text: /*
   * $Id: wce_rewind.c,v 1.2 2006/04/09 16:48:18 mloskot Exp $
   *
   * Defines rewind() function.
   *
   * Created by Mateusz Loskot (mateusz@loskot.net)
   *
   * Copyright (c) 2006 Taxus SI Ltd.
   *
   * Permission is hereby granted, free of charge, to any person obtaining
   * a copy of this software and associated documentation files (the "Software"),
   * to deal in the Software without restriction, including without limitation 
   * the rights to use, copy, modify, merge, publish, distribute, sublicense,
   * and/or sell copies of the Software, and to permit persons to whom 
   * the Software is furnished to do so, subject to the following conditions:
   * 
   * The above copyright notice and this permission notice shall be included
   * in all copies or substantial portions of the Software.
   *
   * THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND,
   * EXPRESS OR IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF
   * MERCHANTABILITY, FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT.
   * IN NO EVENT SHALL THE AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY
   * CLAIM, DAMAGES OR OTHER LIABILITY, WHETHER IN AN ACTION OF CONTRACT,
   * TORT OR OTHERWISE, ARISING FROM, OUT OF OR IN CONNECTION WITH
   * THE SOFTWARE OR THE USE OR OTHER DEALINGS IN THE SOFTWARE.
   *
   * MIT License:
   * http://opensource.org/licenses/mit-license.php
   *
   * Contact:
   * Taxus SI Ltd.
   * http://www.taxussi.com.pl
   *
   */
  
  #include <windows.h>
  #include <assert.h>
  
  /*******************************************************************************
  * wceex_rewind - Reset the file position indicator in a stream
  *
  * Description:
  *
  *   The call rewind(stream) shall be equivalent to:
  *   (void) fseek(stream, 0L, SEEK_SET)
  *
  *   Internally, rewind() function uses SetFilePointer call from 
  *   Windows CE API.
  *
  *   Windows CE specific:
  *   On Windows CE HANDLE type is defined as typedef void *HANDLE
  *   and FILE type is declared as typedef void FILE.
  *
  * Return:
  *
  *   No return value.
  *       
  * Reference:
  *
  *   IEEE 1003.1, 2004 Edition
  *
  *******************************************************************************/
  void wceex_rewind(FILE * fp)
  {
      int ret;
  
      /* TODO - mloskot: WARNING!
       * fseek() does not clear error and end-of-file indicators for the stream
       * So, that's why dirty asserts are used to get informed about potential problems.
       */
      ret = fseek(fp, 0L, SEEK_SET);
      
      assert(0 == ret);
      assert(0 == ferror(fp));
      assert(!feof(fp));
  
      /*
  
      // XXX - mloskot:
      // FILE* to HANDLE conversion needs hacks like _get_osfhandle()
      // which are not available on Windows CE.
      // Simple cast does not work.
      //
      // TODO: Does anyone know how to convert FILE* to HANDLE?
  
      DWORD dwError;
      HANDLE hFile;
  
      hFile = (void*)fp;
  
      if (0xFFFFFFFF == SetFilePointer(hFile, 0, NULL, FILE_BEGIN))
      {
      	dwError = GetLastError();
          assert(NO_ERROR == dwError);
      }
  
      */
  }
  
  