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+/*
+ * Copyright © 2008 Dennis Kasprzyk
+ *
+ * Permission to use, copy, modify, distribute, and sell this software
+ * and its documentation for any purpose is hereby granted without
+ * fee, provided that the above copyright notice appear in all copies
+ * and that both that copyright notice and this permission notice
+ * appear in supporting documentation, and that the name of
+ * Dennis Kasprzyk not be used in advertising or publicity pertaining to
+ * distribution of the software without specific, written prior permission.
+ * Dennis Kasprzyk makes no representations about the suitability of this
+ * software for any purpose. It is provided "as is" without express or
+ * implied warranty.
+ *
+ * DENNIS KASPRZYK DISCLAIMS ALL WARRANTIES WITH REGARD TO THIS SOFTWARE,
+ * INCLUDING ALL IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS, IN
+ * NO EVENT SHALL DENNIS KASPRZYK BE LIABLE FOR ANY SPECIAL, INDIRECT OR
+ * CONSEQUENTIAL DAMAGES OR ANY DAMAGES WHATSOEVER RESULTING FROM LOSS
+ * OF USE, DATA OR PROFITS, WHETHER IN AN ACTION OF CONTRACT,
+ * NEGLIGENCE OR OTHER TORTIOUS ACTION, ARISING OUT OF OR IN CONNECTION
+ * WITH THE USE OR PERFORMANCE OF THIS SOFTWARE.
+ *
+ * Authors: Dennis Kasprzyk <onestone@compiz-fusion.org>
+ */
+
+#include <compiz.h>
+
+#include <cstring>
+#include <cstdarg>
+#include <cstdio>
+
+CompString compPrintf (const char *format, ...)
+{
+ va_list ap;
+ CompString rv;
+
+ va_start (ap, format);
+ rv = compPrintf (format, ap);
+ va_end (ap);
+
+ return rv;
+}
+
+CompString compPrintf (const char *format, va_list ap)
+{
+ va_list aq;
+ unsigned int size = strlen (format) + 1;
+ int n;
+ char *str;
+
+ if (!format)
+ return CompString ("");
+
+ str = new char[size];
+
+ if (!str)
+ return CompString ("");
+
+ while (1)
+ {
+ /* Try to print in the allocated space. */
+ va_copy (aq, ap);
+ n = vsnprintf (str, size, format, aq);
+ va_end (aq);
+
+ /* If that worked, leave the loop. */
+ if (n > -1 && n < (int) size)
+ break;
+
+ /* Else try again with more space. */
+ if (n > -1) /* glibc 2.1 */
+ size = n + 1; /* precisely what is needed */
+ else /* glibc 2.0 */
+ size++; /* one more than the old size */
+
+ delete [] str;
+ str = new char[size];
+
+ if (!str)
+ {
+ return CompString ("");
+ }
+ }
+
+ CompString rv (str);
+ delete [] str;
+ return rv;
+}