The Mana World: tmw/src/utils/strprintf.cpp Source File

00001 /*
00002  *  The Mana World
00003  *  Copyright (C) 2007  The Mana World Development Team
00004  *
00005  *  This file is part of The Mana World.
00006  *
00007  *  This program is free software; you can redistribute it and/or modify
00008  *  it under the terms of the GNU General Public License as published by
00009  *  the Free Software Foundation; either version 2 of the License, or
00010  *  any later version.
00011  *
00012  *  This program is distributed in the hope that it will be useful,
00013  *  but WITHOUT ANY WARRANTY; without even the implied warranty of
00014  *  MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
00015  *  GNU General Public License for more details.
00016  *
00017  *  You should have received a copy of the GNU General Public License
00018  *  along with this program; if not, write to the Free Software
00019  *  Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA  02111-1307  USA
00020  */
00021 
00022 #include "utils/strprintf.h"
00023 
00024 #include <cstdarg>
00025 #include <cstdio>
00026 
00027 std::string strprintf(char const *format, ...)
00028 {
00029     char buf[256];
00030     va_list(args);
00031     va_start(args, format);
00032     int nb = vsnprintf(buf, 256, format, args);
00033     va_end(args);
00034     if (nb < 256)
00035     {
00036         return buf;
00037     }
00038     // The static size was not big enough, try again with a dynamic allocation.
00039     ++nb;
00040     char *buf2 = new char[nb];
00041     va_start(args, format);
00042     vsnprintf(buf2, nb, format, args);
00043     va_end(args);
00044     std::string res(buf2);
00045     delete [] buf2;
00046     return res;
00047 }