h/plugins/remember.py

112 lines
3.0 KiB
Python

"""
remember.py: written by Scaevolus 2010
"""
import string
import re
from util import hook
def db_init(db):
db.execute("create table if not exists memory(chan, word, data, nick,"
" primary key(chan, word))")
db.commit()
def get_memory(db, chan, word):
row = db.execute("select data from memory where chan=? and word=lower(?)",
(chan, word)).fetchone()
if row:
return row[0]
else:
return None
@hook.command
@hook.command("r")
def remember(inp, nick='', chan='', db=None):
".remember <word> [+]<data> s/<before>/<after> -- maps word to data in the memory, or "
" does string replacement (not regex)"
db_init(db)
append = False
replacement = False
try:
head, tail = inp.split(None, 1)
except ValueError:
return remember.__doc__
data = get_memory(db, chan, head)
_head, _tail = data.split(None, 1)
if tail[0] == '+':
append = True
# ignore + symbol
new = tail[1:]
# data is stored with the input so ignore it when re-adding it
if len(tail) > 1 and tail[1] in (string.punctuation + ' '):
tail = _tail + new
else:
tail = _tail + ' ' + new
if len(tail) > 2 and tail[0] == 's' and tail[1] in string.punctuation:
args = tail.split(tail[1])
if len(args) == 4 and args[3] == '':
args = args[:-1]
if len(args) == 3:
replacement = True
_, src, dst = args
new_data = _tail.replace(src, dst)
if new_data == _tail:
return 'replacement left data unchanged'
tail = new_data
else:
return 'invalid replacement syntax -- try s$foo$bar instead?'
db.execute("replace into memory(chan, word, data, nick) values"
" (?,lower(?),?,?)", (chan, head, head + ' ' + tail, nick))
db.commit()
if data:
if append:
return "appending %s to %s" % (new, data.replace('"', "''"))
elif replacement:
return "replacing '%s' with '%s' in %s" % (src, dst, _tail)
else:
return 'forgetting "%s", remembering this instead.' % \
data.replace('"', "''")
else:
return 'done.'
@hook.command
@hook.command("f")
def forget(inp, chan='', db=None):
".forget <word> -- forgets the mapping that word had"
db_init(db)
data = get_memory(db, chan, inp)
if not chan.startswith('#'):
return "I won't forget anything in private."
if data:
db.execute("delete from memory where chan=? and word=lower(?)",
(chan, inp))
db.commit()
return 'forgot `%s`' % data.replace('`', "'")
else:
return "I don't know about that."
@hook.regex(r'^\? ?(.+)')
def question(inp, chan='', say=None, db=None):
"?<word> -- shows what data is associated with word"
db_init(db)
data = get_memory(db, chan, inp.group(1).strip())
if data:
say(data)