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Cleanup OSTC label and removed url The computer type will now show OSTC 4/5 instead of only 4. The url has been removed because it is no longer maintained. The ui header have been deleted because they are generated files shich should not be under version controll. Delete locally if you want to force an update of the dialog layout.
author Ideenmodellierer
date Sun, 30 Nov 2025 18:37:32 +0100
parents 0b3630a29ad8
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1 //////////////////////////////////////////////////////////////////////////////
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2 /// \file Adler16.h
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3 /// \brief Adler checksum, on 2x8 bits.
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4 /// \author JD Gascuel.
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5 /// \copyright (c) 2011-2016 JD Gascuel. All rights reserved.
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6 /// $Id$
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7 //////////////////////////////////////////////////////////////////////////////
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8 //
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9 // BSD 2-Clause License:
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10 //
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11 // Redistribution and use in source and binary forms, with or without
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12 // modification, are permitted provided that the following conditions
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13 // are met:
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14 //
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15 // 1. Redistributions of source code must retain the above copyright notice,
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16 // this list of conditions and the following disclaimer.
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17 //
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18 // 2. Redistributions in binary form must reproduce the above copyright notice,
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19 // this list of conditions and the following disclaimer in the documentation
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20 // and/or other materials provided with the distribution.
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21 //
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22 // THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS "AS IS"
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23 // AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
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24 // IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
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25 // ARE DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT HOLDER OR CONTRIBUTORS BE
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26 // LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR
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27 // CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF
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28 // SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS
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29 // INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN
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30 // CONTRACT, STRICT LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE)
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31 // ARISING IN ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF
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32 // THE POSSIBILITY OF SUCH DAMAGE.
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33 //
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34 //////////////////////////////////////////////////////////////////////////////
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35 // HISTORY
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36 // 2015-07-31 Creation.
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37 // 2016-05-24 jDG: BSD-2 version.
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38
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39 #ifndef ADLER16_H
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40 #define ADLER16_H
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41
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42 #include <QByteArray>
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43
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44 //////////////////////////////////////////////////////////////////////////////
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45 /// \brief Addler checksum, on 2xN bits.
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46 template <typename T>
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47 class AdlerTemplate
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48 {
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49 T _a, _b;
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50
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51 public:
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52 //------------------------------------------------------------------------
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53 /// \brief Initialize checksum with a given seed.
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54 inline AdlerTemplate(T a, T b)
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55 : _a(a), _b(b)
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56 {}
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57
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58 //------------------------------------------------------------------------
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59 /// \brief Re-initialize checksum with a given seed.
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60 inline void reset(T a, T b)
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61 { _a = a;
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62 _b = b;
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63 }
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64
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65 //------------------------------------------------------------------------
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66 /// \brief Hash a single byte/word
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67 inline void add(int c)
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68 {
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69 _a += (T)(c & 0xFF);
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70 _b += _a;
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71 }
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72
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73 //------------------------------------------------------------------------
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74 /// \brief Hash a block of bytes.
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75 /// \note \a size is always in BYTE units.
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76 inline void add(const void* buffer, size_t size)
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77 {
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78 for(size_t i = 0; i<size; ++i)
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79 add( ((const unsigned char*)buffer)[i] );
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80 }
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81
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82 //------------------------------------------------------------------------
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83 /// \brief Hash all the byte/words for a Qt buffer.
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84 inline void add(const QByteArray& buffer)
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85 {
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86 add(buffer.data(), buffer.size());
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87 }
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88
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89 //------------------------------------------------------------------------
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90 /// \brief Returns hash result.
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91 inline T a() const { return _a; }
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92 inline T b() const { return _b; }
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93
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94 //------------------------------------------------------------------------
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95 /// Check Hash result.
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96 /// \returns TRUE if has do match the given values.
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97 inline bool check(T a, T b)
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98 {
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99 return (_a == a) && (_b == b);
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100 }
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101 };
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102
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103 /// \brief 2x8 bits implementation.
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104 typedef AdlerTemplate<unsigned char> Adler16;
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105
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106 /// \brief 2x16 bits implementation.
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107 typedef AdlerTemplate<unsigned short> Adler32;
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108
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109 #endif // ADDLER16_H
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110