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   Re: [xml-dev] OpenOffice.org DOCTYPE declaration

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----- Original Message ----- 
From: "Ed Davies" <edavies@nildram.co.uk>
To: <xml-dev@lists.xml.org>
Sent: Friday, April 30, 2004 11:58 AM

> As most people on this list will know, OpenOffice.org documents
> are stored as XML within a ZIP format file.  The main file 
> within the ZIP is called content.xml and starts with:
>   <?xml version="1.0" encoding="UTF-8"?>
>   <!DOCTYPE office:document-content 
>       PUBLIC "-//OpenOffice.org//DTD OfficeDocument 1.0//EN"
>       "office.dtd">
> (line breaks added for mailability).
> The "office.dtd" system identifier here is a relative URI but, 
> because the DTD is not in the document ZIP and is probably not 
> even in the same directory as the document it is awfully 
> confusing to any XML processor.


> My questions:
> 1. Is having a system id which doesn't actually refer to a DTD 
>    a sign of faulty XML (i.e., not valid or not well formed)?  

> 2. Is this true even if the public identifier is OK?
> 3. What is the best way to deal with this case in a program
>    using a SAX reader?

Depends on how much your app knows beforehand.
Does it have a registry of well-known DTDs where it can use
the public identifier to resolve the external id?

Also, the XML spec allows for application context 
to determine a base URI to resolve a relatve URI against.

> 4. What is the best way to deal with it when using a standalone 
>    XML tool like an XSLT program?
> 5. Would it help if OOo included standalone="no" in the XML 
>    declaration?  (If the processor isn't validating and knows 
>    the document is standalone then presumably it doesn't have 
>    any reason to read the DTD?)

Depends on the processor.



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