sqlreadfiledsn.c

来自「一个可以替代windows ODBC驱动程序管理器的通用ODBC数据库引擎」· C语言 代码 · 共 90 行

/*
 *  SQLReadFileDSN.c
 *
 *  $Id: SQLReadFileDSN.c,v 1.1 2001/06/07 00:48:50 source Exp $
 *
 *  These functions intentionally left blank
 *
 *  The iODBC driver manager.
 *
 *  Copyright (C) 2001 by OpenLink Software <[e-mail]>
 *
 *  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 <iodbc.h>
#include <iodbcinst.h>

#include "inifile.h"
#include "iodbc_error.h"
#include "misc.h"

extern int GetPrivateProfileString (LPCSTR lpszSection, LPCSTR lpszEntry,
    LPCSTR lpszDefault, LPSTR lpszRetBuffer, int cbRetBuffer,
    LPCSTR lpszFilename);

BOOL INSTAPI
SQLReadFileDSN (LPCSTR lpszFileName, LPCSTR lpszAppName, LPCSTR lpszKeyName,
    LPSTR lpszString, WORD cbString, WORD *pcbString)
{
  BOOL retcode = FALSE;
  WORD len = 0, i;

  /* Check input parameters */
  CLEAR_ERROR ();

  if (!lpszString || !cbString)
    {
      PUSH_ERROR (ODBC_ERROR_INVALID_BUFF_LEN);
      goto quit;
    }

  if (!lpszAppName && lpszKeyName)
    {
      PUSH_ERROR (ODBC_ERROR_INVALID_REQUEST_TYPE);
      goto quit;
    }

  /* Is a file is specified */
  if (lpszFileName)
    {
      len =
	  GetPrivateProfileString (lpszAppName, lpszKeyName, "", lpszString,
	  cbString, lpszFileName);
      if (numerrors == -1)
	retcode = TRUE;
      goto quit;
    }

  PUSH_ERROR (ODBC_ERROR_INVALID_PATH);
  goto quit;

quit:
  for (i = 0; i < len; i++)
    if (!lpszString[i])
      lpszString[i] = ';';

  if (pcbString)
    *pcbString = len;

  if (len == cbString - 1)
    {
      PUSH_ERROR (ODBC_ERROR_OUTPUT_STRING_TRUNCATED);
      retcode = FALSE;
    }

  return retcode;
}