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#include <system.h>

unsigned char kbdus[128] =
{
    0,  27, '1', '2', '3', '4', '5', '6', '7', '8',	/* 9 */
  '9', '0', '-', '=', '\b',	/* Backspace */
  '\t',			/* Tab */
  'q', 'w', 'e', 'r',	/* 19 */
  't', 'y', 'u', 'i', 'o', 'p', '[', ']', '\n',		/* Enter key */
    0,			/* 29   - Control */
  'a', 's', 'd', 'f', 'g', 'h', 'j', 'k', 'l', ';',	/* 39 */
 '\'', '`',   0,		/* Left shift */
 '\\', 'z', 'x', 'c', 'v', 'b', 'n',			/* 49 */
  'm', ',', '.', '/',   0,					/* Right shift */
  '*',
    0,	/* Alt */
  ' ',	/* Space bar */
    0,	/* Caps lock */
    0,	/* 59 - F1 key ... > */
    0,   0,   0,   0,   0,   0,   0,   0,
    0,	/* < ... F10 */
    0,	/* 69 - Num lock*/
    0,	/* Scroll Lock */
    0,	/* Home key */
    0,	/* Up Arrow */
    0,	/* Page Up */
  '-',
    0,	/* Left Arrow */
    0,
    0,	/* Right Arrow */
  '+',
    0,	/* 79 - End key*/
    0,	/* Down Arrow */
    0,	/* Page Down */
    0,	/* Insert Key */
    0,	/* Delete Key */
    0,   0,   0,
    0,	/* F11 Key */
    0,	/* F12 Key */
    0,	/* All other keys are undefined */
};

// Command line stuff. A 256 character buffer holding each character entered to
// be compared with the commands.
// THIS SPOT IS A LIKELY CULPRIT
unsigned char *cmdbuff[255];
unsigned int cmdbcnt = -1;

// COMMAND LIBRARY
unsigned char *uptime[2] = { 'u', 'p', 't' };

void keyboard_handler(struct regs *r)
{
    unsigned char scancode;

    scancode = inportb(0x60);

    if (scancode & 0x80)
    {
    // TODO: Shift, alt, ctrl support
    }
    else
    {
        putch(kbdus[scancode]);
        // command parser!
	cmdbcnt++;
	cmdbuff[cmdbcnt] = kbdus[scancode];
        // THIS SPOT IS A LIKELY CULPRIT
	if (kbdus[scancode] == '\n') {
		if (!kstrcmp(*cmdbuff[0], *uptime[0]) && !kstrcmp(*cmdbuff[1], *uptime[1]) && !kstrcmp(*cmdbuff[2], *uptime[2])) {
			puts("Uptime: ");
			puts(uptime_days);
			puts(" days, ");
			puts(uptime_hours);
			puts(" hours, ");
			puts(uptime_minutes);
			puts(" minutes, ");
			puts(uptime_seconds);
			puts(" seconds.\n\n");
		}
        cmdbcnt = -1;
	}

    }
}

void keyboard_install()
{
    irq_install_handler(1, keyboard_handler);
}

Code: Select all

int strcmp(const char *s1, const char *s2) 
{
        char x;
        for(;;) 
       {
                x = *s1;
                if(x != *s2)
                        break;
                if(!x)
                        break;
                s1++;
                s2++;
        }
        return x - *s2;
}