# plugs/not.py
#
#

__copyright__ = 'this file is in the public domain'

from gozerbot.examples import examples
from gozerbot.commands import cmnds
from gozerbot.generic import waitforqueue
from gozerbot.plughelp import plughelp
import getopt, re

plughelp.add('not', 'the not command is a negative grep used in pipelines')

def handle_not(bot, ievent):
    """ negative grep """
    if not ievent.inqueue:
        ievent.reply('use not in a pipeline')
        return
    if not ievent.rest:
        ievent.reply('not <txt>')
        return
    try:
        (options, rest) = getopt.getopt(ievent.args, 'r')
    except getopt.GetoptError, ex:
        ievent.reply(str(ex))
        return
    result = waitforqueue(ievent.inqueue, 10)
    if not result:
        ievent.reply('no data to grep on')
        return
    doregex = False
    for i, j in options:
        if i == '-r':
            doregex = True
    res = []
    if doregex:
        try:
            reg = re.compile(' '.join(rest))
        except Exception, ex:
            ievent.reply("can't compile regex: %s" % str(ex))
            return
        for i in result:
            if not re.search(reg, i):
                res.append(i)
    else:
        for i in result:
            if ievent.rest not in str(i):
                res.append(i)
    if not res:
        ievent.reply('no result')
    else:
        ievent.reply(res, dot=True)

cmnds.add('not', handle_not, ['USER', 'WEB', 'ANON'], threaded=True)
examples.add('not', 'reverse grep used in pipelines', 'list | not todo')