searxng/searx/engines/archlinux.py
Kirill Isakov 8b7dc2acb9 Remove content field from ArchWiki results; reformat code in archlinux.py
Content field in Arch Wiki search results is of no real use, more often
than not it contains no usable information and includes too many markup
tags which make the text unreadable. It is safe to remove it.
2016-03-25 00:38:48 +06:00

141 lines
3.9 KiB
Python

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