stella/src/emucore/Serializer.cxx

//============================================================================
//
//   SSSS    tt          lll  lll       
//  SS  SS   tt           ll   ll        
//  SS     tttttt  eeee   ll   ll   aaaa 
//   SSSS    tt   ee  ee  ll   ll      aa
//      SS   tt   eeeeee  ll   ll   aaaaa  --  "An Atari 2600 VCS Emulator"
//  SS  SS   tt   ee      ll   ll  aa  aa
//   SSSS     ttt  eeeee llll llll  aaaaa
//
// Copyright (c) 1995-2009 by Bradford W. Mott and the Stella team
//
// See the file "license" for information on usage and redistribution of
// this file, and for a DISCLAIMER OF ALL WARRANTIES.
//
// $Id$
//============================================================================

#include "Serializer.hxx"

// - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - -
Serializer::Serializer(void)
{
}

// - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - -
Serializer::~Serializer(void)
{
  close();
}

// - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - -
bool Serializer::open(const string& fileName)
{
  close();
  myStream.open(fileName.c_str(), ios::out | ios::binary);

  return isOpen();
}

// - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - -
void Serializer::close(void)
{
  myStream.close();
  myStream.clear();
}

// - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - -
bool Serializer::isOpen(void)
{
  return myStream.is_open();
}

// - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - -
void Serializer::putByte(char value)
{
  char buf[1];
  buf[0] = value;
  myStream.write(buf, 1);
  if(myStream.bad())
    throw "Serializer: file write failed";
}

// - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - -
void Serializer::putInt(int value)
{
  unsigned char buf[4];
  for(int i = 0; i < 4; ++i)
    buf[i] = (value >> (i<<3)) & 0xff;

  myStream.write((char*)buf, 4);
  if(myStream.bad())
    throw "Serializer: file write failed";
}

// - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - -
void Serializer::putString(const string& str)
{
  int len = str.length();
  putInt(len);
  myStream.write(str.data(), (streamsize)len);

  if(myStream.bad())
    throw "Serializer: file write failed";
}

// - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - -
void Serializer::putBool(bool b)
{
  putByte(b ? TruePattern: FalsePattern);
}