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// Copyright (C) 2005 Davis E. King (davis@dlib.net)
// License: Boost Software License See LICENSE.txt for the full license.
#undef DLIB_CRC32_KERNEl_ABSTRACT_
#ifdef DLIB_CRC32_KERNEl_ABSTRACT_
#include "../algs.h"
#include <string>
#include <vector>
namespace dlib
{
class crc32
{
/*!
INITIAL VALUE
The current checksum covers zero bytes.
get_checksum() == 0x00000000
WHAT THIS OBJECT REPRESENTS
This object represents the CRC32 algorithm for calculating
checksums.
!*/
public:
crc32 (
);
/*!
ensures
- #*this is properly initialized
!*/
crc32 (
const std::string& item
);
/*!
ensures
- #*this is properly initialized
- calls this->add(item).
(i.e. Using this constructor is the same as using the default
constructor and then calling add() on item)
!*/
crc32 (
const std::vector<char>& item
);
/*!
ensures
- #*this is properly initialized
- calls this->add(item).
(i.e. Using this constructor is the same as using the default
constructor and then calling add() on item)
!*/
virtual ~crc32 (
);
/*!
ensures
- any resources associated with *this have been released
!*/
void clear(
);
/*!
ensures
- #*this has its initial value
!*/
void add (
unsigned char item
);
/*!
ensures
- #get_checksum() == The checksum of all items added to *this previously
concatenated with item.
!*/
void add (
const std::string& item
);
/*!
ensures
- #get_checksum() == The checksum of all items added to *this previously
concatenated with item.
!*/
void add (
const std::vector<char>& item
);
/*!
ensures
- #get_checksum() == The checksum of all items added to *this previously
concatenated with item.
!*/
unsigned long get_checksum (
) const;
/*!
ensures
- returns the current checksum
!*/
operator unsigned long (
) const;
/*!
ensures
- returns get_checksum()
!*/
void swap (
crc32& item
);
/*!
ensures
- swaps *this and item
!*/
};
void swap (
crc32& a,
crc32& b
) { a.swap(b); }
/*!
provides a global swap function
!*/
}
#endif // DLIB_CRC32_KERNEl_ABSTRACT_
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