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https://github.com/searxng/searxng
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add duckduckgo images engine
This commit is contained in:
marc
Adam Tauber
parent
e60e98156f
commit
c65a409f0d
@ -41,6 +41,39 @@ title_xpath = './/a[@class="result__a"]'
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content_xpath = './/a[@class="result__snippet"]'
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# match query's language to a region code that duckduckgo will accept
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def get_region_code(lang):
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# custom fixes for languages
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if lang == 'all':
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region_code = None
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elif lang[:2] == 'ja':
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region_code = 'jp-jp'
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elif lang[:2] == 'sl':
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region_code = 'sl-sl'
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elif lang == 'zh-TW':
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region_code = 'tw-tzh'
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elif lang == 'zh-HK':
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region_code = 'hk-tzh'
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elif lang[-2:] == 'SA':
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region_code = 'xa-' + lang.split('-')[0]
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elif lang[-2:] == 'GB':
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region_code = 'uk-' + lang.split('-')[0]
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else:
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region_code = lang.split('-')
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if len(region_code) == 2:
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# country code goes first
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region_code = region_code[1].lower() + '-' + region_code[0].lower()
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else:
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# tries to get a country code from language
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region_code = region_code[0].lower()
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for lc in supported_languages:
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lc = lc.split('-')
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if region_code == lc[0]:
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region_code = lc[1].lower() + '-' + lc[0].lower()
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break
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return region_code
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# do search-request
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def request(query, params):
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if params['time_range'] and params['time_range'] not in time_range_dict:
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@ -49,38 +82,10 @@ def request(query, params):
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offset = 30 + (params['pageno'] - 1) * 50
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dc_param = offset + 1
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# custom fixes for languages
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if params['language'] == 'all':
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locale = None
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elif params['language'][:2] == 'ja':
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locale = 'jp-jp'
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elif params['language'][:2] == 'sl':
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locale = 'sl-sl'
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elif params['language'] == 'zh-TW':
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locale = 'tw-tzh'
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elif params['language'] == 'zh-HK':
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locale = 'hk-tzh'
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elif params['language'][-2:] == 'SA':
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locale = 'xa-' + params['language'].split('-')[0]
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elif params['language'][-2:] == 'GB':
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locale = 'uk-' + params['language'].split('-')[0]
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else:
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locale = params['language'].split('-')
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if len(locale) == 2:
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# country code goes first
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locale = locale[1].lower() + '-' + locale[0].lower()
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else:
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# tries to get a country code from language
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locale = locale[0].lower()
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for lc in supported_languages:
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lc = lc.split('-')
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if locale == lc[0]:
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locale = lc[1].lower() + '-' + lc[0].lower()
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break
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if locale:
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region_code = get_region_code(params['language'])
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if region_code:
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params['url'] = url.format(
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query=urlencode({'q': query, 'kl': locale}), offset=offset, dc_param=dc_param)
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query=urlencode({'q': query, 'kl': region_code}), offset=offset, dc_param=dc_param)
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else:
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params['url'] = url.format(
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query=urlencode({'q': query}), offset=offset, dc_param=dc_param)
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91
searx/engines/duckduckgo_images.py
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91
searx/engines/duckduckgo_images.py
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@ -0,0 +1,91 @@
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"""
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DuckDuckGo (Images)
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@website https://duckduckgo.com/
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@provide-api yes (https://duckduckgo.com/api),
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but images are not supported
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@using-api no
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@results JSON (site requires js to get images)
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@stable no (JSON can change)
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@parse url, title, img_src
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@todo avoid extra request
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"""
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from requests import get
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from json import loads
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from searx.engines.xpath import extract_text
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from searx.engines.duckduckgo import _fetch_supported_languages, supported_languages_url, get_region_code
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from searx.url_utils import urlencode
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# engine dependent config
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categories = ['images']
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paging = True
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language_support = True
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safesearch = True
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# search-url
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images_url = 'https://duckduckgo.com/i.js?{query}&s={offset}&p={safesearch}&o=json&vqd={vqd}'
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site_url = 'https://duckduckgo.com/?{query}&iar=images&iax=1&ia=images'
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# run query in site to get vqd number needed for requesting images
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# TODO: find a way to get this number without an extra request (is it a hash of the query?)
