/* -*- Mode: C++; tab-width: 4; indent-tabs-mode: nil; c-basic-offset: 4 -*- */ /* * This file is part of the LibreOffice project. * * This Source Code Form is subject to the terms of the Mozilla Public * License, v. 2.0. If a copy of the MPL was not distributed with this * file, You can obtain one at http://mozilla.org/MPL/2.0/. * * This file incorporates work covered by the following license notice: * * Licensed to the Apache Software Foundation (ASF) under one or more * contributor license agreements. See the NOTICE file distributed * with this work for additional information regarding copyright * ownership. The ASF licenses this file to you under the Apache * License, Version 2.0 (the "License"); you may not use this file * except in compliance with the License. You may obtain a copy of * the License at http://www.apache.org/licenses/LICENSE-2.0 . */ #ifndef INCLUDED_COMPHELPER_LOGGING_HXX #define INCLUDED_COMPHELPER_LOGGING_HXX #include #include #include #include namespace com::sun::star::uno { template class Reference; } namespace com::sun::star::uno { class XComponentContext; } namespace com::sun::star::logging { class XLogger; } namespace comphelper { //= string conversions, employed by the templatized log* members of //= EventLogger namespace log { namespace convert { inline const OUString& convertLogArgToString( const OUString& _rValue ) { return _rValue; } inline OUString convertLogArgToString( const sal_Char* _pAsciiValue ) { return OUString::createFromAscii( _pAsciiValue ); } inline OUString convertLogArgToString( double _nValue ) { return OUString::number( _nValue ); } inline OUString convertLogArgToString( float _nValue ) { return OUString::number( _nValue ); } inline OUString convertLogArgToString( sal_Int64 _nValue ) { return OUString::number( _nValue ); } inline OUString convertLogArgToString( sal_Int32 _nValue ) { return OUString::number( _nValue ); } inline OUString convertLogArgToString( sal_Int16 _nValue ) { return OUString::number( _nValue ); } inline OUString convertLogArgToString( sal_Unicode _nValue ) { return OUString( _nValue ); } inline OUString convertLogArgToString( bool _bValue ) { return OUString::boolean( _bValue ); } void convertLogArgToString(sal_Bool) = delete; } } // namespace log::convert //= EventLogger class EventLogger_Impl; typedef ::boost::optional< OUString > OptionalString; /** encapsulates an css::logging::XLogger The class silences several (unlikely) errors which could potentially happen when working with a logger. Additionally, it provides some convenience methods for logging events. You can use this class as follows
    EventLogger aLogger( xContext, sLoggerName );
    ....
    aLogger.log( LogLevel::SEVERE, sSomeMessage );
    aLogger.logp( LogLevel::CONFIG, "MyClass", "MyMethod", sSomeMessage, SomeParameter1, SomeParameter2, SomeParameter3 );
The log and logp calls support up to 6 parameters, which can be of arbitrary type. For every parameter, there must exist a function convertLogArgToString which takes an argument of the respective type, and returns a string. After a parameter has been converted to a string using the above mentioned convertLogArgToString function, a placeholder $1$ (resp. $2$ resp. $4$ ...) in the message will be replaced with this string, and the resulting message will be logged. */ class COMPHELPER_DLLPUBLIC EventLogger { protected: std::shared_ptr< EventLogger_Impl > m_pImpl; public: /** creates an EventLogger instance working with a css.logging.XLogger instance given by ASCII name. @param _rxContext the component context to create services @param _rLoggerName the ASCII name of the logger to create. */ EventLogger( const css::uno::Reference< css::uno::XComponentContext >& _rxContext, const sal_Char* _pAsciiLoggerName ); public: /// determines whether an event with the given