searxng/searx/engines/startpage.py

186 lines
6.4 KiB
Python
Raw Normal View History

# SPDX-License-Identifier: AGPL-3.0-or-later
"""
Startpage (Web)
"""
from urllib.parse import urlencode
2013-10-19 16:29:39 +00:00
from lxml import html
from dateutil import parser
from datetime import datetime, timedelta
import re
from unicodedata import normalize, combining
from babel import Locale
from babel.localedata import locale_identifiers
from searx.utils import extract_text, eval_xpath, match_language
# about
about = {
"website": 'https://startpage.com',
"wikidata_id": 'Q2333295',
"official_api_documentation": None,
"use_official_api": False,
"require_api_key": False,
"results": 'HTML',
}
# engine dependent config
2021-12-22 15:58:52 +00:00
categories = ['general', 'web']
2014-11-17 09:19:23 +00:00
# there is a mechanism to block "bot" search
# (probably the parameter qid), require
# storing of qid's between mulitble search-calls
paging = True
supported_languages_url = 'https://www.startpage.com/do/settings'
2013-10-19 16:29:39 +00:00
# search-url
base_url = 'https://startpage.com/'
search_url = base_url + 'sp/search?'
2013-10-19 16:29:39 +00:00
# specific xpath variables
# ads xpath //div[@id="results"]/div[@id="sponsored"]//div[@class="result"]
# not ads: div[@class="result"] are the direct childs of div[@id="results"]
2020-12-13 14:43:50 +00:00
results_xpath = '//div[@class="w-gl__result__main"]'
link_xpath = './/a[@class="w-gl__result-title result-link"]'
content_xpath = './/p[@class="w-gl__description"]'
2014-01-30 01:10:32 +00:00
2014-01-24 08:35:27 +00:00
# do search-request
2013-10-19 16:29:39 +00:00
def request(query, params):
args = {
'query': query,
'page': params['pageno'],
'cat': 'web',
# 'abp': "-1",
'sc': 'Mj4jZy61QETj20',
}
# set language if specified
if params['language'] != 'all':
lang_code = match_language(params['language'], supported_languages, fallback=None)
if lang_code:
language_name = supported_languages[lang_code]['alias']
args['language'] = language_name
args['lui'] = language_name
params['url'] = search_url + urlencode(args)
2013-10-19 16:29:39 +00:00
return params
# get response from search-request
2013-10-19 16:29:39 +00:00
def response(resp):
results = []
2016-11-30 17:43:03 +00:00
dom = html.fromstring(resp.text)
2014-11-17 09:19:23 +00:00
# parse results
for result in eval_xpath(dom, results_xpath):
links = eval_xpath(result, link_xpath)
2014-11-17 09:19:23 +00:00
if not links:
continue
link = links[0]
2013-10-24 21:43:39 +00:00
url = link.attrib.get('href')
# block google-ad url's
2016-07-11 13:29:47 +00:00
if re.match(r"^http(s|)://(www\.)?google\.[a-z]+/aclk.*$", url):
continue
# block startpage search url's
2016-07-11 13:29:47 +00:00
if re.match(r"^http(s|)://(www\.)?startpage\.com/do/search\?.*$", url):
continue
title = extract_text(link)
2015-02-06 16:31:10 +00:00
if eval_xpath(result, content_xpath):
content = extract_text(eval_xpath(result, content_xpath))
else:
content = ''
2014-01-24 08:35:27 +00:00
published_date = None
# check if search result starts with something like: "2 Sep 2014 ... "
2016-07-11 13:29:47 +00:00
if re.match(r"^([1-9]|[1-2][0-9]|3[0-1]) [A-Z][a-z]{2} [0-9]{4} \.\.\. ", content):
2016-01-18 11:47:31 +00:00
date_pos = content.find('...') + 4
date_string = content[0 : date_pos - 5]
# fix content string
content = content[date_pos:]
try:
published_date = parser.parse(date_string, dayfirst=True)
except ValueError:
pass
# check if search result starts with something like: "5 days ago ... "
2016-07-11 13:29:47 +00:00
elif re.match(r"^[0-9]+ days? ago \.\.\. ", content):
2016-01-18 11:47:31 +00:00
date_pos = content.find('...') + 4
date_string = content[0 : date_pos - 5]
# calculate datetime
published_date = datetime.now() - timedelta(days=int(re.match(r'\d+', date_string).group()))
# fix content string
content = content[date_pos:]
if published_date:
# append result
results.append({'url': url, 'title': title, 'content': content, 'publishedDate': published_date})
else:
# append result
results.append({'url': url, 'title': title, 'content': content})
2014-01-24 08:35:27 +00:00
# return results
2013-10-19 16:29:39 +00:00
return results
# get supported languages from their site
def _fetch_supported_languages(resp):
# startpage's language selector is a mess
# each option has a displayed name and a value, either of which may represent the language name
# in the native script, the language name in English, an English transliteration of the native name,
# the English name of the writing script used by the language, or occasionally something else entirely.
# this cases are so special they need to be hardcoded, a couple of them are mispellings
language_names = {
'english_uk': 'en-GB',
'fantizhengwen': ['zh-TW', 'zh-HK'],
'hangul': 'ko',
'malayam': 'ml',
'norsk': 'nb',
'sinhalese': 'si',
'sudanese': 'su',
}
# get the English name of every language known by babel
language_names.update({name.lower(): lang_code for lang_code, name in Locale('en')._data['languages'].items()})
# get the native name of every language known by babel
for lang_code in filter(lambda lang_code: lang_code.find('_') == -1, locale_identifiers()):
native_name = Locale(lang_code).get_language_name().lower()
# add native name exactly as it is
language_names[native_name] = lang_code
# add "normalized" language name (i.e. français becomes francais and español becomes espanol)
unaccented_name = ''.join(filter(lambda c: not combining(c), normalize('NFKD', native_name)))
if len(unaccented_name) == len(unaccented_name.encode()):
# add only if result is ascii (otherwise "normalization" didn't work)
language_names[unaccented_name] = lang_code
dom = html.fromstring(resp.text)
sp_lang_names = []
for option in dom.xpath('//form[@id="settings-form"]//select[@name="language"]/option'):
sp_lang_names.append((option.get('value'), extract_text(option).lower()))
supported_languages = {}
for sp_option_value, sp_option_text in sp_lang_names:
lang_code = language_names.get(sp_option_value) or language_names.get(sp_option_text)
if isinstance(lang_code, str):
supported_languages[lang_code] = {'alias': sp_option_value}
elif isinstance(lang_code, list):
for lc in lang_code:
supported_languages[lc] = {'alias': sp_option_value}
else:
print('Unknown language option in Startpage: {} ({})'.format(sp_option_value, sp_option_text))
return supported_languages