Magomed Kostoev (mkostoevr)
1f4d74f500
git-svn-id: svn://kolibrios.org@8622 a494cfbc-eb01-0410-851d-a64ba20cac60
45 lines
1.1 KiB
C
45 lines
1.1 KiB
C
#include "format_scan.h"
|
|
#include <string.h>
|
|
|
|
char *__scanf_buffer=NULL;
|
|
|
|
static int __virtual_getc_con(void *sp, const void *obj)
|
|
// get next chat from string obj, save point is ptr to string char ptr
|
|
{
|
|
int ch;
|
|
const char**spc= (const char**)sp;
|
|
if (!spc) return EOF; // error
|
|
if (!*spc) *spc = __scanf_buffer; // first call, init savepoint
|
|
|
|
while (!**spc) // need to read more
|
|
{
|
|
if(!gets(__scanf_buffer)) return EOF;
|
|
*spc = __scanf_buffer;
|
|
strcat(__scanf_buffer,"\n"); // imitate delimiter
|
|
}
|
|
if (**spc == 26 || **spc == 3) // ^C ^Z end of scan, clear buffer
|
|
{
|
|
*spc = __scanf_buffer;
|
|
*__scanf_buffer = 0;
|
|
return EOF; // ^C ^Z
|
|
}
|
|
|
|
ch = **spc; (*spc)++ ;
|
|
return ch;
|
|
}
|
|
|
|
static void __virtual_ungetc_con(void *sp, int c, const void *obj)
|
|
// if can, one step back savepoint in s
|
|
{
|
|
const char**spc= (const char**)sp;
|
|
|
|
if (spc && *spc > __scanf_buffer) (*spc)--;
|
|
//printf("Ungetc '%c'[%d];", c, c);
|
|
}
|
|
|
|
|
|
int vscanf(const char * format, va_list arg)
|
|
{
|
|
return _format_scan(NULL, format, arg, &__virtual_getc_con, &__virtual_ungetc_con);
|
|
}
|