JFileIO.hh

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#ifndef __JIO__JFILEIO__
#define __JIO__JFILEIO__

#include <fcntl.h>

#include "JIO/JSerialisable.hh"
#include "JLang/JFile.hh"


/**
 * \author mdejong
 */

namespace JIO {}
namespace JPP { using namespace JIO; }

namespace JIO {

  using JLANG::JFile;


  /**
   * Binary input based on a file descriptor.
   * This class implements the JReader interface.
   */
  class JFileReader :
    public JReader
  {
  public:
    /**
     * Constructor.
     *
     * \param  file    file
     */
    JFileReader(const JFile& file) :
      in(file)
    {}


    /**
     * Status of reader.
     *
     * \return         status of this reader
     */
    virtual bool getStatus() const override 
    {
      return in.good();
    }


    /**
     * Read byte array.
     *
     * \param  buffer  pointer to byte array
     * \param  length  number of bytes
     * \return         number of bytes read
     */
    virtual int read(char* buffer, const int length) override 
    { 
      return in.read(buffer, length);
    }

  protected:
    JFile in;
  };


  /**
   * Binary output based on a file descriptor.
   * This class implements the JWriter interface.
   */
  class JFileWriter : 
    public JWriter
  {
  public:
    /**
     * Constructor.
     *
     * \param  file    file
     */
    JFileWriter(const JFile& file) :
      out(file)
    {}


    /**
     * Status of writer.
     *
     * \return         status of this writer
     */
    virtual bool getStatus() const override 
    {
      return out.good();
    }


    /**
     * Write byte array.
     *
     * \param  buffer  pointer to byte array
     * \param  length  number of bytes
     * \return         number of bytes written
     */
    virtual int write(const char* buffer, const int length) override 
    { 
      return out.write(buffer, length); 
    }

  protected:
    JFile out;
  };
}

#endif