#include <stdio.h>
#include <stdarg.h>
int virtual_getc_str(void *sp, const void *obj)
// get next chat from string obj, save point is ptr to string char ptr
{
int ch;
const char *s = (const char *)obj;
const char**spc= (const char**)sp;
if (!s || !spc) return EOF; // error
if (!*spc) *spc = s; // first call, init savepoint
if (!**spc) return EOF; // EOS
ch = **spc; (*spc)++ ;
return ch;
}
void virtual_ungetc_str(void *sp, int c, const void *obj)
// if can, one step back savepoint in s
{
const char *s = (const char *)obj;
const char**spc= (const char**)sp;
if (s && spc && *spc > s) (*spc)--;
}
int vsscanf ( const char * s
, const char * format
, va_list arg
)
{
return format_scan(s, format, arg, &virtual_getc_str, &virtual_ungetc_str);
};
int sscanf ( const char * s
, const char * format
, ...
)
{
va_list arg;
int n;
return n;
}