BinaryStoreHelper.h

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/*
    Copyright (C) 2009 Matthias Kretz <kretz@kde.org>

    This program is free software; you can redistribute it and/or
    modify it under the terms of the GNU Library General Public
    License as published by the Free Software Foundation; either
    version 2 of the License, or (at your option) version 3.

    This library is distributed in the hope that it will be useful,
    but WITHOUT ANY WARRANTY; without even the implied warranty of
    MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the GNU
    Library General Public License for more details.

    You should have received a copy of the GNU Library General Public License
    along with this library; see the file COPYING.LIB.  If not, write to
    the Free Software Foundation, Inc., 51 Franklin Street, Fifth Floor,
    Boston, MA 02110-1301, USA.

*/

#ifndef BINARYSTOREHELPER_H
#define BINARYSTOREHELPER_H

#include <assert.h>
#include "PndFTSCADef.h"
#include <cstdio>

// writes

template<typename T> static inline void BinaryStoreWrite( const T *mem, int count, FILE *f )
{
  const int written = std::fwrite( mem, sizeof( T ), count, f );
  assert( written == count ); UNUSED_PARAM1( written );
}

template<typename T> static inline void BinaryStoreWrite( const T &mem, FILE *f )
{
  const size_t written = std::fwrite( &mem, sizeof( T ), 1, f );
  assert( written == 1 ); UNUSED_PARAM1( written );
}

static inline void BinaryStoreWrite( const void *offsetPtr, const void *mem, FILE *f )
{
  const int offset = static_cast<const char *>( offsetPtr ) - static_cast<const char *>( mem );
  const size_t written = std::fwrite( &offset, sizeof( int ), 1, f );
  assert( written == 1 ); UNUSED_PARAM1( written );
}

// reads

template<typename T> static inline void BinaryStoreRead( T *mem, int count, FILE *f )
{
  const int read = std::fread( mem, sizeof( T ), count, f );
  assert( read == count ); UNUSED_PARAM1( read );
}

template<typename T> static inline void BinaryStoreRead( T &mem, FILE *f )
{
  const size_t read = std::fread( &mem, sizeof( T ), 1, f );
  assert( read == 1 ); UNUSED_PARAM1( read );
}

template<typename T>
static inline void BinaryStoreRead( T *&offsetPtr, char *mem, FILE *f )
{
  int offset;
  const size_t read = std::fread( &offset, sizeof( int ), 1, f );
  assert( read == 1 ); UNUSED_PARAM1( read );
  offsetPtr = reinterpret_cast<T *>( mem + offset );
}

#endif // BINARYSTOREHELPER_H