/*
 * This program is free software; you can redistribute it and/or
 * modify it under the terms of the GNU General Public License
 * as published by the Free Software Foundation; either version 2
 * of the License, or (at your option) any later version.
 *
 * This program 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 General Public License for more details.
 *
 * You should have received a copy of the GNU General Public License
 * along with this program; if not, write to the Free Software Foundation,
 * Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301, USA.
 *
 * The Original Code is Copyright (C) 2012 Blender Foundation.
 * All rights reserved.
 */

#ifndef _WIN32_IE
#  define _WIN32_IE 0x0501
#endif

#include "utf_winfunc.h"
#include "utfconv.h"
#include <io.h>
#include <wchar.h>
#include <windows.h>

FILE *ufopen(const char *filename, const char *mode)
{
  FILE *f = NULL;
  UTF16_ENCODE(filename);
  UTF16_ENCODE(mode);

  if (filename_16 && mode_16) {
    f = _wfopen(filename_16, mode_16);
  }

  UTF16_UN_ENCODE(mode);
  UTF16_UN_ENCODE(filename);

  if (!f) {
    if ((f = fopen(filename, mode))) {
      printf("WARNING: %s is not utf path. Please update it.\n", filename);
    }
  }

  return f;
}

int uopen(const char *filename, int oflag, int pmode)
{
  int f = -1;
  UTF16_ENCODE(filename);

  if (filename_16) {
    f = _wopen(filename_16, oflag, pmode);
  }

  UTF16_UN_ENCODE(filename);

  if (f == -1) {
    if ((f = open(filename, oflag, pmode)) != -1) {
      printf("WARNING: %s is not utf path. Please update it.\n", filename);
    }
  }

  return f;
}

int uaccess(const char *filename, int mode)
{
  int r = -1;
  UTF16_ENCODE(filename);

  if (filename_16) {
    r = _waccess(filename_16, mode);
  }

  UTF16_UN_ENCODE(filename);

  return r;
}

int urename(const char *oldname, const char *newname)
{
  int r = -1;
  UTF16_ENCODE(oldname);
  UTF16_ENCODE(newname);

  if (oldname_16 && newname_16) {
    r = _wrename(oldname_16, newname_16);
  }

  UTF16_UN_ENCODE(newname);
  UTF16_UN_ENCODE(oldname);
  return r;
}

int umkdir(const char *pathname)
{

  BOOL r = 0;
  UTF16_ENCODE(pathname);

  if (pathname_16) {
    r = CreateDirectoryW(pathname_16, NULL);
  }

  UTF16_UN_ENCODE(pathname);

  return r ? 0 : -1;
}

char *u_alloc_getenv(const char *varname)
{
  char *r = 0;
  wchar_t *str;
  UTF16_ENCODE(varname);
  if (varname_16) {
    str = _wgetenv(varname_16);
    r = alloc_utf_8_from_16(str, 0);
  }
  UTF16_UN_ENCODE(varname);

  return r;
}
void u_free_getenv(char *val)
{
  free(val);
}

int uput_getenv(const char *varname, char *value, size_t buffsize)
{
  int r = 0;
  wchar_t *str;

  if (!buffsize) {
    return r;
  }

  UTF16_ENCODE(varname);
  if (varname_16) {
    str = _wgetenv(varname_16);
    conv_utf_16_to_8(str, value, buffsize);
    r = 1;
  }
  UTF16_UN_ENCODE(varname);

  if (!r) {
    value[0] = 0;
  }

  return r;
}

int uputenv(const char *name, const char *value)
{
  int r = -1;
  UTF16_ENCODE(name);

  if (value) {
    /* set */
    UTF16_ENCODE(value);

    if (name_16 && value_16) {
      r = (SetEnvironmentVariableW(name_16, value_16) != 0) ? 0 : -1;
    }
    UTF16_UN_ENCODE(value);
  }
  else {
    /* clear */
    if (name_16) {
      r = (SetEnvironmentVariableW(name_16, NULL) != 0) ? 0 : -1;
    }
  }

  UTF16_UN_ENCODE(name);

  return r;
}