lib/kmi/fmt.h
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 /*
  * $Id: fmt.h 4518 2008-07-28 15:39:28Z henningw $
  *
  * Copyright (C) 2006 Voice Sistem SRL
  *
  * This file is part of Kamailio, a free SIP server.
  *
  * Kamailio is free software; you can redistribute it and/or modify
  * it under the terms of the GNU General Public License as published by
  * the Free Software Foundation; either version 2 of the License, or
  * (at your option) any later version.
  *
  * Kamailio is distributed in the hope that it will be useful,
  * but WITHOUT ANY WARRANTY; without even the implied warranty of
  * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
  * GNU General Public License for more details.
  *
  * You should have received a copy of the GNU General Public License
  * along with this program; if not, write to the Free Software
9e1ff448
  * Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston, MA  02110-1301, USA.
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  *
  *
  * History:
  * ---------
  *  2006-09-08  first version (bogdan)
  */
 
 /*!
  * \file 
  * \brief MI :: Format handling
  * \ingroup mi
  */
 
 
 
 #ifndef _MI_FMT_H_
 #define _MI_FMT_H_
 
 #include <stdarg.h>
 #include <errno.h>
 
 /*! \brief size of the buffer used for printing the FMT */
 #define DEFAULT_MI_FMT_BUF_SIZE 2048
 
 extern char *mi_fmt_buf;
 extern int  mi_fmt_buf_len;
 
 int mi_fmt_init( unsigned int size );
 
 static inline char* mi_print_fmt(char *fmt, va_list ap, int *len)
 {
 	int n;
 
 	if (mi_fmt_buf==NULL) {
 		if (mi_fmt_init(DEFAULT_MI_FMT_BUF_SIZE)!=0) {
 			LM_ERR("failed to init\n");
 			return 0;
 		}
 	}
 
 	n = vsnprintf( mi_fmt_buf, mi_fmt_buf_len, fmt, ap);
 	if (n<0 || n>=mi_fmt_buf_len) {
 		LM_ERR("formatting failed with n=%d, %s\n",n,strerror(errno));
 		return 0;
 	}
 
 	*len = n;
 	return mi_fmt_buf;
 }
 
 #endif