#include "HGString.h"
#include "base/HGDef.h"
#include "base/HGInc.h"
#include <algorithm>

#if defined(HG_CMP_MSC)
static std::string AnsiToUtf8(const char* text)
{
	int wlen = ::MultiByteToWideChar(CP_ACP, 0, text, -1, NULL, 0);
	WCHAR* pUnicode = new WCHAR[wlen];
	::MultiByteToWideChar(CP_ACP, 0, text, -1, pUnicode, wlen);
	int len = ::WideCharToMultiByte(CP_UTF8, 0, pUnicode, -1, NULL, 0, NULL, NULL);
	CHAR* pUTF8 = new CHAR[len];
	::WideCharToMultiByte(CP_UTF8, 0, pUnicode, -1, pUTF8, len, NULL, NULL);
	delete[] pUnicode;
	std::string ret = pUTF8;
	delete[] pUTF8;
	return ret;
}
static std::string Utf8ToAnsi(const char* text)
{
	int wlen = ::MultiByteToWideChar(CP_UTF8, 0, text, -1, NULL, 0);
	WCHAR* pUnicode = new WCHAR[wlen];
	::MultiByteToWideChar(CP_UTF8, 0, text, -1, pUnicode, wlen);
	int len = ::WideCharToMultiByte(CP_ACP, 0, pUnicode, -1, NULL, 0, NULL, NULL);
	CHAR* pAnsi = new CHAR[len];
	::WideCharToMultiByte(CP_ACP, 0, pUnicode, -1, pAnsi, len, NULL, NULL);
	delete[] pUnicode;
	std::string ret = pAnsi;
	delete[] pAnsi;
	return ret;
}
#endif

std::string Utf8ToStdString(const std::string& utf8Str)
{
#if defined(HG_CMP_MSC)
	return Utf8ToAnsi(utf8Str.c_str());
#else
	return utf8Str;
#endif
}

std::string StdStringToUtf8(const std::string& stdStr)
{
#if defined(HG_CMP_MSC)
	return AnsiToUtf8(stdStr.c_str());
#else
	return stdStr;
#endif
}