Re: How to determine supported entities

David O'Brien <[email protected]> Thu, 4 Apr 2019 12:23:37 +1000

Newsgroups	gmane.text.docbook.misc
Message-ID	<[email protected]>

Thanks Bob.

I'll run this by the working group and see what comes back.

David

On 4/4/19 7:31 AM, Bob Stayton wrote:
> Have you considered making the address of common.ent in its parameter
> entity reference a URL referencing a website?  That would make it
> read-only, maintainable in one location, and instantly updated to all users.
> 
> <!ENTITY % common_entities SYSTEM
> "http://redhat.com/somepathto/common.ent" >
> 
> That wouldn't prevent someone from adding entity declarations to their
> XML file to override particular entities, though.
> 
> Bob Stayton
> Sagehill Enterprises
> [email protected]
> 
> On 4/2/2019 4:34 PM, David O'Brien wrote:
>> Is there a way to differentiate between (what I call) "natively
>> supported entities" (&nbsp; &lt; &gt; &trade; and all those) and what we
>> add in .ent files?
>>
>> In our projects we normally have one /Common/common.ent file where we
>> define numerous entities. This is shared across all projects. What we
>> want to do is make sure people don't add to this file, resulting in
>> different versions for different projects. This file, combined with the
>> natively supported entities, would constitute a "whitelist" of entities.
>>
>> We've done something similar with DocBook elements, where we have a
>> whitelist of supported elements (we don't use the entire 4.5 schema) and
>> if our script hits a "black" element it throws a warning. To do the same
>> with entities means we'd have a *very* long whitelist just for the
>> natively supported entities.
>>
>> Perhaps there is a better way?


-- 

David

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