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# -*- coding: utf-8 -*-
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"""
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Arch Linux Wiki
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@website https://wiki.archlinux.org
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@provide-api no (Mediawiki provides API, but Arch Wiki blocks access to it
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@using-api no
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@results HTML
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@stable no (HTML can change)
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@parse url, title
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"""
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from urllib.parse import urlencode, urljoin
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from lxml import html
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from searx.utils import extract_text
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# engine dependent config
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categories = ['it']
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language_support = True
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paging = True
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base_url = 'https://wiki.archlinux.org'
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# xpath queries
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xpath_results = '//ul[@class="mw-search-results"]/li'
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xpath_link = './/div[@class="mw-search-result-heading"]/a'
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# cut 'en' from 'en-US', 'de' from 'de-CH', and so on
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def locale_to_lang_code(locale):
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if locale.find('-') >= 0:
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locale = locale.split('-')[0]
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return locale
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# wikis for some languages were moved off from the main site, we need to make
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# requests to correct URLs to be able to get results in those languages
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lang_urls = {
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'all': {
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'base': 'https://wiki.archlinux.org',
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'search': '/index.php?title=Special:Search&offset={offset}&{query}'
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},
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'de': {
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'base': 'https://wiki.archlinux.de',
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'search': '/index.php?title=Spezial:Suche&offset={offset}&{query}'
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},
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'fr': {
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'base': 'https://wiki.archlinux.fr',
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'search': '/index.php?title=Spécial:Recherche&offset={offset}&{query}'
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},
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'ja': {
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'base': 'https://wiki.archlinuxjp.org',
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'search': '/index.php?title=特別:検索&offset={offset}&{query}'
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},
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'ro': {
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'base': 'http://wiki.archlinux.ro',
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'search': '/index.php?title=Special:Căutare&offset={offset}&{query}'
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},
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'tr': {
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'base': 'http://archtr.org/wiki',
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'search': '/index.php?title=Özel:Ara&offset={offset}&{query}'
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}
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}
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# get base & search URLs for selected language
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def get_lang_urls(language):
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if language in lang_urls:
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return lang_urls[language]
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return lang_urls['all']
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# Language names to build search requests for
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# those languages which are hosted on the main site.
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main_langs = {
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'ar': 'العربية',
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'bg': 'Български',
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'cs': 'Česky',
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'da': 'Dansk',
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'el': 'Ελληνικά',
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'es': 'Español',
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'he': 'עברית',
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'hr': 'Hrvatski',
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'hu': 'Magyar',
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'it': 'Italiano',
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'ko': '한국어',
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'lt': 'Lietuviškai',
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'nl': 'Nederlands',
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'pl': 'Polski',
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'pt': 'Português',
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'ru': 'Русский',
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'sl': 'Slovenský',
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'th': 'ไทย',
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'uk': 'Українська',
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'zh': '简体中文'
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}
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supported_languages = dict(lang_urls, **main_langs)
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# do search-request
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def request(query, params):
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# translate the locale (e.g. 'en-US') to language code ('en')
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language = locale_to_lang_code(params['language'])
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# if our language is hosted on the main site, we need to add its name
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# to the query in order to narrow the results to that language
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if language in main_langs:
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query += ' (' + main_langs[language] + ')'
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# prepare the request parameters
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query = urlencode({'search': query})
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offset = (params['pageno'] - 1) * 20
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# get request URLs for our language of choice
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urls = get_lang_urls(language)
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search_url = urls['base'] + urls['search']
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params['url'] = search_url.format(query=query, offset=offset)
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return params
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# get response from search-request
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def response(resp):
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# get the base URL for the language in which request was made
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language = locale_to_lang_code(resp.search_params['language'])
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base_url = get_lang_urls(language)['base']
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results = []
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dom = html.fromstring(resp.text)
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# parse results
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for result in dom.xpath(xpath_results):
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link = result.xpath(xpath_link)[0]
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href = urljoin(base_url, link.attrib.get('href'))
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title = extract_text(link)
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results.append({'url': href,
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'title': title})
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return results
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