Functions
	is_broken_text (text)

	result_to_text (text, htmlResult)

	request (query, params)

	response (resp)

	unit_to_str (unit)

	area_to_str (area)

Variables
logging	logger .Logger

dict	about

bool	send_accept_language_header = True

str	URL = 'https://api.duckduckgo.com/' + '?{query}&format=json&pretty=0&no_redirect=1&d=1'

list	WIKIDATA_PREFIX = ['http://www.wikidata.org/entity/', 'https://www.wikidata.org/entity/']

	replace_http_by_https = get_string_replaces_function({'http:': 'https:'})

Detailed Description

DuckDuckGo Instant Answer API
~~~~~~~~~~~~~~~~~~~~~~~~~~~~~

The `DDG-API <https://duckduckgo.com/api>`__ is no longer documented but from
reverse engineering we can see that some services (e.g. instant answers) still
in use from the DDG search engine.

As far we can say the *instant answers* API does not support languages, or at
least we could not find out how language support should work.  It seems that
most of the features are based on English terms.

Function Documentation

◆ area_to_str()

searx.engines.duckduckgo_definitions.area_to_str ( area )

parse ``{'unit': 'https://www.wikidata.org/entity/Q712226', 'amount': '+20.99'}``

Definition at line 248 of file duckduckgo_definitions.py.

def area_to_str(area):
    """parse ``{'unit': 'https://www.wikidata.org/entity/Q712226', 'amount': '+20.99'}``"""
    unit = unit_to_str(area.get('unit'))
    if unit is not None:
        try:
            amount = float(area.get('amount'))
            return '{} {}'.format(amount, unit)
        except ValueError:
            pass
    return '{} {}'.format(area.get('amount', ''), area.get('unit', ''))

References searx.format, and searx.engines.duckduckgo_definitions.unit_to_str().

Referenced by searx.engines.duckduckgo_definitions.response().

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◆ is_broken_text()

searx.engines.duckduckgo_definitions.is_broken_text ( text )

duckduckgo may return something like ``<a href="xxxx">http://somewhere Related website<a/>``

The href URL is broken, the "Related website" may contains some HTML.

The best solution seems to ignore these results.

Definition at line 49 of file duckduckgo_definitions.py.

def is_broken_text(text):
    """duckduckgo may return something like ``<a href="xxxx">http://somewhere Related website<a/>``
 
    The href URL is broken, the "Related website" may contains some HTML.
 
    The best solution seems to ignore these results.
    """
    return text.startswith('http') and ' ' in text
 
 

Referenced by searx.engines.duckduckgo_definitions.response(), and searx.engines.duckduckgo_definitions.result_to_text().

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◆ request()

searx.engines.duckduckgo_definitions.request	(		query,
			params )

Definition at line 73 of file duckduckgo_definitions.py.

def request(query, params):
    params['url'] = URL.format(query=urlencode({'q': query}))
    return params
 
 

◆ response()

searx.engines.duckduckgo_definitions.response ( resp )

Definition at line 78 of file duckduckgo_definitions.py.

def response(resp):
    # pylint: disable=too-many-locals, too-many-branches, too-many-statements
    results = []
 
    search_res = resp.json()
 
    # search_res.get('Entity') possible values (not exhaustive) :
    # * continent / country / department / location / waterfall
    # * actor / musician / artist
    # * book / performing art / film / television  / media franchise / concert tour / playwright
    # * prepared food
    # * website / software / os / programming language / file format / software engineer
    # * company
 
    content = ''
    heading = search_res.get('Heading', '')
    attributes = []
    urls = []
    infobox_id = None
    relatedTopics = []
 
    # add answer if there is one
    answer = search_res.get('Answer', '')
    if answer:
        logger.debug('AnswerType="%s" Answer="%s"', search_res.get('AnswerType'), answer)
        if search_res.get('AnswerType') not in ['calc', 'ip']:
            results.append({'answer': html_to_text(answer), 'url': search_res.get('AbstractURL', '')})
 
    # add infobox
    if 'Definition' in search_res:
        content = content + search_res.get('Definition', '')
 
    if 'Abstract' in search_res:
        content = content + search_res.get('Abstract', '')
 
    # image
    image = search_res.get('Image')
    image = None if image == '' else image
