#! /bin/sh
#
# $NetBSD: exifautotran,v 1.2 2010/01/04 19:43:39 joerg Exp $
#
# Based on http://www.jpegclub.org/exifautotran.txt
#
if [ "$#" = "0" ]
then
cat << EOF 1>&2
usage: exifautotran [list of files]
Transforms Exif files so that Orientation becomes 1
EOF
exit 1
fi

for i
do
 case `jpegexiforient -n "$i"` in
 1) transform="";;
 2) transform="-flip horizontal";;
 3) transform="-rotate 180";;
 4) transform="-flip vertical";;
 5) transform="-transpose";;
 6) transform="-rotate 90";;
 7) transform="-transverse";;
 8) transform="-rotate 270";;
 *) transform="";;
 esac
 if test -n "$transform"; then
  echo Executing: jpegtran -copy all $transform $i
  jpegtran -copy all $transform "$i" > tempfile
  if test $? -ne 0; then
   echo Error while transforming $i - skipped.
  else
   rm "$i"
   mv tempfile "$i"
   jpegexiforient -1 "$i" > /dev/null
  fi
 fi
done