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4681
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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) 2017-2021 Osimis S.A., Belgium
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6 *
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7 * This program is free software: you can redistribute it and/or
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8 * modify it under the terms of the GNU Lesser General Public License
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9 * as published by the Free Software Foundation, either version 3 of
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10 * the License, or (at your option) any later version.
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11 *
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12 * This program is distributed in the hope that it will be useful, but
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13 * WITHOUT ANY WARRANTY; without even the implied warranty of
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14 * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
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15 * Lesser General Public License for more details.
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16 *
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17 * You should have received a copy of the GNU Lesser General Public
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18 * License along with this program. If not, see
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19 * <http://www.gnu.org/licenses/>.
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20 **/
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21
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22
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23 #include "../PrecompiledHeaders.h"
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24 #include "DicomPath.h"
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25
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26
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27 #if !defined(ORTHANC_ENABLE_DCMTK)
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28 # error Macro ORTHANC_ENABLE_DCMTK must be defined
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29 #endif
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30
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31 #if ORTHANC_ENABLE_DCMTK == 1
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32 # include "../DicomParsing/FromDcmtkBridge.h"
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33 #endif
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34
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35 #include "../OrthancException.h"
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36 #include "../Toolbox.h"
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37
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38 #include <boost/lexical_cast.hpp>
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39
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40
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41 namespace Orthanc
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42 {
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43 DicomPath::PrefixItem::PrefixItem(DicomTag tag,
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44 bool isUniversal,
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45 size_t index) :
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46 tag_(tag),
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47 isUniversal_(isUniversal),
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48 index_(index)
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49 {
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50 }
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51
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52
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53 size_t DicomPath::PrefixItem::GetIndex() const
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54 {
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55 if (isUniversal_)
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56 {
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57 throw OrthancException(ErrorCode_BadSequenceOfCalls);
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58 }
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59 else
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60 {
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61 return index_;
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62 }
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63 }
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64
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65
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66 DicomTag DicomPath::ParseTag(const std::string& token)
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67 {
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68 DicomTag tag(0,0);
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69
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70 if (token[0] == '(' &&
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71 token[token.size() - 1] == ')')
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72 {
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73 std::string hex = token.substr(1, token.size() - 2);
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74 if (!DicomTag::ParseHexadecimal(tag, hex.c_str()))
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75 {
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76 throw OrthancException(ErrorCode_UnknownDicomTag, "Cannot parse tag: " + token);
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77 }
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78 }
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79 else
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80 {
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81 #if ORTHANC_ENABLE_DCMTK == 1
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82 tag = FromDcmtkBridge::ParseTag(token);
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83 #else
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84 if (!DicomTag::ParseHexadecimal(tag, token.c_str()))
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85 {
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86 throw OrthancException(ErrorCode_UnknownDicomTag, "Cannot parse tag without DCMTK: " + token);
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87 }
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88 #endif
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89 }
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90
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91 return tag;
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92 }
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93
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94
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95 const DicomPath::PrefixItem& DicomPath::GetLevel(size_t i) const
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96 {
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97 if (i >= prefix_.size())
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98 {
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99 throw OrthancException(ErrorCode_ParameterOutOfRange);
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100 }
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101 else
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102 {
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103 return prefix_[i];
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104 }
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105 }
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106
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107
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108 DicomPath::DicomPath(const Orthanc::DicomTag& sequence,
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109 size_t index,
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110 const Orthanc::DicomTag& tag) :
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111 finalTag_(tag)
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112 {
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113 AddIndexedTagToPrefix(sequence, index);
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114 }
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115
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116
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117 DicomPath::DicomPath(const Orthanc::DicomTag& sequence1,
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118 size_t index1,
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119 const Orthanc::DicomTag& sequence2,
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120 size_t index2,
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121 const Orthanc::DicomTag& tag) :
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122 finalTag_(tag)
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123 {
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124 AddIndexedTagToPrefix(sequence1, index1);
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125 AddIndexedTagToPrefix(sequence2, index2);
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126 }
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127
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128
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129 DicomPath::DicomPath(const Orthanc::DicomTag& sequence1,
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130 size_t index1,
