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RE: Handling of significant whitespace in .NET XmlReader

• To: "Eckenberger Axel" <Extern.Eckenberger@k...>,<xml-dev@l...>
• Subject: RE: Handling of significant whitespace in .NET XmlReader
• From: "Dare Obasanjo" <dareo@m...>
• Date: Thu, 3 Jul 2003 10:01:05 -0700
• Cc: "Scherbel, Michael" <Michael.Scherbel@k...>
• Thread-index: AcNBP6ZAm1olgwH1SvahN79D5TtBIwARQp4l
• Thread-topic: Handling of significant whitespace in .NET XmlReader

Whitespace is made significant by the presences of an xml:space="preserve".

________________________________

From: Eckenberger Axel [mailto:Extern.Eckenberger@k...]
Sent: Thu 7/3/2003 1:45 AM
To: xml-dev@l...
Cc: Scherbel, Michael
Subject:  Handling of significant whitespace in .NET XmlReader



Is there any known problem with the handling of singnificant whitespace in
the .NET XmlReader ???

... or better ...

Is there any significant whitespace handling at all ???

The following code snipplet

<code>
        string xml = "<!DOCTYPE a [\n<!ENTITY uuml \"ü\">\n]>\n<a>    <b>
aasdf   </b>" +
                         "<c>asdfasdf dadf<d/>asd<d>asdfasd</d> &uuml;adasdf
asd  &uuml;  asdf asdf </c>\n" +
                         "</a>";
                       
        XmlTextReader reader = new XmlTextReader(new
System.IO.StringReader(xml));
        reader.WhitespaceHandling = WhitespaceHandling.All;

        while (reader.Read()) {
                System.Diagnostics.Trace.WriteLine(
                        "[" + reader.NodeType + "] " + reader.Name + " ==>
\"" + reader.Value + "\""
                );
        }
</code>

Produces the same output for WhitespaceHandling.Significant and
WhitespaceHandling.None and for WhitespaceHandling.All the only whitespace
relevant node type returned is 'Whitespace' (see output later on).


Bye

Axel

<output>
For WhitespaceHandling.None:
[DocumentType] a ==> "
<!ENTITY uuml "ü">
"
[Element] a ==> ""
[Element] b ==> ""
[Text]  ==> "  aasdf   "
[EndElement] b ==> ""
[Element] c ==> ""
[Text]  ==> "asdfasdf dadf"
[Element] d ==> ""
[Text]  ==> "asd"
[Element] d ==> ""
[Text]  ==> "asdfasd"
[EndElement] d ==> ""
[EntityReference] uuml ==> ""
[Text]  ==> "adasdf asd  "
[EntityReference] uuml ==> ""
[Text]  ==> "  asdf asdf "
[EndElement] c ==> ""
[EndElement] a ==> ""

For WhitespaceHandling.Significant:
[DocumentType] a ==> "
<!ENTITY uuml "ü">
"
[Element] a ==> ""
[Element] b ==> ""
[Text]  ==> "  aasdf   "
[EndElement] b ==> ""
[Element] c ==> ""
[Text]  ==> "asdfasdf dadf"
[Element] d ==> ""
[Text]  ==> "asd"
[Element] d ==> ""
[Text]  ==> "asdfasd"
[EndElement] d ==> ""
[EntityReference] uuml ==> ""
[Text]  ==> "adasdf asd  "
[EntityReference] uuml ==> ""
[Text]  ==> "  asdf asdf "
[EndElement] c ==> ""
[EndElement] a ==> ""

For WhitespaceHandling.All:
[DocumentType] a ==> "
<!ENTITY uuml "ü">
"
[Whitespace]  ==> "
"
[Element] a ==> ""
[Whitespace]  ==> "    "
[Element] b ==> ""
[Text]  ==> "  aasdf   "
[EndElement] b ==> ""
[Element] c ==> ""
[Text]  ==> "asdfasdf dadf"
[Element] d ==> ""
[Text]  ==> "asd"
[Element] d ==> ""
[Text]  ==> "asdfasd"
[EndElement] d ==> ""
[Whitespace]  ==> " "
[EntityReference] uuml ==> ""
[Text]  ==> "adasdf asd  "
[EntityReference] uuml ==> ""
[Text]  ==> "  asdf asdf "
[EndElement] c ==> ""
[Whitespace]  ==> "
"
[EndElement] a ==> ""
</output>

--
Axel Eckenberger
Software-Project-Manager
CSDB und Retrieval Software
Krauss-Maffei Wegmann GmbH & Co. KG
Tel.:   +49 89 8140-4408
e-mail: Extern.Eckenberger@k...     (work)
                axel@e...             (private)

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