[NTG-pdftex] pdfximage

Hans Hagen pragma at wxs.nl
Mon Aug 28 23:09:07 CEST 2006


Hartmut Henkel wrote:
> On Mon, 28 Aug 2006, Hans Hagen wrote:
>   
>> Hartmut Henkel wrote:
>>     
>>> On Mon, 28 Aug 2006, Hans Hagen wrote:
>>>
>>>       
>>>> It's kind of annoying that pdftex has hard coded suffixes.
>>>>
>>>> how about something
>>>>
>>>> \pdfjpgsuffixes{jpg,jpeg,myjpg}
>>>> \pdfpngsuffixes{png,somepng}
>>>> \pdfpdfsuffixes{pdf,epdf,fdf}
>>>>         
>>> but you know that the suffixes are used only as a last resort, as
>>> first the file headers are checked for the file type (thanks to
>>> Heiko!). So e. g. foo.somejpg is a legal name and would still be
>>> recognized as .png if it's a png file :-)
>>>       
>> when i test with a unknown format, i get an abort and:
>>
>> Error: pdftex.exe (file ./hakker1b.tif): unknown type of image
>>
>> so, in order to know if a funny suffix is a valid one for pdftex, we
>> need something
>>
>> \pdfcheckimage{somefile.somesiffix}
>>
>> which sets a flag, say \pdfimagecheck 0/1
>>     
>
> like
>
> \pdfretval=-1 not recognized
> \pdfretval=0 PDF
> \pdfretval=1 PNG
> \pdfretval=2 JPG
> \pdfretval=3 JBIG2
>
> or better 0,1,2,3,4?
>   

right, that would be nice! (0,1,2,...)

we should aborted runs as much as possible

Hans

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