ref: 506fdba9e439717fc4331ab4bb05541dd2aba57e
dir: /libc/scanf.c/
#include <u.h> #include <libc.h> #include <vga.h> #include <ps2.h> int scanf(char *str, ...) { va_list vl; int i = 0, j=0, ret = 0; char buff[100] = {0}, tmp[20], c; char *out_loc; while(c != '\r') { c = ps2_getc(); vga_putc(c); buff[i] = c; i++; } va_start( vl, str ); i = 0; while (str && str[i]) { if(str[i] == '%') { i++; switch (str[i]) { case 'c': { *(char*)va_arg(vl, char*) = buff[j]; j++; ret++; break; } case 'd': { *(int*)va_arg( vl, int* ) = strtol(&buff[j], &out_loc, 10); j+=out_loc -&buff[j]; ret++; break; } case 'x': { *(int *)va_arg( vl, int* ) = strtol(&buff[j], &out_loc, 16); j += out_loc -&buff[j]; ret++; break; } } } else { buff[j] =str[i]; j++; } i++; } va_end(vl); return ret; }