    if image is not None and urlparse(image).netloc == '':
        image = urljoin('https://duckduckgo.com', image)
 
    # urls
    # Official website, Wikipedia page
    for ddg_result in search_res.get('Results', []):
        firstURL = ddg_result.get('FirstURL')
        text = ddg_result.get('Text')
        if firstURL is not None and text is not None:
            urls.append({'title': text, 'url': firstURL})
            results.append({'title': heading, 'url': firstURL})
 
    # related topics
    for ddg_result in search_res.get('RelatedTopics', []):
        if 'FirstURL' in ddg_result:
            firstURL = ddg_result.get('FirstURL')
            text = ddg_result.get('Text')
            if not is_broken_text(text):
                suggestion = result_to_text(text, ddg_result.get('Result'))
                if suggestion != heading and suggestion is not None:
                    results.append({'suggestion': suggestion})
        elif 'Topics' in ddg_result:
            suggestions = []
            relatedTopics.append({'name': ddg_result.get('Name', ''), 'suggestions': suggestions})
            for topic_result in ddg_result.get('Topics', []):
                suggestion = result_to_text(topic_result.get('Text'), topic_result.get('Result'))
                if suggestion != heading and suggestion is not None:
                    suggestions.append(suggestion)
 
    # abstract
    abstractURL = search_res.get('AbstractURL', '')
    if abstractURL != '':
        # add as result ? problem always in english
        infobox_id = abstractURL
        urls.append({'title': search_res.get('AbstractSource'), 'url': abstractURL, 'official': True})
        results.append({'url': abstractURL, 'title': heading})
 
    # definition
    definitionURL = search_res.get('DefinitionURL', '')
    if definitionURL != '':
        # add as result ? as answer ? problem always in english
        infobox_id = definitionURL
        urls.append({'title': search_res.get('DefinitionSource'), 'url': definitionURL})
 
    # to merge with wikidata's infobox
    if infobox_id:
        infobox_id = replace_http_by_https(infobox_id)
 
    # attributes
    # some will be converted to urls
    if 'Infobox' in search_res:
        infobox = search_res.get('Infobox')
        if 'content' in infobox:
            osm_zoom = 17
            coordinates = None
            for info in infobox.get('content'):
                data_type = info.get('data_type')
                data_label = info.get('label')
                data_value = info.get('value')
 
                # Workaround: ddg may return a double quote
                if data_value == '""':
                    continue
 
                # Is it an external URL ?
                # * imdb_id / facebook_profile / youtube_channel / youtube_video / twitter_profile
                # * instagram_profile / rotten_tomatoes / spotify_artist_id / itunes_artist_id / soundcloud_id
                # * netflix_id
                external_url = get_external_url(data_type, data_value)
                if external_url is not None:
                    urls.append({'title': data_label, 'url': external_url})
                elif data_type in ['instance', 'wiki_maps_trigger', 'google_play_artist_id']:
                    # ignore instance: Wikidata value from "Instance Of" (Qxxxx)
                    # ignore wiki_maps_trigger: reference to a javascript
                    # ignore google_play_artist_id: service shutdown
                    pass
                elif data_type == 'string' and data_label == 'Website':
                    # There is already an URL for the website
                    pass
                elif data_type == 'area':
                    attributes.append({'label': data_label, 'value': area_to_str(data_value), 'entity': 'P2046'})
                    osm_zoom = area_to_osm_zoom(data_value.get('amount'))
                elif data_type == 'coordinates':
                    if data_value.get('globe') == 'http://www.wikidata.org/entity/Q2':
                        # coordinate on Earth
                        # get the zoom information from the area
                        coordinates = info
                    else:
                        # coordinate NOT on Earth
                        attributes.append({'label': data_label, 'value': data_value, 'entity': 'P625'})
                elif data_type == 'string':
