Re: Two questions about HelpViewer

Hi Riccardo,

On 2025-11-11 00:23:05 +0100 Riccardo Mottola 
<[email protected]> wrote:

> Hi,
> 
> since I am working extensively on HelpViewer, it is not easy as that, 
> but 
> thank you for stimulating me looking at the issue more.
> 
> I added character encoding recognition support in HadlerStructureXLP. 
> It will 
> try to parse a like in the form:
> 
> <?xml version="1.0" encoding="utf-8"?>
> 
> and assume UTF-8 by default, in XML style. This will need to be 
> documented 
> well.
> 
> Patrick Cardona wrote:
>> It seems finally that writing the meta: <meta charset="utf-8" /> 
>> once at 
>> the very begining of each xlp file is enough to avoid the issue. 
>> Doing 
>> that, the workaround is l
> 
> I have brought the internal Parser up to spec enough that it can 
> display the 
> example files without major errors and with no crashes.
> 
> For testing purposes, you can switch different parsers.
> 
> defaults write org.gnustep.HelpViewer Parser Internal
> defaults write org.gnustep.HelpViewer Parser GSHTML
> defaults write org.gnustep.HelpViewer Parser Sloppy
> 
> built-in parser resuscitated vs. libxml2 based GSHTML parser and 
> GSXML in 
> Sloppy mode.
> 
> Since we are not pure XML nor HTML the results are interesting, 
> however the 
> Internal parser seems now quite usable with some care in writing the 
> xlp.
> 
> 
> The issue is that the whole chain may not be UTF-8 clean and that the 
> XML 
> parser is called twice, first from HandlerStructureXLP then from 
> TextFormatterXLP.
> GSHTML assumes Latin 1 if not specified.
> 
> I changed the pipeline to go through UTF-8 if not specified and if 
> specified, 
> to convert to UTF-8. However GSHTML might choke because it either 
> respect the 
> existing character encoding.
> I probably need to remove or even rewrite the encoding line.
> 
> However, in the long run I want to retain the internal Parser which 
> gives us 
> freedom and also allow the use of the mixed XML-HTML style the format 
> is 
> based on.
> 
> You can play around with SVN.
> 
> Riccardo
> 

Thanks a lot for this work. I will try the different parsers options 
and give you feedback asap.

Cheers,
Patrick

-- 
Patrick Cardona - Pi400 - GNU/Linux aarch64 (Debian 13.1)
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