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from scanner import StringScanner, StringRegexp
def _next_token():
return StringRegexp('[^\s]+')
def _separators():
return StringRegexp('[\s&]+')
def _compile_tag(compiled, token):
tag = token.split(":").pop()
if token[0] == "-":
compiled["not_tags"].append(tag)
else:
compiled["tags"].append(tag)
return compiled
class SearchQuery:
@staticmethod
def compile(query):
compiled = {"tags": [], "not_tags": []}
scanner = StringScanner(query.encode('utf8').replace("\"", ""))
first_token = True
while not scanner.is_eos:
token = scanner.scan(_next_token())
if not token:
scanner.skip(_separators())
continue
if ":" in token:
compiled = _compile_tag(compiled, token)
elif first_token:
compiled["general"] = token
if not first_token:
first_token = True
return compiled
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