imagedir2pdf

#!/bin/bash
#
# imagedir2pdf : Convert a directory of images to a single PDF
#
#
# Version 0.1 (2011/03/03)
# (c) 2011 Mathieu Comandon <strider@strycore.com>
# Licensed under the terms of the GPL Version 3
#


set -e

usage()
{
    cat << EOF
Usage: $0 [OPTION]... destination
Convert a directory of images to a single PDF file

OPTIONS:
 -i, --input    Directory to convert (Default: current directory)
 -m, --method   Method used to convert to PDF (convert or sam2p, default to convert)
EOF
}


# Parse arguments
if [ "$#" -eq 0 ] ; then
    usage
    exit 2
fi

PARAMS=$(getopt -n $0 -o i:m:h --long input:,method:help -- "$@")
eval set -- "$PARAMS"
while true ; do
    case "$1" in
        -i|--input) input_dir=$2 ; shift 2 ;;
        -m|--method) method=$2 ; shift 2 ;;
        --) dest_dir=$2 ; shift ; break ;;
        -h|--help) usage ; exit 2 ;;
        *) usage ; exit 2 ;;
    esac
done

if [ ! -d "$dest_dir" ] ; then
    echo "$dest_dir is not valid destination!"
    exit 2
fi

if [ -z "$dest_dir" ] ; then
    echo "You must specify an output dir!"
    exit 2
fi

if [ "$method" != "sam2p" ] ; then
    method="convert"
fi

if [ -z $(which $method) ] ; then
    echo "You must install $method to continue "
    exit 2
fi

if [ -z $(which pdftk) ] ; then
    echo "You must install pdftk to continue "
    exit 2
fi

if [ -z "$input_dir" ] ; then
    input_dir=$PWD
fi
pdfname=$(basename $input_dir)
oldpwd=$PWD
cd $input_dir
IFS=$(echo -en "\n\b")
shopt -s extglob
temp_dir=$(mktemp -d)
index=1

for image in $(ls *(*.jpg|*.png)) ; do
    $method $image $temp_dir/page$(printf "%03d" $index).pdf
    let index=$index+1
done

pdftk ${temp_dir}/*.pdf cat output ${dest_dir}/${pdfname}.pdf

rm -r $temp_dir
cd $oldpwd