From ae43e5205d7eec667e86c6dbf6714ec2fc12cf26 Mon Sep 17 00:00:00 2001
From: =?utf8?q?Lars=20Gust=C3=A4bel?= <lars@gustaebel.de>
Date: Thu, 21 Sep 2000 08:34:04 +0000
Subject: [PATCH] Added the make_parser function (patch 101571).
---
Lib/xml/sax/__init__.py | 69 +++++++++++++++++++++++++++++++++++++++--
1 file changed, 67 insertions(+), 2 deletions(-)
diff --git a/Lib/xml/sax/__init__.py b/Lib/xml/sax/__init__.py
index 69c44add30..c6034367a1 100644
--- a/Lib/xml/sax/__init__.py
+++ b/Lib/xml/sax/__init__.py
@@ -22,7 +22,6 @@ expatreader -- Driver that allows use of the Expat parser with the
"""
from handler import ContentHandler, ErrorHandler
-from expatreader import ExpatParser
from _exceptions import SAXException, SAXNotRecognizedException, \
SAXParseException, SAXNotSupportedException
@@ -33,7 +32,6 @@ def parse(filename_or_stream, handler, errorHandler=ErrorHandler()):
parser.setErrorHandler(errorHandler)
parser.parse(filename_or_stream)
-
def parseString(string, handler, errorHandler=ErrorHandler()):
try:
from cStringIO import StringIO
@@ -46,3 +44,70 @@ def parseString(string, handler, errorHandler=ErrorHandler()):
parser.setContentHandler(handler)
parser.setErrorHandler(errorHandler)
parser.parse(StringIO(string))
+
+# 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 = apply(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 = apply(imp.load_module, info)
+ return drv_module.create_parser()
+
+del sys
--
2.40.0