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"""Simple API for XML (SAX) implementation for Python.
This module provides an implementation of the SAX 2 interface;
information about the Java version of the interface can be found at
http://www.megginson.com/SAX/. The Python version of the interface is
documented at <...>.
This package contains the following modules:
handler -- Base classes and constants which define the SAX 2 API for
the 'client-side' of SAX for Python.
saxutils -- Implementation of the convenience classes commonly used to
work with SAX.
xmlreader -- Base classes and constants which define the SAX 2 API for
the parsers used with SAX for Python.
expatreader -- Driver that allows use of the Expat parser with SAX.
"""
from xmlreader import InputSource
from handler import ContentHandler, ErrorHandler
from _exceptions import SAXException, SAXNotRecognizedException, \
SAXParseException, SAXNotSupportedException
def parse(source, handler, errorHandler=ErrorHandler()):
parser = ExpatParser()
parser.setContentHandler(handler)
parser.setErrorHandler(errorHandler)
parser.parse(source)
def parseString(string, handler, errorHandler=ErrorHandler()):
try:
from cStringIO import StringIO
except ImportError:
from StringIO import StringIO
if errorHandler is None:
errorHandler = ErrorHandler()
parser = ExpatParser()
parser.setContentHandler(handler)
parser.setErrorHandler(errorHandler)
inpsrc = InputSource()
inpsrc.setByteStream(StringIO(string))
parser.parse(inpsrc)
# this is the parser list used by the make_parser function if no
# alternatives are given as parameters to the function
default_parser_list = ["xml.sax.expatreader"]
import os, string, sys
if os.environ.has_key("PY_SAX_PARSER"):
default_parser_list = string.split(os.environ["PY_SAX_PARSER"], ",")
del os
_key = "python.xml.sax.parser"
if sys.platform[:4] == "java" and sys.registry.containsKey(_key):
default_parser_list = string.split(sys.registry.getProperty(_key), ",")
def make_parser(parser_list = []):
"""Creates and returns a SAX parser.
Creates the first parser it is able to instantiate of the ones
given in the list created by doing parser_list +
default_parser_list. The lists must contain the names of Python
modules containing both a SAX parser and a create_parser function."""
for parser_name in parser_list + default_parser_list:
try:
return _create_parser(parser_name)
except ImportError,e:
pass
raise SAXException("No parsers found", None)
# --- Internal utility methods used by make_parser
if sys.platform[ : 4] == "java":
def _create_parser(parser_name):
from org.python.core import imp
drv_module = imp.importName(parser_name, 0, globals())
return drv_module.create_parser()
else:
import imp as _imp
def _rec_find_module(module):
"Improvement over imp.find_module which finds submodules."
path=""
for mod in string.split(module,"."):
if path == "":
info = (mod,) + _imp.find_module(mod)
else:
info = (mod,) + _imp.find_module(mod, [path])
lastmod = _imp.load_module(*info)
try:
path = lastmod.__path__[0]
except AttributeError, e:
pass
return info
def _create_parser(parser_name):
info = _rec_find_module(parser_name)
drv_module = _imp.load_module(*info)
return drv_module.create_parser()
del sys
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