searx/searx/query.py

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#!/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>
'''
import re
from searx.languages import language_codes
from searx.engines import categories, engines, engine_shortcuts
from searx.search import EngineRef
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VALID_LANGUAGE_CODE = re.compile(r'^[a-z]{2,3}(-[a-zA-Z]{2})?$')
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class RawTextQuery:
Clean up the architecture Purposes : - isolate the plugins calls - distinction between parsing the web request and running the search (Search class). To be able to test code easily, to run searx code outside a web server, to filter the search query parameters with plugins more easily, etc... Details : - request.request_data contains request.form or request.args (initialize inside pre_request() function) - Query class is renamed RawTextQuery - SearchQuery class defines all search parameters - get_search_query_from_webapp create a SearchQuery instance (basically the previous Search.__init__ code) - Search class and SearchWithPlugins class takes a SearchQuery instance as class constructor parameter - SearchWithPlugins class inherites from Search class, and run plugins - A dedicated function search_with_plugins executes plugins to have a well define locals() (which is used by the plugins code). - All plugins code is executed inside the try...except block (webapp.py, index function) - advanced_search HTTP parameter value stays in webapp.py (it is only part of UI) - multiple calls to result_container.get_ordered_results() doesn't compute the order multiple time (note : this method was call only once before) - paging value is stored in the result_container class (compute in the extend method) - test about engine.suspend_end_time is done during search method call (instead of __init__) - check that the format parameter value is one of these : html, rss, json, rss (before the html value was assumed but some text formatting wasn't not done)
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"""parse raw text query (the value from the html input)"""
def __init__(self, query, disabled_engines):
assert isinstance(query, str)
self.query = query
self.disabled_engines = []
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if disabled_engines:
self.disabled_engines = disabled_engines
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self.query_parts = []
self.enginerefs = []
self.languages = []
self.timeout_limit = None
Created new plugin type custom_results. Added new plugin bang_redirect (#2027) * Made first attempt at the bangs redirects plugin. * It redirects. But in a messy way via javascript. * First version with custom plugin * Added a help page and a operator to see all the bangs available. * Changed to .format because of support * Changed to .format because of support * Removed : in params * Fixed path to json file and changed bang operator * Changed bang operator back to & * Made first attempt at the bangs redirects plugin. * It redirects. But in a messy way via javascript. * First version with custom plugin * Added a help page and a operator to see all the bangs available. * Changed to .format because of support * Changed to .format because of support * Removed : in params * Fixed path to json file and changed bang operator * Changed bang operator back to & * Refactored getting search query. Also changed bang operator to ! and is now working. * Removed prints * Removed temporary bangs_redirect.js file. Updated plugin documentation * Added unit test for the bangs plugin * Fixed a unit test and added 2 more for bangs plugin * Changed back to default settings.yml * Added myself to AUTHORS.rst * Refacored working of custom plugin. * Refactored _get_bangs_data from list to dict to improve search speed. * Decoupled bangs plugin from webserver with redirect_url * Refactored bangs unit tests * Fixed unit test bangs. Removed dubbel parsing in bangs.py * Removed a dumb print statement * Refactored bangs plugin to core engine. * Removed bangs plugin. * Refactored external bangs unit tests from plugin to core. * Removed custom_results/bangs documentation from plugins.rst * Added newline in settings.yml so the PR stays clean. * Changed searx/plugins/__init__.py back to the old file * Removed newline search.py * Refactored get_external_bang_operator from utils to external_bang.py * Removed unnecessary import form test_plugins.py * Removed _parseExternalBang and _isExternalBang from query.py * Removed get_external_bang_operator since it was not necessary * Simplified external_bang.py * Simplified external_bang.py * Moved external_bangs unit tests to test_webapp.py. Fixed return in search with external_bang * Refactored query parsing to unicode to support python2 * Refactored query parsing to unicode to support python2 * Refactored bangs plugin to core engine. * Refactored search parameter to search_query in external_bang.py
