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# -*- coding: utf-8 -*-
""" IPython extension: new prefilters for output grabbing
Provides
var = %magic blah blah
var = !ls
"""
from IPython.core import ipapi
from IPython.core.error import TryNext
from IPython.utils.text import make_quoted_expr
from IPython.utils.genutils import *
ip = ipapi.get()
import re
def hnd_magic(line,mo):
""" Handle a = %mymagic blah blah """
var = mo.group('varname')
cmd = mo.group('cmd')
expr = make_quoted_expr(cmd)
return itpl('$var = get_ipython().magic($expr)')
def hnd_syscmd(line,mo):
""" Handle a = !ls """
var = mo.group('varname')
cmd = mo.group('cmd')
expr = make_quoted_expr(itpl("sc -l =$cmd"))
return itpl('$var = get_ipython().magic($expr)')
def install_re_handler(pat, hnd):
ip.meta.re_prefilters.append((re.compile(pat), hnd))
def init_handlers():
ip.meta.re_prefilters = []
install_re_handler('(?P<varname>[\w\.]+)\s*=\s*%(?P<cmd>.*)',
hnd_magic
)
install_re_handler('(?P<varname>[\w\.]+)\s*=\s*!(?P<cmd>.*)',
hnd_syscmd
)
init_handlers()
def regex_prefilter_f(self,line):
for pat, handler in ip.meta.re_prefilters:
mo = pat.match(line)
if mo:
return handler(line,mo)
raise TryNext
ip.set_hook('input_prefilter', regex_prefilter_f)
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