forked from zaclys/searxng
189 lines
6.5 KiB
Python
189 lines
6.5 KiB
Python
# Startpage (Web)
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#
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# @website https://startpage.com
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# @provide-api no (nothing found)
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#
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# @using-api no
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# @results HTML
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# @stable no (HTML can change)
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# @parse url, title, content
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#
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# @todo paging
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from lxml import html
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from dateutil import parser
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from datetime import datetime, timedelta
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import re
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from unicodedata import normalize, combining
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from babel import Locale
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from babel.localedata import locale_identifiers
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from searx.languages import language_codes
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from searx.utils import extract_text, eval_xpath, match_language
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# engine dependent config
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categories = ['general']
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# there is a mechanism to block "bot" search
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# (probably the parameter qid), require
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# storing of qid's between mulitble search-calls
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paging = True
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language_support = True
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supported_languages_url = 'https://www.startpage.com/do/settings'
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# search-url
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base_url = 'https://startpage.com/'
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search_url = base_url + 'do/search'
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# specific xpath variables
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# ads xpath //div[@id="results"]/div[@id="sponsored"]//div[@class="result"]
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# not ads: div[@class="result"] are the direct childs of div[@id="results"]
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results_xpath = '//div[@class="w-gl__result"]'
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link_xpath = './/a[@class="w-gl__result-title"]'
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content_xpath = './/p[@class="w-gl__description"]'
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# do search-request
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def request(query, params):
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params['url'] = search_url
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params['method'] = 'POST'
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params['data'] = {
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'query': query,
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'page': params['pageno'],
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'cat': 'web',
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'cmd': 'process_search',
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'engine0': 'v1all',
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}
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# set language if specified
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if params['language'] != 'all':
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lang_code = match_language(params['language'], supported_languages, fallback=None)
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if lang_code:
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language_name = supported_languages[lang_code]['alias']
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params['data']['language'] = language_name
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params['data']['lui'] = language_name
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return params
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# get response from search-request
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def response(resp):
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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(dom, results_xpath):
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links = eval_xpath(result, link_xpath)
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if not links:
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continue
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link = links[0]
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url = link.attrib.get('href')
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# block google-ad url's
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if re.match(r"^http(s|)://(www\.)?google\.[a-z]+/aclk.*$", url):
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continue
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# block startpage search url's
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if re.match(r"^http(s|)://(www\.)?startpage\.com/do/search\?.*$", url):
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continue
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title = extract_text(link)
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if eval_xpath(result, content_xpath):
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content = extract_text(eval_xpath(result, content_xpath))
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else:
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content = ''
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published_date = None
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# check if search result starts with something like: "2 Sep 2014 ... "
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if re.match(r"^([1-9]|[1-2][0-9]|3[0-1]) [A-Z][a-z]{2} [0-9]{4} \.\.\. ", content):
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date_pos = content.find('...') + 4
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date_string = content[0:date_pos - 5]
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# fix content string
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content = content[date_pos:]
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try:
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published_date = parser.parse(date_string, dayfirst=True)
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except ValueError:
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pass
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# check if search result starts with something like: "5 days ago ... "
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elif re.match(r"^[0-9]+ days? ago \.\.\. ", content):
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date_pos = content.find('...') + 4
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date_string = content[0:date_pos - 5]
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# calculate datetime
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published_date = datetime.now() - timedelta(days=int(re.match(r'\d+', date_string).group()))
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# fix content string
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content = content[date_pos:]
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if published_date:
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# append result
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results.append({'url': url,
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'title': title,
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'content': content,
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'publishedDate': published_date})
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else:
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# append result
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results.append({'url': url,
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'title': title,
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'content': content})
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# return results
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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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# startpage's language selector is a mess
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# each option has a displayed name and a value, either of which may represent the language name
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# in the native script, the language name in English, an English transliteration of the native name,
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# the English name of the writing script used by the language, or occasionally something else entirely.
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# this cases are so special they need to be hardcoded, a couple of them are mispellings
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language_names = {
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'english_uk': 'en-GB',
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'fantizhengwen': ['zh-TW', 'zh-HK'],
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'hangul': 'ko',
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'malayam': 'ml',
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'norsk': 'nb',
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'sinhalese': 'si',
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'sudanese': 'su'
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}
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# get the English name of every language known by babel
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language_names.update({name.lower(): lang_code for lang_code, name in Locale('en')._data['languages'].items()})
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# get the native name of every language known by babel
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for lang_code in filter(lambda lang_code: lang_code.find('_') == -1, locale_identifiers()):
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native_name = Locale(lang_code).get_language_name().lower()
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# add native name exactly as it is
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language_names[native_name] = lang_code
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# add "normalized" language name (i.e. français becomes francais and español becomes espanol)
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unaccented_name = ''.join(filter(lambda c: not combining(c), normalize('NFKD', native_name)))
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if len(unaccented_name) == len(unaccented_name.encode()):
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# add only if result is ascii (otherwise "normalization" didn't work)
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language_names[unaccented_name] = lang_code
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dom = html.fromstring(resp.text)
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sp_lang_names = []
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for option in dom.xpath('//form[@id="settings-form"]//select[@name="language"]/option'):
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sp_lang_names.append((option.get('value'), extract_text(option).lower()))
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supported_languages = {}
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for sp_option_value, sp_option_text in sp_lang_names:
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lang_code = language_names.get(sp_option_value) or language_names.get(sp_option_text)
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if isinstance(lang_code, str):
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supported_languages[lang_code] = {'alias': sp_option_value}
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elif isinstance(lang_code, list):
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for lc in lang_code:
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supported_languages[lc] = {'alias': sp_option_value}
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else:
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print('Unknown language option in Startpage: {} ({})'.format(sp_option_value, sp_option_text))
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return supported_languages
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