A log stream that does not output a message that have been recently output. More...

#include <log_stream_concise.hpp>

Inheritance diagram for claw::log_stream_concise:

Public Member Functions
	log_stream_concise (log_stream *s, std::size_t max_history_size=25)
	Constructor.
virtual	~log_stream_concise ()
	Destructor.
virtual void	write (const std::string &str)
	Write a string in the stream.
virtual void	flush ()
	Flush the stream.
Private Member Functions
void	output_current_line ()
	Output the current line, if not in the history.
Private Attributes
log_stream *	m_stream
	The stream in which the messages are finally written.
std::string	m_current_line
	The current line to send into the stream.
std::list< std::string >	m_previous_lines
	Recent lines sent to the stream.
std::size_t	m_max_history_size
	Maximum number of lines in the history.

Detailed Description

A log stream that does not output a message that have been recently output.

Author:: Julien Jorge

Definition at line 61 of file log_stream_concise.hpp.

Constructor & Destructor Documentation

claw::log_stream_concise::log_stream_concise	(	log_stream *	s,
		std::size_t	max_history_size = `25`
	)		`[explicit]`

Constructor.

Parameters:

s	The stream in which the messages are finally written. It will be deleted in the destructor.
max_history_size	The maximum number of lines in the history.

Definition at line 42 of file log_stream_concise.cpp.

  : m_stream(s), m_max_history_size(max_history_size)
{

} // log_stream_concise::log_stream_concise()

claw::log_stream_concise::~log_stream_concise ( ) [virtual]

Destructor.

Definition at line 52 of file log_stream_concise.cpp.

References m_stream.

{
  delete m_stream;
} // log_stream_concise::~log_stream_concise()

Member Function Documentation

void claw::log_stream_concise::flush ( ) [virtual]

Flush the stream.

Reimplemented from claw::log_stream.

Definition at line 84 of file log_stream_concise.cpp.

{
  m_stream->flush();
} // log_stream_concise::flush()

void claw::log_stream_concise::output_current_line ( ) [private]

Output the current line, if not in the history.

Definition at line 93 of file log_stream_concise.cpp.

{
  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()

void claw::log_stream_concise::write ( const std::string & str ) [virtual]

Write a string in the stream.

Parameters:

str	The sring to write.

Implements claw::log_stream.

Definition at line 62 of file log_stream_concise.cpp.

{
  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()