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https://gitlab2.federez.net/re2o/re2o
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Handle queries with "+" operators
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parent
ab311e82bc
commit
7ba5ff8be6
1 changed files with 98 additions and 45 deletions
143
search/views.py
143
search/views.py
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@ -62,11 +62,22 @@ def is_int(variable):
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return True
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def filter_fields():
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"""Return the list of fields the search applies to"""
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return ["users", "clubs", "machines", "factures", "bans", "whitelists", "rooms", "ports", "switches"]
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def empty_filters():
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"""Build empty filters used by Django"""
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filters = [Q() for f in filter_fields()]
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def finish_results(request, results, col, order):
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"""Sort the results by applying filters and then limit them to the
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number of max results. Finally add the info of the nmax number of results
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to the dict"""
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results["users"] += results["clubs"]
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results["users"] = SortTable.sort(
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results["users"], col, order, SortTable.USERS_INDEX
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)
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@ -121,12 +132,6 @@ def search_single_word(word, filters, user, start, end, user_state, aff):
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)
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filter_users = (filter_clubs | Q(name__icontains=word))
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if len(word.split(" ")) >= 2:
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# Assume the room is in 1 word, and the building may be in multiple words
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building = " ".join(word.split(" ")[:-1])
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room = word.split(" ")[-1]
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filter_users |= (Q(room__name__icontains=room) & Q(room__building__name__icontains=building))
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if not User.can_view_all(user)[0]:
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filter_clubs &= Q(id=user.id)
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filter_users &= Q(id=user.id)
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@ -211,12 +216,6 @@ def search_single_word(word, filters, user, start, end, user_state, aff):
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Q(details__icontains=word) | Q(name__icontains=word) | Q(port__details=word)
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)
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if len(word.split(" ")) >= 2:
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# Assume the room is in 1 word, and the building may be in multiple words
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building = " ".join(word.split(" ")[:-1])
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room = word.split(" ")[-1]
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filter_rooms |= (Q(name__icontains=room) & Q(building__name__icontains=building))
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filters["rooms"] |= filter_rooms
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# Switch ports
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@ -252,7 +251,7 @@ def search_single_word(word, filters, user, start, end, user_state, aff):
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def apply_filters(filters, user, aff):
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""" Apply the filters constructed by search_single_word.
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""" Apply the filters constructed by search_single_query.
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It also takes into account the visual filters defined during
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the search query.
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"""
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@ -305,53 +304,117 @@ def apply_filters(filters, user, aff):
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return results
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def get_words(query):
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"""Function used to split the uery in different words to look for.
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The rules are simple :
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def search_single_query(query, filters, user, start, end, user_state, aff):
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""" Handle different queries an construct the correct filters using
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search_single_word"""
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if query["operator"] == "+":
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# Special queries with "+" operators should use & rather than |
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for q in query["subqueries"]:
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# Construct an independent filter for each subquery
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subfilters = empty_filters()
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subfilters = search_single_word(q, subfilters, user, start, end, user_state, aff)
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# Apply the new filter
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for field in filter_fields():
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filters[field] &= subfilters[field]
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return filters
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# Handle standard queries
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q = query["text"]
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return search_single_word(q, filters, user, start, end, user_state, aff)
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def create_queries(query):
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"""Function used to split the query in different words to look for.
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The rules are the following :
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- anti-slash ('\\') is used to escape characters
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- anything between quotation marks ('"') is kept intact (not
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interpreted as separators) excepts anti-slashes used to escape
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Values in between quotation marks are not searched accross
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multiple field in the database (contrary to +)
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- spaces (' ') and commas (',') are used to separated words
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- "+" signs are used as "and" operators
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"""
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# A dict representing the different queries extracted from the user's text
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queries = []
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words = []
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i = 0
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# Format: {
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# "text": "", # Content of the query
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# "operator": None, # Whether a special char ("+") was used
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# "subqueries": None # When splitting the query in subparts (ex when using "+")
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# }
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current_query = None
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# Whether the query is between "
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keep_intact = False
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# Whether the previous char was a \
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escaping_char = False
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for char in query:
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if i >= len(words):
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if current_query is None:
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# We are starting a new word
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words.append("")
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current_query = { "text": "", "operator": None, "subqueries": None }
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if escaping_char:
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# The last char war a \ so we escape this char
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escaping_char = False
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words[i] += char
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current_query["text"] += char
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continue
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if char == "\\":
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# We need to escape the next char
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escaping_char = True
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continue
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if char == '"':
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# Toogle the keep_intact state, if true, we are between two "
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keep_intact = not keep_intact
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continue
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if keep_intact:
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# If we are between two ", ignore separators
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words[i] += char
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current_query["text"] += char
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continue
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if char == "+":
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# If we encouter a + outside of ", we replace it with a space
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words[i] += " "
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# Can't sart a query with a "+", consider it escaped
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if len(current_query["text"]) == 0:
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current_query["text"] = char
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continue
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# Build a slightly more complicate data structure
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# This is need for queries like '"A B"+C'
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if current_query["operator"] is None:
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current_query["operator"] = "+"
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current_query["subqueries"] = []
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current_query["subqueries"].append(current_query["text"])
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current_query["text"] = ""
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continue
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if char == " " or char == ",":
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# If we encouter a separator outside of ", we create a new word
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if words[i] is not "":
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i += 1
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continue
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# If we haven't encountered any special case, add the char to the word
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words[i] += char
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return words
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if len(current_query["text"]) == 0:
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# Discard empty queries
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continue
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if current_query["operator"] is not None:
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# If we were building a special structure, finish building it
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current_query["subqueries"].append(current_query["text"])
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current_query["text"] = ""
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# Save the query and start a new one
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queries.append(current_query)
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current_query = None
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continue
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# If we haven't encountered any special case, add the char to the word
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current_query["text"].append(char)
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return queries
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def get_results(query, request, params):
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@ -365,22 +428,12 @@ def get_results(query, request, params):
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user_state = params.get("u", initial_choices(CHOICES_USER))
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aff = params.get("a", initial_choices(CHOICES_AFF))
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filters = {
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"users": Q(),
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"clubs": Q(),
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"machines": Q(),
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"factures": Q(),
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"bans": Q(),
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"whitelists": Q(),
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"rooms": Q(),
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"ports": Q(),
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"switches": Q(),
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}
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filters = empty_filters()
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words = get_words(query)
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for word in words:
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filters = search_single_word(
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word, filters, request.user, start, end, user_state, aff
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queries = create_queries(query)
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for query in queries:
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filters = search_single_query(
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query, filters, request.user, start, end, user_state, aff
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)
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results = apply_filters(filters, request.user, aff)
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