[oXygen-user] Trouble validating SVG document

[Radu Coravu]

Hi Tim,

W3C describes the content of a <svg> document in a schema-independent way.
 From what I know there are also XML Schemas which can be used to 
validate SVG files.
Indeed the usual way to validate a SVG file is by using the DTDs but DTD 
as a grammar specification is not namespace aware and understands 
constructs like "xmlns:x" as usual attributes.

Regards,
Radu

Radu Coravu
<oXygen/>  XML Editor, Schema Editor and XSLT Editor/Debugger
http://www.oxygenxml.com

On 10/14/2010 6:00 PM, Reaves, Timothy wrote:
> I'm confused then.  From http://www.w3.org/TR/SVG/struct.html#SVGElement
> they reference to follow what is outlined
> http://www.w3.org/TR/2006/REC-xml-names-20060816/#ns-decl .
>
> "
>
> An example namespace declaration, which associates the namespace prefix
> *edi* with the namespace name |http://ecommerce.example.org/schema|:
>
> <x xmlns:edi='http://ecommerce.example.org/schema'>
>    <!-- the"edi"  prefix is bound tohttp://ecommerce.example.org/schema
>         for the"x"  element and contents -->
> </x>
>
> "
>
> So the W3C is recommending something that is invalid?
>
>
>
> On Thu, Oct 14, 2010 at 10:56 AM, Radu Coravu <
> <mailto:>> wrote:
>
>     Hi Tim,
>
>     I will assume that the entities like "&ns_ai;" used in the attribute
>     values are defined in the DTD declaration used to validate the SVG file.
>
>     The problem is that SVG files are validated against DTD grammars. DTD is
>     not namespace aware, it sees namespace binding attributes like "xmlns:x"
>     like simple attribute names which need to be declared in the DTD in
>     order to be recognized.
>
>     For example in the DTD used by default by Oxygen to validate DTDs the
>     <svg> root element is defined as having the following attributes:
>
>     <!ATTLIST svg
>        xmlns CDATA #FIXED "http://www.w3.org/2000/svg"
>        xmlns:xlink CDATA #FIXED "http://www.w3.org/1999/xlink"
>        %stdAttrs;
>        %testAttrs;
>        %langSpaceAttrs;
>        externalResourcesRequired %Boolean; #IMPLIED
>        class %ClassList; #IMPLIED
>        style %StyleSheet; #IMPLIED
>        %PresentationAttributes-All;
>        viewBox %ViewBoxSpec; #IMPLIED
>        preserveAspectRatio %PreserveAspectRatioSpec; 'xMidYMid meet'
>        zoomAndPan (disable | magnify) 'magnify'
>        %graphicsElementEvents;
>        %documentEvents;
>        version %Number; #FIXED "1.0"
>        x %Coordinate; #IMPLIED
>        y %Coordinate; #IMPLIED
>        width %Length; #IMPLIED
>        height %Length; #IMPLIED
>        contentScriptType %ContentType; "text/ecmascript"
>        contentStyleType %ContentType; "text/css" >
>
>     So if you do not add an attribute definition for "xmlns:x" in the
>     attributes list, the DTD will think the attribute is undefined.
>
>     Regards,
>     Radu
>
>     Radu Coravu
>     <oXygen/>  XML Editor, Schema Editor and XSLT Editor/Debugger
>     http://www.oxygenxml.com
>
>     On 10/14/2010 4:50 PM, Reaves, Timothy wrote:
>      > I have an SVG document where the openeing SVG element is:
>      > <svg  version="1.0" xmlns:x="&ns_extend;" xmlns:i="&ns_ai;"
>      > xmlns:graph="&ns_graphs;" xmlns="&ns_svg;" xmlns:xlink="&ns_xlink;"
>      >       width="497.611" height="591.554" viewBox="0 0 497.611 591.554"
>      >       style="overflow:visible;enable-background:new 0 0 497.611
>     591.554;"
>      > xml:space="preserve">
>      >
>      >
>      > Validation fails on each of the xmlns attributes.  This should be
>     valid.
>      > The errors look like:
>      > SystemID: /home/bv6679/Development/images/HSVG/99571_97YA_17.svg
>      > Engine name: Xerces
>      > Severity: error
>      > Description: Attribute "xmlns:x" must be declared for element
>     type "svg".
>      > Start location: 29:21
>      > End location: 29:42
>      >
>      > Any ideas?
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