Advanced Gets

advgets.c

#include <stdio.h>
#include <stdlib.h>
#include <string.h>
#include <unistd.h>
#include <stdarg.h>

int advgets(FILE *fp, char *buf, size_t sz, char *fmt, ...)
{
        va_list ap;
        int ret;

        if (fgets(buf, sz, fp) == NULL)
                return -1;

        va_start(ap, fmt);
        ret = vsscanf(buf, fmt, ap);
        va_end(ap);

        return ret;
}