level would be logged bool isLoggable( const sal_Int32 _nLogLevel ) const; //- XLogger::log equivalents/wrappers //- string messages /// logs a given message, without any arguments, or source class/method names void log( const sal_Int32 _nLogLevel, const OUString& rMessage ) const { if ( isLoggable( _nLogLevel ) ) impl_log(_nLogLevel, nullptr, nullptr, rMessage); } const css::uno::Reference getLogger(); /** logs a given message, replacing a placeholder in the message with an argument The function takes, additionally to the log level and the message, an arbitrary argument. This argument is converted to a string using an overloaded function named convertLogArgToString. Then, a placeholder "$1$" is searched in the message string, and replaced with the argument string. */ template< typename ARGTYPE1 > void log( const sal_Int32 _nLogLevel, const OUString& _rMessage, ARGTYPE1 _argument1 ) const { if ( isLoggable( _nLogLevel ) ) impl_log( _nLogLevel, nullptr, nullptr, _rMessage, OptionalString( log::convert::convertLogArgToString( _argument1 ) ) ); } /// logs a given message, replacing 2 placeholders in the message with respective values template< typename ARGTYPE1, typename ARGTYPE2 > void log( const sal_Int32 _nLogLevel, const OUString& _rMessage, ARGTYPE1 _argument1, ARGTYPE2 _argument2 ) const { if ( isLoggable( _nLogLevel ) ) impl_log( _nLogLevel, nullptr, nullptr, _rMessage, OptionalString( log::convert::convertLogArgToString( _argument1 ) ), OptionalString( log::convert::convertLogArgToString( _argument2 ) ) ); } /// logs a given message, replacing 3 placeholders in the message with respective values template< typename ARGTYPE1, typename ARGTYPE2, typename ARGTYPE3 > void log( const sal_Int32 _nLogLevel, const OUString& _rMessage, ARGTYPE1 _argument1, ARGTYPE2 _argument2, ARGTYPE3 _argument3 ) const { if ( isLoggable( _nLogLevel ) ) impl_log( _nLogLevel, nullptr, nullptr, _rMessage, OptionalString( log::convert::convertLogArgToString( _argument1 ) ), OptionalString( log::convert::convertLogArgToString( _argument2 ) ), OptionalString( log::convert::convertLogArgToString( _argument3 ) ) ); } /// logs a given message, replacing 4 placeholders in the message with respective values template< typename ARGTYPE1, typename ARGTYPE2, typename ARGTYPE3, typename ARGTYPE4 > void log( const sal_Int32 _nLogLevel, const OUString& _rMessage, ARGTYPE1 _argument1, ARGTYPE2 _argument2, ARGTYPE3 _argument3, ARGTYPE4 _argument4 ) const { if ( isLoggable( _nLogLevel ) ) impl_log( _nLogLevel, nullptr, nullptr, _rMessage, OptionalString( log::convert::convertLogArgToString( _argument1 ) ), OptionalString( log::convert::convertLogArgToString( _argument2 ) ), OptionalString( log::convert::convertLogArgToString( _argument3 ) ), OptionalString( log::convert::convertLogArgToString( _argument4 ) ) ); } /// logs a given message, replacing 5 placeholders in the message with respective values template< typename ARGTYPE1, typename ARGTYPE2, typename ARGTYPE3, typename ARGTYPE4, typename ARGTYPE5 > void log( const sal_Int32 _nLogLevel, const OUString& _rMessage, ARGTYPE1 _argument1, ARGTYPE2 _argument2, ARGTYPE3 _argument3, ARGTYPE4 _argument4, ARGTYPE5 _argument5 ) const { if ( isLoggable( _nLogLevel ) ) impl_log( _nLogLevel, nullptr, nullptr, _rMessage, OptionalString( log::convert::convertLogArgToString( _argument1 ) ), OptionalString( log::convert::convertLogArgToString( _argument2 ) ), OptionalString( log::convert::convertLogArgToString( _argument3 ) ), OptionalString( log::convert::convertLogArgToString( _argument4 ) ), OptionalString( log::convert::convertLogArgToString( _argument5 ) ) ); } /// logs a given message, replacing 6 placeholders in the message with respective values template< typename ARGTYPE1, typename ARGTYPE2, typename ARGTYPE3, typename ARGTYPE4, typename