trf

#!/usr/bin/env bash

set -e

. functions

function usage {
	cat <<END
Remove line feed (dos -> unix) from files or standard input.

Usage:
  $0 [<options>] [<file> ...]

Options:
  --help, -h
    Display this help
END
	exit 2
}

while [[ $# -gt 0 ]]; do
case $1 in
--help | -h)
	usage
	;;
--)
	shift
	break
	;;
-*)
	error "Unknown option: $1"
	;;
*)
	break
	;;
esac
done

if [[ $# -eq 0 ]]; then
	tr -d '\r'
else
	while [[ $# -gt 0 ]]; do
		[[ -f $1 ]] || error "Not a file: $1"

		wap -- "$1" tr -d '\r'
		shift
	done
fi