list[lang_code] = {'name': locale.get_language_name().title(),
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+ 'english_name': locale.english_name,
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+ 'country': locale.get_territory_name() or ''}
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+
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+ # also add language without country
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+ if locale.language not in language_list:
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+ language_list[locale.language] = {'name': locale.get_language_name().title(),
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+ 'english_name': locale.english_name}
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+ else:
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+ language_list[lang_code] = {}
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+
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+ # count engine for both language_country combination and language alone
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+ add_engine_counter(lang_code, engine_name, language_list)
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+ add_engine_counter(lang_code.split('-')[0], engine_name, language_list)
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+
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+ return language_list
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+
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+
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+# Filter language list so it only includes the most supported languages and countries.
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+def filter_language_list(all_languages):
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+ min_supported_engines = 10
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+ main_engines = [engine_name for engine_name in engines.keys()
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+ if 'general' in engines[engine_name].categories and
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+ engines[engine_name].supported_languages and
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+ not engines[engine_name].disabled]
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+
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+ # filter list to include only languages supported by most engines or all default general engines
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+ filtered_languages = {code: lang for code, lang
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+ in all_languages.items()
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+ if (len(lang.get('counter', [])) >= min_supported_engines or
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+ all(main_engine in lang.get('counter', [])
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+ for main_engine in main_engines))}
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+
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+ return filtered_languages
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+
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+
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+# Add country codes to languages without one and filter out language codes.
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+def assign_country_codes(filtered_languages, all_languages):
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+ sorted_languages = sorted(all_languages,
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+ key=lambda lang: len(all_languages[lang].get('counter', [])),
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+ reverse=True)
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+ previous_lang = None
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+ previous_code = None
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+ countries = 0
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+ for current_code in sorted(filtered_languages):
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+ current_lang = current_code.split('-')[0]
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+
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+ # count country codes per language
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+ if current_lang == previous_lang:
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countries += 1
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+
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else:
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- if prev_lang is not None and countries == 1:
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- del languages[prev_lang]
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- languages[prev_code]['country'] = ''
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+ if previous_lang is not None:
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+ # if language has no single country code
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+ if countries == 0:
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+ # try to get country code with most supported engines
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+ for l in sorted_languages:
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+ l_parts = l.split('-')
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+ if len(l_parts) == 2 and l_parts[0] == previous_lang:
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+ filtered_languages[l] = all_languages[l]
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+ filtered_languages[l]['country'] = ''
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+ countries = 1
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+ break
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+
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+ if countries == 0:
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+ # get most likely country code from babel
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+ subtags = get_global('likely_subtags').get(previous_lang)
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+ if subtags:
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+ subtag_parts = subtags.split('_')
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+ new_code = subtag_parts[0] + '-' + subtag_parts[-1]
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+ filtered_languages[new_code] = all_languages[previous_lang]
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+ countries = 1
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+
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+ if countries == 1:
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+ # remove countryless version of language if there's only one country
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+ del filtered_languages[previous_lang]
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+ if previous_code in filtered_languages:
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+ filtered_languages[previous_code]['country'] = ''
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+
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countries = 0
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- prev_lang = lang
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- prev_code = code
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+ previous_lang = current_lang
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+
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+ previous_code = current_code
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# Write languages.py.
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-def write_languages_file():
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+def write_languages_file(languages):
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new_file = open(languages_file, 'wb')
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file_content = '# -*- coding: utf-8 -*-\n'\
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+ '# list of language codes\n'\
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@@ -183,7 +193,9 @@ def write_languages_file():
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if __name__ == "__main__":
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- fetch_supported_languages()
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- join_language_lists()
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- filter_single_country_languages()
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- write_languages_file()
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+ initialize_engines(settings['engines'])
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+ engines_languages = fetch_supported_languages()
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+ all_languages = join_language_lists(engines_languages)
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+ filtered_languages = filter_language_list(all_languages)
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+ assign_country_codes(filtered_languages, all_languages)
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+ write_languages_file(filtered_languages)
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Marc Abonce Seguin