54 lines
1.3 KiB
Python
54 lines
1.3 KiB
Python
#!/usr/bin/env python3
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# Usage:
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# _from=krebs statedir=. python sed-plugin.py 'dick butt'
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# _from=krebs statedir=. 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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d = shelve.open(join(environ['statedir'],'sed-plugin.shelve'),writeback=True)
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import re
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def is_regex(line):
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# TODO: match s/di\/ck/butt/ but not s/di/ck/butt/
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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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m = is_regex(line)
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if m:
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f,t,flagstr = m.groups()
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fn = f.replace('\/','/')
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tn = t.replace('\/','/')
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flags = 0
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count = 1
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if flagstr:
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if 'i' in flagstr:
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flags = re.IGNORECASE
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if 'g' in flagstr:
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count = 0
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else:
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flagstr = ''
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last = d.get(environ['_from'],None)
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if last:
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print(fn,tn,last)
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#print(re.sub(fn,tn,last,count=count,flags=flags))
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from subprocess import Popen,PIPE
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p = Popen(['sed','s/{}/{}/{}'.format(f,t,flagstr)],stdin=PIPE,stdout=PIPE )
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so,_ = p.communicate(last+"\n")
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if p.returncode:
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print("something went wrong when trying to process your regex")
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print(so)
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else:
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print("no last message")
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else:
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print("setting line")
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d[environ['_from']] = line
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d.close()
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