Vhex-kernel/src/user/shell/main.c

#include <lib/display.h>
#include <lib/unistd.h>
#include "util.h"

//TODO: documentation.
int main(void)
{
	char input[12];
	int cmd_size;
	//char **argv;
	//int argc;
	//int STDOUT_FILENO;

	// Try to open TTY
	// @note:
	// 	We use O_DIRECT to avoid cache
	// generation because we do not have a
	// lot of memory.
	/*STDOUT_FILENO = open("/dev/tty", O_DIRECT);
	if (STDOUT_FILENO < 0)
	{
		// Display error.
		display_t disp;
		dopen(&disp, "default");
		dclear(&disp);
		dprint(&disp, 0, 0, "User program fail to open TTY");
		dprint(&disp, 0, 1, "Wait user manual reset...");
		dupdate(&disp);

		// Wait user manual reset.
		while (1)
		{
			// @note: we can use "sleep" because we
			// are in privilegied mode.
			// TODO: use sleep syscall !
			__asm__ volatile ("sleep");
		}
	}*/

	// Shell main loop.
	write(STDOUT_FILENO, "Boot Complete !\n", 16);
	while (1)
	{
		// Get user command.
		write(STDOUT_FILENO, ">", 1);
		cmd_size = read(STDIN_FILENO, input, 12);

		// Remove '\n' char.
		// FIXME: create argc, argv !!
		input[cmd_size - 1] = '\0';

		// Check buit-in.
		if (check_builtin(input) != 0)
		{
			write(STDOUT_FILENO, input, cmd_size - 1);
			write(STDOUT_FILENO, ": command not found\n", 20);
		} else {
			write(STDOUT_FILENO, input, cmd_size - 1);
			write(STDOUT_FILENO, ": command found :D !\n", 21);
		}
	}
	return (0);
}