[Typo3-dev] Validating TypoScript - Schema vs. DTD

[Elmar Hinz]

Hello,

a month ago we had a discussion about the future of TypoScript. We came 
to the point that it is important to validate it. Without validation we 
get less error messages about wrong compositions. That slowes down 
production. This slowdown is compensed by a very short form of notation 
in comparism to XML. But we don't feel really lucky without the 
possibility of validation. A lot of TYPO3 users would prefer XML.

Validation is an important point. But the discussion came to no real 
result if validation of TypoScript could be possible. I guess the reason 
for this is that only few of us really know how validation works.

I currently make some thoughts about converting TS to XML and to 
validate that.


page = PAGE
page.10 = HTML
page.10.value = Test
page.10.if.value = 1
page.10.if.equals = 2
page.20 = COA
page.20.10 = HTML
page.20.10.value = Test

...

<page type="PAGE">
   <10 type="HTML">
     <value>Test</value>
     <if>
       <value>2</value>
       <equals>1</equals>
     </if>
   </10>
   <20 type="COA">
     <10 type="HTML">
       <value>Test</value>
     </10>
   </20>
</page>

I don't know if numbers are valid XML Elements. But one could write 
<number10> instead of <10>. That isn't the point.

I see a problem with ambiguus elements like "value" or "number10". 
Depending on their context they are of different Types. That means that 
depending on their own parents different childs are allowed.

My knowladge about DTD tells my, that is not possible to define 
different childs for an element depending on the parent context.

Does anybody know if schema do offer something like this?

Regards

Elmar







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