69 lines
1.8 KiB
Python
69 lines
1.8 KiB
Python
|
"""String dispatch class to match regexps and dispatch commands.
|
||
|
|
"""
|
||
|
|
|
||
|
|
# Stdlib imports
|
||
|
|
import re
|
||
|
|
|
||
|
|
# Our own modules
|
||
|
|
from IPython.core.hooks import CommandChainDispatcher
|
||
|
|
|
||
|
|
# Code begins
|
||
|
|
class StrDispatch(object):
|
||
|
|
"""Dispatch (lookup) a set of strings / regexps for match.
|
||
|
|
|
||
|
|
Example:
|
||
|
|
|
||
|
|
>>> dis = StrDispatch()
|
||
|
|
>>> dis.add_s('hei',34, priority = 4)
|
||
|
|
>>> dis.add_s('hei',123, priority = 2)
|
||
|
|
>>> dis.add_re('h.i', 686)
|
||
|
|
>>> print(list(dis.flat_matches('hei')))
|
||
|
|
[123, 34, 686]
|
||
|
|
"""
|
||
|
|
|
||
|
|
def __init__(self):
|
||
|
|
self.strs = {}
|
||
|
|
self.regexs = {}
|
||
|
|
|
||
|
|
def add_s(self, s, obj, priority= 0 ):
|
||
|
|
""" Adds a target 'string' for dispatching """
|
||
|
|
|
||
|
|
chain = self.strs.get(s, CommandChainDispatcher())
|
||
|
|
chain.add(obj,priority)
|
||
|
|
self.strs[s] = chain
|
||
|
|
|
||
|
|
def add_re(self, regex, obj, priority= 0 ):
|
||
|
|
""" Adds a target regexp for dispatching """
|
||
|
|
|
||
|
|
chain = self.regexs.get(regex, CommandChainDispatcher())
|
||
|
|
chain.add(obj,priority)
|
||
|
|
self.regexs[regex] = chain
|
||
|
|
|
||
|
|
def dispatch(self, key):
|
||
|
|
""" Get a seq of Commandchain objects that match key """
|
||
|
|
if key in self.strs:
|
||
|
|
yield self.strs[key]
|
||
|
|
|
||
|
|
for r, obj in self.regexs.items():
|
||
|
|
if re.match(r, key):
|
||
|
|
yield obj
|
||
|
|
else:
|
||
|
|
#print "nomatch",key # dbg
|
||
|
|
pass
|
||
|
|
|
||
|
|
def __repr__(self):
|
||
|
|
return "<Strdispatch %s, %s>" % (self.strs, self.regexs)
|
||
|
|
|
||
|
|
def s_matches(self, key):
|
||
|
|
if key not in self.strs:
|
||
|
|
return
|
||
|
|
for el in self.strs[key]:
|
||
|
|
yield el[1]
|
||
|
|
|
||
|
|
def flat_matches(self, key):
|
||
|
|
""" Yield all 'value' targets, without priority """
|
||
|
|
for val in self.dispatch(key):
|
||
|
|
for el in val:
|
||
|
|
yield el[1] # only value, no priority
|
||
|
|
return
|