Mercurial > hg > orthanc

annotate Plugins/Samples/Common/DicomDatasetReader.cpp @ 2240:df47c45694ed

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improvement
author Sebastien Jodogne <s.jodogne@gmail.com>
date Fri, 16 Dec 2016 17:50:51 +0100
parents 4f0a9a61d905
children a3a65de1840f
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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 *
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6 * This program is free software: you can redistribute it and/or
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7 * modify it under the terms of the GNU General Public License as
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8 * published by the Free Software Foundation, either version 3 of the
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9 * License, or (at your option) any later version.
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10 *
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11 * In addition, as a special exception, the copyright holders of this
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12 * program give permission to link the code of its release with the
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13 * OpenSSL project's "OpenSSL" library (or with modified versions of it
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14 * that use the same license as the "OpenSSL" library), and distribute
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15 * the linked executables. You must obey the GNU General Public License
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16 * in all respects for all of the code used other than "OpenSSL". If you
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17 * modify file(s) with this exception, you may extend this exception to
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18 * your version of the file(s), but you are not obligated to do so. If
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19 * you do not wish to do so, delete this exception statement from your
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20 * version. If you delete this exception statement from all source files
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21 * in the program, then also delete it here.
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22 *
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23 * This program is distributed in the hope that it will be useful, but
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24 * WITHOUT ANY WARRANTY; without even the implied warranty of
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25 * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
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26 * General Public License for more details.
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27 *
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28 * You should have received a copy of the GNU General Public License
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29 * along with this program. If not, see <http://www.gnu.org/licenses/>.
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30 **/
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31
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32
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33 #include "DicomDatasetReader.h"
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34
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35 #include "OrthancPluginException.h"
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36
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37 #include <boost/lexical_cast.hpp>
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38
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39 namespace OrthancPlugins
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40 {
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41 // This function is copied-pasted from "../../../Core/Toolbox.cpp",
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42 // in order to avoid the dependency of plugins against the Orthanc core
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43 static std::string StripSpaces(const std::string& source)
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44 {
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45 size_t first = 0;
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46
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47 while (first < source.length() &&
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48 isspace(source[first]))
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49 {
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50 first++;
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51 }
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52
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53 if (first == source.length())
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54 {
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55 // String containing only spaces
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56 return "";
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57 }
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58
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59 size_t last = source.length();
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60 while (last > first &&
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61 isspace(source[last - 1]))
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62 {
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63 last--;
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64 }
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65
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66 assert(first <= last);
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67 return source.substr(first, last - first);
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68 }
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69
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70
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71 DicomDatasetReader::DicomDatasetReader(const IDicomDataset& dataset) :
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72 dataset_(dataset)
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73 {
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74 }
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75
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76
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77 std::string DicomDatasetReader::GetStringValue(const DicomPath& path,
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78 const std::string& defaultValue) const
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79 {
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80 std::string s;
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81 if (dataset_.GetStringValue(s, path))
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82 {
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83 return s;
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84 }
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85 else
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86 {
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87 return defaultValue;
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88 }
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89 }
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90
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91
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92 std::string DicomDatasetReader::GetMandatoryStringValue(const DicomPath& path) const
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93 {
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94 std::string s;
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95 if (dataset_.GetStringValue(s, path))
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96 {
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97 return s;
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98 }
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99 else
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100 {
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101 ORTHANC_PLUGINS_THROW_EXCEPTION(InexistentTag);
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102 }
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103 }
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104
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105
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106 template <typename T>
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107 static bool GetValueInternal(T& target,
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108 const IDicomDataset& dataset,
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109 const DicomPath& path)
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110 {
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111 try
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112 {
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113 std::string s;
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114
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115 if (dataset.GetStringValue(s, path))
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116 {
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117 target = boost::lexical_cast<T>(StripSpaces(s));
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118 return true;
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119 }
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120 else
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121 {
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122 return false;
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123 }
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124 }
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125 catch (boost::bad_lexical_cast&)
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126 {
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127 ORTHANC_PLUGINS_THROW_EXCEPTION(BadFileFormat);
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128 }
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129 }
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130
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131
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132 bool DicomDatasetReader::GetIntegerValue(int& target,
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133 const DicomPath& path) const
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134 {
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135 return GetValueInternal<int>(target, dataset_, path);
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136 }
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137
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138
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139 bool DicomDatasetReader::GetUnsignedIntegerValue(unsigned int& target,
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140 const DicomPath& path) const
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141 {
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142 int value;
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143
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144 if (!GetIntegerValue(value, path))
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145 {
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146 return false;
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147 }
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148 else if (value >= 0)
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149 {
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150 target = static_cast<unsigned int>(value);
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151 return true;
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152 }
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153 else
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154 {
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155 ORTHANC_PLUGINS_THROW_EXCEPTION(ParameterOutOfRange);
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156 }
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157 }
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158
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159
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160 bool DicomDatasetReader::GetFloatValue(float& target,
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161 const DicomPath& path) const
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162 {
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163 return GetValueInternal<float>(target, dataset_, path);
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164 }
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165
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166
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167 bool DicomDatasetReader::GetDoubleValue(double& target,
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168 const DicomPath& path) const
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169 {
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170 return GetValueInternal<double>(target, dataset_, path);
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171 }
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172 }