dwc_network_server_emulator/other/sql.py
2016-07-21 19:49:33 +04:00

55 lines
1.3 KiB
Python

"""DWC Network Server Emulator
Copyright (C) 2016 Sepalani
This program is free software: you can redistribute it and/or modify
it under the terms of the GNU Affero General Public License as
published by the Free Software Foundation, either version 3 of the
License, or (at your option) any later version.
This program is distributed in the hope that it will be useful,
but WITHOUT ANY WARRANTY; without even the implied warranty of
MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
GNU Affero General Public License for more details.
You should have received a copy of the GNU Affero General Public License
along with this program. If not, see <http://www.gnu.org/licenses/>.
"""
class Infix(object):
"""Infix operator class.
A |Infix| B
"""
def __init__(self, function):
self.function = function
def __ror__(self, other):
return Infix(lambda x, self=self: self.function(other, x))
def __or__(self, other):
return self.function(other)
def sql_like(a, b):
"""SQL LIKE command.
TODO:
- Handle % character
- Handle _ character
- Handle escape character
- Handle []
- Handle [^]
"""
a = str(a).lower()
b = str(b).lower()
return a == b
LIKE = Infix(sql_like)
sql_commands = {
"LIKE": LIKE
}