JCommunicator.hh

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#ifndef __JEEP__JCOMMUNICATOR__
#define __JEEP__JCOMMUNICATOR__
 
#include <iostream>
 
#include "JLang/JNullStream.hh"
 
 
/**
 * \file
 * Switching on/off of standard and error output streams.
 * \author mdejong
 */
namespace JEEP {}
namespace JPP { using namespace JEEP; }
 
namespace JEEP {
 
 
  /**
   * Auxiliary class to control standard input and output.
   */
  class JCommunicator {
  public:
    /**
     * Default constructor.
     */
    JCommunicator() :
      verbose_(true)
    {}
 
 
    /**
     * Constructor.
     *
     * \param verbose       disable I/O if false; else enable
     */
    JCommunicator(const bool verbose) :
      verbose_(verbose)
    {}
 
 
    /**
     * Get verbose mode.
     *
     * \return              if true I/O enabled; else disabled
     */
    bool getVerbose() const
    { 
      return verbose_;
    }
 
 
    /**
     * Set verbose mode.
     *
     * \param verbose       disable I/O if false; else enable
     */
    void setVerbose(const bool verbose = true) 
    { 
      verbose_ = verbose; 
    }
 
 
    /**
     * Get current input stream.
     * This method returns the given input stream if the verbose option is set,
     * else a streamer that does not read any input.
     *
     * \param   in    input stream
     * \return        input stream
     */
    std::istream& getInputStream(std::istream& in = std::cin) const
    {
      return (verbose_ ? in : JLANG::null);
    }
 
 
    /**
     * Get current output stream.
     * This method returns the given output stream if the verbose option is set,
     * else a streamer that does not write any output.
     *
     * \param  out    output stream
     * \return        output stream
     */
    std::ostream& getOutputStream(std::ostream& out = std::cout) const
    {
      return (verbose_ ? out : JLANG::null);
    }
 
 
    /**
     * Get current error stream.
     * This method returns the given error stream if the verbose option is set,
     * else a streamer that does not write any output.
     *
     * \param  out    error stream
     * \return        error stream
     */
    std::ostream& getErrorStream(std::ostream& out = std::cerr) const
    {
      //return (verbose_ ? out : JLANG::null);
      return out;
    }
 
 
  protected:
    bool verbose_;
 };
 
}
 
#endif