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131 const Orthanc::DicomTag& sequence2,
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132 size_t index2,
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133 const Orthanc::DicomTag& sequence3,
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134 size_t index3,
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135 const Orthanc::DicomTag& tag) :
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136 finalTag_(tag)
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137 {
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138 AddIndexedTagToPrefix(sequence1, index1);
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139 AddIndexedTagToPrefix(sequence2, index2);
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140 AddIndexedTagToPrefix(sequence3, index3);
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141 }
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142
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143
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144 void DicomPath::AddIndexedTagToPrefix(const Orthanc::DicomTag& tag,
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145 size_t index)
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146 {
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147 prefix_.push_back(PrefixItem::CreateIndexed(tag, index));
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148 }
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149
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150
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151 void DicomPath::AddUniversalTagToPrefix(const Orthanc::DicomTag& tag)
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152 {
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153 prefix_.push_back(PrefixItem::CreateUniversal(tag));
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154 }
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155
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156
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157 std::string DicomPath::Format() const
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158 {
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159 std::string s;
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160
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161 for (size_t i = 0; i < prefix_.size(); i++)
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162 {
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163 s += "(" + prefix_[i].GetTag().Format() + ")";
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164
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165 if (prefix_[i].IsUniversal())
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166 {
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167 s += "[*].";
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168 }
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169 else
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170 {
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171 s += "[" + boost::lexical_cast<std::string>(prefix_[i].GetIndex()) + "].";
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172 }
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173 }
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174
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175 return s + "(" + finalTag_.Format() + ")";
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176 }
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177
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178
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179 DicomPath DicomPath::Parse(const std::string& s,
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180 bool allowUniversal)
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181 {
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182 std::vector<std::string> tokens;
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183 Toolbox::TokenizeString(tokens, s, '.');
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184
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185 if (tokens.empty())
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186 {
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187 throw OrthancException(ErrorCode_ParameterOutOfRange, "Empty path to DICOM tags");
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188 }
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189
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190 const DicomTag finalTag = ParseTag(Toolbox::StripSpaces(tokens[tokens.size() - 1]));
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191
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192 DicomPath path(finalTag);
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193
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194 for (size_t i = 0; i < tokens.size() - 1; i++)
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195 {
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196 size_t pos = tokens[i].find('[');
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197 if (pos == std::string::npos)
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198 {
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199 throw OrthancException(ErrorCode_ParameterOutOfRange, "Parent path doesn't contain an index");
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200 }
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201 else
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202 {
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203 const std::string left = Orthanc::Toolbox::StripSpaces(tokens[i].substr(0, pos));
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204 const std::string right = Orthanc::Toolbox::StripSpaces(tokens[i].substr(pos + 1));
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205
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206 if (left.empty())
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207 {
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208 throw OrthancException(ErrorCode_ParameterOutOfRange, "Parent path doesn't contain a tag");
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209 }
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210 else if (right.empty() ||
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211 right[right.size() - 1] != ']')
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212 {
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213 throw OrthancException(ErrorCode_ParameterOutOfRange, "Parent path doesn't contain the end of the index");
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214 }
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215 else
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216 {
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217 DicomTag tag = ParseTag(left);
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218
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219 try
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220 {
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221 std::string s = Toolbox::StripSpaces(right.substr(0, right.size() - 1));
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222 if (s == "*")
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223 {
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224 if (allowUniversal)
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225 {
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226 path.AddUniversalTagToPrefix(tag);
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227 }
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228 else
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229 {
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230 throw OrthancException(ErrorCode_ParameterOutOfRange, "Cannot create an universal parent path");
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231 }
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232 }
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233 else
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234 {
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235 int index = boost::lexical_cast<int>(s);
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236 if (index < 0)
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237 {
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238 throw OrthancException(ErrorCode_ParameterOutOfRange, "Negative index in parent path: " + s);
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239 }
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240 else
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241 {
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242 path.AddIndexedTagToPrefix(tag, static_cast<size_t>(index));
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243 }
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244 }
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245 }
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246 catch (boost::bad_lexical_cast&)
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247 {
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248 throw OrthancException(ErrorCode_ParameterOutOfRange, "Not a valid index in parent path: [" + right);
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249 }
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250 }
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251 }
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252 }
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253
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254 return path;
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255 }
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256 }
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