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# Licensed to the Apache Software Foundation (ASF) under one
# or more contributor license agreements. See the NOTICE file
# distributed with this work for additional information
# regarding copyright ownership. The ASF licenses this file
# to you under the Apache License, Version 2.0 (the
# "License"); you may not use this file except in compliance
# with the License. You may obtain a copy of the License at
#
# http://www.apache.org/licenses/LICENSE-2.0
#
# Unless required by applicable law or agreed to in writing,
# software distributed under the License is distributed on an
# "AS IS" BASIS, WITHOUT WARRANTIES OR CONDITIONS OF ANY
# KIND, either express or implied. See the License for the
# specific language governing permissions and limitations
# under the License.
# Return a list of name value pairs that match a name
def get(r, n, l):
def isList(v):
if getattr(v, '__iter__', False) == False:
return False
if isinstance(v, basestring) or isinstance(v, dict):
return False
return True
def isAssoc(v):
return isList(v) and len(v) == 2 and isinstance(v[0], basestring) and v[0][0:1] == "'"
def lookup(nv, lv):
if lv == ():
return ()
# Check if list element is a name value pair assoc
a = lv[0]
if not isAssoc(a):
return lookup(nv, lv[1:])
# Got a match, return it and lookup rest of the list
an = "'" + a[0][2:] if a[0][0:2] == "'@" else a[0]
if an == nv:
return (a,) + lookup(nv, lv[1:])
# No match, lookup rest of the list
return lookup(nv, lv[1:])
def qsymbol(x):
if not isinstance(x, basestring):
return x
return x if x[0:1] == "'" else "'" + x
nv = n.get(r)
lv = l.get(r)
return lookup(qsymbol(nv), () if lv is None else lv)
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