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def get_vqd(query):
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res = get(site_url.format(query=urlencode({'q': query})))
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content = res.text
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vqd = content[content.find('vqd=\'') + 5:]
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vqd = vqd[:vqd.find('\'')]
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return vqd
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# do search-request
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def request(query, params):
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# to avoid running actual external requests when testing
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if 'is_test' not in params:
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vqd = get_vqd(query)
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else:
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vqd = '12345'
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offset = (params['pageno'] - 1) * 50
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safesearch = params['safesearch'] - 1
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region_code = get_region_code(params['language'])
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if region_code:
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params['url'] = images_url.format(
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query=urlencode({'q': query, 'l': region_code}), offset=offset, safesearch=safesearch, vqd=vqd)
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else:
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params['url'] = images_url.format(
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query=urlencode({'q': query}), offset=offset, safesearch=safesearch, vqd=vqd)
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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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content = resp.text
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try:
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res_json = loads(content)
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except:
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return []
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# parse results
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for result in res_json['results']:
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title = result['title']
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url = result['url']
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thumbnail = result['thumbnail']
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image = result['image']
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# append result
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results.append({'template': 'images.html',
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'title': title,
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'content': '',
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'thumbnail_src': thumbnail,
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'img_src': image,
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'url': url})
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return results
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@ -167,6 +167,12 @@ engines:
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shortcut : ddg
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disabled : True
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- name : duckduckgo images
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engine : duckduckgo_images
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shortcut : ddi
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timeout: 3.0
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disabled : True
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- name : etymonline
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engine : xpath
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paging : True
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72
tests/unit/engines/test_duckduckgo_images.py
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72
tests/unit/engines/test_duckduckgo_images.py
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@ -0,0 +1,72 @@
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# -*- coding: utf-8 -*-
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from collections import defaultdict
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import mock
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from searx.engines import duckduckgo_images
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from searx.testing import SearxTestCase
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class TestDuckduckgoImagesEngine(SearxTestCase):
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def test_request(self):
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query = 'test_query'
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dicto = defaultdict(dict)
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dicto['is_test'] = True
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dicto['pageno'] = 1
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dicto['safesearch'] = 0
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dicto['language'] = 'all'
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params = duckduckgo_images.request(query, dicto)
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self.assertIn('url', params)
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self.assertIn(query, params['url'])
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self.assertIn('duckduckgo.com', params['url'])
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self.assertIn('s=0', params['url'])
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self.assertIn('p=-1', params['url'])
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self.assertIn('vqd=12345', params['url'])
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# test paging and safe search
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dicto['pageno'] = 2
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dicto['safesearch'] = 2
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params = duckduckgo_images.request(query, dicto)
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self.assertIn('url', params)
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self.assertIn(query, params['url'])
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self.assertIn('s=50', params['url'])
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self.assertIn('p=1', params['url'])
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def test_response(self):
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self.assertRaises(AttributeError, duckduckgo_images.response, None)
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self.assertRaises(AttributeError, duckduckgo_images.response, [])
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self.assertRaises(AttributeError, duckduckgo_images.response, '')
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self.assertRaises(AttributeError, duckduckgo_images.response, '[]')
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response = mock.Mock(text='If this error persists, please let us know: ops@duckduckgo.com')
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self.assertEqual(duckduckgo_images.response(response), [])
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json = u"""
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{
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"query": "test_query",
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"results": [
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{
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"title": "Result 1",
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"url": "https://site1.url",
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"thumbnail": "https://thumb1.nail",
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"image": "https://image1"
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},
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{
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"title": "Result 2",
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"url": "https://site2.url",
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"thumbnail": "https://thumb2.nail",
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"image": "https://image2"
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}
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]
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}
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"""
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response = mock.Mock(text=json)
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results = duckduckgo_images.response(response)
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self.assertEqual(len(results), 2)
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self.assertEqual(results[0]['title'], 'Result 1')
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self.assertEqual(results[0]['url'], 'https://site1.url')
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self.assertEqual(results[0]['thumbnail_src'], 'https://thumb1.nail')
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self.assertEqual(results[0]['img_src'], 'https://image1')
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self.assertEqual(results[1]['title'], 'Result 2')
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self.assertEqual(results[1]['url'], 'https://site2.url')
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self.assertEqual(results[1]['thumbnail_src'], 'https://thumb2.nail')
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self.assertEqual(results[1]['img_src'], 'https://image2')
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