1
2
3
4
5
6
7
8
9
10
11
12
13
14
15
16
17
18
19
20
21
22
23
24
25
26
27
28
29
30
31
32
33
34
35
36
37
38
39
40
41
42
43
44
45
46
47
48
49
50
51
|
# $Id$
import xml.sax
def snarf_attribute(obj, attrs, key, func=None):
"""
Utility function to consolidate the steps needed to extract a field
from the SAX XML parse and insert it as an object attribute of the
same name.
"""
if isinstance(key, list) or isinstance(key, tuple):
for k in key:
snarf_attribute(obj, attrs, k, func)
else:
try:
val = attrs.getValue(key).encode("ascii")
if func:
val = func(val)
except KeyError:
val = None
setattr(obj, key, val)
class handler(xml.sax.handler.ContentHandler):
"""
SAX handler for RPKI protocols. Handles a few tasks
common to all of these protocols, needs to be subtyped
to handle protocol-specific details.
"""
def __init__(self):
self.text = ""
self.obj = None
def startElementNS(self, name, qname, attrs):
return self.startElement(name[1], attrs)
def endElementNS(self, name, qname):
return self.endElement(name[1])
def characters(self, content):
self.text += content
def get_text(self):
val = self.text.encode("ascii")
self.text = ""
return val
def set_obj(self, obj):
assert self.obj is None
self.obj = obj
|
