assimp/include/LogStream.h

/*
Open Asset Import Library (ASSIMP)
----------------------------------------------------------------------

Copyright (c) 2006-2010, ASSIMP Development Team
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*/

/** @file LogStream.h
 *  @brief Abstract base class 'LogStream', representing an output log stream.
 */
#ifndef INCLUDED_AI_LOGSTREAM_H
#define INCLUDED_AI_LOGSTREAM_H
#include "aiTypes.h"
namespace Assimp	{
class IOSystem;

// ------------------------------------------------------------------------------------
/** @brief CPP-API: Abstract interface for log stream implementations.
 *
 *  Several default implementations are provided, see #aiDefaultLogStream for more
 *  details. Writing your own implementation of LogStream is just necessary if these
 *  are not enough for your purpose. */
class ASSIMP_API LogStream 
	: public Intern::AllocateFromAssimpHeap	{
protected:
	/** @brief	Default constructor	*/
	LogStream() {
	}
public:
	/** @brief	Virtual destructor	*/
	virtual ~LogStream() {
	}

	// -------------------------------------------------------------------
	/** @brief	Overwrite this for your own output methods
	 *
	 *  Log messages *may* consist of multiple lines and you shouldn't
	 *  expect a consistent formatting. If you want custom formatting 
	 *  (e.g. generate HTML), supply a custom instance of Logger to
	 *  #DefaultLogger:set(). Usually you can *expect* that a log message
	 *  is exactly one line and terminated with a single \n character.
	 *  @param message Message to be written */
	virtual void write(const char* message) = 0;

	// -------------------------------------------------------------------
	/** @brief Creates a default log stream
	 *  @param streams Type of the default stream
	 *  @param name For aiDefaultLogStream_FILE: name of the output file
	 *  @param io For aiDefaultLogStream_FILE: IOSystem to be used to open the output 
	 *   file. Pass NULL for the default implementation.
	 *  @return New LogStream instance.  */
	static LogStream* createDefaultStream(aiDefaultLogStream stream,
		const char* name = "AssimpLog.txt",
		IOSystem* io = NULL);

}; // !class LogStream
// ------------------------------------------------------------------------------------
} // Namespace Assimp

#endif