#include "wobject/xbase.hpp"
#include "wobject/xstring.hpp"
#include "win32/xfile.hpp"
#include <vector>

xstring xfile::GetString(xstring path)
{
	int nLen = 0;
	const wchar_t* file = path.c_str(false);
	if (file[0] == 'f' && file[1] == 'i' && file[2] == 'l' && file[3] == 'e' && file[4] == ':' && file[5] == '/' && file[6] == '/')
		file += 7;
	BYTE* lpBuffer = xfile::GetBuffer(file, nLen);
	if (!lpBuffer)return L"";
	void* p = lpBuffer;
	if (nLen > 2)
	{
		if ((lpBuffer[0] == 0xff && lpBuffer[1] == 0xfe) || (lpBuffer[0] == 0xfe && lpBuffer[1] == 0xff))lpBuffer = lpBuffer + 2;
	}
	xstring str = (wchar_t*)lpBuffer;
	if (p)delete p;
	return str;
}

BYTE* xfile::GetBuffer(xstring path, int& Length)
{
	TCHAR buf[255];
	TCHAR* pToken = NULL;
	int len = 0;

	DWORD dwFileSize = 0;
	DWORD dwReadSize = 0;

	DWORD GENERIC_READ = (0x80000000L);
	DWORD  GENERIC_WRITE = (0x40000000L);
	DWORD GENERIC_EXECUTE = (0x20000000L);
	DWORD GENERIC_ALL = (0x10000000L);

	DWORD FILE_SHARE_READ = 0x00000001;
	DWORD FILE_SHARE_WRITE = 0x00000002;
	DWORD FILE_SHARE_DELETE = 0x00000004;
	DWORD FILE_ATTRIBUTE_NORMAL  =0x00000080;
	DWORD OPEN_ALWAYS = 4;
	DWORD OPEN_EXISTING = 3;

	HANDLE INVALID_HANDLE_VALUE = ((HANDLE)(LONG_PTR)-1);

	try {
		HANDLE hFile = xfile::CreateFile(path.c_str(false), GENERIC_READ, FILE_SHARE_READ | FILE_SHARE_WRITE, NULL, OPEN_EXISTING, FILE_ATTRIBUTE_NORMAL, NULL);
		if (hFile != INVALID_HANDLE_VALUE)
		{
			dwFileSize = ::GetFileSize(hFile, NULL);
			BYTE* lpBuffer = new BYTE[dwFileSize+2];
			lpBuffer[dwFileSize] = 0;
			lpBuffer[dwFileSize+1] = 0;
			ReadFile(hFile, lpBuffer, dwFileSize, &dwReadSize, NULL);
			Length = dwReadSize;
			if (hFile != INVALID_HANDLE_VALUE)CloseHandle(hFile);
			return lpBuffer;
		}
	}
	catch (...)
	{

	}
	return 	nullptr;
}