Updated to final Attributes interface (patch 101632).

This commit is contained in:
Lars Gustäbel 2000-09-24 18:39:23 +00:00
parent e84bf751bb
commit 32bf12eb8a
2 changed files with 71 additions and 12 deletions

View File

@ -20,6 +20,9 @@ from xml.sax._exceptions import *
from xml.parsers import expat
from xml.sax import xmlreader
AttributesImpl = xmlreader.AttributesImpl
AttributesNSImpl = xmlreader.AttributesNSImpl
# --- ExpatParser
class ExpatParser(xmlreader.IncrementalParser, xmlreader.Locator):
@ -31,7 +34,6 @@ class ExpatParser(xmlreader.IncrementalParser, xmlreader.Locator):
self._parser = None
self._namespaces = namespaceHandling
self._parsing = 0
self._attrs = xmlreader.AttributesImpl({}, {})
# XMLReader methods
@ -137,7 +139,7 @@ class ExpatParser(xmlreader.IncrementalParser, xmlreader.Locator):
# event handlers
def start_element(self, name, attrs):
self._cont_handler.startElement(name, self._attrs)
self._cont_handler.startElement(name, AttributesImpl(attrs))
def end_element(self, name):
self._cont_handler.endElement(name)
@ -147,12 +149,23 @@ class ExpatParser(xmlreader.IncrementalParser, xmlreader.Locator):
if len(pair) == 1:
pair = (None, name)
self._cont_handler.startElementNS(pair, None, self._attrs)
newattrs = {}
for (aname, value) in attrs.items():
apair = aname.split()
if len(apair) == 1:
apair = (None, aname)
else:
apair = tuple(apair)
newattrs[apair] = value
self._cont_handler.startElementNS(pair, None,
AttributesNSImpl(newattrs, {}))
def end_element_ns(self, name):
pair = name.split()
if len(pair) == 1:
name = (None, name)
pair = (None, name)
self._cont_handler.endElementNS(pair, None)

View File

@ -151,6 +151,7 @@ class IncrementalParser(XMLReader):
raise NotImplementedError("This method must be implemented!")
# ===== LOCATOR =====
class Locator:
"""Interface for associating a SAX event with a document
location. A locator object will return valid results only during
@ -173,11 +174,15 @@ class Locator:
"Return the system identifier for the current event."
return None
# --- AttributesImpl
# ===== ATTRIBUTESIMPL =====
class AttributesImpl:
def __init__(self, attrs, rawnames):
def __init__(self, attrs):
"""Non-NS-aware implementation.
attrs should be of the form {name : value}."""
self._attrs = attrs
self._rawnames = rawnames
def getLength(self):
return len(self._attrs)
@ -189,16 +194,23 @@ class AttributesImpl:
return self._attrs[name]
def getValueByQName(self, name):
return self._attrs[self._rawnames[name]]
return self._attrs[name]
def getNameByQName(self, name):
return self._rawnames[name]
if not self._attrs.has_key(name):
raise KeyError
return name
def getQNameByName(self, name):
if not self._attrs.has_key(name):
raise KeyError
return name
def getNames(self):
return self._attrs.keys()
def getQNames(self):
return self._rawnames.keys()
return self._attrs.keys()
def __len__(self):
return len(self._attrs)
@ -216,7 +228,7 @@ class AttributesImpl:
return self._attrs.get(name, alternative)
def copy(self):
return self.__class__(self._attrs, self._rawnames)
return self.__class__(self._attrs)
def items(self):
return self._attrs.items()
@ -224,12 +236,46 @@ class AttributesImpl:
def values(self):
return self._attrs.values()
# ===== ATTRIBUTESNSIMPL =====
class AttributesNSImpl(AttributesImpl):
def __init__(self, attrs, qnames):
"""NS-aware implementation.
attrs should be of the form {(ns_uri, lname): value, ...}.
qnames of the form {(ns_uri, lname): qname, ...}."""
self._attrs = attrs
self._qnames = qnames
def getValueByQName(self, name):
for (nsname, qname) in self._qnames.items():
if qname == name:
return self._attrs[nsname]
raise KeyError
def getNameByQName(self, name):
for (nsname, qname) in self._qnames.items():
if qname == name:
return nsname
raise KeyError
def getQNameByName(self, name):
return self._qnames[name]
def getQNames(self):
return self._qnames.values()
def copy(self):
return self.__class__(self._attrs, self._qnames)
def _test():
XMLReader()
IncrementalParser()
Locator()
AttributesImpl()
if __name__ == "__main__":
_test()