usr/klibc/asprintf.c

/*
 * asprintf.c
 */

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

int asprintf(char **bufp, const char *format, ...)
{
	va_list ap, ap1;
	int rv;
	int bytes;
	char *p;

	va_start(ap, format);
	va_copy(ap1, ap);

	bytes = vsnprintf(NULL, 0, format, ap1) + 1;
	va_end(ap1);

	*bufp = p = malloc(bytes);
	if (!p)
		return -1;

	rv = vsnprintf(p, bytes, format, ap);
	va_end(ap);

	return rv;
}
1	/*
2	* asprintf.c
3	*/
4
5	#include <stdio.h>
6	#include <stdlib.h>
7	#include <stdarg.h>
8
9	int asprintf(char *bufp, const char format, ...)
10	{
11	va_list ap, ap1;
12	int rv;
13	int bytes;
14	char *p;
15
16	va_start(ap, format);
17	va_copy(ap1, ap);
18
19	bytes = vsnprintf(NULL, 0, format, ap1) + 1;
20	va_end(ap1);
21
22	*bufp = p = malloc(bytes);
23	if (!p)
24	return -1;
25
26	rv = vsnprintf(p, bytes, format, ap);
27	va_end(ap);
28
29	return rv;
30	}