32 lines
808 B
C
32 lines
808 B
C
|
//#include "format_scan.h"
|
||
|
|
|
||
|
|
static 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);
|
||
|
|
};
|