/***
 * Input/output test #1
 *
 * Change Log:
 * 2003/10/22 ghort	created
 * 2003/11/03 ghort	cleaned up and integrated
 * 2003/11/04 pallas	further cleanups
 * 2003/11/07 pallas	modified to pass shorter buffer to getc
 * 2004/10/25 pallas	updated for new assignment specification
 */

static char *	desc =
	"Input/output test #1\n"
	"Tests basic input output functions (printk, getc, "
	"getc_try, and gets).\n\n";


#include "../../assignment-1.h"
#include "../defs.h"


#define	BUFFER_LENGTH	128
#define POLL_DELAY_MS	1000


void
assignment_test (void)
{
	int 	key;
	int 	len;
	char	buf [BUFFER_LENGTH];

	printk (desc);

	/*
	 * Test blocking getc ().
	 */
	printk ("Testing getc (), write something (<enter> to finish):\n");
	do {
		key = getc ();
		if (key != '\n')
			printk ("<'%c', %d> ", key, key);
	} while (key != '\n');
	printk ("\n");

	/*
	 * Test nonblocking getc_try ().
	 */
	printk ("Testing getc_try (), write something (<enter> to finish):\n");
	do {
		key = getc_try ();
		if (key == EWOULDBLOCK) {
			/*
			 * Wait a while so that the keyboard buffer
			 * can fill a bit.
			 */
			thread_usleep (POLL_DELAY_MS * 1000);
			printk (".");

		} else if (key >= 0) {
			if (key != '\n')
				printk ("<'%c', %d> ", key, key);

		} // other cases are ignored

	} while (key != '\n');
	printk ("\n");

	/*
	 * Test blocking gets ().
	 */
	printk ("Testing gets (), write something (<enter> to finish):\n");
	len = gets (buf, sizeof (buf));
	if (buf [len - 1] == '\n')
		buf [len - 1] = '\0';

	printk ("You have written: '%s'\n", buf);


	// this statement must be reached
	printk ("Test passed ...\n");
}