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https://github.com/searxng/searxng.git
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[enh] google engine: supports "default language"
Same behaviour behaviour than Whoogle [1]. Only the google engine with the
"Default language" choice "(all)"" is changed by this patch.
When searching for a locate place, the result are in the expect language,
without missing results [2]:
> When a language is not specified, the language interpretation is left up to
> Google to decide how the search results should be delivered.
The query parameters are copied from Whoogle. With the ``all`` language:
- add parameter ``source=lnt``
- don't use parameter ``lr``
- don't add a ``Accept-Language`` HTTP header.
The new signature of function ``get_lang_info()`` is:
lang_info = get_lang_info(params, lang_list, custom_aliases, supported_any_language)
Argument ``supported_any_language`` is True for google.py and False for the other
google engines. With this patch the function now returns:
- query parameters: ``lang_info['params']``
- HTTP headers: ``lang_info['headers']``
- and as before this patch:
- ``lang_info['subdomain']``
- ``lang_info['country']``
- ``lang_info['language']``
[1] https://github.com/benbusby/whoogle-search
[2] https://github.com/benbusby/whoogle-search/releases/tag/v0.5.4
This commit is contained in:
Alexandre Flament
Markus Heiser
parent
73dbee45a6
commit
1c67b6aece
5 changed files with 46 additions and 45 deletions
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@ -133,11 +133,12 @@ suggestion_xpath = '//div[contains(@class, "card-section")]//a'
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spelling_suggestion_xpath = '//div[@class="med"]/p/a'
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def get_lang_info(params, lang_list, custom_aliases):
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def get_lang_info(params, lang_list, custom_aliases, supported_any_language):
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ret_val = {}
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_lang = params['language']
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if _lang.lower() == 'all':
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_any_language = _lang.lower() == 'all'
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if _any_language:
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_lang = 'en-US'
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language = match_language(_lang, lang_list, custom_aliases)
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@ -159,31 +160,36 @@ def get_lang_info(params, lang_list, custom_aliases):
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# the combination (en-US, en-EN, de-DE, de-AU, fr-FR, fr-FR)
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lang_country = '%s-%s' % (language, country)
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# Accept-Language: fr-CH, fr;q=0.8, en;q=0.6, *;q=0.5
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ret_val['Accept-Language'] = ','.join([
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lang_country,
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language + ';q=0.8,',
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'en;q=0.6',
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'*;q=0.5',
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])
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# subdomain
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ret_val['subdomain'] = 'www.' + google_domains.get(country.upper(), 'google.com')
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ret_val['params'] = {}
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ret_val['headers'] = {}
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if _any_language and supported_any_language:
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# based on whoogle
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ret_val['params']['source'] = 'lnt'
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else:
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# Accept-Language: fr-CH, fr;q=0.8, en;q=0.6, *;q=0.5
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ret_val['headers']['Accept-Language'] = ','.join([
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lang_country,
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language + ';q=0.8,',
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'en;q=0.6',
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'*;q=0.5',
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])
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# lr parameter:
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# https://developers.google.com/custom-search/docs/xml_results#lrsp
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# Language Collection Values:
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# https://developers.google.com/custom-search/docs/xml_results_appendices#languageCollections
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ret_val['params']['lr'] = "lang_" + lang_list.get(lang_country, language)
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ret_val['params']['hl'] = lang_list.get(lang_country, language)
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# hl parameter:
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# https://developers.google.com/custom-search/docs/xml_results#hlsp The
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# Interface Language:
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# https://developers.google.com/custom-search/docs/xml_results_appendices#interfaceLanguages
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ret_val['hl'] = lang_list.get(lang_country, language)
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# lr parameter:
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# https://developers.google.com/custom-search/docs/xml_results#lrsp
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# Language Collection Values:
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# https://developers.google.com/custom-search/docs/xml_results_appendices#languageCollections
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ret_val['lr'] = "lang_" + lang_list.get(lang_country, language)
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return ret_val
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def detect_google_sorry(resp):
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@ -198,14 +204,13 @@ def request(query, params):
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lang_info = get_lang_info(
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# pylint: disable=undefined-variable
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params, supported_languages, language_aliases
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params, supported_languages, language_aliases, True
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)
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# https://www.google.de/search?q=corona&hl=de&lr=lang_de&start=0&tbs=qdr%3Ad&safe=medium
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query_url = 'https://' + lang_info['subdomain'] + '/search' + "?" + urlencode({
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'q': query,
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'hl': lang_info['hl'],
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'lr': lang_info['lr'],
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**lang_info['params'],
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'ie': "utf8",
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'oe': "utf8",
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'start': offset,
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@ -219,8 +224,8 @@ def request(query, params):
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logger.debug("query_url --> %s", query_url)
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params['url'] = query_url
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logger.debug("HTTP header Accept-Language --> %s", lang_info['Accept-Language'])
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params['headers']['Accept-Language'] = lang_info['Accept-Language']
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logger.debug("HTTP header Accept-Language --> %s", lang_info.get('Accept-Language'))
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params['headers'].update(lang_info['headers'])
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params['headers']['Accept'] = (
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'text/html,application/xhtml+xml,application/xml;q=0.9,image/webp,*/*;q=0.8'
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)
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@ -101,14 +101,13 @@ def request(query, params):
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lang_info = get_lang_info(
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# pylint: disable=undefined-variable
