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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;
}
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