LogFile.h

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#ifndef GCP_UTIL_LOGFILE_H
#define GCP_UTIL_LOGFILE_H

#include <string>
#include <sstream>

#include "gcp/util/common/TimeVal.h"
#include "gcp/util/common/LogFile.h"

namespace gcp {
  namespace util {
    
    class LogFile {
      
    public:
      
      LogFile();
      
      virtual ~LogFile();
      
      void setDirectory(const std::string& dir);
      
      void setPrefix(const std::string& prefix);
      
      void setDatePrefix();

      void open();
      
      void close();
      
      void flush();
      
      bool fileExists(std::string fileName);
      
      /*
       * Create a unique file name based on the prefix and files
       * already in the log directory
       */
      std::string newFileName();
      
      void prepend(std::string message);
      
      void append(std::string message, bool fullTime=false);
      
      LogFile& logFile();
      
    private:
      
      // Define a maximum version number for log files
      
      static const int MAX_VERSION;
      
      // A prefix to name log files
      
      std::string prefix_;
      bool datePrefix_;

      // The directory in which to write log files
      
      std::string directory_;
      
      // The file descriptor associated with our log file
      
      FILE* file_;
      
      // A message to prepend to any line we write to the log file
      
      std::string prependStr_;
      
      bool dataPrefix_;

      // The buffer into which we will accumulate data to be written
      // to a file
      
      std::ostringstream lineBuffer_;
      
      void initBuffer();
      
      void putLine(bool fullTime=false);
      
      void write(std::string line);
      
      
    }; // End class LogFile
    
  } // End namespace util
} // End namespace gcp




#endif // End #ifndef GCP_UTIL_LOGFILE_H