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annotate roundup/cgi/TAL/XMLParser.py @ 2119:cc4667ef3f12

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Added the ability to toggle where error messages go. They either go to the user (default, for backwards compatibility), the dispatcher, or both. These are able to be toggled via settings in config.py. Please refer to upgrading.txt for more details. (And Richard, let me know if I've done anything wrong with this checkin. :))
author Eddie Parker <eparker@users.sourceforge.net>
date Thu, 25 Mar 2004 19:27:15 +0000
parents fc52d57c6c3e
children 8c2402a78bb0
Ignore whitespace changes - Everywhere: Within whitespace: At end of lines:
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1 ##############################################################################
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2 #
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3 # Copyright (c) 2001, 2002 Zope Corporation and Contributors.
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4 # All Rights Reserved.
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5 #
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6 # This software is subject to the provisions of the Zope Public License,
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7 # Version 2.0 (ZPL). A copy of the ZPL should accompany this distribution.
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8 # THIS SOFTWARE IS PROVIDED "AS IS" AND ANY AND ALL EXPRESS OR IMPLIED
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9 # WARRANTIES ARE DISCLAIMED, INCLUDING, BUT NOT LIMITED TO, THE IMPLIED
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10 # WARRANTIES OF TITLE, MERCHANTABILITY, AGAINST INFRINGEMENT, AND FITNESS
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11 # FOR A PARTICULAR PURPOSE
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12 #
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13 ##############################################################################
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14 """Generic expat-based XML parser base class.
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15
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16 Modified for Roundup 0.5 release:
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17
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18 - removed dependency on zLOG
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19
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20 """
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21 __docformat__ = 'restructuredtext'
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22
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23 class XMLParser:
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24
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25 ordered_attributes = 0
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26
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27 handler_names = [
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28 "StartElementHandler",
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29 "EndElementHandler",
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30 "ProcessingInstructionHandler",
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31 "CharacterDataHandler",
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32 "UnparsedEntityDeclHandler",
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33 "NotationDeclHandler",
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34 "StartNamespaceDeclHandler",
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35 "EndNamespaceDeclHandler",
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36 "CommentHandler",
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37 "StartCdataSectionHandler",
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38 "EndCdataSectionHandler",
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39 "DefaultHandler",
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40 "DefaultHandlerExpand",
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41 "NotStandaloneHandler",
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42 "ExternalEntityRefHandler",
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43 "XmlDeclHandler",
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44 "StartDoctypeDeclHandler",
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45 "EndDoctypeDeclHandler",
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46 "ElementDeclHandler",
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47 "AttlistDeclHandler"
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48 ]
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50 def __init__(self, encoding=None):
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51 self.parser = p = self.createParser()
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52 if self.ordered_attributes:
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53 try:
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54 self.parser.ordered_attributes = self.ordered_attributes
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55 except AttributeError:
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56 #zLOG.LOG("TAL.XMLParser", zLOG.INFO,
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57 # "Can't set ordered_attributes")
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58 self.ordered_attributes = 0
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59 for name in self.handler_names:
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60 method = getattr(self, name, None)
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61 if method is not None:
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62 try:
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63 setattr(p, name, method)
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64 except AttributeError:
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65 #zLOG.LOG("TAL.XMLParser", zLOG.PROBLEM,
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66 # "Can't set expat handler %s" % name)
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67 pass
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68
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69 def createParser(self, encoding=None):
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70 global XMLParseError
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71 try:
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72 from Products.ParsedXML.Expat import pyexpat
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73 XMLParseError = pyexpat.ExpatError
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74 return pyexpat.ParserCreate(encoding, ' ')
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75 except ImportError:
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76 from xml.parsers import expat
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77 XMLParseError = expat.ExpatError
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78 return expat.ParserCreate(encoding, ' ')
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79
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80 def parseFile(self, filename):
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81 self.parseStream(open(filename))
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82
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83 def parseString(self, s):
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84 self.parser.Parse(s, 1)
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85
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86 def parseURL(self, url):
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87 import urllib
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88 self.parseStream(urllib.urlopen(url))
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89
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90 def parseStream(self, stream):
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91 self.parser.ParseFile(stream)
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92
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93 def parseFragment(self, s, end=0):
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94 self.parser.Parse(s, end)
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