[gs-devel] Convert PDF to PS - Automatic page rotation to Portrait

[Lakos Dániel]

Hi,

Im using Hylafax, which can only send portrait documents,  but  theres a
need  to fax  landscape PDFs as well.
So I need a solution to detect page orientation and rotate the document
to portrait, if its landscape.
Portrait pages should be left alone...

Ive found a solution in the GS archives, and the rotation works as it
should, but some text are malformed/characters missing after conversion.
Does Anybody have an idea whats wrong?
Is there any other method to "auto rotate" pages?
My GhostScript Version is 8.15.

Thank You in Advance,
Daniel

The solution I use, is the following.
-----------------------------------------------------------------------------
gs -sOutputFile=out.ps \
            -sDEVICE=pswrite \
            -dBATCH -dNOPAUSE -dSAFER=true \
            autorotate.ps \
            in.pdf
-----------------------------------------------------------------------------
autorotate.ps:::::
%!PS
  %   Sequence to set up for a single page size, auto fit all pages.
  << /Policies << /PageSize 3 >>
     /InputAttributes currentpagedevice /InputAttributes get    %current
dict
     dup { pop 1 index exch undef } forall    % remove all page sizes
     dup 0 << /PageSize [ 595 842 ] >> put    % for A4 use [ 595 842 ]
  >> setpagedevice
-----------------------------------------------------------------------------