vm-command-help.in

#!/bin/sh -efu

[ -z "@MKLOCAL@" ] ||
	export PATH="@PREFIX@/libshell:${PATH#@PREFIX@/libshell:}"

case "${VM_HELP-}" in
	USAGE)
		printf 'help <command>\n'
		;;
	SUMMARY)
		printf 'Displays help information about <command>\n'
		;;
	DESCRIPTION)
		;;
	OPTIONS)
		;;
esac

[ -z "${VM_HELP-}" ] ||
	exit 0

[ "$#" -gt 0 ] ||
	show_help

[ "$#" -lt 2 ] ||
	show_usage "Too many arguments"

command="$1"
shift

[ -x "@PREFIX@/vm-command-$command" ] ||
	fatal "Unknown command: $command"

prefix='Usage'
VM_HELP=USAGE "@PREFIX@/vm-command-$command" |
while read -r m; do
	printf '%s: %s %s\n' "$prefix" "$PROG" "$m"
	prefix='   or'
done
printf '\n'

desc="$(VM_HELP=DESCRIPTION "@PREFIX@/vm-command-$command")"
[ -n "$desc" ] ||
	desc="$(VM_HELP=SUMMARY "@PREFIX@/vm-command-$command")."
printf '%s\n' "$desc"
printf '\n'

opts="$(VM_HELP=OPTIONS "@PREFIX@/vm-command-$command")"
if [ -n "$opts" ]; then
	printf 'Options:\n'
	printf '%s\n\n' "$opts"
fi

printf '%s\n\n' "Report bugs to author."