//-------------------------------------------------------------------
//	studytty.cpp
//
//	This program shows current values of some fields within this
//	task's 'struct termios' data-structure for 'standard input'.
//
//		compile using:  $ g++ studytty.cpp -o studytty
//
//	Reference: W. Ricard Stevens, "Advanced Programming in the
//	Unix Environment," Addison-Wesley (1993).  [See Chapter 11
//	on "Terminal I/O" for a full discussion of these 'termios'
//	terminal control-code entries and their various effects.]   
//
//	programmer: ALLAN CRUSE
//	written on: 18 APR 2006
//-------------------------------------------------------------------

#include <stdio.h>	// for printf() 
#include <fcntl.h>	// for open() 
#include <unistd.h>	// for read() 
#include <termios.h>	// for tcgetattr()

int main( int argc, char **argv )
{
	// get the current 'struct termios' data-structure
	struct termios	tty;
	tcgetattr( STDIN_FILENO, &tty ); 

	// show the control-code values stored in the c_cc[] array
	printf( "\n" );
	printf( "     c_cc[ VINTR ] = 0x%02X \n", tty.c_cc[ VINTR ] );
	printf( "     c_cc[ VQUIT ] = 0x%02X \n", tty.c_cc[ VQUIT ] );
	printf( "    c_cc[ VERASE ] = 0x%02X \n", tty.c_cc[ VERASE ] );
	printf( "     c_cc[ VKILL ] = 0x%02X \n", tty.c_cc[ VKILL ] );
	printf( "      c_cc[ VEOF ] = 0x%02X \n", tty.c_cc[ VEOF ] );
	printf( "     c_cc[ VTIME ] = 0x%02X \n", tty.c_cc[ VTIME ] );
	printf( "      c_cc[ VMIN ] = 0x%02X \n", tty.c_cc[ VMIN ] );
	printf( "     c_cc[ VSWTC ] = 0x%02X \n", tty.c_cc[ VSWTC ] );
	printf( "    c_cc[ VSTART ] = 0x%02X \n", tty.c_cc[ VSTART ] );
	printf( "     c_cc[ VSTOP ] = 0x%02X \n", tty.c_cc[ VSTOP ] );
	printf( "     c_cc[ VSUSP ] = 0x%02X \n", tty.c_cc[ VSUSP ] );
	printf( "      c_cc[ VEOL ] = 0x%02X \n", tty.c_cc[ VEOL ] );
	printf( "  c_cc[ VREPRINT ] = 0x%02X \n", tty.c_cc[ VREPRINT ] );
	printf( "  c_cc[ VDISCARD ] = 0x%02X \n", tty.c_cc[ VDISCARD ] );
	printf( "   c_cc[ VWERASE ] = 0x%02X \n", tty.c_cc[ VWERASE ] );
	printf( "    c_cc[ VLNEXT ] = 0x%02X \n", tty.c_cc[ VLNEXT ] );
	printf( "     c_cc[ VEOL2 ] = 0x%02X \n", tty.c_cc[ VEOL2 ] );
	printf( "\n" );
}