/***************************************************************************  
 * Copyright (C) 1995-2002 MySQL AB, www.mysql.com                         *
 *                                                                         *
 * This program 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.                                     *
 *                                                                         *
 * This program 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 Foundation  *
 * Inc., 59 Temple Place, Suite 330, Boston, MA  02111-1307  USA           *
****************************************************************************/

/*************************************************************************** 
 * DLL.C                                                                   *
 *                                                                         *
 *  @description: For LIBMAIN processing                                   *
 *                                                                         *
 *  @author     : MySQL AB(monty@mysql.com, venu@mysql.com)                *
 *  @date       : 2001-Aug-15                                              *
 *  @product    : myodbc3                                                  *
 *                                                                         *
****************************************************************************/

#include "myodbc3.h"
#include <locale.h>

char *default_locale, *decimal_point, *thousands_sep;
uint decimal_point_length,thousands_sep_length;
static bool myodbc_inited=0;

/*
  @type    : myodbc3 internal
  @purpose : initializations
*/

void myodbc_init(void)
{
  if (myodbc_inited)
    return;
  myodbc_inited=1;
  my_init();
  {
    struct lconv *tmp;
    DBUG_ENTER("myodbc_init");
#ifdef LOG_ALL
#ifdef _UNIX_
    DBUG_PUSH("d:t:S:O,/tmp/myodbc.log");
#else
    DBUG_PUSH("d:t:S:O,c::\\tmp\\myodbc.log");
#endif
#else
    if (getenv("MYODBC_LOG") != NULL)
      DBUG_PUSH(getenv("MYODBC_LOG"));
#endif
    init_getfunctions();
    default_locale=my_strdup(setlocale(LC_NUMERIC,NullS),MYF(0));
    setlocale(LC_NUMERIC,"");
    tmp=localeconv();
    decimal_point=my_strdup(tmp->decimal_point,MYF(0));
    decimal_point_length=strlen(decimal_point);
    thousands_sep=my_strdup(tmp->thousands_sep,MYF(0));
    thousands_sep_length=strlen(thousands_sep);
    setlocale(LC_NUMERIC,default_locale);
    DBUG_VOID_RETURN;
  }
}

/*
  @type    : myodbc3 internal
  @purpose : clean all resources while unloading..
*/

void myodbc_end()
{
 if (myodbc_inited)
 {
   myodbc_inited=0;
   my_free(decimal_point,MYF(0));
   my_free(default_locale,MYF(0));
   my_free(thousands_sep,MYF(0));
#ifdef NOT_YET_USED
   mysql_server_end();
#endif
   my_end(0);
 }
}

/*
  @type    : myodbc3 internal
  @purpose : main entry point
*/

#ifdef _WIN32
static int inited=0,threads=0;
HINSTANCE NEAR s_hModule; /* Saved module handle */
int APIENTRY LibMain(HANDLE hInst,DWORD ul_reason_being_called,
	 LPVOID lpReserved)
{
  switch (ul_reason_being_called) {
  case DLL_PROCESS_ATTACH:  /* case of libentry call in win 3.x */
  if (!inited++)
  {
    s_hModule=hInst;
    myodbc_init();
  }
  break;
  case DLL_THREAD_ATTACH:
    threads++;
#ifdef THREAD
    my_thread_init();
#endif
    break;
  case DLL_PROCESS_DETACH:  /* case of wep call in win 3.x */
     if (!--inited)
     {
       myodbc_end();
     }
    break;
  case DLL_THREAD_DETACH:
#ifdef THREAD
    if (threads && --threads)
      my_thread_end();	  /* Last will be freed in my_end() */
#else
    --threads;
#endif
    break;
  default:
    break;
  } /* switch */

  return TRUE;

  UNREFERENCED_PARAMETER(lpReserved);
} /* LibMain */

/*
  @type    : myodbc3 internal
  @purpose : entry point for the DLL
*/

int __stdcall DllMain(HANDLE hInst,DWORD ul_reason_being_called,
		      LPVOID lpReserved)
{
  return LibMain(hInst,ul_reason_being_called,lpReserved);
}

#elif defined(__WIN__)

/***************************************************************************
  This routine is called by LIBSTART.ASM at module load time.  All it
  does in this sample is remember the DLL module handle.  The module
  handle is needed if you want to do things like load stuff from the
  resource file (for instance string resources).
***************************************************************************/

int _export FAR PASCAL libmain(HANDLE hModule,short cbHeapSize,
	     SQLCHAR FAR *lszCmdLine)
{
  s_hModule = hModule;
  myodbc_init();
  return TRUE;
}

#endif /* __WIN__ */

#ifdef _WIN32
void __declspec( dllexport) FAR PASCAL LoadByOrdinal(void);
/* Entry point to cause DM to load using ordinals */
void __declspec( dllexport) FAR PASCAL LoadByOrdinal(void)
{}
#endif