client

#!/bin/bash

SFIFO=/tmp/led_server_fifo
CFIFO=/tmp/led_client_fifo.$$

get_cmd_name()
{
	if [ "$1" = "get_state" ]; then
		cmd_name="get-led-state"
	elif [ "$1" = "set_state" ]; then
		cmd_name="set-led-state"
	elif [ "$1" = "set_color" ]; then
		cmd_name="set-led-color"
	elif [ "$1" = "get_color" ]; then
		cmd_name="get-led-color"
	elif [ "$1" = "set_rate" ]; then
		cmd_name="set-led-rate"
	elif [ "$1" = "get_rate" ]; then
		cmd_name="get-led-rate"
	else
		return 1
	fi
	return 0
}

if [ ! -p $SFIFO ]; then
	echo "'$SFIFO' does not exist"
	exit 1
fi

if ! mkfifo $CFIFO; then 
	echo "Can not create fifo '$cfifo'"
	exit 1
fi

trap "unlink $CFIFO; exit 0" TERM INT

while echo -n "Type command: "; read cmd prm
do
	if ! get_cmd_name $cmd;
	then
		echo "Unknown function '$cmd'"
		continue
	fi
	echo "$$ ${cmd_name} ${prm}" >> $SFIFO
	res=`< $CFIFO` 
	echo -n "Result: $res"
	echo
done

unlink $CFIFO