log_stream_concise.cpp
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/*
CLAW - a C++ Library Absolutely Wonderful
CLAW is a free library without any particular aim but being useful to
anyone.
Copyright (C) 2005-2011 Julien Jorge
This library is free software; you can redistribute it and/or
modify it under the terms of the GNU Lesser General Public
License as published by the Free Software Foundation; either
version 2.1 of the License, or (at your option) any later version.
This library is distributed in the hope that it will be useful,
but WITHOUT ANY WARRANTY; without even the implied warranty of
MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
Lesser General Public License for more details.
You should have received a copy of the GNU Lesser General Public
License along with this library; if not, write to the Free Software
Foundation, Inc., 51 Franklin St, Fifth Floor, Boston, MA 02110-1301 USA
contact: julien.jorge@gamned.org
*/
#include <claw/log_stream_concise.hpp>
#include <algorithm>
/*----------------------------------------------------------------------------*/
claw::log_stream_concise::log_stream_concise
( log_stream* s, std::size_t max_history_size )
: m_stream(s), m_max_history_size(max_history_size)
{
} // log_stream_concise::log_stream_concise()
/*----------------------------------------------------------------------------*/
claw::log_stream_concise::~log_stream_concise()
{
delete m_stream;
} // log_stream_concise::~log_stream_concise()
/*----------------------------------------------------------------------------*/
void claw::log_stream_concise::write( const std::string& str )
{
std::string::size_type p = str.find_first_of('\n');
if ( p == std::string::npos )
m_current_line += str;
else
{
++p; // includes the '\n'
m_current_line += str.substr(0, p);
output_current_line();
if ( p != str.length() )
write( str.substr(p) );
}
} // log_stream_concise::write()
/*----------------------------------------------------------------------------*/
void claw::log_stream_concise::flush()
{
m_stream->flush();
} // log_stream_concise::flush()
/*----------------------------------------------------------------------------*/
void claw::log_stream_concise::output_current_line()
{
if ( std::find
(m_previous_lines.begin(), m_previous_lines.end(), m_current_line)
== m_previous_lines.end() )
{
m_previous_lines.push_back( m_current_line );
m_stream->write( m_current_line );
if (m_previous_lines.size() > m_max_history_size)
m_previous_lines.pop_front();
}
m_current_line.clear();
} // log_stream_concise::output_current_line()
claw::log_stream_concise::log_stream_concise
log_stream_concise(log_stream *s, std::size_t max_history_size=25)
Constructor.
Definition log_stream_concise.cpp:42
claw::log_stream_concise::~log_stream_concise
virtual ~log_stream_concise()
Destructor.
Definition log_stream_concise.cpp:52
claw::log_stream_concise::write
virtual void write(const std::string &str)
Write a string in the stream.
Definition log_stream_concise.cpp:62
claw::log_stream_concise::flush
virtual void flush()
Flush the stream.
Definition log_stream_concise.cpp:84
claw::log_stream
Base class for streams accepting log output.
Definition log_stream.hpp:60
log_stream_concise.hpp
A log stream that does not output a message that have been recently output.