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# -*- coding: utf-8 -*-
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# This script generates languages.py from
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# intersecting each engine's supported languages.
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#
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# The language's native names are obtained from
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# Wikipedia and Google's supported languages.
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#
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# The country names are obtained from http://api.geonames.org
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# which requires registering as a user.
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#
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# Output file (languages.py) is written in current directory
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# to avoid overwriting in case something goes wrong.
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from requests import get
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from urllib import urlencode
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from lxml.html import fromstring
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from json import loads
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from sys import path
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path.append('../searx')
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from searx.engines import engines
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# list of names
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wiki_languages_url = 'https://meta.wikimedia.org/wiki/List_of_Wikipedias'
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google_languages_url = 'https://www.google.com/preferences?#languages'
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country_names_url = 'http://api.geonames.org/countryInfoJSON?{parameters}'
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geonames_user = '' # add user name here
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google_json_name = 'google.preferences.langMap'
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languages = {}
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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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if lang_code[:2] == 'xx'\
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or lang_code == 'jw'\
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or lang_code[-2:] == 'UK'\
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or lang_code[-2:] == 'XA'\
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or lang_code[-2:] == 'XL':
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return False
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# filter dialects
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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 False
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if len(lang_code) == 2 and len(lang_code[1]) > 2:
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return False
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return True
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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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locale = locale.split('-')
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if len(locale) != 2:
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return ''
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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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print json
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return ''
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return content[0].get('countryName', '')
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# Get language names from Wikipedia.
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def get_wikipedia_languages():
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response = get(wiki_languages_url)
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dom = fromstring(response.text)
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tables = dom.xpath('//table[contains(@class,"sortable")]')
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for table in tables:
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# exclude header row
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trs = table.xpath('.//tr')[1:]
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for tr in trs:
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td = tr.xpath('./td')
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code = td[3].xpath('./a')[0].text
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name = td[2].xpath('./a')[0].text
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english_name = td[1].xpath('./a')[0].text
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articles = int(td[4].xpath('./a/b')[0].text.replace(',',''))
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# exclude language variants and languages with few articles
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if code not in languages and articles >= 10000 and valid_code(code):
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languages[code] = (name, '', english_name)
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# Get language names from Google.
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def get_google_languages():
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response = get(google_languages_url)
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dom = fromstring(response.text)
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options = dom.xpath('//select[@name="hl"]/option')
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for option in options:
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code = option.xpath('./@value')[0].split('-')[0]
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name = option.text[:-1].title()
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if code not in languages and valid_code(code):
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languages[code] = (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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for engine_name in engines:
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for locale in engines[engine_name].supported_languages:
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locale = locale.replace('_', '-')
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if locale not in languages and valid_code(locale):
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# try to get language name
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language = languages.get(locale.split('-')[0], None)
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if language == None:
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print engine_name + ": " + locale
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continue
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country = get_country_name(locale)
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languages[locale] = (language[0], country, language[2])
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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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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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countries += 1
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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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countries = 0
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prev_lang = lang
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# Write languages.py.
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def write_languages_file():
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new_file = open('languages.py', 'w')
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file_content = '# -*- coding: utf-8 -*-\n'
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file_content += '# list of language codes\n'
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file_content += '# this file is generated automatically by utils/update_search_languages.py\n'
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file_content += '\nlanguage_codes = ('
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for code in sorted(languages):
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(name, country, english) = languages[code]
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file_content += '\n (u"' + code + '"'\
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+ ', u"' + name + '"'\
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+ ', u"' + country + '"'\
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+ ', u"' + english + '"),'
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# remove last comma
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file_content = file_content[:-1]
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file_content += '\n)\n'
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new_file.write(file_content.encode('utf8'))
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new_file.close()
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if __name__ == "__main__":
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get_wikipedia_languages()
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get_google_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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