#!/bin/bash
#  args - Bash argument handling library

set -e


check_args() {
	local tst=$1
	local expect=$2
	shift 2
	local nargs="${#@}"
	assert_usage "wrong number of arguments ($nargs $tst $expect)" \
		[ ! $nargs $tst $expect ]
}
has_args() { check_args -ne "$@"; }
min_args() { check_args -lt "$@"; }
max_args() { check_args -gt "$@"; }


# arg_quote - quotes a single argument
arg_quote() {
	has_args 1 "$@"
	# handle existing quotes
	local value=${1//\'/\'\\\'\'}
	printf "'%s'" "$value"
}