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self.external_bang = None
self.specific = False
self._parse_query()
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# parse query, if tags are set, which
Created new plugin type custom_results. Added new plugin bang_redirect (#2027) * Made first attempt at the bangs redirects plugin. * It redirects. But in a messy way via javascript. * First version with custom plugin * Added a help page and a operator to see all the bangs available. * Changed to .format because of support * Changed to .format because of support * Removed : in params * Fixed path to json file and changed bang operator * Changed bang operator back to & * Made first attempt at the bangs redirects plugin. * It redirects. But in a messy way via javascript. * First version with custom plugin * Added a help page and a operator to see all the bangs available. * Changed to .format because of support * Changed to .format because of support * Removed : in params * Fixed path to json file and changed bang operator * Changed bang operator back to & * Refactored getting search query. Also changed bang operator to ! and is now working. * Removed prints * Removed temporary bangs_redirect.js file. Updated plugin documentation * Added unit test for the bangs plugin * Fixed a unit test and added 2 more for bangs plugin * Changed back to default settings.yml * Added myself to AUTHORS.rst * Refacored working of custom plugin. * Refactored _get_bangs_data from list to dict to improve search speed. * Decoupled bangs plugin from webserver with redirect_url * Refactored bangs unit tests * Fixed unit test bangs. Removed dubbel parsing in bangs.py * Removed a dumb print statement * Refactored bangs plugin to core engine. * Removed bangs plugin. * Refactored external bangs unit tests from plugin to core. * Removed custom_results/bangs documentation from plugins.rst * Added newline in settings.yml so the PR stays clean. * Changed searx/plugins/__init__.py back to the old file * Removed newline search.py * Refactored get_external_bang_operator from utils to external_bang.py * Removed unnecessary import form test_plugins.py * Removed _parseExternalBang and _isExternalBang from query.py * Removed get_external_bang_operator since it was not necessary * Simplified external_bang.py * Simplified external_bang.py * Moved external_bangs unit tests to test_webapp.py. Fixed return in search with external_bang * Refactored query parsing to unicode to support python2 * Refactored query parsing to unicode to support python2 * Refactored bangs plugin to core engine. * Refactored search parameter to search_query in external_bang.py
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# change the search engine or search-language
def _parse_query(self):
self.query_parts = []
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# split query, including whitespaces
raw_query_parts = re.split(r'(\s+)', self.query)
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parse_next = True
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for query_part in raw_query_parts:
if not parse_next:
self.query_parts[-1] += query_part
continue
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parse_next = False
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# part does only contain spaces, skip
if query_part.isspace()\
or query_part == '':
parse_next = True
self.query_parts.append(query_part)
continue
# this force the timeout
if query_part[0] == '<':
try:
raw_timeout_limit = int(query_part[1:])
if raw_timeout_limit < 100:
# below 100, the unit is the second ( <3 = 3 seconds timeout )
self.timeout_limit = float(raw_timeout_limit)
else:
# 100 or above, the unit is the millisecond ( <850 = 850 milliseconds timeout )
self.timeout_limit = raw_timeout_limit / 1000.0
parse_next = True
except ValueError:
# error not reported to the user
pass
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# this force a language
if query_part[0] == ':':
lang = query_part[1:].lower().replace('_', '-')
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# check if any language-code is equal with
# declared language-codes
for lc in language_codes:
lang_id, lang_name, country, english_name = map(str.lower, lc)
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# if correct language-code is found
# set it as new search-language
if (lang == lang_id
or lang == lang_name
or lang == english_name
or lang.replace('-', ' ') == country)\
