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https://github.com/searxng/searxng.git
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8c7e6cc983
Just in case if content is None, the original code will skip extract_text(), and just append the None value to 'content'. So just add allow_none=True, and this will return None without raising a ValueError in extract_text().
167 lines
4.3 KiB
Python
167 lines
4.3 KiB
Python
# SPDX-License-Identifier: AGPL-3.0-or-later
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# lint: pylint
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"""Yahoo Search (Web)
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Languages are supported by mapping the language to a domain. If domain is not
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found in :py:obj:`lang2domain` URL ``<lang>.search.yahoo.com`` is used.
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"""
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from urllib.parse import (
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unquote,
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urlencode,
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)
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from lxml import html
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from searx.utils import (
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eval_xpath_getindex,
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eval_xpath_list,
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extract_text,
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match_language,
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)
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# about
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about = {
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"website": 'https://search.yahoo.com/',
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"wikidata_id": None,
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"official_api_documentation": 'https://developer.yahoo.com/api/',
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"use_official_api": False,
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"require_api_key": False,
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"results": 'HTML',
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}
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# engine dependent config
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categories = ['general', 'web']
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paging = True
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time_range_support = True
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supported_languages_url = 'https://search.yahoo.com/preferences/languages'
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"""Supported languages are read from Yahoo preference page."""
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time_range_dict = {
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'day': ('1d', 'd'),
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'week': ('1w', 'w'),
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'month': ('1m', 'm'),
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}
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language_aliases = {
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'zh-HK': 'zh_chs',
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'zh-CN': 'zh_chs', # dead since 2015 / routed to hk.search.yahoo.com
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'zh-TW': 'zh_cht',
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}
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lang2domain = {
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'zh_chs': 'hk.search.yahoo.com',
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'zh_cht': 'tw.search.yahoo.com',
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'en': 'search.yahoo.com',
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'bg': 'search.yahoo.com',
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'cs': 'search.yahoo.com',
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'da': 'search.yahoo.com',
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'el': 'search.yahoo.com',
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'et': 'search.yahoo.com',
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'he': 'search.yahoo.com',
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'hr': 'search.yahoo.com',
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'ja': 'search.yahoo.com',
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'ko': 'search.yahoo.com',
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'sk': 'search.yahoo.com',
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'sl': 'search.yahoo.com',
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}
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"""Map language to domain"""
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def _get_language(params):
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lang = language_aliases.get(params['language'])
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if lang is None:
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lang = match_language(params['language'], supported_languages, language_aliases)
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lang = lang.split('-')[0]
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logger.debug("params['language']: %s --> %s", params['language'], lang)
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return lang
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def request(query, params):
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"""build request"""
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offset = (params['pageno'] - 1) * 7 + 1
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lang = _get_language(params)
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age, btf = time_range_dict.get(params['time_range'], ('', ''))
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args = urlencode(
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{
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'p': query,
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'ei': 'UTF-8',
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'fl': 1,
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'vl': 'lang_' + lang,
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'btf': btf,
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'fr2': 'time',
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'age': age,
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'b': offset,
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'xargs': 0,
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}
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)
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domain = lang2domain.get(lang, '%s.search.yahoo.com' % lang)
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params['url'] = 'https://%s/search?%s' % (domain, args)
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return params
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def parse_url(url_string):
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"""remove yahoo-specific tracking-url"""
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endings = ['/RS', '/RK']
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endpositions = []
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start = url_string.find('http', url_string.find('/RU=') + 1)
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for ending in endings:
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endpos = url_string.rfind(ending)
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if endpos > -1:
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endpositions.append(endpos)
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if start == 0 or len(endpositions) == 0:
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return url_string
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end = min(endpositions)
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return unquote(url_string[start:end])
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def response(resp):
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"""parse response"""
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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 eval_xpath_list(dom, '//div[contains(@class,"algo-sr")]'):
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url = eval_xpath_getindex(result, './/h3/a/@href', 0, default=None)
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if url is None:
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continue
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url = parse_url(url)
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title = eval_xpath_getindex(result, './/h3/a', 0, default=None)
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if title is None:
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continue
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offset = len(extract_text(title.xpath('span')))
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title = extract_text(title)[offset:]
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content = eval_xpath_getindex(result, './/div[contains(@class, "compText")]', 0, default='')
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content = extract_text(content, allow_none=True)
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# append result
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results.append({'url': url, 'title': title, 'content': content})
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for suggestion in eval_xpath_list(dom, '//div[contains(@class, "AlsoTry")]//table//a'):
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# append suggestion
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results.append({'suggestion': extract_text(suggestion)})
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return results
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# get supported languages from their site
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def _fetch_supported_languages(resp):
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supported_languages = []
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dom = html.fromstring(resp.text)
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offset = len('lang_')
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for val in eval_xpath_list(dom, '//div[contains(@class, "lang-item")]/input/@value'):
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supported_languages.append(val[offset:])
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return supported_languages
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