libcommonc++  0.7
Checksum.h++
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1 /* ---------------------------------------------------------------------------
2  commonc++ - A C++ Common Class Library
3  Copyright (C) 2005-2014 Mark A Lindner
4 
5  This file is part of commonc++.
6 
7  This library is free software; you can redistribute it and/or
8  modify it under the terms of the GNU Library General Public
9  License as published by the Free Software Foundation; either
10  version 2 of the License, or (at your option) any later version.
11 
12  This library is distributed in the hope that it will be useful,
13  but WITHOUT ANY WARRANTY; without even the implied warranty of
14  MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
15  Library General Public License for more details.
16 
17  You should have received a copy of the GNU Library General Public
18  License along with this library; if not, write to the Free
19  Software Foundation, Inc., 675 Mass Ave, Cambridge, MA 02139, USA.
20  ---------------------------------------------------------------------------
21 */
22 
23 #ifndef __ccxx_Checksum_hxx
24 #define __ccxx_Checksum_hxx
25 
26 #include <commonc++/Common.h++>
27 
28 namespace ccxx {
29 
35 class Checksum
36 {
37  public:
38 
40  virtual ~Checksum();
41 
48  virtual void update(const byte_t* buf, size_t len) = 0;
49 
55  uint32_t finish();
56 
58  void reset();
59 
60  protected:
61 
63  Checksum();
64 
66  uint32_t _sum;
67 
68  private:
69 
70  CCXX_COPY_DECLS(Checksum);
71 };
72 
73 } // namespace ccxx
74 
75 #endif // __ccxx_Checksum_hxx
virtual ~Checksum()
Destructor.
Definition: Checksum.c++:42
Checksum()
Constructor.
Definition: Checksum.c++:34
virtual void update(const byte_t *buf, size_t len)=0
Update the checksum with more data.
A base class for checksum generators.
Definition: Checksum.h++:35
void reset()
Reset the object for a new checksum.
Definition: Checksum.c++:49
uint32_t finish()
Finish generating the checksum.
Definition: Checksum.c++:57
uint32_t _sum
The current checksum value.
Definition: Checksum.h++:66
Definition: AllocationMap.c++:25
unsigned char byte_t
An unsigned 8-bit value.
Definition: Integers.h++:68