and lang not in self.languages:
parse_next = True
lang_parts = lang_id.split('-')
if len(lang_parts) == 2:
self.languages.append(lang_parts[0] + '-' + lang_parts[1].upper())
else:
self.languages.append(lang_id)
# to ensure best match (first match is not necessarily the best one)
if lang == lang_id:
break
# user may set a valid, yet not selectable language
if VALID_LANGUAGE_CODE.match(lang):
lang_parts = lang.split('-')
if len(lang_parts) > 1:
lang = lang_parts[0].lower() + '-' + lang_parts[1].upper()
if lang not in self.languages:
self.languages.append(lang)
parse_next = True
Created new plugin type custom_results. Added new plugin bang_redirect (#2027) * Made first attempt at the bangs redirects plugin. * It redirects. But in a messy way via javascript. * First version with custom plugin * Added a help page and a operator to see all the bangs available. * Changed to .format because of support * Changed to .format because of support * Removed : in params * Fixed path to json file and changed bang operator * Changed bang operator back to & * Made first attempt at the bangs redirects plugin. * It redirects. But in a messy way via javascript. * First version with custom plugin * Added a help page and a operator to see all the bangs available. * Changed to .format because of support * Changed to .format because of support * Removed : in params * Fixed path to json file and changed bang operator * Changed bang operator back to & * Refactored getting search query. Also changed bang operator to ! and is now working. * Removed prints * Removed temporary bangs_redirect.js file. Updated plugin documentation * Added unit test for the bangs plugin * Fixed a unit test and added 2 more for bangs plugin * Changed back to default settings.yml * Added myself to AUTHORS.rst * Refacored working of custom plugin. * Refactored _get_bangs_data from list to dict to improve search speed. * Decoupled bangs plugin from webserver with redirect_url * Refactored bangs unit tests * Fixed unit test bangs. Removed dubbel parsing in bangs.py * Removed a dumb print statement * Refactored bangs plugin to core engine. * Removed bangs plugin. * Refactored external bangs unit tests from plugin to core. * Removed custom_results/bangs documentation from plugins.rst * Added newline in settings.yml so the PR stays clean. * Changed searx/plugins/__init__.py back to the old file * Removed newline search.py * Refactored get_external_bang_operator from utils to external_bang.py * Removed unnecessary import form test_plugins.py * Removed _parseExternalBang and _isExternalBang from query.py * Removed get_external_bang_operator since it was not necessary * Simplified external_bang.py * Simplified external_bang.py * Moved external_bangs unit tests to test_webapp.py. Fixed return in search with external_bang * Refactored query parsing to unicode to support python2 * Refactored query parsing to unicode to support python2 * Refactored bangs plugin to core engine. * Refactored search parameter to search_query in external_bang.py
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# external bang
if query_part[0:2] == "!!":
self.external_bang = query_part[2:]
parse_next = True
continue
# this force a engine or category
if query_part[0] == '!' or query_part[0] == '?':
prefix = query_part[1:].replace('-', ' ').replace('_', ' ')
# check if prefix is equal with engine shortcut
if prefix in engine_shortcuts:
parse_next = True
engine_name = engine_shortcuts[prefix]
if engine_name in engines:
self.enginerefs.append(EngineRef(engine_name, 'none', True))
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# check if prefix is equal with engine name
elif prefix in engines:
parse_next = True
self.enginerefs.append(EngineRef(prefix, 'none', True))
# check if prefix is equal with categorie name
elif prefix in categories:
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# using all engines for that search, which
# are declared under that categorie name
parse_next = True
self.enginerefs.extend(EngineRef(engine.name, prefix)
for engine in categories[prefix]
if (engine.name, prefix) not in self.disabled_engines)
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if query_part[0] == '!':
self.specific = True
# append query part to query_part list
self.query_parts.append(query_part)
def changeQuery(self, query):
if len(self.query_parts):
self.query_parts[-1] = query
else:
self.query_parts.append(query)
return self
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def getQuery(self):
if len(self.query_parts):
return self.query_parts[-1]
else:
return ''
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def getFullQuery(self):
# get full querry including whitespaces
return ''.join(self.query_parts)