## vim:ft=zsh
## creates an alias and precedes the command with sudo if $EUID is not zero.
## Taken from the grml zshrc - http://grml.org
local only=0
local multi=0
while [[ ${1} == -* ]] ; do
	case ${1} in
		(-o) only=1 ;;
		(-a) multi=1 ;;
		(--) shift ; break ;;
		(-h)
			printf 'usage: salias [-h|-o|-a] <alias-expression>\n'
			printf '  -h      shows this help text.\n'
			printf '  -a      replace '\'' ; '\'' sequences with '\'' ; sudo '\''.\n'
			printf '          be careful using this option.\n'
			printf '  -o      only sets an alias if a preceding sudo would be needed.\n'
			return 0
			;;
		(*) printf "unkown option: '%s'\n" "${1}" ; return 1 ;;
	esac
	shift
done

if (( ${#argv} > 1 )) ; then
	printf 'Too many arguments %s\n' "${#argv}"
	return 1
fi

key="${1%%\=*}" ;  val="${1#*\=}"
if (( EUID == 0 )) && (( only == 0 )); then
	alias -- "${key}=${val}"
elif (( EUID > 0 )) ; then
	(( multi > 0 )) && val="${val// ; / ; sudo }"
	alias -- "${key}=sudo ${val}"
fi

return 0