You can not select more than 25 topics
Topics must start with a letter or number, can include dashes ('-') and can be up to 35 characters long.
92 lines
3.4 KiB
92 lines
3.4 KiB
# Copyright (c) 2011 Duncan Fordyce, Jimmy Cao |
|
# Permission is hereby granted, free of charge, to any person obtaining a copy |
|
# of this software and associated documentation files (the "Software"), to deal |
|
# in the Software without restriction, including without limitation the rights |
|
# to use, copy, modify, merge, publish, distribute, sublicense, and/or sell |
|
# copies of the Software, and to permit persons to whom the Software is |
|
# furnished to do so, subject to the following conditions: |
|
# The above copyright notice and this permission notice shall be included in |
|
# all copies or substantial portions of the Software. |
|
# THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR |
|
# IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY, |
|
# FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL THE |
|
# AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER |
|
# LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM, |
|
# OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN |
|
# THE SOFTWARE. |
|
|
|
import logging |
|
|
|
from oyoyo.ircevents import generated_events, protocol_events,\ |
|
all_events, numeric_events |
|
|
|
|
|
def parse_raw_irc_command(element): |
|
""" |
|
This function parses a raw irc command and returns a tuple |
|
of (prefix, command, args). |
|
The following is a psuedo BNF of the input text: |
|
|
|
<message> ::= [':' <prefix> <SPACE> ] <command> <params> <crlf> |
|
<prefix> ::= <servername> | <nick> [ '!' <user> ] [ '@' <host> ] |
|
<command> ::= <letter> { <letter> } | <number> <number> <number> |
|
<SPACE> ::= ' ' { ' ' } |
|
<params> ::= <SPACE> [ ':' <trailing> | <middle> <params> ] |
|
|
|
<middle> ::= <Any *non-empty* sequence of octets not including SPACE |
|
or NUL or CR or LF, the first of which may not be ':'> |
|
<trailing> ::= <Any, possibly *empty*, sequence of octets not including |
|
NUL or CR or LF> |
|
|
|
<crlf> ::= CR LF |
|
""" |
|
parts = element.strip().split(bytes(" ", "utf_8")) |
|
if parts[0].startswith(bytes(':', 'utf_8')): |
|
prefix = parts[0][1:] |
|
command = parts[1] |
|
args = parts[2:] |
|
else: |
|
prefix = None |
|
command = parts[0] |
|
args = parts[1:] |
|
|
|
if command.isdigit(): |
|
try: |
|
command = numeric_events[command] |
|
except KeyError: |
|
logging.warn('unknown numeric event {0}'.format(command)) |
|
command = command.lower() |
|
if isinstance(command, bytes): command = command.decode("utf_8") |
|
|
|
if args[0].startswith(bytes(':', 'utf_8')): |
|
args = [bytes(" ", "utf_8").join(args)[1:]] |
|
else: |
|
for idx, arg in enumerate(args): |
|
if arg.startswith(bytes(':', 'utf_8')): |
|
args = args[:idx] + [bytes(" ", 'utf_8').join(args[idx:])[1:]] |
|
break |
|
|
|
return (prefix, command, args) |
|
|
|
|
|
def parse_nick(name): |
|
""" parse a nickname and return a tuple of (nick, mode, user, host) |
|
|
|
<nick> [ '!' [<mode> = ] <user> ] [ '@' <host> ] |
|
""" |
|
|
|
try: |
|
nick, rest = name.split('!') |
|
except ValueError: |
|
return (name, None, None, None) |
|
try: |
|
mode, rest = rest.split('=') |
|
except ValueError: |
|
mode, rest = None, rest |
|
try: |
|
user, host = rest.split('@') |
|
except ValueError: |
|
return (nick, mode, rest, None) |
|
|
|
return (nick, mode, user, host) |
|
|
|
|