usr/src/lib/libast/common/vec/vecfree.c

   1 /***********************************************************************
   2 *                                                                      *
   3 *               This software is part of the ast package               *
   4 *          Copyright (c) 1985-2010 AT&T Intellectual Property          *
   5 *                      and is licensed under the                       *
   6 *                  Common Public License, Version 1.0                  *
   7 *                    by AT&T Intellectual Property                     *
   8 *                                                                      *
   9 *                A copy of the License is available at                 *
  10 *            http://www.opensource.org/licenses/cpl1.0.txt             *
  11 *         (with md5 checksum 059e8cd6165cb4c31e351f2b69388fd9)         *
  12 *                                                                      *
  13 *              Information and Software Systems Research               *
  14 *                            AT&T Research                             *
  15 *                           Florham Park NJ                            *
  16 *                                                                      *
  17 *                 Glenn Fowler <gsf@research.att.com>                  *
  18 *                  David Korn <dgk@research.att.com>                   *
  19 *                   Phong Vo <kpv@research.att.com>                    *
  20 *                                                                      *
  21 ***********************************************************************/
  22 #pragma prototyped
  23 /*
  24  * Glenn Fowler
  25  * AT&T Bell Laboratories
  26  *
  27  * file to string vector support
  28  */
  29
  30 #include <ast.h>
  31 #include <vecargs.h>
  32
  33 /*
  34  * free a string vector generated by vecload()
  35  *
  36  * retain!=0 frees the string pointers but retains the string data
  37  * in this case the data is permanently allocated
  38  */
  39
  40 void
  41 vecfree(register char** vec, int retain)
  42 {
  43         if (vec)
  44         {
  45                 if (*(vec -= 2) && !retain) free(*vec);
  46                 free(vec);
  47         }
  48 }