/usr/include/console_bridge/console.h

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/* Author: Ryan Luna, Ioan Sucan */

#ifndef CONSOLE_BRIDGE_CONSOLE_
#define CONSOLE_BRIDGE_CONSOLE_

#include <string>

#include "exportdecl.h"

/** \file console.h
    \defgroup logging Logging Macros
    \{

    \def logError(fmt, ...)
    \brief Log a formatted error string.
    \remarks This macro takes the same arguments as <a href="http://www.cplusplus.com/reference/clibrary/cstdio/printf">printf</a>.

    \def logWarn(fmt, ...)
    \brief Log a formatted warning string.
    \remarks This macro takes the same arguments as <a href="http://www.cplusplus.com/reference/clibrary/cstdio/printf">printf</a>.

    \def logInform(fmt, ...)
    \brief Log a formatted information string.
    \remarks This macro takes the same arguments as <a href="http://www.cplusplus.com/reference/clibrary/cstdio/printf">printf</a>.

    \def logDebug(fmt, ...)
    \brief Log a formatted debugging string.
    \remarks This macro takes the same arguments as <a href="http://www.cplusplus.com/reference/clibrary/cstdio/printf">printf</a>.

    \}
*/
#define logError(fmt, ...)  console_bridge::log(__FILE__, __LINE__, console_bridge::CONSOLE_BRIDGE_LOG_ERROR, fmt, ##__VA_ARGS__)

#define logWarn(fmt, ...)   console_bridge::log(__FILE__, __LINE__, console_bridge::CONSOLE_BRIDGE_LOG_WARN,  fmt, ##__VA_ARGS__)

#define logInform(fmt, ...) console_bridge::log(__FILE__, __LINE__, console_bridge::CONSOLE_BRIDGE_LOG_INFO,  fmt, ##__VA_ARGS__)

#define logDebug(fmt, ...)  console_bridge::log(__FILE__, __LINE__, console_bridge::CONSOLE_BRIDGE_LOG_DEBUG, fmt, ##__VA_ARGS__)


/** \brief Message namespace. This contains classes needed to
    output error messages (or logging) from within the library.
    Message logging can be performed with \ref logging "logging macros" */
namespace console_bridge
{
/** \brief The set of priorities for message logging */
enum CONSOLE_BRIDGE_DLLAPI LogLevel
  {
    CONSOLE_BRIDGE_LOG_DEBUG = 0,
    CONSOLE_BRIDGE_LOG_INFO,
    CONSOLE_BRIDGE_LOG_WARN,
    CONSOLE_BRIDGE_LOG_ERROR,
    CONSOLE_BRIDGE_LOG_NONE
  };

/** \brief Generic class to handle output from a piece of
    code.
    
    In order to handle output from the library in different
    ways, an implementation of this class needs to be
    provided. This instance can be set with the useOutputHandler
    function. */
class CONSOLE_BRIDGE_DLLAPI OutputHandler
{
public:
  
  OutputHandler(void)
  {
  }
  
  virtual ~OutputHandler(void)
  {
  }
  
  /** \brief log a message to the output handler with the given text
      and logging level from a specific file and line number */
  virtual void log(const std::string &text, LogLevel level, const char *filename, int line) = 0;
};

/** \brief Default implementation of OutputHandler. This sends
    the information to the console. */
class CONSOLE_BRIDGE_DLLAPI OutputHandlerSTD : public OutputHandler
{
public:
  
  OutputHandlerSTD(void) : OutputHandler()
  {
  }
  
  virtual void log(const std::string &text, LogLevel level, const char *filename, int line);
  
};

/** \brief Implementation of OutputHandler that saves messages in a file. */
class CONSOLE_BRIDGE_DLLAPI OutputHandlerFile : public OutputHandler
{
public:
  
  /** \brief The name of the file in which to save the message data */
  OutputHandlerFile(const char *filename);
  
  virtual ~OutputHandlerFile(void);
  
  virtual void log(const std::string &text, LogLevel level, const char *filename, int line);
  
private:
  
  /** \brief The file to save to */
  FILE *file_;
  
};

/** \brief This function instructs ompl that no messages should be outputted. Equivalent to useOutputHandler(NULL) */
CONSOLE_BRIDGE_DLLAPI void noOutputHandler(void);

/** \brief Restore the output handler that was previously in use (if any) */
CONSOLE_BRIDGE_DLLAPI void restorePreviousOutputHandler(void);

/** \brief Specify the instance of the OutputHandler to use. By default, this is OutputHandlerSTD */
CONSOLE_BRIDGE_DLLAPI void useOutputHandler(OutputHandler *oh);

/** \brief Get the instance of the OutputHandler currently used. This is NULL in case there is no output handler. */
CONSOLE_BRIDGE_DLLAPI OutputHandler* getOutputHandler(void);

/** \brief Set the minimum level of logging data to output.  Messages
    with lower logging levels will not be recorded. */
CONSOLE_BRIDGE_DLLAPI void setLogLevel(LogLevel level);

/** \brief Retrieve the current level of logging data.  Messages
    with lower logging levels will not be recorded. */
CONSOLE_BRIDGE_DLLAPI LogLevel getLogLevel(void);

/** \brief Root level logging function.  This should not be invoked directly,
    but rather used via a \ref logging "logging macro".  Formats the message
    string given the arguments and forwards the string to the output handler */
CONSOLE_BRIDGE_DLLAPI void log(const char *file, int line, LogLevel level, const char* m, ...);
}


#endif
libconsole-bridge-dev 0.2.5-2+b1 / usr / include / console_bridge / console.h
