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// * This file is part of the COLOBOT source code
// * Copyright (C) 2012, Polish Portal of Colobot (PPC)
// *
// * This program is free software: you can redistribute it and/or modify
// * it under the terms of the GNU General Public License as published by
// * the Free Software Foundation, either version 3 of the License, or
// * (at your option) any later version.
// *
// * This program 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 General Public License for more details.
// *
// * You should have received a copy of the GNU General Public License
// * along with this program. If not, see http://www.gnu.org/licenses/.
// ioutils.h
#pragma once
#include <iostream>
namespace IOUtils {
//! Writes a binary number to output stream
/**
\c T is a numeric type (int, unsigned int, etc.)
\c N is number of bytes
Write order is little-endian */
template<int N, typename T>
void WriteBinary(T value, std::ostream &ostr)
{
for (int i = 0; i < N; ++i)
{
unsigned char byte = (value >> (i*8)) & 0xFF;
ostr.write((char*)&byte, 1);
}
}
//! Reads a binary number from input stream
/**
\c T is a numeric type (int, unsigned int, etc.)
\c N is number of bytes
Read order is little-endian */
template<int N, typename T>
T ReadBinary(std::istream &istr)
{
T value = 0;
for (int i = 0; i < N; ++i)
{
unsigned char byte = 0;
istr.read((char*)&byte, 1);
value |= byte << (i*8);
}
return value;
}
//! Writes a binary 32-bit float to output stream
/**
Write order is little-endian
NOTE: code is probably not portable as there are platforms with other float representations. */
void WriteBinaryFloat(float value, std::ostream &ostr)
{
unsigned int iValue = *( (unsigned int*)( (void*)(&value) ) );
IOUtils::WriteBinary<4, unsigned int>(iValue, ostr);
}
//! Reads a binary 32-bit float from input stream
/**
Read order is little-endian
NOTE: code is probably not portable as there are platforms with other float representations. */
float ReadBinaryFloat(std::istream &istr)
{
unsigned int iValue = IOUtils::ReadBinary<4, unsigned int>(istr);
float result = *( (float*)( (void*)(&iValue) ) );
return result;
}
}; // namespace IOUtils
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