ARGTYPE5, typename ARGTYPE6 > void log( const sal_Int32 _nLogLevel, const OUString& _rMessage, ARGTYPE1 _argument1, ARGTYPE2 _argument2, ARGTYPE3 _argument3, ARGTYPE4 _argument4, ARGTYPE5 _argument5, ARGTYPE6 _argument6 ) const { if ( isLoggable( _nLogLevel ) ) impl_log( _nLogLevel, nullptr, nullptr, _rMessage, OptionalString( log::convert::convertLogArgToString( _argument1 ) ), OptionalString( log::convert::convertLogArgToString( _argument2 ) ), OptionalString( log::convert::convertLogArgToString( _argument3 ) ), OptionalString( log::convert::convertLogArgToString( _argument4 ) ), OptionalString( log::convert::convertLogArgToString( _argument5 ) ), OptionalString( log::convert::convertLogArgToString( _argument6 ) ) ); } //- XLogger::log equivalents/wrappers //- ASCII messages /** logs a given message, replacing a placeholder in the message with an argument The function takes, additionally to the log level and the message, an arbitrary argument. This argument is converted to a string using an overloaded function named convertLogArgToString. Then, a placeholder "$1$" is searched in the message string, and replaced with the argument string. */ template< typename ARGTYPE1 > void log( const sal_Int32 _nLogLevel, const sal_Char* _pMessage, ARGTYPE1 _argument1 ) const { if ( isLoggable( _nLogLevel ) ) impl_log( _nLogLevel, nullptr, nullptr, OUString::createFromAscii( _pMessage ), OptionalString( log::convert::convertLogArgToString( _argument1 ) ) ); } /// logs a given message, replacing 2 placeholders in the message with respective values template< typename ARGTYPE1, typename ARGTYPE2 > void log( const sal_Int32 _nLogLevel, const sal_Char* _pMessage, ARGTYPE1 _argument1, ARGTYPE2 _argument2 ) const { if ( isLoggable( _nLogLevel ) ) impl_log( _nLogLevel, nullptr, nullptr, OUString::createFromAscii( _pMessage ), OptionalString( log::convert::convertLogArgToString( _argument1 ) ), OptionalString( log::convert::convertLogArgToString( _argument2 ) ) ); } /// logs a given message, replacing 3 placeholders in the message with respective values template< typename ARGTYPE1, typename ARGTYPE2, typename ARGTYPE3 > void log( const sal_Int32 _nLogLevel, const sal_Char* _pMessage, ARGTYPE1 _argument1, ARGTYPE2 _argument2, ARGTYPE3 _argument3 ) const { if ( isLoggable( _nLogLevel ) ) impl_log( _nLogLevel, nullptr, nullptr, OUString::createFromAscii( _pMessage ), OptionalString( log::convert::convertLogArgToString( _argument1 ) ), OptionalString( log::convert::convertLogArgToString( _argument2 ) ), OptionalString( log::convert::convertLogArgToString( _argument3 ) ) ); } /// logs a given message, replacing 4 placeholders in the message with respective values template< typename ARGTYPE1, typename ARGTYPE2, typename ARGTYPE3, typename ARGTYPE4 > void log( const sal_Int32 _nLogLevel, const sal_Char* _pMessage, ARGTYPE1 _argument1, ARGTYPE2 _argument2, ARGTYPE3 _argument3, ARGTYPE4 _argument4 ) const { if ( isLoggable( _nLogLevel ) ) impl_log( _nLogLevel, nullptr, nullptr, OUString::createFromAscii( _pMessage ), OptionalString( log::convert::convertLogArgToString( _argument1 ) ), OptionalString( log::convert::convertLogArgToString( _argument2 ) ), OptionalString( log::convert::convertLogArgToString( _argument3 ) ), OptionalString( log::convert::convertLogArgToString( _argument4 ) ) ); } /// logs a given message, replacing 5 placeholders in the message with respective values template< typename ARGTYPE1, typename ARGTYPE2, typename ARGTYPE3, typename ARGTYPE4, typename ARGTYPE5 > void log( const sal_Int32 _nLogLevel, const sal_Char* _pMessage, ARGTYPE1 _argument1, ARGTYPE2 _argument2, ARGTYPE3 _argument3, ARGTYPE4 _argument4, ARGTYPE5 _argument5 ) const { if ( isLoggable( _nLogLevel ) ) impl_log( _nLogLevel, nullptr, nullptr, OUString::createFromAscii( _pMessage ), OptionalString( log::convert::convertLogArgToString( _argument1 ) ), OptionalString( log::convert::convertLogArgToString( _argument2 ) ), OptionalString( log::convert::convertLogArgToString( _argument3 ) ), OptionalString( log::convert::convertLogArgToString( _argument4 ) ), OptionalString( log::convert::convertLogArgToString( _argument5 ) ) ); } /// logs a given message, replacing 6 placeholders in the message with respective values template< typename ARGTYPE1, typename ARGTYPE2, typename ARGTYPE3, typename ARGTYPE4, typename ARGTYPE5, typename ARGTYPE6 > void log( const sal_Int32 _nLogLevel, const sal_Char* _pMessage, ARGTYPE1 _argument1, ARGTYPE2 _argument2, ARGTYPE3 _argument3, ARGTYPE4 _argument4, ARGTYPE5 _argument5, ARGTYPE6 _argument6 ) const { if ( isLoggable( _nLogLevel ) ) impl_log( _nLogLevel, nullptr, nullptr, OUString::createFromAscii( _pMessage ), OptionalString( log::convert::convertLogArgToString( _argument1 ) ), OptionalString( log::convert::convertLogArgToString( _argument2 ) ), OptionalString( log::convert::convertLogArgToString( _argument3 ) ), OptionalString( log::convert::convertLogArgToString( _argument4 ) ), OptionalString( log::convert::convertLogArgToString( _argument5 ) ), OptionalString( log::convert::convertLogArgToString( _argument6 ) ) ); } //- XLogger::logp equivalents/wrappers //- string messages /** logs a given message, replacing a placeholder in the message with an argument The function takes, additionally to the logp level and the message, an arbitrary argument. This argument is converted to a string using an overloaded function named convertLogArgToString. Then, a placeholder "$1$" is searched in the message string, and replaced with the argument string. */ template< typename ARGTYPE1 > void logp( const sal_Int32 _nLogLevel, const sal_Char* _pSourceClass, const sal_Char* _pSourceMethod, const OUString& _rMessage, ARGTYPE1 _argument1 ) const { if ( isLoggable( _nLogLevel ) ) impl_log( _nLogLevel, _pSourceClass, _pSourceMethod, _rMessage, OptionalString( log::convert::convertLogArgToString( _argument1 ) ) ); } /// logs a given message, replacing 2 placeholders in the message with respective values template< typename ARGTYPE1, typename ARGTYPE2 > void logp( const sal_Int32 _nLogLevel, const sal_Char* _pSourceClass, const sal_Char* _pSourceMethod, const OUString& _rMessage, ARGTYPE1 _argument1, ARGTYPE2 _argument2 ) const { if ( isLoggable( _nLogLevel ) ) impl_log( _nLogLevel, _pSourceClass, _pSourceMethod, _rMessage, OptionalString( log::convert::convertLogArgToString( _argument1 ) ), OptionalString( log::convert::convertLogArgToString( _argument2 ) ) ); } /// logs a given message, replacing 3 placeholders in the message with respective values template< typename ARGTYPE1, typename ARGTYPE2, typename ARGTYPE3 > void logp( const sal_Int32 _nLogLevel, const sal_Char* _pSourceClass, const sal_Char* _pSourceMethod, const OUString& _rMessage, ARGTYPE1 _argument1, ARGTYPE2 _argument2, ARGTYPE3 _argument3 ) const { if ( isLoggable( _nLogLevel ) ) impl_log( _nLogLevel, _pSourceClass, _pSourceMethod, _rMessage, OptionalString( log::convert::convertLogArgToString( _argument1 ) ), OptionalString( log::convert::convertLogArgToString( _argument2 ) ), OptionalString( log::convert::convertLogArgToString( _argument3 ) ) ); } /// logs a given message, replacing 4 placeholders in the message with respective values template< typename ARGTYPE1, typename ARGTYPE2, typename ARGTYPE3, typename ARGTYPE4 > void logp( const sal_Int32 _nLogLevel, const sal_Char* _pSourceClass, const sal_Char* _pSourceMethod, const OUString& _rMessage, ARGTYPE1 _argument1, ARGTYPE2 _argument2, ARGTYPE3 _argument3, ARGTYPE4 _argument4 ) const { if ( isLoggable( _nLogLevel ) ) impl_log( _nLogLevel, _pSourceClass, _pSourceMethod, _rMessage, OptionalString( log::convert::convertLogArgToString( _argument1 ) ), OptionalString( log::convert::convertLogArgToString( _argument2 ) ), OptionalString( log::convert::convertLogArgToString( _argument3 ) ), OptionalString( log::convert::convertLogArgToString( _argument4 ) ) ); } /// logs a given message, replacing 5 placeholders in the message with respective values template< typename ARGTYPE1, typename ARGTYPE2, typename ARGTYPE3, typename ARGTYPE4, typename ARGTYPE5 > void logp( const sal_Int32 _nLogLevel, const sal_Char* _pSourceClass, const sal_Char* _pSourceMethod, const OUString& _rMessage, ARGTYPE1 _argument1, ARGTYPE2 _argument2, ARGTYPE3 _argument3, ARGTYPE4 _argument4, ARGTYPE5 _argument5 ) const { if ( isLoggable( _nLogLevel ) ) impl_log( _nLogLevel, _pSourceClass, _pSourceMethod, _rMessage, OptionalString( log::convert::convertLogArgToString( _argument1 ) ), OptionalString( log::convert::convertLogArgToString( _argument2 ) ), OptionalString( log::convert::convertLogArgToString( _argument3 ) ), OptionalString( log::convert::convertLogArgToString( _argument4 ) ), OptionalString( log::convert::convertLogArgToString( _argument5 ) ) ); } /// logs a given message, replacing 6 placeholders in the message with respective values template< typename ARGTYPE1, typename ARGTYPE2, typename ARGTYPE3, typename ARGTYPE4, typename ARGTYPE5, typename ARGTYPE6 > void logp( const sal_Int32 _nLogLevel, const sal_Char* _pSourceClass, const sal_Char* _pSourceMethod, const OUString& _rMessage, ARGTYPE1 _argument1, ARGTYPE2 _argument2, ARGTYPE3 _argument3, ARGTYPE4 _argument4, ARGTYPE5 _argument5, ARGTYPE6 _argument6 ) const { if ( isLoggable( _nLogLevel ) ) impl_log( _nLogLevel, _pSourceClass, _pSourceMethod, _rMessage, OptionalString( log::convert::convertLogArgToString( _argument1 ) ), OptionalString( log::convert::convertLogArgToString( _argument2 ) ), OptionalString( log::convert::convertLogArgToString( _argument3 ) ), OptionalString( log::convert::convertLogArgToString( _argument4 ) ), OptionalString( log::convert::convertLogArgToString( _argument5 ) ), OptionalString( log::convert::convertLogArgToString( _argument6 ) ) ); } //- XLogger::logp equivalents/wrappers //- ASCII messages /** logs a given ASCII message, replacing a placeholder in the message with an argument The function takes, additionally to the logp level and the message, an arbitrary argument. This argument is converted to a string using an overloaded function named convertLogArgToString. Then, a placeholder "$1$" is searched in the message string, and replaced with the argument string. */ template< typename ARGTYPE1 > void logp( const sal_Int32 _nLogLevel, const sal_Char* _pSourceClass, const sal_Char* _pSourceMethod, const sal_Char* _pAsciiMessage, ARGTYPE1 _argument1 ) const { if ( isLoggable( _nLogLevel ) ) impl_log( _nLogLevel, _pSourceClass, _pSourceMethod, OUString::createFromAscii( _pAsciiMessage ), OptionalString( log::convert::convertLogArgToString( _argument1 ) ) ); } /// logs a given ASCII message, replacing 2 placeholders in the message with respective values template< typename ARGTYPE1, typename ARGTYPE2 > void logp( const sal_Int32 _nLogLevel, const sal_Char* _pSourceClass, const sal_Char* _pSourceMethod, const sal_Char* _pAsciiMessage, ARGTYPE1 _argument1, ARGTYPE2 _argument2 ) const { if ( isLoggable( _nLogLevel ) ) impl_log( _nLogLevel, _pSourceClass, _pSourceMethod, OUString::createFromAscii( _pAsciiMessage ), OptionalString( log::convert::convertLogArgToString( _argument1 ) ), OptionalString( log::convert::convertLogArgToString( _argument2 ) ) ); } /// logs a given ASCII message, replacing 3 placeholders in the message with respective values template< typename ARGTYPE1, typename ARGTYPE2, typename ARGTYPE3 > void logp( const sal_Int32 _nLogLevel, const sal_Char* _pSourceClass, const sal_Char* _pSourceMethod, const