searxng/searx/engines/json_engine.py

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from collections import Iterable
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from json import loads
from sys import version_info
from searx.url_utils import urlencode
if version_info[0] == 3:
unicode = str
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search_url = None
url_query = None
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content_query = None
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title_query = None
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paging = False
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suggestion_query = ''
results_query = ''
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# parameters for engines with paging support
#
# number of results on each page
# (only needed if the site requires not a page number, but an offset)
page_size = 1
# number of the first page (usually 0 or 1)
first_page_num = 1
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def iterate(iterable):
if type(iterable) == dict:
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it = iterable.items()
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else:
it = enumerate(iterable)
for index, value in it:
yield str(index), value
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def is_iterable(obj):
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if type(obj) == str:
return False
if type(obj) == unicode:
return False
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return isinstance(obj, Iterable)
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def parse(query):
q = []
for part in query.split('/'):
if part == '':
continue
else:
q.append(part)
return q
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def do_query(data, q):
ret = []
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if not q:
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return ret
qkey = q[0]
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for key, value in iterate(data):
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if len(q) == 1:
if key == qkey:
ret.append(value)
elif is_iterable(value):
ret.extend(do_query(value, q))
else:
if not is_iterable(value):
continue
if key == qkey:
ret.extend(do_query(value, q[1:]))
else:
ret.extend(do_query(value, q))
return ret
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def query(data, query_string):
q = parse(query_string)
return do_query(data, q)
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def request(query, params):
query = urlencode({'q': query})[2:]
fp = {'query': query}
if paging and search_url.find('{pageno}') >= 0:
fp['pageno'] = (params['pageno'] - 1) * page_size + first_page_num
params['url'] = search_url.format(**fp)
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params['query'] = query
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return params
def response(resp):
results = []
json = loads(resp.text)
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if results_query:
rs = query(json, results_query)
if not len(rs):
return results
for result in rs[0]:
try:
url = query(result, url_query)[0]
title = query(result, title_query)[0]
except:
continue
try:
content = query(result, content_query)[0]
except:
content = ""
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results.append({'url': url, 'title': title, 'content': content})
else:
for url, title, content in zip(
query(json, url_query),
query(json, title_query),
query(json, content_query)
):
results.append({'url': url, 'title': title, 'content': content})
if not suggestion_query:
return results
for suggestion in query(json, suggestion_query):
results.append({'suggestion': suggestion})
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return results