def join(context, nodeset, delim=None):
comps = map(lambda x: Conversions.StringValue(x), nodeset)
if delim:
return string.joinfields(comps, delim)
else:
return string.joinfields(comps)
def if_function(context, cond, v1, v2):
if Conversions.BooleanValue(cond):
return v1
else:
return v2
def Evaluate(context, expr):
import xml.xpath
return xml.xpath.Evaluate(Conversions.StringValue(st), context=context)
def EscapeUrl(context, url):
"Escape illegal characters in a URL"
return urllib.quote(Conversions.StringValue(url))
def StringMd5(context, str):
s = Conversions.StringValue(str)
return longhash(s)
def evaluate(self, context):
"""returns a number"""
exp = self._exp.evaluate(context)
exp = Conversions.NumberValue(exp)
rt = exp * -1.0
return rt
def evaluate(self, context):
rt = Conversions.BooleanEvaluate(self._left, context)
if rt:
rt = Conversions.BooleanEvaluate(self._right, context)
return rt