[Mono-list] Xml Entity Resolution

[Atsushi Eno]

Well, you are confused. You can't use XmlDocument.Load() even with
your blablaXmlReader. XmlTextReader.XmlResolver = null is just a
replacement to your class. The workaround (using ReadNode method)
is *still* required.

To summarize technical side:
- XmlDocument.Load() does need corresponding entity declarations
- XmlTextReader does not need corresponding entity.
- XmlTextReader does not ignore external DTD unless null XmlResolver
   is set.

Atsushi Eno

colin at breame.net wrote:
> Tried that (see below) but it still gets "System.Xml.XmlException:
> Reference to undeclared entity" exceptions.
> 
> Thanks again,
> C.
> 
> XmlDocument doc = new XmlDocument();
> XmlTextReader reader = new XmlTextReader(new
> StringReader(xml_text_with_entities));
> reader.XmlResolver = null;
> doc.Load(reader);
> 
> On Tue, 06 Mar 2007 06:07:02 +0900, "Atsushi Eno" <atsushi at ximian.com>
> said:
>> Well, you could just try XmlTextReader.XmlResolver = null here ...
>>
>> Atsushi Eno
>>
>> Colin John Nicholas Breame wrote:
>>> Hi,
>>>
>>> I've tried your solution with both XmlTextReader and XmlValidatingReader
>>> but I can't make it work.  The problem is that the XmlTextReader
>>> actually requires entities to be resolved.
>>>
>>> As a work around I've subclassed XmlTextReader to return false for
>>> CanResolveEntity, which seems to (at least initially) do the trick.  See
>>> below.
>>>
>>> Thanks
>>> C.
>>>
>>> using System.IO;
>>> using System.Xml;
>>>
>>> public class NonEntityResolvingXmlTextReader : XmlTextReader {
>>>   public NonResolvingXmlTextReader(TextReader reader) : base(reader) {
>>>   }
>>>
>>>   public override bool CanResolveEntity {
>>>     get {
>>>       return false;
>>>     }
>>>   }
>>> }
>>>
>>>
>>> On Mon, 05 Mar 2007 14:00:00 +0900, "Atsushi Eno" <atsushi at ximian.com>
>>> said:
>>>> Hi,
>>>>
>>>> If you skip the DTD, any entity references (except for &lt;, &gt;, 
>>>> &apos; and &quot;) are rejected during XmlDocument.Load().
>>>>
>>>> If you don't care such buggy document, you can try
>>>>
>>>> 	while (!reader.EOF)
>>>> 		doc.AppendChild (doc.ReadNode (reader));
>>>>
>>>> which does not reject unresolved entity references (funny, but
>>>> this is what .net System.Xml.dll does).
>>>>
>>>> Atsushi Eno
>>>>
>>>> colin at breame.net wrote:
>>>>> I'm trying to turn off entity resolution using XmlDocument as I don't
>>>>> have a DTD and I'm getting "System.Xml.XmlException: Cannot resolve
>>>>> entity without DTD".  I can't see an explicit "ResolveEntity" property I
>>>>> could set to off.  Any ideas?  Is there a mono specific way of doing
>>>>> this?
>>>>>
>>>>> Thanks
>>>>> Colin.
>>>>> _______________________________________________
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>>>>>
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>