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"""
SAX driver for the sgmlop parser.
$Id: drv_sgmlop.py,v 1.10 2002/08/13 09:28:52 afayolle Exp $
"""
version="0.12"
from xml.parsers import sgmlop
from xml.sax import saxlib,saxutils
from xml.sax import SAXException
import urllib2,string
# --- Driver
class Parser(saxlib.Parser):
def __init__(self):
saxlib.Parser.__init__(self)
self.reset()
def setDocumentHandler(self, dh):
self.parser.register(self) # older version wanted ,1 arg
self.doc_handler=dh
def parse(self, url):
self.parseFile(urllib2.urlopen(url))
def parseFile(self, file):
self._parsing = 1
self.doc_handler.startDocument()
parser = self.parser
while 1:
data = file.read(16384)
if not data:
break
parser.feed(data)
self.close()
# --- SAX 1.0 METHODS
def handle_cdata(self, data):
self.doc_handler.characters(data,0,len(data))
def handle_data(self, data):
#ignore white space outside the toplevel element
if self._nesting == 0:
if string.strip(data)!="":
# It's not whitespace?
self.err_handler.error(SAXException(
"characters '%s' outside root element" % data))
return
self.doc_handler.characters(data,0,len(data))
def handle_proc(self, target, data):
if target=='xml':
# Don't report <?xml?> as a processing instruction
return
self.doc_handler.processingInstruction(target,data)
def handle_charref(self, charno):
if charno<256:
self.doc_handler.characters(chr(charno),0,1)
def finish_starttag(self, name, attrs):
self._nesting = self._nesting + 1
self.doc_handler.startElement(name,saxutils.AttributeMap(attrs))
def finish_endtag(self,name):
self._nesting = self._nesting - 1
self.doc_handler.endElement(name)
# --- EXPERIMENTAL PYTHON SAX EXTENSIONS
def get_parser_name(self):
return "sgmlop"
def get_parser_version(self):
return "Unknown"
def get_driver_version(self):
return version
def is_validating(self):
return 0
def is_dtd_reading(self):
return 0
def reset(self):
self.parser=sgmlop.XMLParser()
self._parsing=0
self._nesting=0
def feed(self,data):
if not self._parsing:
self.doc_handler.startDocument()
self._parsing=1
self.parser.feed(data)
def close(self):
self.parser.close()
self.doc_handler.endDocument()
# ----
def create_parser():
return Parser()
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