letype.h

Go to the documentation of this file.

// This file is part of par2cmdline (a PAR 2.0 compatible file verification and
// repair tool). See https://parchive.sourceforge.net for details of PAR 2.0.
//
// Copyright (c) 2003 Peter Brian Clements
//
// par2cmdline 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 2 of the License, or
// (at your option) any later version.
//
// par2cmdline 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, write to the Free Software
// Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA 02111-1307 USA

#ifndef __LETYPE_H__
#define __LETYPE_H__

#if __BYTE_ORDER == __LITTLE_ENDIAN

typedef u16 leu16;
typedef u32 leu32;
typedef u64 leu64;

#else

class leu16
{
public:
  leu16(void);

  leu16(const leu16 &other);
  leu16& operator=(const leu16 &other);

  leu16(const u16 &other);
  leu16& operator=(const u16 &other);

  operator u16(void) const;

protected:
  u16 value;
};

inline leu16::leu16(void)
{
}

inline leu16::leu16(const leu16 &other)
: value(other.value)
{
}

inline leu16& leu16::operator =(const leu16 &other)
{
  value = other.value;
  return *this;
}

inline leu16::leu16(const u16 &other)
{
  ((unsigned char*)&value)[0] = (unsigned char)((other >> 0) & 0xff);
  ((unsigned char*)&value)[1] = (unsigned char)((other >> 8) & 0xff);
}

inline leu16& leu16::operator=(const u16 &other)
{
  ((unsigned char*)&value)[0] = (unsigned char)((other >> 0) & 0xff);
  ((unsigned char*)&value)[1] = (unsigned char)((other >> 8) & 0xff);

  return *this;
}

inline leu16::operator u16(void) const
{
  return ((unsigned char*)&value)[0] << 0 |
         ((unsigned char*)&value)[1] << 8;
}


class leu32
{
public:
  leu32(void);

  leu32(const leu32 &other);
  leu32& operator=(const leu32 &other);

  leu32(const u32 &other);
  leu32& operator=(const u32 &other);

  operator u32(void) const;

protected:
  u32 value;
};

inline leu32::leu32(void)
{
}

inline leu32::leu32(const leu32 &other)
: value(other.value)
{
}

inline leu32& leu32::operator =(const leu32 &other)
{
  value = other.value;
  return *this;
}

inline leu32::leu32(const u32 &other)
{
  ((unsigned char*)&value)[0] = (unsigned char)((other >> 0) & 0xff);
  ((unsigned char*)&value)[1] = (unsigned char)((other >> 8) & 0xff);
  ((unsigned char*)&value)[2] = (unsigned char)((other >> 16) & 0xff);
  ((unsigned char*)&value)[3] = (unsigned char)((other >> 24) & 0xff);
}

inline leu32& leu32::operator=(const u32 &other)
{
  ((unsigned char*)&value)[0] = (unsigned char)((other >> 0) & 0xff);
  ((unsigned char*)&value)[1] = (unsigned char)((other >> 8) & 0xff);
  ((unsigned char*)&value)[2] = (unsigned char)((other >> 16) & 0xff);
  ((unsigned char*)&value)[3] = (unsigned char)((other >> 24) & 0xff);

  return *this;
}

inline leu32::operator u32(void) const
{
  return ((unsigned char*)&value)[0] << 0 |
         ((unsigned char*)&value)[1] << 8 |
         ((unsigned char*)&value)[2] << 16 |
         ((unsigned char*)&value)[3] << 24;
}


class leu64
{
public:
  leu64(void);

  leu64(const leu64 &other);
  leu64& operator=(const leu64 &other);

  leu64(const u64 &other);
  leu64& operator=(const u64 &other);

  operator u64(void) const;

protected:
  u64 value;
};

inline leu64::leu64(void)
{
}

inline leu64::leu64(const leu64 &other)
: value(other.value)
{
}

inline leu64& leu64::operator =(const leu64 &other)
{
  value = other.value;
  return *this;
}

inline leu64::leu64(const u64 &other)
{
  ((unsigned char*)&value)[0] = (unsigned char)((other >> 0) & 0xff);
  ((unsigned char*)&value)[1] = (unsigned char)((other >> 8) & 0xff);
  ((unsigned char*)&value)[2] = (unsigned char)((other >> 16) & 0xff);
  ((unsigned char*)&value)[3] = (unsigned char)((other >> 24) & 0xff);
  ((unsigned char*)&value)[4] = (unsigned char)((other >> 32) & 0xff);
  ((unsigned char*)&value)[5] = (unsigned char)((other >> 40) & 0xff);
  ((unsigned char*)&value)[6] = (unsigned char)((other >> 48) & 0xff);
  ((unsigned char*)&value)[7] = (unsigned char)((other >> 56) & 0xff);
}

inline leu64& leu64::operator=(const u64 &other)
{
  ((unsigned char*)&value)[0] = (unsigned char)((other >> 0) & 0xff);
  ((unsigned char*)&value)[1] = (unsigned char)((other >> 8) & 0xff);
  ((unsigned char*)&value)[2] = (unsigned char)((other >> 16) & 0xff);
  ((unsigned char*)&value)[3] = (unsigned char)((other >> 24) & 0xff);
  ((unsigned char*)&value)[4] = (unsigned char)((other >> 32) & 0xff);
  ((unsigned char*)&value)[5] = (unsigned char)((other >> 40) & 0xff);
  ((unsigned char*)&value)[6] = (unsigned char)((other >> 48) & 0xff);
  ((unsigned char*)&value)[7] = (unsigned char)((other >> 56) & 0xff);

  return *this;
}

inline leu64::operator u64(void) const
{
  return (u64)(((unsigned char*)&value)[0]) << 0 |
         (u64)(((unsigned char*)&value)[1]) << 8 |
         (u64)(((unsigned char*)&value)[2]) << 16 |
         (u64)(((unsigned char*)&value)[3]) << 24 |
         (u64)(((unsigned char*)&value)[4]) << 32 |
         (u64)(((unsigned char*)&value)[5]) << 40 |
         (u64)(((unsigned char*)&value)[6]) << 48 |
         (u64)(((unsigned char*)&value)[7]) << 56;
}

#endif

#endif // __LETYPE_H__

---