//	この行は文字化け対策用です．消さないでください

#include "StdAfx.h"
#include "CUnicode.h"
#include "codechecker.h"
#include "mem/CMemory.h"
#include "CEol.h"

EConvertResult CUnicode::_UnicodeToUnicode_in( const CMemory& cSrc, CNativeW* pDstMem, const bool bBigEndian )
{
	// ソース取得
	int nSrcLen;
	const unsigned char* pSrc = reinterpret_cast<const unsigned char*>( cSrc.GetRawPtr(&nSrcLen) );
	CMemory* pDstMem2 = pDstMem->_GetMemory();

	EConvertResult res = RESULT_COMPLETE;
	bool bCopy = false;
	if( nSrcLen % 2 == 1 ){
		// 不足分の最終1バイトとして 0x00 を補う。
		pDstMem2->AllocBuffer( nSrcLen + 1 );
		unsigned char* pDst  = reinterpret_cast<unsigned char*>( pDstMem2->GetRawPtr() );
		if( pDstMem2->GetRawPtr() != NULL ){
			if( &cSrc != pDstMem2 ){
				pDstMem2->SetRawDataHoldBuffer(pSrc, nSrcLen);
				bCopy = true;
			}
			pDst[nSrcLen] = 0;
			pDstMem2->_SetRawLength(nSrcLen + 1);
			res = RESULT_LOSESOME;
		}else{
			return RESULT_FAILURE;
		}
	}

	if( bBigEndian ){
		if( &cSrc != pDstMem2 && !bCopy ){
			// コピーしつつ UnicodeBe -> Unicode
			pDstMem2->SwabHLByte(cSrc);
		}else{
			pDstMem2->SwapHLByte();  // UnicodeBe -> Unicode
		}
	}else if( !bCopy ){
		pDstMem2->SetRawDataHoldBuffer(pSrc, nSrcLen);
	}
	return res;
}


EConvertResult CUnicode::_UnicodeToUnicode_out( const CNativeW& cSrc, CMemory* pDstMem, const bool bBigEndian )
{
	if( bBigEndian == true ){
		if( cSrc._GetMemory() == pDstMem ){
			pDstMem->SwapHLByte();   // Unicode -> UnicodeBe
		}else{
			pDstMem->SwabHLByte(*(cSrc._GetMemory()));
		}
	}else{
		if( cSrc._GetMemory() != pDstMem ){
			pDstMem->SetRawDataHoldBuffer(*(cSrc._GetMemory()));
		}else{
			// 何もしない
		}
	}

	return RESULT_COMPLETE;   // 何もしない
}




void CUnicode::GetBom(CMemory* pcmemBom)
{
	static const BYTE UTF16LE_BOM[]={0xFF,0xFE};
	pcmemBom->SetRawData(UTF16LE_BOM, sizeof(UTF16LE_BOM));
}


void CUnicode::GetEol(CMemory* pcmemEol, EEolType eEolType)
{
	static const struct{
		const void* pData;
		int nLen;
	}
	aEolTable[EOL_TYPE_NUM] = {
		{ L"",			0 * sizeof(wchar_t) },	// EOL_NONE
		{ L"\x0d\x0a",	2 * sizeof(wchar_t) },	// EOL_CRLF
		{ L"\x0a",		1 * sizeof(wchar_t) },	// EOL_LF
		{ L"\x0d",		1 * sizeof(wchar_t) },	// EOL_CR
		{ L"\x85",		1 * sizeof(wchar_t) },	// EOL_NEL
		{ L"\u2028",	1 * sizeof(wchar_t) },	// EOL_LS
		{ L"\u2029",	1 * sizeof(wchar_t) },	// EOL_PS
	};
	pcmemEol->SetRawData(aEolTable[eEolType].pData,aEolTable[eEolType].nLen);
}