Viewing file:  drv_xmlproc.py (4.29 KB) -rw-r--r--
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"""
A SAX driver for xmlproc
$Id: drv_xmlproc.py,v 1.13 2001/12/30 12:13:45 loewis Exp $
"""
version="0.95"
from xml.sax import saxlib, saxutils
from xml.parsers.xmlproc import xmlproc
import os
# --- SAX_XPParser
class SAX_XPParser(saxlib.Parser,xmlproc.Application,xmlproc.DTDConsumer,
xmlproc.ErrorHandler,xmlproc.PubIdResolver):
def __init__(self):
saxlib.Parser.__init__(self)
self.reset()
self.ns_separator=" "
self.locator=1
self.is_parsing=0
self.stop_on_error=1
def parse(self,sysID):
self.reset()
try:
self.is_parsing=1
self.parser.parse_resource(sysID)
finally:
self.is_parsing=0
def parseFile(self,file):
self.reset()
try:
self.is_parsing=1
self.parser.read_from(file)
self.parser.flush()
self.parser.parseEnd()
finally:
self.is_parsing=0
def _create_parser(self):
return xmlproc.XMLProcessor()
def setLocale(self, locale):
try:
self.parser.set_error_language(locale)
except KeyError:
raise saxlib.SAXNotSupportedException("Locale '%s' not supported" % locale)
# --- data event methods
def doc_start(self):
if self.locator:
self.doc_handler.setDocumentLocator(self)
self.doc_handler.startDocument()
def doc_end(self):
self.doc_handler.endDocument()
def handle_data(self,data,start,end):
self.doc_handler.characters(data,start,end-start)
def handle_ignorable_data(self,data,start,end):
self.doc_handler.ignorableWhitespace(data,start,end-start)
def handle_pi(self, target, data):
self.doc_handler.processingInstruction(target,data)
def handle_start_tag(self, name, attrs):
self.doc_handler.startElement(name,saxutils.AttributeMap(attrs))
def handle_end_tag(self, name):
self.doc_handler.endElement(name)
# --- pubid resolution
def resolve_entity_pubid(self,pubid,sysid):
return self.ent_handler.resolveEntity(pubid,sysid)
def resolve_doctype_pubid(self,pubid,sysid):
return self.ent_handler.resolveEntity(pubid,sysid)
# --- error handling
def warning(self,msg):
self.err_handler.warning(saxlib.SAXParseException(msg,None,self))
def error(self,msg):
self.err_handler.error(saxlib.SAXParseException(msg,None,self))
def fatal(self,msg):
self.err_handler.fatalError(saxlib.SAXParseException(msg,None,self))
# --- location handling
def getColumnNumber(self):
return self.parser.get_column()
def getLineNumber(self):
return self.parser.get_line()
def getSystemId(self):
return self.parser.get_current_sysid()
# --- DTD parsing
def new_external_entity(self,name,pubid,sysid,ndata):
if ndata!="":
self.dtd_handler.unparsedEntityDecl(name,pubid,sysid,ndata)
def new_notation(self,name,pubid,sysid):
self.dtd_handler.notationDecl(name,pubid,sysid)
# --- entity events
def resolve_entity(self,pubid,sysid):
newsysid=self.ent_handler.resolveEntity(pubid,sysid)
if newsysid==None:
return sysid
else:
return newsysid
# --- EXPERIMENTAL PYTHON SAX EXTENSIONS:
def get_parser_name(self):
return "xmlproc"
def get_parser_version(self):
return xmlproc.version
def get_driver_version(self):
return version
def is_validating(self):
return 0
def is_dtd_reading(self):
return 1
def reset(self):
if hasattr(self, "parser"):
self.parser.deref()
self.parser=self._create_parser()
self.parser.set_application(self)
self.parser.set_error_handler(self)
self.parser.set_pubid_resolver(self)
self.parser.set_dtd_listener(self)
self.parser.reset()
def feed(self,data):
self.parser.feed(data)
def close(self):
self.parser.close()
self.parser.deref()
# Dereferencing to avoid circular references (grrrr)
self.err_handler = self.dtd_handler = self.doc_handler = None
self.parser = self.locator = self.ent_handler = None
# --- Global functions
def create_parser():
return SAX_XPParser()
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