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#ifndef SERIALIZE_H_INCLUDED
#define SERIALIZE_H_INCLUDED
#include "zstring.h"
#include <wx/stream.h>
#include "fileError.h"
#include <boost/scoped_array.hpp>
#include <boost/shared_ptr.hpp>
namespace Utility
{
template <class T>
T readNumber(wxInputStream& stream);
template <class T>
void writeNumber(wxOutputStream& stream, T number);
Zstring readString(wxInputStream& stream);
void writeString(wxOutputStream& stream, const Zstring& str);
class ReadInputStream //throw FileError()
{
protected:
ReadInputStream(wxInputStream& stream, const wxString& errorObjName) : stream_(stream), errorObjName_(errorObjName) {}
template <class T>
T readNumberC(); //checked read operation
Zstring readStringC(); //checked read operation
typedef boost::shared_ptr<std::vector<char> > CharArray;
CharArray readArrayC();
void check();
protected:
wxInputStream& stream_;
private:
void throwReadError(); //throw FileError()
const wxString& errorObjName_; //used for error text only
};
class WriteOutputStream //throw FileError()
{
protected:
WriteOutputStream(const wxString& errorObjName, wxOutputStream& stream) : stream_(stream), errorObjName_(errorObjName) {}
template <class T>
void writeNumberC(T number); //checked write operation
void writeStringC(const Zstring& str); //checked write operation
void writeArrayC(const std::vector<char>& buffer);
void check();
protected:
wxOutputStream& stream_;
private:
void throwWriteError(); //throw FileError()
const wxString& errorObjName_; //used for error text only!
};
//---------------Inline Implementation---------------------------------------------------
template <class T>
inline
T readNumber(wxInputStream& stream)
{
T result = 0;
stream.Read(&result, sizeof(T));
return result;
}
template <class T>
inline
void writeNumber(wxOutputStream& stream, T number)
{
stream.Write(&number, sizeof(T));
}
inline
Zstring readString(wxInputStream& stream) //read string from file stream
{
const size_t strLength = readNumber<size_t>(stream);
if (strLength <= 1000)
{
DefaultChar buffer[1000];
stream.Read(buffer, sizeof(DefaultChar) * strLength);
return Zstring(buffer, strLength);
}
else
{
boost::scoped_array<DefaultChar> buffer(new DefaultChar[strLength]);
stream.Read(buffer.get(), sizeof(DefaultChar) * strLength);
return Zstring(buffer.get(), strLength);
}
}
inline
void writeString(wxOutputStream& stream, const Zstring& str) //write string to filestream
{
writeNumber<size_t>(stream, str.length());
stream.Write(str.c_str(), sizeof(DefaultChar) * str.length());
}
inline
void ReadInputStream::check()
{
if (stream_.GetLastError() != wxSTREAM_NO_ERROR)
throwReadError();
}
template <class T>
inline
T ReadInputStream::readNumberC() //checked read operation
{
T output = readNumber<T>(stream_);
check();
return output;
}
inline
Zstring ReadInputStream::readStringC() //checked read operation
{
Zstring output = readString(stream_);
check();
return output;
}
template <class T>
inline
void WriteOutputStream::writeNumberC(T number) //checked write operation
{
writeNumber<T>(stream_, number);
check();
}
inline
void WriteOutputStream::writeStringC(const Zstring& str) //checked write operation
{
writeString(stream_, str);
check();
}
inline
void WriteOutputStream::check()
{
if (stream_.GetLastError() != wxSTREAM_NO_ERROR)
throwWriteError();
}
}
#endif // SERIALIZE_H_INCLUDED
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