#!/bin/bash
#
# rotate-images: rotate each image given on the command line
#
# Gerald Oskoboiny, July 4 2003
# 
# source: http://impressive.net/software/photo/source/rotate-images
#
# @@ try jhead -autorot
#
# $Id: rotate-images,v 1.4 2008-07-15 20:33:01 gerald Exp $
#

usage() {
    echo "usage:"
    echo
    echo "    rotate-images file1 [file2 ... ]"
    echo
    echo "    example: rotate-images foo1.jpg foo2.jpg foo3.jpg"
    echo
    exit
}

if [ $# -lt 1 ]; then
    usage;
fi

for f in $*; do
    orientation=$(epinfo -T Orientation "$f")
    if [ $orientation -eq 1 ]; then
    	echo "$f" does not need rotating
	continue
    fi
    if [ $orientation -eq 6 ]; then
    	degrees=90
    fi
    if [ $orientation -eq 8 ]; then
    	degrees=270
    fi
    echo Rotating "$f"...
    mv "$f"{,.egp}
    jpegtran -rotate $degrees -copy all -outfile "$f" "$f.egp" && \
    exiftool -q -overwrite_original -Orientation=1 -n $f && \
    rm -f "$f".egp
done


#
# changelog:
#
# $Log: rotate-images,v $
# Revision 1.4  2008-07-15 20:33:01  gerald
# set exif orientation to 1 after rotation; don't keep trash around any more
#
# Revision 1.3  2007/01/30 09:06:28  gerald
# switched to bash because no longer works as sh
#
# Revision 1.2  2005/12/12 00:59:03  gerald
# added a note to try jhead -autorot
#
# Revision 1.1  2003/07/18 19:02:17  gerald
# rotate each image given on the command line
#
#
#