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 <[email protected] > <mailto:[email protected]>> 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? > > _______________________________________________ > > oXygen-user mailing list > > [email protected] <mailto:[email protected]> > > http://www.oxygenxml.com/mailman/listinfo/oxygen-user > > > _______________________________________________ > oXygen-user mailing list > [email protected] <mailto:[email protected]> > http://www.oxygenxml.com/mailman/listinfo/oxygen-user > > _______________________________________________ oXygen-user mailing list [email protected] http://www.oxygenxml.com/mailman/listinfo/oxygen-user
