void
cwrite(char *buf, usize nbytes)
{
for (; nbytes > 0; nbytes--, buf++)
cputc0(*buf);
updatecursor();
}
void
cclear(void)
{
int i;
for (i = 0; i < CSIZE; i++) {
vmem[i] = SPACE;
}
pos = 0;
updatecursor();
}
void newLine(void)
{
currentColumn = 0;
++currentLine;
if(currentLine >= LINESPERSCREEN)
{
memcpy((void*)(VIDMEMSTART), (void*)(VIDMEMSTART + 2 * CHARSPERLINE), (LINESPERSCREEN - 1) * 160);
memset((void*)(VIDMEMSTART + ((LINESPERSCREEN - 1) * CHARSPERLINE) * 2), 0, CHARSPERLINE * 2);
currentLine = LINESPERSCREEN - 1;
}
updatecursor();
writes("enigmOS :> ");
}
void incChar(unsigned short cols)
{
currentColumn += cols;
while(currentColumn >= CHARSPERLINE)
{
currentColumn %= CHARSPERLINE;
++currentLine;
if(currentLine >= LINESPERSCREEN)
{
memcpy((void*)(VIDMEMSTART), (void*)(VIDMEMSTART + 2 * CHARSPERLINE), (LINESPERSCREEN - 1) * 160);
memset((void*)(VIDMEMSTART + ((LINESPERSCREEN - 1) * CHARSPERLINE) * 2), 0, CHARSPERLINE * 2);
currentLine = LINESPERSCREEN - 1;
}
}
updatecursor();
}
void cls(void)
{
memset((void*)(VIDMEMSTART), 0, (LINESPERSCREEN - 1) * 160);
updatecursor();
writes("enigmOS :> ");
}
void
cvprintf(char *fmt, va_list ap)
{
char c;
char *s;
if (fmt == nil)
panic("null fmt");
for (; (c = *fmt); fmt++) {
long npad = 0;
char padchar = ' ';
if (c != '%') {
cputc0(c);
continue;
}
fmt++;
// padding character
if (*fmt == '0') {
padchar = '0';
fmt++;
}
// min field width
if (isdigit(*fmt)) {
npad = strtol(fmt, &fmt, 0);
}
c = *fmt;
if (c == 0)
break;
switch (c) {
case '%':
cputc0('%');
break;
case 'c':
cputc0((char)va_arg(ap, int));
case 's':
s = va_arg(ap, char *);
if (s == 0)
s = "(null)";
for (; *s; s++)
cputc0(*s);
break;
case 'd':
printint(va_arg(ap, int), 10, 1, npad, padchar);
break;
case 'o':
printint(va_arg(ap, int), 8, 0, npad, padchar);
break;
case 'l':
printint(va_arg(ap, long), 10, 1, npad, padchar);
break;
case 'u':
printint(va_arg(ap, long), 10, 0, npad, padchar);
break;
case 'p':
case 'x':
printint(va_arg(ap, long), 16, 0, npad, padchar);
break;
case 'b':
printint(va_arg(ap, long), 2, 0, npad, padchar);
break;
default:
cputc0('%');
cputc0(c);
break;
}
}
updatecursor();
}
void
cputs(char *s)
{
cputs0(s);
updatecursor();
}
void
cputc(uchar c)
{
cputc0(c);
updatecursor();
}
