#!/bin/sh


# std: logging and dealing with the shell's stdio decriptors

var_log_key()
{
	test -n "$log_key" || {
		test -n "$log" && {
			log_key="$log"
		} || {
			test -n "$scriptname" && {
				log_key=$scriptname.sh
			} || printf ""
		}
	}
}

# stdio helper functions
log()
{
	var_log_key
	printf -- "[$log_key] $1\n"
	unset log_key
}

err()
{
	log "$1" 1>&2
	test -z "$3" || exit 199
	test -z "$2" || exit $2
}

stderr()
{
	case "$(echo $1 | tr 'A-Z' 'a-z')" in
		warn*|err*|notice ) err "$1: $2" "$3" ;;
		* ) err "$2" "$3" ;;
	esac
}

# std-v <level>
# if verbosity is defined, return non-zero if <level> is below verbosity treshold
std_v()
{
	test -z "$verbosity" && return || {
		test $verbosity -ge $1 && return || return 1
	}
}

std_exit()
{
	test -z "$2" || {
		echo "std-exit: Surplus arguments '$2'"
		exit 200
	}
	test "$1" != "0" -a -z "$1" && return 1 || exit $1
}

#emerg() 1
crit()
{
	std_v 2 || std_exit $2 || return 0
	stderr "Crit" "$1" $2
}
error()
{
	std_v 3 || std_exit $2 || return 0
	stderr "Error" "$1" $2
}
warn()
{
	std_v 4 || std_exit $2 || return 0
	stderr "Warning" "$1" $2
}
note()
{
	std_v 5 || std_exit $2 || return 0
	stderr "Notice" "$1" $2
}
info()
{
	std_v 6 || std_exit $2 || return 0
	stderr "Info" "$1" $2
}
debug()
{
	std_v 7 || std_exit $2 || return 0
	stderr "Debug" "$1" $2
}
# Id: node-sitefile/0.0.6-dev tools/std.lib.sh