mirror of https://github.com/searxng/searxng.git
80 lines
2.7 KiB
Python
80 lines
2.7 KiB
Python
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from os.path import realpath, dirname, splitext, join
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from os import listdir
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from imp import load_source
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import grequests
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from itertools import izip_longest, chain
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from operator import itemgetter
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engine_dir = dirname(realpath(__file__))
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engines = {}
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for filename in listdir(engine_dir):
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modname = splitext(filename)[0]
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if filename.startswith('_') or not filename.endswith('.py'):
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continue
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filepath = join(engine_dir, filename)
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engine = load_source(modname, filepath)
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if not hasattr(engine, 'request') or not hasattr(engine, 'response'):
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continue
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engines[modname] = engine
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def default_request_params():
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return {'method': 'GET', 'headers': {}, 'data': {}, 'url': ''}
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def make_callback(engine_name, results, callback):
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def process_callback(response, **kwargs):
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cb_res = []
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for result in callback(response):
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result['engine'] = engine_name
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cb_res.append(result)
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results[engine_name] = cb_res
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return process_callback
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def search(query, request, selected_engines):
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global engines
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requests = []
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results = {}
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user_agent = request.headers.get('User-Agent', '')
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for ename, engine in engines.items():
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if ename not in selected_engines:
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continue
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headers = default_request_params()
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headers['User-Agent'] = user_agent
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request_params = engine.request(query, headers)
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callback = make_callback(ename, results, engine.response)
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if request_params['method'] == 'GET':
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req = grequests.get(request_params['url']
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,headers=headers
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,hooks=dict(response=callback)
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)
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else:
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req = grequests.post(request_params['url']
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,data=request_params['data']
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,headers=headers
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,hooks=dict(response=callback)
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)
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requests.append(req)
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grequests.map(requests)
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flat_res = list(filter(None, chain(*izip_longest(*results.values()))))
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flat_len = len(flat_res)
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results = []
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# deduplication + scoring
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for i,res in enumerate(flat_res):
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score = flat_len - i
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duplicated = False
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for new_res in results:
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if res['url'] == new_res['url']:
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duplicated = new_res
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break
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if duplicated:
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if len(res['content']) > len(duplicated):
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duplicated['content'] = res['content']
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duplicated['score'] += score
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else:
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res['score'] = score
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results.append(res)
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return sorted(results, key=itemgetter('score'), reverse=True)
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