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// Common/StringConvert.cpp

#include "StdAfx.h"
#include <stdlib.h>

#include "StringConvert.h"
extern "C"
{
int global_use_utf16_conversion = 0;
}

namespace utf8
{
#include "UTFConvert.cpp"
}


#ifdef LOCALE_IS_UTF8

UString MultiByteToUnicodeString(const AString &srcString, UINT /*codePage*/)
{
  if ((global_use_utf16_conversion) && (!srcString.IsEmpty()))
  {
    UString resultString;
    bool bret = utf8::ConvertUTF8ToUnicode(srcString,resultString);
    if (bret) return resultString;
  }

  UString resultString;
  for (int i = 0; i < srcString.Length(); i++)
    resultString += wchar_t(srcString[i] & 255);

  return resultString;
}

AString UnicodeStringToMultiByte(const UString &srcString, UINT /*codePage*/)
{
  if ((global_use_utf16_conversion) && (!srcString.IsEmpty()))
  {
    AString resultString;
    bool bret = utf8::ConvertUnicodeToUTF8(srcString,resultString);
    if (bret) return resultString;
  }

  AString resultString;
  for (int i = 0; i < srcString.Length(); i++)
  {
    if (srcString[i] >= 256) resultString += '?';
    else                     resultString += char(srcString[i]);
  }
  return resultString;
}

#else /* LOCALE_IS_UTF8 */

UString MultiByteToUnicodeString(const AString &srcString, UINT /*codePage*/)
{
#ifdef HAVE_MBSTOWCS
  if ((global_use_utf16_conversion) && (!srcString.IsEmpty()))
  {
    UString resultString;
    int numChars = mbstowcs(resultString.GetBuffer(srcString.Length()),srcString,srcString.Length()+1);
    if (numChars >= 0) {
      resultString.ReleaseBuffer(numChars);
      return resultString;
    }
  }
#endif

  UString resultString;
  for (int i = 0; i < srcString.Length(); i++)
    resultString += wchar_t(srcString[i] & 255);

  return resultString;
}

AString UnicodeStringToMultiByte(const UString &srcString, UINT /*codePage*/)
{
#ifdef HAVE_WCSTOMBS
  if ((global_use_utf16_conversion) && (!srcString.IsEmpty()))
  {
    AString resultString;
    int numRequiredBytes = srcString.Length() * 6+1;
    int numChars = wcstombs(resultString.GetBuffer(numRequiredBytes),srcString,numRequiredBytes);
    if (numChars >= 0) {
      resultString.ReleaseBuffer(numChars);
      return resultString;
    }
  }
#endif

  AString resultString;
  for (int i = 0; i < srcString.Length(); i++)
  {
    if (srcString[i] >= 256) resultString += '?';
    else                     resultString += char(srcString[i]);
  }
  return resultString;
}

#endif /* LOCALE_IS_UTF8 */

#include "UTFConvert.cpp"