Re: Does the new structure include the same text content?

Yes, it is often hard to go full round-trip.

What sometimes works better is this: If HTML rendering stylesheets exist 
for both formats, to tweak both stylesheets so that, with a little or 
large bit of normalization, identical textual outputs emerge.

I don't know enough about S1000D to know whether this approach is 
feasible though.

Gerrit

On 22.01.2021 16:58, [email protected] wrote:
> Hi Gerrit,
> Good to know that I may be on the right track with the normalized text diff.
> It would be almost impossible to go back to the original SGML structure from the XML. The main difficulty is that a lot of the structure in the SGML uses inclusions to allow tables and figures in almost any location. That SGML feature was always a recipe for untidy documents!
> 
> Ian
> 
> -----Original Message-----
> From: Imsieke, Gerrit, le-tex [email protected] <[email protected]>
> Sent: 22 January 2021 11:45
> To: [email protected]
> Subject: Re: [xsl] Does the new structure include the same text content?
> 
> Hi Ian,
> 
> diffing normalized text output is a good approach in my experience.
> However, if the 4.1 structures differ significantly from 1.7 as you say, it might be a good idea to transform the 4.1 output back to 1.7 prior to the diff. Or maybe not "transform it back to match the input exactly", but only to such a degree that the text files will be the same if no content was lost or duplicated.
> 
> Gerrit
> 
> On 22.01.2021 12:28, [email protected] wrote:
>> Hi everyone,
>>
>> I am working on a project to convert several thousand SGML files
>> (S1000D
>> 1.7) into a more recent XML version (S1000D 4.1). My finished XSLT
>> style sheet does the job that is expected.  However during the
>> development I did run into a problem where an error in the stylesheet
>> allowed the output to pass schema validation but by omitting some
>> content! For me that’s very bad news and I was lucky to notice it.
>> Ultimately the final output will be verified by the subject matter
>> experts, but I really don’t want to give them any reason to doubt the
>> reliability of the conversion.
>>
>> This got me thinking about ways to verify the output text content
>> against the input despite significantly different structure. Is there
>> an established way to do that? If so what is it called and how well
>> does it work?
>>
>> Perhaps it’s something that I should build into the XSLT as it is
>> written? Or perhaps it could be run as a post process batch comparison
>> operation?
>>
>> My initial thought is to output normalized text from input and output
>> and compare the resulting text files…
>>
>> I’ve searched the archives, but I probably don’t know the correct
>> terminology to get any useful results…
>>
>> Thanks in advance for all responses.
>>
>> Ian
>>
>> Ian Proudfoot
>>
>> Bembridge
>>
>> Isle of Wight
>>
>> United Kingdom
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