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from scanner import StringScanner, StringRegexp
import re
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": [], "general": []}
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"].append(token)
if not first_token:
first_token = True
compiled["general"] = ' '.join(compiled["general"])
return SearchQuery(compiled)
def __init__(self, compiled):
self.compiled = compiled
def test(self, mail):
if 'all' in self.compiled.get('tags'):
return True
if set(self.compiled.get('not_tags')).intersection(set(mail.tags)):
return False
if set(self.compiled.get('tags')).intersection(set(mail.tags)):
return True
if self.compiled.get('general'):
search_terms = re.compile(
self.compiled['general'],
flags=re.IGNORECASE)
if search_terms.search(mail.subject+' '+mail.body):
return True
if not [v for v in self.compiled.values() if v]:
return True
return False
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