                    attributes.append({'label': data_label, 'value': data_value})
 
            if coordinates:
                data_label = coordinates.get('label')
                data_value = coordinates.get('value')
                latitude = data_value.get('latitude')
                longitude = data_value.get('longitude')
                url = get_earth_coordinates_url(latitude, longitude, osm_zoom)
                urls.append({'title': 'OpenStreetMap', 'url': url, 'entity': 'P625'})
 
    if len(heading) > 0:
        # TODO get infobox.meta.value where .label='article_title'    # pylint: disable=fixme
        if image is None and len(attributes) == 0 and len(urls) == 1 and len(relatedTopics) == 0 and len(content) == 0:
            results.append({'url': urls[0]['url'], 'title': heading, 'content': content})
        else:
            results.append(
                {
                    'infobox': heading,
                    'id': infobox_id,
                    'content': content,
                    'img_src': image,
                    'attributes': attributes,
                    'urls': urls,
                    'relatedTopics': relatedTopics,
                }
            )
 
    return results
 
 

References searx.engines.duckduckgo_definitions.area_to_str(), searx.engines.duckduckgo_definitions.is_broken_text(), searx.engines.duckduckgo_definitions.replace_http_by_https, and searx.engines.duckduckgo_definitions.result_to_text().

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◆ result_to_text()

searx.engines.duckduckgo_definitions.result_to_text	(		text,
			htmlResult )

Definition at line 59 of file duckduckgo_definitions.py.

def result_to_text(text, htmlResult):
    # TODO : remove result ending with "Meaning" or "Category"  # pylint: disable=fixme
    result = None
    dom = html.fromstring(htmlResult)
    a = dom.xpath('//a')
    if len(a) >= 1:
        result = extract_text(a[0])
    else:
        result = text
    if not is_broken_text(result):
        return result
    return None
 
 

References searx.engines.duckduckgo_definitions.is_broken_text().

Referenced by searx.engines.duckduckgo_definitions.response().

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◆ unit_to_str()

searx.engines.duckduckgo_definitions.unit_to_str ( unit )

Definition at line 237 of file duckduckgo_definitions.py.

def unit_to_str(unit):
    for prefix in WIKIDATA_PREFIX:
        if unit.startswith(prefix):
            wikidata_entity = unit[len(prefix) :]
            real_unit = WIKIDATA_UNITS.get(wikidata_entity)
            if real_unit is None:
                return unit
            return real_unit['symbol']
    return unit
 
 

Referenced by searx.engines.duckduckgo_definitions.area_to_str().

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Variable Documentation

◆ about

dict searx.engines.duckduckgo_definitions.about

Initial value:

=  {
    "website": 'https://duckduckgo.com/',
    "wikidata_id": 'Q12805',
    "official_api_documentation": 'https://duckduckgo.com/api',
    "use_official_api": True,
    "require_api_key": False,
    "results": 'JSON',
}

Definition at line 31 of file duckduckgo_definitions.py.

◆ logger

logging searx.engines.duckduckgo_definitions.logger .Logger

Definition at line 28 of file duckduckgo_definitions.py.

◆ replace_http_by_https

searx.engines.duckduckgo_definitions.replace_http_by_https = get_string_replaces_function({'http:': 'https:'})

Definition at line 46 of file duckduckgo_definitions.py.

Referenced by searx.engines.duckduckgo_definitions.response().

◆ send_accept_language_header

bool searx.engines.duckduckgo_definitions.send_accept_language_header = True

Definition at line 40 of file duckduckgo_definitions.py.

◆ URL

str searx.engines.duckduckgo_definitions.URL = 'https://api.duckduckgo.com/' + '?{query}&format=json&pretty=0&no_redirect=1&d=1'

Definition at line 42 of file duckduckgo_definitions.py.

◆ WIKIDATA_PREFIX

list searx.engines.duckduckgo_definitions.WIKIDATA_PREFIX = ['http://www.wikidata.org/entity/', 'https://www.wikidata.org/entity/']

Definition at line 44 of file duckduckgo_definitions.py.

Functions

Variables

Detailed Description

Function Documentation

◆ area_to_str()

◆ is_broken_text()

◆ request()

◆ response()

◆ result_to_text()

◆ unit_to_str()

Variable Documentation

◆ about

◆ logger

◆ replace_http_by_https

◆ send_accept_language_header

◆ URL

◆ WIKIDATA_PREFIX