Mercurial > hg > orthanc
annotate OrthancFramework/Sources/HttpServer/CStringMatcher.cpp @ 5338:78c59b02b121
accept parameters are now provided to HttpContentNegociation::IHandler::Handle()
author | Sebastien Jodogne <s.jodogne@gmail.com> |
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date | Wed, 28 Jun 2023 08:29:43 +0200 |
parents | 0ea402b4d901 |
children | 48b8dae6dc77 |
rev | line source |
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1 /** |
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2 * Orthanc - A Lightweight, RESTful DICOM Store |
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3 * Copyright (C) 2012-2016 Sebastien Jodogne, Medical Physics |
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4 * Department, University Hospital of Liege, Belgium |
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5 * Copyright (C) 2017-2023 Osimis S.A., Belgium |
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6 * Copyright (C) 2021-2023 Sebastien Jodogne, ICTEAM UCLouvain, Belgium |
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7 * |
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8 * This program is free software: you can redistribute it and/or |
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9 * modify it under the terms of the GNU Lesser General Public License |
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10 * as published by the Free Software Foundation, either version 3 of |
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11 * the License, or (at your option) any later version. |
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12 * |
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13 * This program is distributed in the hope that it will be useful, but |
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14 * WITHOUT ANY WARRANTY; without even the implied warranty of |
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15 * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU |
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16 * Lesser General Public License for more details. |
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17 * |
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18 * You should have received a copy of the GNU Lesser General Public |
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19 * License along with this program. If not, see |
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20 * <http://www.gnu.org/licenses/>. |
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21 **/ |
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22 |
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23 |
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24 #include "../PrecompiledHeaders.h" |
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25 #include "CStringMatcher.h" |
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26 |
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27 #include "../OrthancException.h" |
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28 |
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29 #include <boost/algorithm/searching/boyer_moore.hpp> |
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30 |
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31 namespace Orthanc |
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32 { |
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33 class CStringMatcher::Search : public boost::noncopyable |
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34 { |
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35 private: |
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36 typedef boost::algorithm::boyer_moore<const char*> Algorithm; |
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37 |
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38 Algorithm algorithm_; |
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39 |
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40 public: |
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41 // WARNING - The lifetime of "pattern_" must be larger than |
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42 // "search_", as the latter internally keeps a pointer to "pattern" (*) |
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43 explicit Search(const std::string& pattern) : |
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44 algorithm_(pattern.c_str(), pattern.c_str() + pattern.size()) |
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45 { |
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46 } |
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47 |
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48 const char* Apply(const char* start, |
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49 const char* end) const |
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50 { |
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51 #if BOOST_VERSION >= 106200 |
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52 return algorithm_(start, end).first; |
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53 #else |
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54 return algorithm_(start, end); |
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55 #endif |
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56 } |
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57 }; |
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58 |
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59 |
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60 |
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61 CStringMatcher::CStringMatcher(const std::string& pattern) : |
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62 pattern_(pattern), |
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64 matchBegin_(NULL), | |
65 matchEnd_(NULL) | |
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66 { |
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67 // WARNING - Don't use "pattern" (local variable, will be |
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68 // destroyed once exiting the constructor) but "pattern_" |
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69 // (variable member, will last as long as the algorithm), |
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70 // otherwise lifetime is bad! (*) |
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71 search_.reset(new Search(pattern_)); |
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72 } |
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73 |
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74 const std::string& CStringMatcher::GetPattern() const |
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75 { |
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76 return pattern_; |
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77 } |
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78 |
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79 bool CStringMatcher::IsValid() const |
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80 { |
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81 return valid_; |
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82 } |
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83 |
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84 |
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85 bool CStringMatcher::Apply(const char* start, |
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86 const char* end) |
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87 { |
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88 assert(search_.get() != NULL); |
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89 |
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90 if (start > end) |
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91 { |
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92 throw OrthancException(ErrorCode_ParameterOutOfRange); |
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93 } |
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94 |
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95 matchBegin_ = search_->Apply(start, end); |
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96 |
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97 if (matchBegin_ == end) |
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98 { |
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99 valid_ = false; |
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100 } |
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101 else |
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102 { |
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103 matchEnd_ = matchBegin_ + pattern_.size(); |
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104 assert(matchEnd_ <= end); |
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105 valid_ = true; |
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106 } |
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107 |
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108 return valid_; |
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109 } |
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110 |
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111 |
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112 bool CStringMatcher::Apply(const std::string& corpus) |
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113 { |
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114 if (corpus.empty()) |
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115 { |
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116 return false; |
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117 } |
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118 else |
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119 { |
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120 return Apply(corpus.c_str(), corpus.c_str() + corpus.size()); |
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121 } |
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122 } |
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123 |
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124 |
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125 const char* CStringMatcher::GetMatchBegin() const |
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126 { |
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127 if (valid_) |
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128 { |
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129 return matchBegin_; |
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130 } |
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131 else |
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132 { |
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133 throw OrthancException(ErrorCode_BadSequenceOfCalls); |
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134 } |
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135 } |
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136 |
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137 |
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138 const char* CStringMatcher::GetMatchEnd() const |
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139 { |
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140 if (valid_) |
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141 { |
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142 return matchEnd_; |
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143 } |
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144 else |
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145 { |
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146 throw OrthancException(ErrorCode_BadSequenceOfCalls); |
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147 } |
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148 } |
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149 } |