stdlib.sh

assert.sh

assert::var() {
	if [ -z "${1:-}" ]; then
		log::error "Argument required"
		return 1
	fi

	set +u
	if [ -z "${!1}" ]; then
		log::error "${1} required, nothing given"
		return 1
	fi
	set -u
}

assert::path() {
	if [ -z "${1:-}" ]; then
		log::error "File name required"
		return 1
	fi

	if [ ! -f "${1}" ] && [ ! -d "${1}" ]; then
		log::error "No such path ${1}"
		return 1
	fi
}

log.sh

log::header() {
	echo '=>' "$@" 1>&2
}

log::indicator() {
	echo '->' "$@" 1>&2
}

log::debug() {
	if tput colors &>/dev/null; then
		# XXX: Light gray color
		echo -e "\033[1;30m-> $*\033[0m" 1>&2
	else
		echo '->' "$@" 1>&2
	fi
}

log::info() {
	if tput colors &>/dev/null; then
		# XXX: Cyan
		echo -e "\033[0;36m-> $*\033[0m" 1>&2
	else
		echo '->' "$@" 1>&2
	fi
}

log::warn() {
	if tput colors &>/dev/null; then
		# XXX: bright yellow
		echo -e "\033[1;33m-> $*\033[0m" 1>&2
	else
		echo "->" "$@" 1>&2
	fi
}

log::error() {
	if tput colors &>/dev/null; then
		# XXX: Red
		echo -e "\033[31mERROR: $*\033[0m" 1>&2
	else
		echo "ERROR:" "$@" 1>&2
	fi
}

log::success() {
	if tput colors &>/dev/null; then
		# XXX: green
		echo -e "\033[32m-> $*\033[0m" 1>&2
	else
		echo "->" "$@" 1>&2
	fi
}

log::exec_command() {
	log::debug '$' "$@"
	"$@"
}

log::error_banner() {
	echo 1>&2
	echo 1>&2
	if tput colors &>/dev/null; then
		# XXX: red
		echo -e "\033[1;31m$(cat "${1}")\033[0m" 1>&2
	else
		cat "${1}"
	fi
	echo 1>&2
	echo 1>&2
}