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