SQLRETURN InstallExternalLibrary()

in language-extensions/python/src/PythonExtension.cpp [610:690]
63 lines of code
6 McCabe index (conditional complexity)

SQLRETURN InstallExternalLibrary(
	SQLGUID    setupSessionId,
	SQLCHAR    *libraryName,
	SQLINTEGER libraryNameLength,
	SQLCHAR    *libraryFile,
	SQLINTEGER libraryFileLength,
	SQLCHAR    *libraryInstallDirectory,
	SQLINTEGER libraryInstallDirectoryLength,
	SQLCHAR    **libraryError,
	SQLINTEGER *libraryErrorLength)
{
	LOG("InstallExternalLibrary");
	SQLRETURN result = SQL_ERROR;

	string errorString;

	string installDir = string(reinterpret_cast<char *>(libraryInstallDirectory), 
		libraryInstallDirectoryLength);
	installDir = PythonExtensionUtils::NormalizePathString(installDir);

	string tempFolder = PythonExtensionUtils::NormalizePathString(
		fs::path(installDir).append("tmp").string());

	try
	{
		PythonLibrarySession librarySession = PythonLibrarySession();

		librarySession.Init(&setupSessionId);

		result = librarySession.InstallLibrary(
			tempFolder,
			libraryName,
			libraryNameLength,
			libraryFile,
			libraryFileLength,
			libraryInstallDirectory,
			libraryInstallDirectoryLength);
	}
	catch (const exception & ex)
	{
		result = SQL_ERROR;

		errorString = string(ex.what());
		LOG_ERROR(errorString);
	}
	catch (const bp::error_already_set &)
	{
		result = SQL_ERROR;

		errorString = PythonExtensionUtils::ParsePythonException();

		LOG_ERROR("Python error: " + errorString);
	}
	catch (...)
	{
		result = SQL_ERROR;

		errorString = "Unexpected exception occurred in function InstallExternalLibrary()";

		LOG_ERROR(errorString);
	}

	// Clean up the temp installation folder
	//
	if (fs::exists(tempFolder))
	{
		fs::remove_all(tempFolder);
	}

	if (!errorString.empty())
	{
		*libraryErrorLength = errorString.length();

		string *pError = new string(errorString);
		SQLCHAR *error = const_cast<SQLCHAR*>(reinterpret_cast<const SQLCHAR *>(pError->c_str()));

		*libraryError = error;
	}

	return result;
}