Method UnpackFile

Plugins/src_VCPP/DisplayXMLFiles/WinMergeScript.cpp:282–340

STDMETHODIMP CWinMergeScript::UnpackFile(BSTR fileSrc, BSTR fileDst, VARIANT_BOOL *pbChanged, INT *pSubcode, VARIANT_BOOL *pbSuccess)
{
	USES_CONVERSION;

	// Open input file for read binary
	FILE *pInput = _wfopen(fileSrc, L"rb");
	// Init data structure used in handlers
	CXMLData oData;
	oData.iDepth = 0;
	oData.bInElement = false;
	oData.bNeedsEnding = false;
	// Get file size
	fseek(pInput, 0L, SEEK_END);
	size_t size = ftell(pInput);
	fseek(pInput, 0L, SEEK_SET);
	// Open output file for write binary
	oData.pOutput = _wfopen(fileDst, L"wb");

	// Set all handlers
	char *buf = new char[size];
	XML_Parser parser = XML_ParserCreate(NULL);
	XML_SetUserData(parser, &oData);
	XML_SetElementHandler(parser, StartElementHandler, EndElementHandler);
	XML_SetDefaultHandler(parser, DefaultHandler);
	XML_SetProcessingInstructionHandler(parser, ProcessingInstructionHandler);
	XML_SetCommentHandler(parser, CommentHandler);
	XML_SetXmlDeclHandler(parser, XmlDeclHandler);
	XML_SetUnknownEncodingHandler(parser, WinMerge_Plug_UnknownEncodingHandler, this);
	size_t len = fread(buf, 1, size, pInput);
	// Parse
	if (XML_Parse(parser, buf, static_cast<int>(len), true) == XML_STATUS_ERROR)
	{
		// There was an error
		// Give a warning and return without converting anything
		char sError[1024];
		sprintf(sError, "The xml has an error: %s at line %d",
			XML_ErrorString(XML_GetErrorCode(parser)),
			XML_GetCurrentLineNumber(parser));
		
		MergeApp_LogError(m_pMergeApp, sError);
		XML_ParserFree(parser);
		delete [] buf;
		fclose(pInput);
		fclose(oData.pOutput);
		*pbChanged = VARIANT_FALSE;
		*pbSuccess = VARIANT_FALSE;
		return S_FALSE;
	}
	XML_ParserFree(parser);
	delete [] buf;

	// Close all files
	fclose(pInput);
	fclose(oData.pOutput);

	*pbChanged = VARIANT_TRUE;
	*pbSuccess = VARIANT_TRUE;
	return S_OK;