Premiere version : mise en route du suivi.
[auf_roundup.git] / roundup / cgi / TAL / .svn / text-base / XMLParser.py.svn-base
1 ##############################################################################
2 #
3 # Copyright (c) 2001, 2002 Zope Corporation and Contributors.
4 # All Rights Reserved.
5 #
6 # This software is subject to the provisions of the Zope Public License,
7 # Version 2.0 (ZPL).  A copy of the ZPL should accompany this distribution.
8 # THIS SOFTWARE IS PROVIDED "AS IS" AND ANY AND ALL EXPRESS OR IMPLIED
9 # WARRANTIES ARE DISCLAIMED, INCLUDING, BUT NOT LIMITED TO, THE IMPLIED
10 # WARRANTIES OF TITLE, MERCHANTABILITY, AGAINST INFRINGEMENT, AND FITNESS
11 # FOR A PARTICULAR PURPOSE
12 #
13 ##############################################################################
14 # Modifications for Roundup:
15 # 1. commented out zLOG references
16 """
17 Generic expat-based XML parser base class.
18 """
19
20 #import zLOG
21
22 class XMLParser:
23
24     ordered_attributes = 0
25
26     handler_names = [
27         "StartElementHandler",
28         "EndElementHandler",
29         "ProcessingInstructionHandler",
30         "CharacterDataHandler",
31         "UnparsedEntityDeclHandler",
32         "NotationDeclHandler",
33         "StartNamespaceDeclHandler",
34         "EndNamespaceDeclHandler",
35         "CommentHandler",
36         "StartCdataSectionHandler",
37         "EndCdataSectionHandler",
38         "DefaultHandler",
39         "DefaultHandlerExpand",
40         "NotStandaloneHandler",
41         "ExternalEntityRefHandler",
42         "XmlDeclHandler",
43         "StartDoctypeDeclHandler",
44         "EndDoctypeDeclHandler",
45         "ElementDeclHandler",
46         "AttlistDeclHandler"
47         ]
48
49     def __init__(self, encoding=None):
50         self.parser = p = self.createParser()
51         if self.ordered_attributes:
52             try:
53                 self.parser.ordered_attributes = self.ordered_attributes
54             except AttributeError:
55                 #zLOG.LOG("TAL.XMLParser", zLOG.INFO, 
56                 #         "Can't set ordered_attributes")
57                 self.ordered_attributes = 0
58         for name in self.handler_names:
59             method = getattr(self, name, None)
60             if method is not None:
61                 try:
62                     setattr(p, name, method)
63                 except AttributeError:
64                     #zLOG.LOG("TAL.XMLParser", zLOG.PROBLEM,
65                     #         "Can't set expat handler %s" % name)
66                     pass
67
68     def createParser(self, encoding=None):
69         global XMLParseError
70         try:
71             from Products.ParsedXML.Expat import pyexpat
72             XMLParseError = pyexpat.ExpatError
73             return pyexpat.ParserCreate(encoding, ' ')
74         except ImportError:
75             from xml.parsers import expat
76             XMLParseError = expat.ExpatError
77             return expat.ParserCreate(encoding, ' ')
78
79     def parseFile(self, filename):
80         self.parseStream(open(filename))
81
82     def parseString(self, s):
83         self.parser.Parse(s, 1)
84
85     def parseURL(self, url):
86         import urllib
87         self.parseStream(urllib.urlopen(url))
88
89     def parseStream(self, stream):
90         self.parser.ParseFile(stream)
91
92     def parseFragment(self, s, end=0):
93         self.parser.Parse(s, end)