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#include <stdarg.h>
#include <sys/types.h>
#include <stdlib.h>
#include "dietstdio.h"
#include <unistd.h>
struct str_data {
unsigned char* str;
};
static int sgetc(struct str_data* sd) {
register unsigned int ret = *(sd->str++);
return (ret)?(int)ret:-1;
}
static int sputc(int c, struct str_data* sd) {
return (*(--sd->str)==c)?c:-1;
}
int vsscanf(const char* str, const char* format, va_list arg_ptr)
{
struct str_data fdat = { (unsigned char*)str };
struct arg_scanf farg = { (void*)&fdat, (int(*)(void*))sgetc, (int(*)(int,void*))sputc };
return __v_scanf(&farg,format,arg_ptr);
}
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