# SPDX-License-Identifier: AGPL-3.0-or-later
# lint: pylint
"""Yahoo Search (Web)
Languages are supported by mapping the language to a domain. If domain is not
found in :py:obj:`lang2domain` URL ``<lang>.search.yahoo.com`` is used.
"""
from urllib.parse import (
unquote,
urlencode,
)
from lxml import html
from searx.utils import (
eval_xpath_getindex,
eval_xpath_list,
extract_text,
match_language,
)
# about
about = {
"website": 'https://search.yahoo.com/',
"wikidata_id": None,
"official_api_documentation": 'https://developer.yahoo.com/api/',
"use_official_api": False,
"require_api_key": False,
"results": 'HTML',
}
# engine dependent config
categories = ['general', 'web']
paging = True
time_range_support = True
supported_languages_url = 'https://search.yahoo.com/preferences/languages'
"""Supported languages are read from Yahoo preference page."""
time_range_dict = {
'day': ('1d', 'd'),
'week': ('1w', 'w'),
'month': ('1m', 'm'),
}
language_aliases = {
'zh-HK': 'zh_chs',
'zh-CN': 'zh_chs', # dead since 2015 / routed to hk.search.yahoo.com
'zh-TW': 'zh_cht',
}
lang2domain = {
'zh_chs': 'hk.search.yahoo.com',
'zh_cht': 'tw.search.yahoo.com',
'en': 'search.yahoo.com',
'bg': 'search.yahoo.com',
'cs': 'search.yahoo.com',
'da': 'search.yahoo.com',
'el': 'search.yahoo.com',
'et': 'search.yahoo.com',
'he': 'search.yahoo.com',
'hr': 'search.yahoo.com',
'ja': 'search.yahoo.com',
'ko': 'search.yahoo.com',
'sk': 'search.yahoo.com',
'sl': 'search.yahoo.com',
}
"""Map language to domain"""
def _get_language(params):
lang = language_aliases.get(params['language'])
if lang is None:
lang = match_language(params['language'], supported_languages, language_aliases)
lang = lang.split('-')[0]
logger.debug("params['language']: %s --> %s", params['language'], lang)
return lang
[docs]def request(query, params):
"""build request"""
offset = (params['pageno'] - 1) * 7 + 1
lang = _get_language(params)
age, btf = time_range_dict.get(params['time_range'], ('', ''))
args = urlencode(
{
'p': query,
'ei': 'UTF-8',
'fl': 1,
'vl': 'lang_' + lang,
'btf': btf,
'fr2': 'time',
'age': age,
'b': offset,
'xargs': 0,
}
)
domain = lang2domain.get(lang, '%s.search.yahoo.com' % lang)
params['url'] = 'https://%s/search?%s' % (domain, args)
return params
[docs]def parse_url(url_string):
"""remove yahoo-specific tracking-url"""
endings = ['/RS', '/RK']
endpositions = []
start = url_string.find('http', url_string.find('/RU=') + 1)
for ending in endings:
endpos = url_string.rfind(ending)
if endpos > -1:
endpositions.append(endpos)
if start == 0 or len(endpositions) == 0:
return url_string
end = min(endpositions)
return unquote(url_string[start:end])
[docs]def response(resp):
"""parse response"""
results = []
dom = html.fromstring(resp.text)
# parse results
for result in eval_xpath_list(dom, '//div[contains(@class,"algo-sr")]'):
url = eval_xpath_getindex(result, './/h3/a/@href', 0, default=None)
if url is None:
continue
url = parse_url(url)
title = eval_xpath_getindex(result, './/h3/a', 0, default=None)
if title is None:
continue
offset = len(extract_text(title.xpath('span')))
title = extract_text(title)[offset:]
content = eval_xpath_getindex(result, './/div[contains(@class, "compText")]', 0, default='')
content = extract_text(content, allow_none=True)
# append result
results.append({'url': url, 'title': title, 'content': content})
for suggestion in eval_xpath_list(dom, '//div[contains(@class, "AlsoTry")]//table//a'):
# append suggestion
results.append({'suggestion': extract_text(suggestion)})
return results
# get supported languages from their site
def _fetch_supported_languages(resp):
supported_languages = []
dom = html.fromstring(resp.text)
offset = len('lang_')
for val in eval_xpath_list(dom, '//div[contains(@class, "lang-item")]/input/@value'):
supported_languages.append(val[offset:])
return supported_languages
