src/console/vsprintf.c

/*
 *  linux/lib/vsprintf.c
 *
 *  Copyright (C) 1991, 1992  Linus Torvalds
 */

/* vsprintf.c -- Lars Wirzenius & Linus Torvalds. */
/*
 * Wirzenius wrote this portably, Torvalds fucked it up :-)
 */
#include <stdarg.h>
#include <string.h>

int vtxprintf(void (*tx_byte)(unsigned char byte), const char *fmt, va_list args);

/* FIXME this global makes vsprintf non-reentrant */

static char *str_buf;
static void str_tx_byte(unsigned char byte)
{
	*str_buf = byte;
	str_buf++;
}

int vsprintf(char * buf, const char *fmt, va_list args)
{
	int i;
	str_buf = buf;
	i = vtxprintf(str_tx_byte, fmt, args);
	/* maeder/Ispiri -- The null termination was missing a deference */
	/*                  and was just zeroing out the pointer instead */
	*str_buf = '\0';
	return i;
}

int sprintf(char * buf, const char *fmt, ...)
{
	va_list args;
	int i;

	va_start(args, fmt);
	i=vsprintf(buf,fmt,args);
	va_end(args);
	return i;
}