Method LoadFile

Src/MergeDoc.cpp:2045–2088

* @brief Loads file to buffer and shows load-errors * @param [in] sFileName File to open * @param [in] nBuffer Index (0-based) of buffer to load * @param [out] readOnly whether file is read-only * @param [in] encoding encoding used * @return Tells if files were loaded successfully * @sa CMergeDoc::OpenDocs() **/

 * @sa CMergeDoc::OpenDocs()
 **/
int CMergeDoc::LoadFile(const String& sFileName, int nBuffer, bool & readOnly, const FileTextEncoding & encoding)
{
	String sError;
	FileLoadResult::flags_t retVal = FileLoadResult::FRESULT_ERROR;

	CDiffTextBuffer *pBuf = m_ptBuf[nBuffer].get();
	m_filePaths[nBuffer] = sFileName;

	CRLFSTYLE nCrlfStyle = CRLFSTYLE::AUTOMATIC;
	String sOpenError;
	retVal = pBuf->LoadFromFile(sFileName.c_str(), m_infoUnpacker,
		m_strBothFilenames.c_str(), readOnly, nCrlfStyle, encoding, sOpenError);

	// if CMergeDoc::CDiffTextBuffer::LoadFromFile failed,
	// it left the pBuf in a valid (but empty) state via a call to InitNew

	if (FileLoadResult::IsOkImpure(retVal))
	{
		// File loaded, and multiple EOL types in this file
		FileLoadResult::SetMainOk(retVal);

		// If mixed EOLs are not enabled, enable them for this doc.
		if (!GetOptionsMgr()->GetBool(OPT_ALLOW_MIXED_EOL))
		{
			pBuf->SetMixedEOL(true);
		}
	}

	if (FileLoadResult::IsError(retVal))
	{
		// Error from Unifile/system
		if (!sOpenError.empty())
			sError = strutils::format_string2(_("Cannot open file\n%1\n\n%2"), sFileName, sOpenError);
		else
			sError = strutils::format_string1(_("File not found: %1"), sFileName);
		ShowMessageBox(sError, MB_OK | MB_ICONSTOP | MB_MODELESS);
	}
	else if (FileLoadResult::IsErrorUnpack(retVal))
	{
		sError = strutils::format_string1(_("File not unpacked: %1"), sFileName);
		ShowMessageBox(sError, MB_OK | MB_ICONSTOP | MB_MODELESS);
	}
	return retVal;
}

/**
 * @brief Check if specified codepage number is valid for WinMerge Editor.