commit: 510aba5e6699f76e5b9dc32db18b0f19db6e5da4
parent bd2db71fa6921a757ff5df559535092f45010652
Author: Thomas Pointhuber <thomas.pointhuber@gmx.at>
Date: Wed, 1 Oct 2014 17:18:18 +0200
implement query parser and use it inside autocompletion
Diffstat:
| A | searx/query.py | 125 | +++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++ |
| M | searx/webapp.py | 30 | +++++++++++++++++++++++++++--- |
2 files changed, 152 insertions(+), 3 deletions(-)
diff --git a/searx/query.py b/searx/query.py
@@ -0,0 +1,125 @@
+#!/usr/bin/env python
+
+'''
+searx is free software: you can redistribute it and/or modify
+it under the terms of the GNU Affero General Public License as published by
+the Free Software Foundation, either version 3 of the License, or
+(at your option) any later version.
+
+searx is distributed in the hope that it will be useful,
+but WITHOUT ANY WARRANTY; without even the implied warranty of
+MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
+GNU Affero General Public License for more details.
+
+You should have received a copy of the GNU Affero General Public License
+along with searx. If not, see < http://www.gnu.org/licenses/ >.
+
+(C) 2014 by Thomas Pointhuber, <thomas.pointhuber@gmx.at>
+'''
+
+from searx.languages import language_codes
+from searx.engines import (
+ categories, engines, engine_shortcuts
+)
+import string
+import re
+
+
+class Query(object):
+ """parse query"""
+
+ def __init__(self, query, blocked_engines):
+ self.query = query
+ self.blocked_engines = []
+
+ if blocked_engines:
+ self.blocked_engines = blocked_engines
+
+ self.query_parts = []
+ self.engines = []
+ self.languages = []
+
+ def parse_query(self):
+ self.query_parts = []
+
+ # split query, including whitespaces
+ raw_query_parts = re.split(r'(\s+)', self.query)
+
+ parse_next = True
+
+ for query_part in raw_query_parts:
+ if not parse_next:
+ self.query_parts[-1] += query_part
+ continue
+
+ parse_next = False
+
+ # part does only contain spaces, skip
+ if query_part.isspace():
+ parse_next = True
+ self.query_parts.append(query_part)
+ continue
+
+ # this force a language
+ if query_part[0] == ':':
+ lang = query_part[1:].lower()
+
+ # check if any language-code is equal with declared language-codes
+ for lc in language_codes:
+ lang_id, lang_name, country = map(str.lower, lc)
+
+ # if correct language-code is found, set it as new search-language
+ if lang == lang_id\
+ or lang_id.startswith(lang)\
+ or lang == lang_name\
+ or lang == country:
+ parse_next = True
+ self.languages.append(lang)
+ break
+
+ # this force a engine or category
+ if query_part[0] == '!':
+ prefix = query_part[1:].replace('_', ' ')
+
+ # check if prefix is equal with engine shortcut
+ if prefix in engine_shortcuts\
+ and not engine_shortcuts[prefix] in self.blocked_engines:
+ parse_next = True
+ self.engines.append({'category': 'none',
+ 'name': engine_shortcuts[prefix]})
+
+ # check if prefix is equal with engine name
+ elif prefix in engines\
+ and not prefix in self.blocked_engines:
+ parse_next = True
+ self.engines.append({'category': 'none',
+ 'name': prefix})
+
+ # check if prefix is equal with categorie name
+ elif prefix in categories:
+ # using all engines for that search, which are declared under that categorie name
+ parse_next = True
+ self.engines.extend({'category': prefix,
+ 'name': engine.name}
+ for engine in categories[prefix]
+ if not engine in self.blocked_engines)
+
+ # append query part to query_part list
+ self.query_parts.append(query_part)
+
+ def changeSearchQuery(self, search_query):
+ if len(self.query_parts):
+ self.query_parts[-1] = search_query
+ else:
+ self.query_parts.append(search_query)
+
+ def getSearchQuery(self):
+ if len(self.query_parts):
+ return self.query_parts[-1]
+ else:
+ return ''
+
+ def getFullQuery(self):
+ # get full querry including whitespaces
+ return string.join(self.query_parts, '')
+
diff --git a/searx/webapp.py b/searx/webapp.py
@@ -47,6 +47,7 @@ from searx.utils import (
from searx.https_rewrite import https_rules
from searx.languages import language_codes
from searx.search import Search
+from searx.query import Query
from searx.autocomplete import backends as autocomplete_backends
@@ -308,23 +309,46 @@ def autocompleter():
"""Return autocompleter results"""
request_data = {}
+ # select request method
if request.method == 'POST':
request_data = request.form
else:
request_data = request.args
- query = request_data.get('q', '').encode('utf-8')
+ # set blocked engines
+ if request.cookies.get('blocked_engines'):
+ blocked_engines = request.cookies['blocked_engines'].split(',') # noqa
+ else:
+ blocked_engines = []
+
+ # parse query
+ query = Query(request_data.get('q', '').encode('utf-8'), blocked_engines)
+ query.parse_query()
- if not query:
+ # check if search query is set
+ if not query.getSearchQuery():
return
+ # run autocompleter
completer = autocomplete_backends.get(request.cookies.get('autocomplete'))
+ # check if valid autocompleter is selected
if not completer:
return
- results = completer(query)
+ # run autocompletion
+ raw_results = completer(query.getSearchQuery())
+
+ # parse results (write :language and !engine back to result string)
+ results = []
+ for result in raw_results:
+ result_query = query
+ result_query.changeSearchQuery(result)
+
+ # add parsed result
+ results.append(result_query.getFullQuery())
+ # return autocompleter results
if request_data.get('format') == 'x-suggestions':
return Response(json.dumps([query, results]),
mimetype='application/json')
