SVG as XML

[VladimirVV]

Hello,
Please, help to understand the problem:
Let's create in Notepad simplest SVG 1.1 document:

<?xml version="1.0" standalone="no"?>
<!DOCTYPE svg PUBLIC "-//W3C//DTD SVG 1.1//EN"
"http://www.w3.org/Graphics/SVG/1.1/DTD/svg11.dtd"> <svg version = "1.1" width="300" height="250"> <title>Example SVG code</title> <path d="M 10,10 l0,100 100,0 0,-100z"/> </svg>

Let's save it as *.svg and open in IE (I use 6.0) => IE will open this document correctly => Adobe Viewer understood everything. Let's save this document as *.xml file and open in IE => error message:
The XML page cannot be displayed
Cannot view XML input using style sheet. Please correct the error and then click the Refresh button, or try again later. Parameter entity must be defined before it is used. Error processing resource 'http://www.w3.org/Graphics/SVG/1.1/DTD/svg11.dtd'. Line 55, Position 2

%svg-prefw-redecl.mod;]]>
-^

it seems, that problem with DTD...?
if remove DOCTYPE line => xml will be displayed, but this doesn't allow to validate document.

but the line
<!DOCTYPE svg PUBLIC "-//W3C//DTD SVG 1.1//EN"
"http://www.w3.org/Graphics/SVG/1.1/DTD/svg11.dtd">

is from http://www.w3.org/QA/2002/04/valid-dtd-list.html (have a look at SVG 1.1 FULL). Could anyone help me to understand how to create valid SVG 1.1 xml-document?

Best regards, Vladimir.

 

[Philippe Poulard]

Hello,
Please, help to understand the problem:
Let's create in Notepad simplest SVG 1.1 document:

<?xml version="1.0" standalone="no"?>
<!DOCTYPE svg PUBLIC "-//W3C//DTD SVG 1.1//EN"
"http://www.w3.org/Graphics/SVG/1.1/DTD/svg11.dtd"> <svg version = "1.1" width="300" height="250"> <title>Example SVG code</title> <path d="M 10,10 l0,100 100,0 0,-100z"/> </svg>

Let's save it as *.svg and open in IE (I use 6.0) => IE will open this document correctly => Adobe Viewer understood everything. Let's save this document as *.xml file and open in IE => error message:
The XML page cannot be displayed
Cannot view XML input using style sheet. Please correct the error and then click the Refresh button, or try again later. Parameter entity must be defined before it is used. Error processing resource 'http://www.w3.org/Graphics/SVG/1.1/DTD/svg11.dtd'. Line 55, Position 2

%svg-prefw-redecl.mod;]]>
-^

it seems, that problem with DTD...?
if remove DOCTYPE line => xml will be displayed, but this doesn't allow to validate document.

but the line
<!DOCTYPE svg PUBLIC "-//W3C//DTD SVG 1.1//EN"
"http://www.w3.org/Graphics/SVG/1.1/DTD/svg11.dtd">

is from http://www.w3.org/QA/2002/04/valid-dtd-list.html (have a look at SVG 1.1 FULL). Could anyone help me to understand how to create valid SVG 1.1 xml-document?

Best regards, Vladimir.

DTD is usually used for validation purpose; so, assuming that your SVG document has been previously validated, removing it is not really a bad idea if the spec allow SVG engines to process documents without the DTD sentence (i hope so); however, the DTD carries some important information, like the namespace URI; SVG engines should react only on elements that are in this namespace

try this :

<?xml version="1.0"?>
<svg version = "1.1" width="300" height="250"
xmlns="http://www.w3.org/2000/svg">
<title>Example SVG code</title>
<path d="M 10,10 l0,100 100,0 0,-100z"/>
</svg>

please check the namespace URI before, and for other predefined attributes

about ie, i still don't know how it processes such a document... try it and let me know

the problem is that unlike with other file types, an xml file may be handled with various applications; usually, extensions are mapped to a mime type mapped itself to an application, that's why the .svg file is processed within ie with the svg viewer; with xml files, the browser doesn't know what tool to use before reading the root element : the universal name of the root element is unambiguous and could be used to select the right tool... should a good browser select the right tool after reading the root element ?

 

[Toni Uusitalo]

is from http://www.w3.org/QA/2002/04/valid-dtd-list.html (have a look at SVG 1.1 FULL). Could anyone help me to understand how to create valid SVG 1.1 xml-document?

There seems to be some problems with m$ parser when trying to validate with SVG dtds - I didn't get it to work either. If you can get it to resolve missing parameter entity like the one showing in your error message you're going to bump into other troubles with xmlns attributes in dtd etc. so lets forget MSXML ;-)

Try for example RXP parser:
http://www.cogsci.ed.ac.uk/~richard/rxp.html

invoking it with
rxp -N -V -x <filename.svg.xml>
(see ftp://ftp.cogsci.ed.ac.uk/pub/richard/rxp.txt for list of switches)

with your document BUT adding attribute called "dummy" into "path" element outputs:
Warning: Undeclared attribute dummy
for element path in unnamed entity at line 6 char 45 of file:///<filename.svg.xml>

so this one seems to work.

p.s. you might also want to download "flattened" svg11-flat.dtd for local validation (you must change your !DOCTYPEs for that) from http://www.w3.org/TR/SVG/intro.html (search for word "flattened" in this page)

with respect,
Toni Uusitalo

 

[Toni Uusitalo]

-------------------------------------------------------------------------- ------ Parameter entity must be defined before it is used. Error processing resource 'http://www.w3.org/Graphics/SVG/1.1/DTD/svg11.dtd'. Line 55, Position 2

%svg-prefw-redecl.mod;]]>
-^

-----

BTW this seems to be a serious flaw in MSXML parser,
in svg11.dtd:
<snip>
<!ENTITY % svg-prefw-redecl.module "IGNORE" >
<![%svg-prefw-redecl.module;[
%svg-prefw-redecl.mod;]]>
</snip>

Parser shouldn't try to expand %svg-prefw-redecl.mod; since this is inside IGNORE section. I believe IGNORE section can even contain non well-formed stuff.

with respect,
Toni Uusitalo

 

[Johannes Koch]

There seems to be some problems with m$ parser when trying to validate with SVG dtds

Not only SVG. This parser cannot handle modular DTDs in general. AFAIK the same happens with e.g. XHTML 1.1.

 

[Toni Uusitalo]

Not only SVG. This parser cannot handle modular DTDs in general. AFAIK the same happens with e.g. XHTML 1.1.
--

yes, likely there gonna be problems handling modular DTDs if conditional section processing is faulty (see my second post in this thread). Also it seems that if xmlns is defaulted from DTD, parsing fails.

I remember that IE uses older version (3?) of MSXML by default (there's some thing in the xml view in IE that prevents using MSXML4 if I remember correctly). I don't know if they've fixed these bugs in the later releases of their parser.

with respect,
Toni Uusitalo

 

[Steve Slatcher]

Not only SVG. This parser cannot handle modular DTDs in general. AFAIK the same happens with e.g. XHTML 1.1.

And Docbook 4.3