[bug #66155] test suite should confirm functionality of pdftotext and pdfimages

[Sven Schober]

Follow-up Comment #2, bug #66155 (group groff):

Concerning pdfimages and the mom test:

the poppler version emits:


pdfimages -list contrib/mom/examples/typesetting.pdf
page   num  type   width height color comp bpc  enc interp  object ID x-ppi
y-ppi size ratio
--------------------------------------------------------------------------------------------
   3     0 image      81    96  rgb     3   8  image  no        13  0    72   
72 7826B  34%
   3     1 smask      81    96  gray    1   8  image  no        13  0    72   
72  125B 1.6%


the xpdf version emits a much more terse output on the same file:


 pdfimages -list contrib/mom/examples/typesetting.pdf 1
1-0000.ppm: page=3 width=81 height=96 hdpi=72.00 vdpi=72.00
colorspace=DeviceRGB bpc=8
1-0001.pgm: page=3 width=81 height=96 hdpi=72.00 vdpi=72.00
colorspace=DeviceGray bpc=8


in the patch, I attached, I try to cater for this difference.

Concerning pdftottext and the ur-works test

the situation for pdftotext is a bit more involved as the version from
xpdfreader.com does not support reading from stdin. so, I redirect the output
into a temporary file and read from there.

(file #56407)

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File name: 0001-there-are-at-least-two-different-implementation-vari.patch
Size: 3KiB
   
<https://file.savannah.gnu.org/file/0001-there-are-at-least-two-different-implementation-vari.patch?file_id=56407>


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