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