/***************************************************************************

 *                                  _   _ ____  _

 *  Project                     ___| | | |  _ \| |

 *                             / __| | | | |_) | |

 *                            | (__| |_| |  _ <| |___

 *                             \___|\___/|_| \_\_____|

 *

 * Copyright (C) Daniel Stenberg, <daniel@haxx.se>, et al.

 *

 * This software is licensed as described in the file COPYING, which

 * you should have received as part of this distribution. The terms

 * are also available at https://curl.se/docs/copyright.html.

 *

 * You may opt to use, copy, modify, merge, publish, distribute and/or sell

 * copies of the Software, and permit persons to whom the Software is

 * furnished to do so, under the terms of the COPYING file.

 *

 * This software is distributed on an "AS IS" basis, WITHOUT WARRANTY OF ANY

 * KIND, either express or implied.

 *

 * SPDX-License-Identifier: curl

 *

 ***************************************************************************/

#include "rename.h"

#include "curl_setup.h"

#if (!defined(CURL_DISABLE_HTTP) || !defined(CURL_DISABLE_COOKIES)) || \

  !defined(CURL_DISABLE_ALTSVC)

#include "curlx/multibyte.h"

#include "curlx/timeval.h"

/* The last 2 #include files should be in this order */

#include "curl_memory.h"

#include "memdebug.h"

/* return 0 on success, 1 on error */

int Curl_rename(const char *oldpath, const char *newpath)

{

#if defined(_WIN32) && !defined(UNDER_CE)

  /* rename() on Windows does not overwrite, so we cannot use it here.

     MoveFileEx() will overwrite and is usually atomic, however it fails

     when there are open handles to the file. */

  const int max_wait_ms = 1000;

  struct curltime start = curlx_now();

  TCHAR *tchar_oldpath = curlx_convert_UTF8_to_tchar(oldpath);

  TCHAR *tchar_newpath = curlx_convert_UTF8_to_tchar(newpath);

  for(;;) {

    timediff_t diff;

    if(MoveFileEx(tchar_oldpath, tchar_newpath, MOVEFILE_REPLACE_EXISTING)) {

      curlx_unicodefree(tchar_oldpath);

      curlx_unicodefree(tchar_newpath);

      break;

    }

    diff = curlx_timediff(curlx_now(), start);

    if(diff < 0 || diff > max_wait_ms) {

      curlx_unicodefree(tchar_oldpath);

      curlx_unicodefree(tchar_newpath);

      return 1;

    }

    Sleep(1);

  }

#else

  if(rename(oldpath, newpath))

    return 1;

#endif

  return 0;

}

#endif