list of posible values for a tag content

[Sergei]

Hello everybody,
I need to validate an XML document with a DTD file.
The problem is that <lang> tag is empty some times, (but it should
contain ENG,RUS,SPA...)
which causes en error later in the program. How can I catch this with
DTD validation ?
Is there a way to specify a list of posible values for a tag content ?
Or it only can be done for attributes ?
Any suggestions are greatly appreciated.
--Sergei

 

[Peter Flynn]

Hello everybody,
I need to validate an XML document with a DTD file.

See http://xml.silmaril.ie/authors/parsers/

The problem is that <lang> tag

Element. See http://xml.silmaril.ie/authors/makeup/

is empty some times, (but it should
contain ENG,RUS,SPA...)
which causes en error later in the program. How can I catch this with
DTD validation ?

Is this your own DTD that you have written
or someone else's that you have been given?

Is there a way to specify a list of posible values for a tag content ?

No. Not with a DTD. If you need to check element content you can write
an XSLT program that will do this. Or use a Schema.

Or it only can be done for attributes ?

Correct.

///Peter

 

[Sergei]

Thanks a lot!
That really helps!
-- Sergei