[vtk-developers] Add pugixml to VTK

Wed Jun 20 12:13:16 EDT 2018

SMTK and CMB use pugixml for years and have been very happy with it.

Bob

Sent from my iPad

> On Jun 20, 2018, at 12:07 PM, Jonathan Borduas <jonathan.borduas at caboma.com> wrote:
> 
> My 2 cents here is that speed is of the essence. Validating XML are good for debugging, however I found that most don’t take the time to create an XSD file to enable the validation.
>  
> In most of our cases at Caboma, XML and meant to be human readable and editable, but it is rare that we manually edit the structure of an XML file. 
> 
> However, we do wait after .xml parsing when the files are 20mb+. We hope that the community would move to the latest version of pugixml (1.9): by looking at the changelogs, there was a lot of performance improvements since version 1.4 (the current version used in ParaView).
> https://pugixml.org/docs/manual.html#v1.5
>  
> Best
>  
> Jonathan Borduas
> CTO, Caboma Inc.
>  
>  
> From: vtk-developers <vtk-developers-bounces at public.kitware.com> On Behalf Of David E DeMarle
> Sent: Wednesday, June 20, 2018 11:49 AM
> To: Elvis Stansvik <elvis.stansvik at orexplore.com>
> Cc: vtkdev <vtk-developers at vtk.org>
> Subject: Re: [vtk-developers] Add pugixml to VTK
>  
>  I was thinking more if there should be a push towards one single lib, ...
>  
> I for one would really like us to get down to just one xml parser in VTK. The more the less merrier in terms of maintenance effort and project complexity eh?
>  
> David E DeMarle
> Kitware, Inc.
> Principal Engineer
> 21 Corporate Drive
> Clifton Park, NY 12065-8662
> Phone: 518-881-4909
>  
>  
> On Tue, Jun 19, 2018 at 3:36 PM Elvis Stansvik <elvis.stansvik at orexplore.com> wrote:
> 2018-06-16 8:37 GMT+02:00 Chiranjib Sur <sur.chiranjib at gmail.com>:
> My few cents... The disadvantage with pugixml is that it's a non-validating parser. If I want to make full use of XML schema for any custom developed plugin, it's a very poor choice then.
>  
> Any thoughts?
>  
> Also worth noting that it's a DOM-like parser only AFAIK, so if you want to do streaming parsing in a push paradigm à la SAX or a pull paradigm à la libxml2's reader interface, you'd need to turn to another library. Note that may not be a problem if VTK already has libxml2 as a dep, since then you could use that. I was thinking more if there should be a push towards one single lib, then it might make sense to pick one that has both DOM and streaming interfaces (don't know if that's a goal/consideration though).
>  
> Elvis
>  
>  
> Thanks and regards,
> Chiranjib
> 
> ------
> Using hand held device. Sorry for the typo, if any.
>  
> On Fri, Jun 15, 2018, 11:59 PM Utkarsh Ayachit <utkarsh.ayachit at kitware.com> wrote:
> > I thought Ben Boeckel was working on a removing as many things from ThirdParty as possible (and making them parts of a superbuild). So perhaps the CityGML reader should live in a VTK module that requires an external pugi? I know pugi is small, but...
> 
> I am not sure that's correct. He was doing that for Python 3rd party
> modules. Are you referring to that?
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