kc3-lang/libbsd/src/vasprintf.c

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• Hash : ec7f5ee9
  Author :
  Date : 2024-02-12T01:04:37
  

  Add vasprintf() and asprintf() functions missing on AIX These functions are used by code in the library, even though these functions started as GNU extensions, they are present in all BSDs, so we expose them as part of our interface on AIX.

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• src/vasprintf.c

• /*
   * Copyright © 2010-2024 Guillem Jover <guillem@hadrons.org>
   *
   * Redistribution and use in source and binary forms, with or without
   * modification, are permitted provided that the following conditions
   * are met:
   * 1. Redistributions of source code must retain the above copyright
   *    notice, this list of conditions and the following disclaimer.
   * 2. Redistributions in binary form must reproduce the above copyright
   *    notice, this list of conditions and the following disclaimer in the
   *    documentation and/or other materials provided with the distribution.
   * 3. The name of the author may not be used to endorse or promote products
   *    derived from this software without specific prior written permission.
   *
   * THIS SOFTWARE IS PROVIDED ``AS IS'' AND ANY EXPRESS OR IMPLIED WARRANTIES,
   * INCLUDING, BUT NOT LIMITED TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY
   * AND FITNESS FOR A PARTICULAR PURPOSE ARE DISCLAIMED.  IN NO EVENT SHALL
   * THE AUTHOR BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL,
   * EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT LIMITED TO,
   * PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, DATA, OR PROFITS;
   * OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY,
   * WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR
   * OTHERWISE) ARISING IN ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF
   * ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
   */
  
  #include <config.h>
  
  #include <stdarg.h>
  #include <stdio.h>
  #include <stdlib.h>
  
  int
  vasprintf(char **strp, char const *fmt, va_list args)
  {
  	va_list args_copy;
  	int needed, n;
  	char *str;
  
  	va_copy(args_copy, args);
  	needed = vsnprintf(NULL, 0, fmt, args_copy);
  	va_end(args_copy);
  
  	if (needed < 0) {
  		*strp = NULL;
  		return -1;
  	}
  
  	str = malloc(needed + 1);
  	if (str == NULL) {
  		*strp = NULL;
  		return -1;
  	}
  
  	n = vsnprintf(str, needed + 1, fmt, args);
  	if (n < 0) {
  		free(str);
  		str = NULL;
  	}
  
  	*strp = str;
  
  	return n;
  }
  

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