wm: teppich

ref: a9ee87279fb13fb9e068fbd97475b4deb2295779
dir: /libc/scanf.c/

#include <u.h>
#include <libc.h>
#include <cons.h>

static char*
get_char()
{
	int i = 0;
	char *buff, c;
	while (1 == 1)
	{
		c = cons_read(defcons);
		cons_putc(defcons, c);
		if (c != '\r')
		{
			buff[i] = c;
			i++;
		}
		else break;
	}
	return buff; 
}

int
scanf(char *str, ...)
{
	va_list ap;
	va_start(ap, str);

	int count = 0;
	char *buffer, *temp;

	while (*str != '\0')
	{
		if (*str == '%')
		{
			buffer = get_char();
			str++;
			switch(*str)
			{
				case 'c':
					*va_arg(ap, char*) = buffer[0];
					count++;
					break;
				case 's':
					*va_arg(ap, char**) = buffer;
					count++;
					break;
				case 'd':
					*va_arg(ap, int*) = strtol(buffer, &temp, 10);
					count++;
					break;
				case 'x':
					*va_arg(ap, int*) = strtol(buffer, &temp, 16);
					count++;
					break;
				default:
					break;
			}
		}
		str++;
	}
	va_end(ap);
	return count;
}