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/*
* Copyright (C) 2005-2018 Team Kodi
* This file is part of Kodi - https://kodi.tv
*
* SPDX-License-Identifier: GPL-2.0-or-later
* See LICENSES/README.md for more information.
*/
#pragma once
#include <cstring>
#include <memory>
#include <string>
#include <vector>
#define CARCHIVE_BUFFER_MAX 4096
namespace XFILE
{
class CFile;
}
class CVariant;
class IArchivable;
namespace KODI::TIME
{
struct SystemTime;
}
class CArchive
{
public:
CArchive(XFILE::CFile* pFile, int mode);
~CArchive();
/* CArchive support storing and loading of all C basic integer types
* C basic types was chosen instead of fixed size ints (int16_t - int64_t) to support all integer typedefs
* For example size_t can be typedef of unsigned int, long or long long depending on platform
* while int32_t and int64_t are usually unsigned short, int or long long, but not long
* and even if int and long can have same binary representation they are different types for compiler
* According to section 5.2.4.2.1 of C99 http://www.open-std.org/jtc1/sc22/wg14/www/docs/n1256.pdf
* minimal size of short int is 16 bits
* minimal size of int is 16 bits (usually 32 or 64 bits, larger or equal to short int)
* minimal size of long int is 32 bits (larger or equal to int)
* minimal size of long long int is 64 bits (larger or equal to long int) */
// storing
CArchive& operator<<(float f);
CArchive& operator<<(double d);
CArchive& operator<<(short int s);
CArchive& operator<<(unsigned short int us);
CArchive& operator<<(int i);
CArchive& operator<<(unsigned int ui);
CArchive& operator<<(long int l);
CArchive& operator<<(unsigned long int ul);
CArchive& operator<<(long long int ll);
CArchive& operator<<(unsigned long long int ull);
CArchive& operator<<(bool b);
CArchive& operator<<(char c);
CArchive& operator<<(const std::string &str);
CArchive& operator<<(const std::wstring& wstr);
CArchive& operator<<(const KODI::TIME::SystemTime& time);
CArchive& operator<<(IArchivable& obj);
CArchive& operator<<(const CVariant& variant);
CArchive& operator<<(const std::vector<std::string>& strArray);
CArchive& operator<<(const std::vector<int>& iArray);
// loading
inline CArchive& operator>>(float& f)
{
return streamin(&f, sizeof(f));
}
inline CArchive& operator>>(double& d)
{
return streamin(&d, sizeof(d));
}
inline CArchive& operator>>(short int& s)
{
return streamin(&s, sizeof(s));
}
inline CArchive& operator>>(unsigned short int& us)
{
return streamin(&us, sizeof(us));
}
inline CArchive& operator>>(int& i)
{
return streamin(&i, sizeof(i));
}
inline CArchive& operator>>(unsigned int& ui)
{
return streamin(&ui, sizeof(ui));
}
inline CArchive& operator>>(long int& l)
{
return streamin(&l, sizeof(l));
}
inline CArchive& operator>>(unsigned long int& ul)
{
return streamin(&ul, sizeof(ul));
}
inline CArchive& operator>>(long long int& ll)
{
return streamin(&ll, sizeof(ll));
}
inline CArchive& operator>>(unsigned long long int& ull)
{
return streamin(&ull, sizeof(ull));
}
inline CArchive& operator>>(bool& b)
{
return streamin(&b, sizeof(b));
}
inline CArchive& operator>>(char& c)
{
return streamin(&c, sizeof(c));
}
CArchive& operator>>(std::string &str);
CArchive& operator>>(std::wstring& wstr);
CArchive& operator>>(KODI::TIME::SystemTime& time);
CArchive& operator>>(IArchivable& obj);
CArchive& operator>>(CVariant& variant);
CArchive& operator>>(std::vector<std::string>& strArray);
CArchive& operator>>(std::vector<int>& iArray);
bool IsLoading() const;
bool IsStoring() const;
void Close();
enum Mode {load = 0, store};
protected:
inline CArchive &streamout(const void *dataPtr, size_t size)
{
auto ptr = static_cast<const uint8_t *>(dataPtr);
/* Note, the buffer is flushed as soon as it is full (m_BufferRemain == size) rather
* than waiting until we attempt to put more data into an already full buffer */
if (m_BufferRemain > size)
{
memcpy(m_BufferPos, ptr, size);
m_BufferPos += size;
m_BufferRemain -= size;
return *this;
}
return streamout_bufferwrap(ptr, size);
}
inline CArchive &streamin(void *dataPtr, size_t size)
{
auto ptr = static_cast<uint8_t *>(dataPtr);
/* Note, refilling the buffer is deferred until we know we need to read more from it */
if (m_BufferRemain >= size)
{
memcpy(ptr, m_BufferPos, size);
m_BufferPos += size;
m_BufferRemain -= size;
return *this;
}
return streamin_bufferwrap(ptr, size);
}
XFILE::CFile* m_pFile; //non-owning
int m_iMode;
std::unique_ptr<uint8_t[]> m_pBuffer;
uint8_t *m_BufferPos;
size_t m_BufferRemain;
private:
void FlushBuffer();
CArchive &streamout_bufferwrap(const uint8_t *ptr, size_t size);
void FillBuffer();
CArchive &streamin_bufferwrap(uint8_t *ptr, size_t size);
};
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