#!/bin/bash

# colors used
standouton=$(tput smso 2>/dev/null)
standoutoff=$(tput rmso 2>/dev/null)
redon=$(tput setaf 1 2>/dev/null)$(tput bold 2>/dev/null)
redoff=$(tput sgr0 2>/dev/null)
greenon=$(tput setaf 2 2>/dev/null)$(tput bold 2>/dev/null)
greenoff=$(tput sgr0 2>/dev/null)
yellowon=$(tput setaf 3 2>/dev/null)$(tput bold 2>/dev/null)
yellowoff=$(tput sgr0 2>/dev/null)

# if not empty, only error messages are printed
quiet=

# Prints a message.
# $1    = message
# $2... = attributes (can be empty)
do_message()
{
	local msg="$1"
	shift

	local options=
	while [ -n "$1" -a "${1#-}" != "$1" ]
	do
		options+=" $1"
		shift
	done

	local on=
	local off=
	if [ -n "$1" ]; then
		eval on=\"\$$1on\"
		eval off=\"\$$1off\"
	fi
	echo $options "$on$msg$off"
}

# Prints an error message prefixed by "Error: " and aborts script execution.
# $1 = message to print to stderr
error()
{
	do_message "Error: $1" red >&2
	[ $CLEANUP_LEVEL -eq 0 ] && exit 3
}

# Prints a warning message prefixed by "Warning: ".
# $1 = message to print to stderr
warning()
{
	do_message "Warning: $1" yellow >&2
}

# Prints a normal message.
# $1 = message to print
# $2 = attribute (can be empty)
message()
{
	[ -n "$quiet" ] || do_message "$@"
}

has_option "-q" && quiet=1