56 lines
1.3 KiB
C
56 lines
1.3 KiB
C
#ifndef __vasprintf_compat_h
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#define __vasprintf_compat_h
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/**
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* @file
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* @brief Do not use, json-c internal, may be changed or removed at any time.
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*/
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#include "snprintf_compat.h"
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#if !defined(HAVE_VASPRINTF)
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extern int vsnprintf(char *buf, unsigned long size, const char *fmt, __builtin_va_list args);
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extern int vsprintf(char *str, const char *format, va_list ap);
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/* CAW: compliant version of vasprintf */
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static int vasprintf(char **buf, const char *fmt, va_list ap)
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{
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#ifndef WIN32
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static char _T_emptybuffer = '\0';
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#endif /* !defined(WIN32) */
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int chars;
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char *b;
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if (!buf) {
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return -1;
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}
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#ifdef WIN32
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chars = _vscprintf(fmt, ap) + 1;
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#else /* !defined(WIN32) */
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/* CAW: RAWR! We have to hope to god here that vsnprintf doesn't overwrite
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our buffer like on some 64bit sun systems.... but hey, its time to move on */
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chars = vsnprintf(&_T_emptybuffer, 0, fmt, ap) + 1;
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if (chars < 0) {
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chars *= -1; /* CAW: old glibc versions have this problem */
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}
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#endif /* defined(WIN32) */
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b = (char *)malloc(sizeof(char) * chars);
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if (!b) {
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return -1;
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}
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if ((chars = vsprintf(b, fmt, ap)) < 0) {
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free(b);
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} else {
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*buf = b;
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}
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return chars;
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}
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#endif /* !HAVE_VASPRINTF */
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#endif /* __vasprintf_compat_h */
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