File: vasprintf_compat.h

package info (click to toggle)
mpich 3.4.1-5~deb11u1
  • links: PTS, VCS
  • area: main
  • in suites: bullseye
  • size: 137,032 kB
  • sloc: ansic: 837,728; cpp: 67,921; f90: 53,548; javascript: 40,178; perl: 19,079; sh: 15,965; xml: 12,383; makefile: 8,369; fortran: 7,851; python: 2,706; java: 1,989; asm: 297; ruby: 103; lisp: 19; php: 8; sed: 4
file content (44 lines) | stat: -rw-r--r-- 1,011 bytes parent folder | download
1
2
3
4
5
6
7
8
9
10
11
12
13
14
15
16
17
18
19
20
21
22
23
24
25
26
27
28
29
30
31
32
33
34
35
36
37
38
39
40
41
42
43
44
#ifndef __vasprintf_compat_h
#define __vasprintf_compat_h

/**
 * @file
 * @brief Do not use, json-c internal, may be changed or removed at any time.
 */

#include "snprintf_compat.h"

/* CAW: compliant version of vasprintf */
static int json_vasprintf(char **buf, const char *fmt, va_list ap)
{
#ifndef WIN32
	static char _T_emptybuffer = '\0';
#endif /* !defined(WIN32) */
	int chars;
	char *b;

	if(!buf) { return -1; }

#ifdef WIN32
	chars = _vscprintf(fmt, ap)+1;
#else /* !defined(WIN32) */
	/* CAW: RAWR! We have to hope to god here that vsnprintf doesn't overwrite
	   our buffer like on some 64bit sun systems.... but hey, its time to move on */
	chars = vsnprintf(&_T_emptybuffer, 0, fmt, ap)+1;
	if(chars < 0) { chars *= -1; } /* CAW: old glibc versions have this problem */
#endif /* defined(WIN32) */

	b = (char*)malloc(sizeof(char)*chars);
	if(!b) { return -1; }

	if((chars = vsprintf(b, fmt, ap)) < 0)
	{
		free(b);
	} else {
		*buf = b;
	}

	return chars;
}

#endif /* __vasprintf_compat_h */