src/iodbc/henv.c

   1 /*
   2  *  henv.c
   3  *
   4  *  $Id$
   5  *
   6  *  Environment object management functions
   7  *
   8  *  The iODBC driver manager.
   9  *
  10  *  Copyright (C) 1995 by Ke Jin <kejin@empress.com>
  11  *
  12  *  This library is free software; you can redistribute it and/or
  13  *  modify it under the terms of the GNU Library General Public
  14  *  License as published by the Free Software Foundation; either
  15  *  version 2 of the License, or (at your option) any later version.
  16  *
  17  *  This library is distributed in the hope that it will be useful,
  18  *  but WITHOUT ANY WARRANTY; without even the implied warranty of
  19  *  MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the GNU
  20  *  Library General Public License for more details.
  21  *
  22  *  You should have received a copy of the GNU Library General Public
  23  *  License along with this library; if not, write to the Free
  24  *  Software Foundation, Inc., 675 Mass Ave, Cambridge, MA 02139, USA.
  25  */
  26
  27 #include        "config.h"
  28
  29 #include        "isql.h"
  30 #include        "isqlext.h"
  31
  32 #include        "dlproc.h"
  33
  34 #include        "herr.h"
  35 #include        "henv.h"
  36
  37 #include        "itrace.h"
  38
  39 RETCODE SQL_API
  40 SQLAllocEnv (HENV FAR * phenv)
  41 {
  42   GENV_t FAR *genv;
  43
  44   genv = (GENV_t *) MEM_ALLOC (sizeof (GENV_t));
  45
  46   if (genv == NULL)
  47     {
  48       *phenv = SQL_NULL_HENV;
  49
  50       return SQL_ERROR;
  51     }
  52
  53 #if (ODBCVER >= 0x0300 )
  54   genv->type = SQL_HANDLE_ENV;
  55 #endif
  56
  57   genv->henv = SQL_NULL_HENV;   /* driver's env list */
  58   genv->hdbc = SQL_NULL_HDBC;   /* driver's dbc list */
  59   genv->herr = SQL_NULL_HERR;   /* err list          */
  60
  61   *phenv = (HENV) genv;
  62
  63   return SQL_SUCCESS;
  64 }
  65
  66
  67 RETCODE SQL_API
  68 SQLFreeEnv (HENV henv)
  69 {
  70   GENV_t FAR *genv = (GENV_t *) henv;
  71
  72   if (henv == SQL_NULL_HENV)
  73     {
  74       return SQL_INVALID_HANDLE;
  75     }
  76
  77   if (genv->hdbc != SQL_NULL_HDBC)
  78     {
  79       PUSHSQLERR (genv->herr, en_S1010);
  80
  81       return SQL_ERROR;
  82     }
  83
  84   _iodbcdm_freesqlerrlist (genv->herr);
  85
  86   MEM_FREE (henv);
  87
  88   return SQL_SUCCESS;
  89 }