From 3534b428629be185e096be99e3bd5fdfe32d5544 Mon Sep 17 00:00:00 2001
From: Laurent Bercot <ska-skaware@skarnet.org>
Date: Thu, 18 Sep 2014 18:55:44 +0000
Subject: initial commit with rc for skalibs-2.0.0.0

---
 src/libstddjb/vbaprintf.c | 23 +++++++++++++++++++++++
 1 file changed, 23 insertions(+)
 create mode 100644 src/libstddjb/vbaprintf.c

(limited to 'src/libstddjb/vbaprintf.c')

diff --git a/src/libstddjb/vbaprintf.c b/src/libstddjb/vbaprintf.c
new file mode 100644
index 0000000..efc2bd1
--- /dev/null
+++ b/src/libstddjb/vbaprintf.c
@@ -0,0 +1,23 @@
+/* ISC license. */
+
+#include <stdarg.h>
+#include <stdio.h>
+#include <skalibs/stralloc.h>
+#include <skalibs/bufalloc.h>
+#include <skalibs/lolstdio.h>
+
+int vbaprintf (bufalloc *ba, char const *format, va_list args)
+{
+  int r ;
+  {
+    va_list ugly ;
+    va_copy(ugly, args) ;
+    r = vsnprintf(0, 0, format, ugly) ;
+    va_end(ugly) ;
+  }
+  if (r < 0) return r ;
+  if (!stralloc_readyplus(&ba->x, (unsigned int)r + 1)) return -1 ;
+  r = vsnprintf(ba->x.s + ba->x.len, (unsigned int)r + 1, format, args) ;
+  if (r > 0) ba->x.len += r ;
+  return r ;
+}
-- 
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