59 lines
1.5 KiB
Python
Executable File
59 lines
1.5 KiB
Python
Executable File
#!/usr/bin/env python3
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# Usage:
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# _from=krebs state_dir=. python sed-plugin.py 'dick butt'
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# _from=krebs state_dir=. python sed-plugin.py 's/t/l/g'
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# > dick bull
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import shelve
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from os import environ
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from os.path import join
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from sys import argv
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from time import sleep
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import re
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# try to open the shelve file until it succeeds
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while True:
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try:
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d = shelve.open(
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join(environ['state_dir'], 'sed-plugin.shelve'),
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writeback=True
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)
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break
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except: # noqa: E722
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sleep(0.2)
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usr = environ['_from']
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def is_regex(line):
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myre = re.compile(r'^s/(?:\\/|[^/])+/(?:\\/|[^/])*/[ig]?$')
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return myre.match(line)
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line = argv[1]
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if is_regex(line):
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last = d.get(usr, None)
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if last:
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from subprocess import Popen, PIPE
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p = Popen(['sed', line], stdin=PIPE, stdout=PIPE, stderr=PIPE)
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so, se = p.communicate(bytes("{}\n".format(last), "UTF-8"))
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if p.returncode:
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print("something went wrong when trying to process your regex: {}".format(line.strip()))
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ret = so.decode()
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if len(ret) > 512:
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print('message to long, skipped')
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elif len(ret.split('\n')) > 5:
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print('to many lines, skipped')
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else:
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if last.strip() != ret.strip():
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print("\x02{}\x02 meant: {}".format(usr, ret.strip()))
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if ret:
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d[usr] = ret
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else:
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print("no last message")
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else:
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d[usr] = line
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d.close()
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