|
# 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
|
|
|
|
|
|
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
|
|
|
|
|
|
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])
|
|
|
|
|
|
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='')
|
|
if content:
|
|
content = extract_text(content)
|
|
|
|
# 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
|