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params, supported_languages, language_aliases
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params, supported_languages, language_aliases, False
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)
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query_url = 'https://' + lang_info['subdomain'] + '/search' + "?" + urlencode({
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'q': query,
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'tbm': "isch",
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'hl': lang_info['hl'],
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'lr': lang_info['lr'],
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**lang_info['params'],
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'ie': "utf8",
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'oe': "utf8",
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'num': 30,
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@ -122,8 +121,8 @@ def request(query, params):
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logger.debug("query_url --> %s", query_url)
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params['url'] = query_url
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logger.debug("HTTP header Accept-Language --> %s", lang_info['Accept-Language'])
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params['headers']['Accept-Language'] = lang_info['Accept-Language']
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logger.debug("HTTP header Accept-Language --> %s", lang_info.get('Accept-Language'))
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params['headers'].update(lang_info['headers'])
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params['headers']['Accept'] = (
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'text/html,application/xhtml+xml,application/xml;q=0.9,image/webp,*/*;q=0.8'
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)
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@ -83,7 +83,7 @@ def request(query, params):
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lang_info = get_lang_info(
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# pylint: disable=undefined-variable
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params, supported_languages, language_aliases
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params, supported_languages, language_aliases, False
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)
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# google news has only one domain
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@ -102,8 +102,7 @@ def request(query, params):
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query_url = 'https://' + lang_info['subdomain'] + '/search' + "?" + urlencode({
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'q': query,
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'hl': lang_info['hl'],
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'lr': lang_info['lr'],
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**lang_info['params'],
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'ie': "utf8",
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'oe': "utf8",
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'gl': lang_info['country'],
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@ -112,8 +111,8 @@ def request(query, params):
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logger.debug("query_url --> %s", query_url)
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params['url'] = query_url
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logger.debug("HTTP header Accept-Language --> %s", lang_info['Accept-Language'])
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params['headers']['Accept-Language'] = lang_info['Accept-Language']
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logger.debug("HTTP header Accept-Language --> %s", lang_info.get('Accept-Language'))
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params['headers'].update(lang_info['headers'])
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params['headers']['Accept'] = (
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'text/html,application/xhtml+xml,application/xml;q=0.9,image/webp,*/*;q=0.8'
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)
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@ -81,15 +81,14 @@ def request(query, params):
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# params, {}, language_aliases
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params, supported_languages, language_aliases
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params, supported_languages, language_aliases, False
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)
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# subdomain is: scholar.google.xy
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lang_info['subdomain'] = lang_info['subdomain'].replace("www.", "scholar.")
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query_url = 'https://'+ lang_info['subdomain'] + '/scholar' + "?" + urlencode({
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'q': query,
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'hl': lang_info['hl'],
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'lr': lang_info['lr'],
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**lang_info['params'],
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'ie': "utf8",
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'oe': "utf8",
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'start' : offset,
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@ -100,8 +99,8 @@ def request(query, params):
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logger.debug("query_url --> %s", query_url)
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params['url'] = query_url
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logger.debug("HTTP header Accept-Language --> %s", lang_info['Accept-Language'])
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params['headers']['Accept-Language'] = lang_info['Accept-Language']
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logger.debug("HTTP header Accept-Language --> %s", lang_info.get('Accept-Language'))
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params['headers'].update(lang_info['headers'])
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params['headers']['Accept'] = (
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'text/html,application/xhtml+xml,application/xml;q=0.9,image/webp,*/*;q=0.8'
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)
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@ -119,14 +119,13 @@ def request(query, params):
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lang_info = get_lang_info(
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# pylint: disable=undefined-variable
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params, supported_languages, language_aliases
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params, supported_languages, language_aliases, False
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)
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query_url = 'https://' + lang_info['subdomain'] + '/search' + "?" + urlencode({
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'q': query,
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'tbm': "vid",
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'hl': lang_info['hl'],
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'lr': lang_info['lr'],
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**lang_info['params'],
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'ie': "utf8",
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'oe': "utf8",
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})
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@ -139,8 +138,8 @@ def request(query, params):
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logger.debug("query_url --> %s", query_url)
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params['url'] = query_url
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logger.debug("HTTP header Accept-Language --> %s", lang_info['Accept-Language'])
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params['headers']['Accept-Language'] = lang_info['Accept-Language']
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logger.debug("HTTP header Accept-Language --> %s", lang_info.get('Accept-Language'))
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params['headers'].update(lang_info['headers'])
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params['headers']['Accept'] = (
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'text/html,application/xhtml+xml,application/xml;q=0.9,image/webp,*/*;q=0.8'
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)
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