usr/klibc/vfprintf.c

/*
 * vfprintf.c
 */

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

#define BUFFER_SIZE	32768

int vfprintf(FILE * file, const char *format, va_list ap)
{
	int rv;
	char buffer[BUFFER_SIZE];

	rv = vsnprintf(buffer, BUFFER_SIZE, format, ap);

	if (rv < 0)
		return rv;

	if (rv > BUFFER_SIZE - 1)
		rv = BUFFER_SIZE - 1;

	return _fwrite(buffer, rv, file);
}