Use empty check consistent with other parts.

[wxWidgets.git] / src / iodbc / itrace.c

/*
 *  itrace.c
 *
 *  $Id$
 *
 *  Trace functions
 *
 *  The iODBC driver manager.
 *  
 *  Copyright (C) 1995 by Ke Jin <kejin@empress.com> 
 *
 *  This library is free software; you can redistribute it and/or
 *  modify it under the terms of the GNU Library General Public
 *  License as published by the Free Software Foundation; either
 *  version 2 of the License, or (at your option) any later version.
 *
 *  This library 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
 *  Library General Public License for more details.
 *
 *  You should have received a copy of the GNU Library General Public
 *  License along with this library; if not, write to the Free
 *  Software Foundation, Inc., 675 Mass Ave, Cambridge, MA 02139, USA.
 */

#include	"config.h"

#include	"isql.h"
#include	"isqlext.h"

#include        "dlproc.h"

#include	"itrace.h"

#include	"herr.h"
#include	"henv.h"
#include	"henv.ci"

#include	<stdio.h>

static int 
printreturn (void FAR * istm, int ret)
{
  FILE FAR *stm = (FILE FAR *) istm;
  char FAR *ptr = "Invalid return value";

  switch (ret)
     {
     case SQL_SUCCESS:
       ptr = "SQL_SUCCESS";
       break;

     case SQL_SUCCESS_WITH_INFO:
       ptr = "SQL_SUCCESS_WITH_INFO";
       break;

     case SQL_NO_DATA_FOUND:
       ptr = "SQL_NO_DATA_FOUND";
       break;

     case SQL_NEED_DATA:
       ptr = "SQL_NEED_DATA";
       break;

     case SQL_INVALID_HANDLE:
       ptr = "SQL_INVALID_HANDLE";
       break;

     case SQL_ERROR:
       ptr = "SQL_ERROR";
       break;

     case SQL_STILL_EXECUTING:
       ptr = "SQL_STILL_EXECUTING";
       break;

     default:
       break;
     }

  fprintf (stm, "%s\n", ptr);
  fflush (stm);

  return 0;
}


HPROC 
_iodbcdm_gettrproc (void FAR * istm, int procid, int type)
{
  FILE FAR *stm = (FILE FAR *) istm;

  if (type == TRACE_TYPE_DM2DRV)
    {
      int i, j = 0;

      for (i = 0; j != en_NullProc; i++)
	{
	  j = odbcapi_symtab[i].en_idx;

	  if (j == procid)
	    {
	      fprintf (stm, "\n%s ( ... )\n", odbcapi_symtab[i].symbol);

	      fflush (stm);
	    }
	}
    }

  if (type == TRACE_TYPE_RETURN)
    {
      return (HPROC) printreturn;
    }

  return SQL_NULL_HPROC;
}