/***********************************************************************/
/*                                                                     */
/*                                OCaml                                */
/*                                                                     */
/*            Xavier Leroy, projet Cristal, INRIA Rocquencourt         */
/*                                                                     */
/*  Copyright 1996 Institut National de Recherche en Informatique et   */
/*  en Automatique.  All rights reserved.  This file is distributed    */
/*  under the terms of the GNU Library General Public License, with    */
/*  the special exception on linking described in file ../../LICENSE.  */
/*                                                                     */
/***********************************************************************/

#include <caml/fail.h>
#include <caml/mlvalues.h>
#include <caml/memory.h>
#include <caml/signals.h>
#include "unixsupport.h"

#if defined(HAS_UTIMES)

#include <sys/types.h>
#include <sys/time.h>

CAMLprim value unix_utimes(value path, value atime, value mtime)
{
  CAMLparam3(path, atime, mtime);
  struct timeval tv[2], * t;
  char * p;
  int ret;
  double at, mt;
  caml_unix_check_path(path, "utimes");
  at = Double_val(atime);
  mt = Double_val(mtime);
  if (at == 0.0 && mt == 0.0) {
    t = (struct timeval *) NULL;
  } else {
    tv[0].tv_sec = at;
    tv[0].tv_usec = (at - tv[0].tv_sec) * 1000000;
    tv[1].tv_sec = mt;
    tv[1].tv_usec = (mt - tv[1].tv_sec) * 1000000;
    t = tv;
  }
  p = caml_strdup(String_val(path));
  caml_enter_blocking_section();
  ret = utimes(p, t);
  caml_leave_blocking_section();
  caml_stat_free(p);
  if (ret == -1) uerror("utimes", path);
  CAMLreturn(Val_unit);
}

#elif defined(HAS_UTIME)

#include <sys/types.h>
#ifndef _WIN32
#include <utime.h>
#else
#include <sys/utime.h>
#endif

CAMLprim value unix_utimes(value path, value atime, value mtime)
{
  CAMLparam3(path, atime, mtime);
  struct utimbuf times, * t;
  char * p;
  int ret;
  double at, mt;
  caml_unix_check_path(path, "utimes");
  at = Double_val(atime);
  mt = Double_val(mtime);
  if (at == 0.0 && mt == 0.0) {
    t = (struct utimbuf *) NULL;
  } else {
    times.actime = at;
    times.modtime = mt;
    t = &times;
  }
  p = caml_strdup(String_val(path));
  caml_enter_blocking_section();
  ret = utime(p, t);
  caml_leave_blocking_section();
  caml_stat_free(p);
  if (ret == -1) uerror("utimes", path);
  CAMLreturn(Val_unit);
}

#else

CAMLprim value unix_utimes(value path, value atime, value mtime)
{ invalid_argument("utimes not implemented"); }

#endif