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

void TrimString(std::string& str)
{
	std::string str1;
	bool add1 = false;
	std::string::const_iterator iter1;
	for (iter1 = str.begin(); iter1 != str.end(); ++iter1)
	{
		int c = (HGByte)(*iter1);
		if (!add1)
		{
			if (!isspace(c))
			{
				str1.push_back(c);
				add1 = true;
			}
		}
		else
		{
			str1.push_back(c);
		}
	}

	if (str1.empty())
	{
		str.clear();
		return;
	}

	std::string str2;
	bool add2 = false;
	std::string::const_reverse_iterator iter2;
	for (iter2 = str1.rbegin(); iter2 != str1.rend(); ++iter2)
	{
		int c = (HGByte)(*iter2);
		if (!add2)
		{
			if (!isspace(c))
			{
				str2.push_back(c);
				add2 = true;
			}
		}
		else
		{
			str2.push_back(c);
		}
	}

	if (str2.empty())
	{
		str.clear();
		return;
	}

	str = std::string(str2.rbegin(), str2.rend());
}

#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 char* utf8)
{
#if defined(HG_CMP_MSC)
	return Utf8ToAnsi(utf8);
#else
	return utf8;
#endif
}

std::string StdStringToUtf8(const char* str)
{
#if defined(HG_CMP_MSC)
	return AnsiToUtf8(str);
#else
	return str;
#endif
}