kolibrios/programs/develop/ktcc/trunk/libc/stdio/fscanf.c
siemargl cd8030cee3 ctype+scanf fix
git-svn-id: svn://kolibrios.org@6432 a494cfbc-eb01-0410-851d-a64ba20cac60
2016-05-16 11:03:59 +00:00

43 lines
833 B
C

#include <stdio.h>
#include <stdarg.h>
#include <stdlib.h>
int virtual_getc_file(void *sp, const void *obj)
// get next chat from file obj, save point is ptr to string char ptr
{
FILE *f = (FILE *)obj;
int ch = fgetc(f);
//printf("getc '%c'[%d];", ch, ch);
return ch;
}
void virtual_ungetc_file(void *sp, int c, const void *obj)
// if can, one step back savepoint in s
{
FILE *f = (FILE *)obj;
if (f) ungetc(c, f);
}
int vfscanf ( FILE * stream, const char * format, va_list arg )
{
return format_scan(stream, format, arg, &virtual_getc_file, &virtual_ungetc_file);
};
int fscanf ( FILE * stream, const char * format, ...)
{
va_list arg;
int n;
va_start(arg, format);
n = vfscanf(stream, format, arg);
va_end(arg);
return n;
}