srt3d

#!/bin/bash

format="--3dsbs"
args=(--font Arial --color 0xFFFF00 --margin-vertical 50)

myname="${0##*/}"

argerr()  { printf "%s: %s\n" "$myname" "${1:-error}" >&2 ; usage 1 ; }
invalid() { argerr "invalid option: $1" ; }

usage() {
	cat <<-USAGE
	Usage: $myname [--sbs|--tab] INPUT...
	USAGE
	if [[ "$1" ]] ; then
		cat >&2 <<- USAGE
		Try '$myname --help' for more information.
		USAGE
		exit 1
	fi
	cat <<-USAGE

	A sub3dtool wrapper to convert an SRT file to 3D (using ASS format)
	using custom font and color options

	Options:
	  -h|--help       - show this page

	  -s|--sbs|--side - Side-by-Side (default)
	  -t|--tab|--top  - Top-and-Bottom

	Current custom options:
	  ${args[@]}

	Copyright (C) 2013 Rodrigo Silva (MestreLion) <linux@rodrigosilva.com>
	License: GPLv3 or later. See <http://www.gnu.org/licenses/gpl.html>
	USAGE
	exit 0
}

# Option handling
files=()
for arg in "$@"; do [[ "$arg" == "-h" || "$arg" == "--help" ]] && usage ; done
while (( $# )); do
	case "$1" in
	-s|--sbs|--side) format="--3dsbs" ;;
	-t|--tab|--top)  format="--3dtb"  ;;
	--) shift ; break ;;
	-*) invalid "$1" ;;
	*) files+=( "$1" ) ;;
	esac
	shift
done
files+=( "$@" )

for sub in "${files[@]}"; do
	out="${sub%.*}".ssa
	sub3dtool "$format" "${args[@]}" -o "$out" "$sub"
done