86 lines
2.9 KiB
Python
86 lines
2.9 KiB
Python
"""Filter messages, displaying lines matching a pattern"""
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# PYTHON STUFFS #######################################################
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import re
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from nemubot import context
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from nemubot.exception import IMException
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from nemubot.hooks import hook
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from nemubot.message import Command, Text
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from nemubot.module.more import Response
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# MODULE CORE #########################################################
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def grep(fltr, cmd, msg, icase=False, only=False):
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"""Perform a grep like on known nemubot structures
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Arguments:
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fltr -- The filter regexp
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cmd -- The subcommand to execute
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msg -- The original message
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icase -- like the --ignore-case parameter of grep
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only -- like the --only-matching parameter of grep
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"""
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fltr = re.compile(fltr, re.I if icase else 0)
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for r in context.subtreat(context.subparse(msg, cmd)):
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if isinstance(r, Response):
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for i in range(len(r.messages) - 1, -1, -1):
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if isinstance(r.messages[i], list):
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for j in range(len(r.messages[i]) - 1, -1, -1):
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res = fltr.match(r.messages[i][j])
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if not res:
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r.messages[i].pop(j)
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elif only:
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r.messages[i][j] = res.group(1) if fltr.groups else res.group(0)
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if len(r.messages[i]) <= 0:
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r.messages.pop(i)
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elif isinstance(r.messages[i], str):
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res = fltr.match(r.messages[i])
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if not res:
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r.messages.pop(i)
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elif only:
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r.messages[i] = res.group(1) if fltr.groups else res.group(0)
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yield r
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elif isinstance(r, Text):
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res = fltr.match(r.message)
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if res:
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if only:
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r.message = res.group(1) if fltr.groups else res.group(0)
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yield r
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else:
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yield r
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# MODULE INTERFACE ####################################################
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@hook.command("grep",
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help="Display only lines from a subcommand matching the given pattern",
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help_usage={"PTRN !SUBCMD": "Filter SUBCMD command using the pattern PTRN"},
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keywords={
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"nocase": "Perform case-insensitive matching",
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"only": "Print only the matched parts of a matching line",
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})
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def cmd_grep(msg):
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if len(msg.args) < 2:
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raise IMException("Please provide a filter and a command")
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only = "only" in msg.kwargs
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l = [m for m in grep(msg.args[0] if msg.args[0][0] == "^" else ".*?(" + msg.args[0] + ").*?",
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" ".join(msg.args[1:]),
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msg,
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icase="nocase" in msg.kwargs,
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only=only) if m is not None]
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if len(l) <= 0:
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raise IMException("Pattern not found in output")
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return l
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