searxng/searx/plugins/query_strings.py

import shlex, string
from flask_babel import gettext

name = gettext("query strings")
description = gettext('adds site:, - and "" to searx')
default_on = True

def on_result(request, search, result):
    q = search.search_query.query
    qs = shlex.split(q)
    spitems = [x.lower() for x in qs if ' ' in x]
    mitems = [x.lower() for x in qs if x.startswith('-')]
    siteitems = [x.lower() for x in qs if x.startswith('site:')]
    msiteitems = [x.lower() for x in qs if x.startswith('-site:')]
    url, title, content = result["url"].lower(), result["title"].lower(), (result.get("content").lower() if result.get("content") else '')
    if all((x not in title or x not in content) for x in spitems):
        return False
    if all((x in title or x in content) for x in mitems):
        return False
    if all(x not in url for x in siteitems):
        return False
    if all(x in url for x in msiteitems):
        return False
    return True