/* Distributed under the OSI-approved BSD 3-Clause License.  See accompanying
   file Copyright.txt or https://cmake.org/licensing#kwsys for details.  */
#include "kwsysPrivate.h"
#include KWSYS_HEADER(Encoding.h)

/* Work-around CMake dependency scanning limitation.  This must
   duplicate the above list of headers.  */
#if 0
#  include "Encoding.h.in"
#endif

#include <stdlib.h>

#ifdef _WIN32
#  include <windows.h>
#endif

size_t kwsysEncoding_mbstowcs(wchar_t* dest, char const* str, size_t n)
{
  if (str == 0) {
    return (size_t)-1;
  }
#ifdef _WIN32
  return MultiByteToWideChar(KWSYS_ENCODING_DEFAULT_CODEPAGE, 0, str, -1, dest,
                             (int)n) -
    1;
#else
  return mbstowcs(dest, str, n);
#endif
}

wchar_t* kwsysEncoding_DupToWide(char const* str)
{
  wchar_t* ret = NULL;
  size_t length = kwsysEncoding_mbstowcs(NULL, str, 0) + 1;
  if (length > 0) {
    ret = (wchar_t*)malloc((length) * sizeof(wchar_t));
    if (ret) {
      ret[0] = 0;
      kwsysEncoding_mbstowcs(ret, str, length);
    }
  }
  return ret;
}

size_t kwsysEncoding_wcstombs(char* dest, wchar_t const* str, size_t n)
{
  if (str == 0) {
    return (size_t)-1;
  }
#ifdef _WIN32
  return WideCharToMultiByte(KWSYS_ENCODING_DEFAULT_CODEPAGE, 0, str, -1, dest,
                             (int)n, NULL, NULL) -
    1;
#else
  return wcstombs(dest, str, n);
#endif
}

char* kwsysEncoding_DupToNarrow(wchar_t const* str)
{
  char* ret = NULL;
  size_t length = kwsysEncoding_wcstombs(NULL, str, 0) + 1;
  if (length > 0) {
    ret = (char*)malloc(length);
    if (ret) {
      ret[0] = 0;
      kwsysEncoding_wcstombs(ret, str, length);
    }
  }
  return ret;
}
