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
    {
      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)
    { 
      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
    {
      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) 
    { 
      return out.write(buffer, length); 
    }
 
  protected:
    JFile out;
  };
}
 
#endif