searx/searx/engines/yacy.py

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## Yacy (Web, Images, Videos, Music, Files)
#
# @website http://yacy.net
# @provide-api yes (http://www.yacy-websuche.de/wiki/index.php/Dev:APIyacysearch)
#
# @using-api yes
# @results JSON
# @stable yes
# @parse (general) url, title, content, publishedDate
# @parse (images) url, title, img_src
#
# @todo parse video, audio and file results
from json import loads
from urllib import urlencode
from dateutil import parser
# engine dependent config
categories = ['general', 'images'] #TODO , 'music', 'videos', 'files'
paging = True
language_support = True
number_of_results = 5
# search-url
base_url = 'http://localhost:8090'
search_url = '/yacysearch.json?{query}&startRecord={offset}&maximumRecords={limit}&contentdom={search_type}&resource=global'
# yacy specific type-definitions
search_types = {'general': 'text',
'images': 'image',
'files': 'app',
'music': 'audio',
'videos': 'video'}
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# do search-request
def request(query, params):
offset = (params['pageno'] - 1) * number_of_results
search_type = search_types.get(params['category'], '0')
params['url'] = base_url + search_url.format(query=urlencode({'query': query}),
offset=offset,
limit=number_of_results,
search_type=search_type)
# add language tag if specified
if params['language'] != 'all':
params['url'] += '&lr=lang_' + params['language'].split('_')[0]
return params
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# get response from search-request
def response(resp):
results = []
raw_search_results = loads(resp.text)
# return empty array if there are no results
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if not raw_search_results:
return []
search_results = raw_search_results.get('channels', {})[0].get('items', [])
if resp.search_params['category'] == 'general':
# parse general results
for result in search_results:
publishedDate = parser.parse(result['pubDate'])
# append result
results.append({'url': result['link'],
'title': result['title'],
'content': result['description'],
'publishedDate': publishedDate})
elif resp.search_params['category'] == 'images':
# parse image results
for result in search_results:
# append result
results.append({'url': result['url'],
'title': result['title'],
'content': '',
'img_src': result['image'],
'template': 'images.html'})
#TODO parse video, audio and file results
# return results
return results