winix/core/slog.h

/*
 * This file is a part of Winix
 * and is distributed under the 2-Clause BSD licence.
 * Author: Tomasz Sowa <t.sowa@ttmath.org>
 */

/* 
 * Copyright (c) 2011-2014, Tomasz Sowa
 * All rights reserved.
 * 
 * Redistribution and use in source and binary forms, with or without
 * modification, are permitted provided that the following conditions are met:
 * 
 * 1. Redistributions of source code must retain the above copyright notice,
 * this list of conditions and the following disclaimer.
 * 
 * 2. Redistributions in binary form must reproduce the above copyright
 * notice, this list of conditions and the following disclaimer in the
 * documentation and/or other materials provided with the distribution.
 * 
 * THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS "AS IS"
 * AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
 * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
 * ARE DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT HOLDER OR CONTRIBUTORS BE
 * LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR
 * CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF
 * SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS
 * INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN
 * CONTRACT, STRICT LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE)
 * ARISING IN ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE
 * POSSIBILITY OF SUCH DAMAGE.
 * 
 */
 
#ifndef headerfile_winix_core_slog
#define headerfile_winix_core_slog

#include "cur.h"
#include "logmanipulators.h"
#include "templates/locale.h"
#include "textstream/textstream.h"


namespace Winix
{



#define WINIX_SLOG_MAX_LOG_SIZE 10240


/*
	session logger

	sample:
	#include "log.h" (or slog.h)
	slog << logerror << "message" << "something" << logend;
	slog << logwarning << T("message_to_translate") << x << logend;

	if the latter example "message_to_translate" will be taken from locales
	currently following manipulators are taken into account:
		loginfo    - the message in a normal info
		logwarning - this is a warning
		logerror   - this is an error
		logend     - end of a line -- we have one kind of a message (info, warning, error) per line

	loginfo, logwarning, logerror should be specified at the beginning of a line
	(other manipulators are skipped)
*/
class SLog
{
public:

	SLog();

	void SetCur(Cur * pcur);
	void SetLocale(Locale * plocale);

	template<class RawType>
	struct TranslateTextHelper
	{
		const RawType & par;

		TranslateTextHelper(const TranslateTextHelper<RawType> & p) : par(p.par) {}
		TranslateTextHelper(const RawType & p) : par(p) {}
	};

	SLog & operator<<(const void * s);
	SLog & operator<<(const char * s);
	SLog & operator<<(const std::string * s);
	SLog & operator<<(const std::string & s);
	SLog & operator<<(const wchar_t * s);
	SLog & operator<<(const std::wstring * s);
	SLog & operator<<(const std::wstring & s);
	SLog & operator<<(int s);
	SLog & operator<<(long s);
	SLog & operator<<(char s);
	SLog & operator<<(wchar_t s);
	SLog & operator<<(size_t s);
	SLog & operator<<(double s);
	SLog & operator<<(LogManipulators m);
	SLog & operator<<(const PT::Date & date);

	template<typename char_type, size_t stack_size, size_t heap_block_size>
	SLog & operator<<(const PT::TextStreamBase<char_type, stack_size, heap_block_size> & buf);


	SLog & TranslateText(const char * str);
	SLog & TranslateText(const wchar_t * str);

	template<size_t str_size>
	SLog & operator<<(const TranslateTextHelper<const char [str_size]> & raw)	{ return TranslateText(raw.par); }

	template<size_t str_size>
	SLog & operator<<(const TranslateTextHelper<const wchar_t [str_size]> & raw){ return TranslateText(raw.par); }

	template<size_t str_size>
	SLog & operator<<(const TranslateTextHelper<char [str_size]> & raw)	{ return TranslateText(raw.par); }

	template<size_t str_size>
	SLog & operator<<(const TranslateTextHelper<wchar_t [str_size]> & raw){ return TranslateText(raw.par); }

	SLog & operator<<(const TranslateTextHelper<const char*> & raw);
	SLog & operator<<(const TranslateTextHelper<const wchar_t*> & raw);
	SLog & operator<<(TranslateTextHelper<const std::string*> raw);
	SLog & operator<<(TranslateTextHelper<const std::wstring*> raw);
	SLog & operator<<(TranslateTextHelper<std::string> raw);
	SLog & operator<<(TranslateTextHelper<std::wstring> raw);


private:

	template<class LogParam>
	SLog & PutLog(const LogParam & par);

	Cur * cur;
	Locale * locale;
	std::wstring key_temp;

};


template<class RawType>
SLog::TranslateTextHelper<RawType> T(const RawType & par)
{
	return SLog::TranslateTextHelper<RawType>(par);
}


template<typename char_type, size_t stack_size, size_t heap_block_size>
SLog & SLog::operator<<(const PT::TextStreamBase<char_type, stack_size, heap_block_size> & buf)
{
	return PutLog(buf);
}


template<class LogParam>
SLog & SLog::PutLog(const LogParam & par)
{
	if( cur && cur->session )
		cur->session->log_buffer << par;

return *this;
}


extern SLog slog;



} // namespace Winix


#endif