Re: Help in using gsapi_set_stdio() to capture stdout into a memory buffer

Ken & Chris,

Thanks for your attention on this. Probably I'll have to try another  
approach.

Joaquim

> At 21:10 24/03/2016 +0000, Joaquim Luis wrote:
>
>
>> I hadn't send a full working example because to reproduce it would be
>> necessary to install the GMT (http://gmt.soest.hawaii.edu) trunk  
>> version,
>> plus a MEX wrapper to call it from Matlab or alternatively install Julia
>> plus a package to call GMT from it. A complicated procedure.
>
> That does indeed sound too complex.
>
>
>> So I tried to create a simple stand-alone case to provide but, surprise.
>> It works too. So, the only case it doesn't work is when the code is  
>> called
>> from within Matlab. Since it relies on creating a pipe to stdin and  
>> stdout
>> I am guessing that Matlab is getting in the way and that is what is
>> causing the ioerror.
>
> Possibly, without a transcript from PostScript stdout its not really  
> possible to tell. However an inability to write to stdout would cause an  
> ioerror.
>
> You could of course use a setup where you don't require to use stdin or  
> stdout and see what happens. If it works then you know its something to  
> do with the environment.
>
>
>> I still can send you the code if you want, but it won't serve for  
>> nothing
>> as it works well.
>
> No point then. If it requires an unusual setup to reproduce the problem  
> then I don't think we can help you, in general we require our free users  
> to reproduce problems on the standard Ghostscript executable. Obviously  
> we vary that to a point when dealing with developers but there is a  
> limit to how much effort we can expend.
>
>
>> Regarding the License issue, yes we are aware that Ghostscript is AGPL
>> (actually we thought it was still GPL but it makes no big difference).
>
> As long as you're aware that's OK, its something we like to point out  
> early before people invest lots of time in case it turns out they can't  
> conform to the licence terms.
>
>
>
>                      Ken