# Startpage (Web)
#
# @website https://startpage.com
# @provide-api no (nothing found)
#
# @using-api no
# @results HTML
# @stable no (HTML can change)
# @parse url, title, content
#
# @todo paging
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.languages import language_codes
from searx.utils import extract_text, eval_xpath, match_language
# engine dependent config
categories = ['general']
# there is a mechanism to block "bot" search
# (probably the parameter qid), require
# storing of qid's between mulitble search-calls
paging = True
language_support = True
supported_languages_url = 'https://www.startpage.com/do/settings'
# search-url
base_url = 'https://startpage.com/'
search_url = base_url + 'do/search'
# 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"]
results_xpath = '//div[@class="w-gl__result"]'
link_xpath = './/a[@class="w-gl__result-title"]'
content_xpath = './/p[@class="w-gl__description"]'
# do search-request
def request(query, params):
params['url'] = search_url
params['method'] = 'POST'
params['data'] = {
'query': query,
'page': params['pageno'],
'cat': 'web',
'cmd': 'process_search',
'engine0': 'v1all',
}
# 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']
params['data']['language'] = language_name
params['data']['lui'] = language_name
return params
# get response from search-request
def response(resp):
results = []
dom = html.fromstring(resp.text)
# parse results
for result in eval_xpath(dom, results_xpath):
links = eval_xpath(result, link_xpath)
if not links:
continue
link = links[0]
url = link.attrib.get('href')
# block google-ad url's
if re.match(r"^http(s|)://(www\.)?google\.[a-z]+/aclk.*$", url):
continue
# block startpage search url's
if re.match(r"^http(s|)://(www\.)?startpage\.com/do/search\?.*$", url):
continue
title = extract_text(link)
if eval_xpath(result, content_xpath):
content = extract_text(eval_xpath(result, content_xpath))
else:
content = ''
published_date = None
# check if search result starts with something like: "2 Sep 2014 ... "
if re.match(r"^([1-9]|[1-2][0-9]|3[0-1]) [A-Z][a-z]{2} [0-9]{4} \.\.\. ", content):
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 ... "
elif re.match(r"^[0-9]+ days? ago \.\.\. ", content):
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})
# return results
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
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