/*
 * 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.
 * 
 */
 
#include "core/slog.h"
#include "templates.h"

namespace Winix
{


namespace TemplatesFunctions
{
static size_t slog_index = 0;
static LogManipulators slog_last_type;



bool slog_is()
{
	if( !cur->session )
		return false;

return slog_index < cur->session->log_buffer.Size();
}


void slog_skipline()
{
	if( !cur->session )
		return;

	TextStream<std::wstring> & buf = cur->session->log_buffer;

	while( slog_index < buf.Size() && buf[slog_index]!=10 )
		slog_index += 1;

	if( slog_index < buf.Size() )
		slog_index += 1; // skipping the '\n'
}


void slog_settype()
{
	if( !slog_is() )
		return;

	TextStream<std::wstring> & buf = cur->session->log_buffer;
	slog_last_type = static_cast<LogManipulators>(buf[slog_index]);

	switch( slog_last_type )
	{
	case loginfo:
	case logwarning:
	case logerror:
		slog_index += 1;
		break;

	default:
		slog_last_type = loginfo;
	}
}


void slog_tab(Info & i)
{
	if( i.iter == 0 )
		slog_index = 0;
	else
		slog_skipline();

	// the type is written as the first character (after '\n' or at the beginning of the string)
	slog_settype();

	i.res = slog_is();

	if( cur->session && !i.res )
		cur->session->log_buffer.Clear(); // the session log has been printed
}


void slog_tab_is_info(Info & i)
{
	if( !slog_is() )
		return;

	i.res = (slog_last_type == loginfo);
}


void slog_tab_is_warning(Info & i)
{
	if( !slog_is() )
		return;

	i.res = (slog_last_type == logwarning);
}


void slog_tab_is_error(Info & i)
{
	if( !slog_is() )
		return;

	i.res = (slog_last_type == logerror);
}


void slog_tab_print(Info & i)
{
	if( !slog_is() )
		return;

	TextStream<std::wstring> & buf = cur->session->log_buffer;

	while( slog_index < buf.Size() && buf[slog_index]!=10 )
	{
		i.out << buf[slog_index];
		slog_index += 1;
	}

	// don't skip the last '\n' here
}





} // namespace TemplatesFunctions

} // namespace Winix