sal_Char* _pAsciiMessage, ARGTYPE1 _argument1, ARGTYPE2 _argument2, ARGTYPE3 _argument3 ) const { if ( isLoggable( _nLogLevel ) ) impl_log( _nLogLevel, _pSourceClass, _pSourceMethod, OUString::createFromAscii( _pAsciiMessage ), OptionalString( log::convert::convertLogArgToString( _argument1 ) ), OptionalString( log::convert::convertLogArgToString( _argument2 ) ), OptionalString( log::convert::convertLogArgToString( _argument3 ) ) ); } /// logs a given ASCII message, replacing 4 placeholders in the message with respective values template< typename ARGTYPE1, typename ARGTYPE2, typename ARGTYPE3, typename ARGTYPE4 > void logp( const sal_Int32 _nLogLevel, const sal_Char* _pSourceClass, const sal_Char* _pSourceMethod, const sal_Char* _pAsciiMessage, ARGTYPE1 _argument1, ARGTYPE2 _argument2, ARGTYPE3 _argument3, ARGTYPE4 _argument4 ) const { if ( isLoggable( _nLogLevel ) ) impl_log( _nLogLevel, _pSourceClass, _pSourceMethod, OUString::createFromAscii( _pAsciiMessage ), OptionalString( log::convert::convertLogArgToString( _argument1 ) ), OptionalString( log::convert::convertLogArgToString( _argument2 ) ), OptionalString( log::convert::convertLogArgToString( _argument3 ) ), OptionalString( log::convert::convertLogArgToString( _argument4 ) ) ); } /// logs a given ASCII message, replacing 5 placeholders in the message with respective values template< typename ARGTYPE1, typename ARGTYPE2, typename ARGTYPE3, typename ARGTYPE4, typename ARGTYPE5 > void logp( const sal_Int32 _nLogLevel, const sal_Char* _pSourceClass, const sal_Char* _pSourceMethod, const sal_Char* _pAsciiMessage, ARGTYPE1 _argument1, ARGTYPE2 _argument2, ARGTYPE3 _argument3, ARGTYPE4 _argument4, ARGTYPE5 _argument5 ) const { if ( isLoggable( _nLogLevel ) ) impl_log( _nLogLevel, _pSourceClass, _pSourceMethod, OUString::createFromAscii( _pAsciiMessage ), OptionalString( log::convert::convertLogArgToString( _argument1 ) ), OptionalString( log::convert::convertLogArgToString( _argument2 ) ), OptionalString( log::convert::convertLogArgToString( _argument3 ) ), OptionalString( log::convert::convertLogArgToString( _argument4 ) ), OptionalString( log::convert::convertLogArgToString( _argument5 ) ) ); } /// logs a given ASCII message, replacing 6 placeholders in the message with respective values template< typename ARGTYPE1, typename ARGTYPE2, typename ARGTYPE3, typename ARGTYPE4, typename ARGTYPE5, typename ARGTYPE6 > void logp( const sal_Int32 _nLogLevel, const sal_Char* _pSourceClass, const sal_Char* _pSourceMethod, const sal_Char* _pAsciiMessage, ARGTYPE1 _argument1, ARGTYPE2 _argument2, ARGTYPE3 _argument3, ARGTYPE4 _argument4, ARGTYPE5 _argument5, ARGTYPE6 _argument6 ) const { if ( isLoggable( _nLogLevel ) ) impl_log( _nLogLevel, _pSourceClass, _pSourceMethod, OUString::createFromAscii( _pAsciiMessage ), OptionalString( log::convert::convertLogArgToString( _argument1 ) ), OptionalString( log::convert::convertLogArgToString( _argument2 ) ), OptionalString( log::convert::convertLogArgToString( _argument3 ) ), OptionalString( log::convert::convertLogArgToString( _argument4 ) ), OptionalString( log::convert::convertLogArgToString( _argument5 ) ), OptionalString( log::convert::convertLogArgToString( _argument6 ) ) ); } protected: void impl_log( const sal_Int32 _nLogLevel, const sal_Char* _pSourceClass, const sal_Char* _pSourceMethod, const OUString& _rMessage, const OptionalString& _rArgument1 = OptionalString(), const OptionalString& _rArgument2 = OptionalString(), const OptionalString& _rArgument3 = OptionalString(), const OptionalString& _rArgument4 = OptionalString(), const OptionalString& _rArgument5 = OptionalString(), const OptionalString& _rArgument6 = OptionalString() ) const; }; } // namespace comphelper #endif // INCLUDED_COMPHELPER_LOGGING_HXX /* vim:set shiftwidth=4 softtabstop=4 expandtab: */