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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": []}
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 SearchQuery(compiled)
def __init__(self, compiled):
self.compiled = compiled
def test(self, mail):
if set(self.compiled.get('tags')).intersection(mail.tags) or 'all' in self.compiled.get('tags'):
return True
if self.compiled.get('general'):
search_terms = re.compile(self.compiled['general'])
if search_terms.match(mail.body) or search_terms.match(mail.subject):
return True
if not self.compiled.get('tags') and not self.compiled.get('not_tags'):
return True
return False
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