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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) 2017-2018 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 General Public License as
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9 * published by the Free Software Foundation, either version 3 of the
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10 * License, or (at your option) any later version.
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11 *
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12 * In addition, as a special exception, the copyright holders of this
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13 * program give permission to link the code of its release with the
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14 * OpenSSL project's "OpenSSL" library (or with modified versions of it
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15 * that use the same license as the "OpenSSL" library), and distribute
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16 * the linked executables. You must obey the GNU General Public License
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17 * in all respects for all of the code used other than "OpenSSL". If you
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18 * modify file(s) with this exception, you may extend this exception to
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19 * your version of the file(s), but you are not obligated to do so. If
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20 * you do not wish to do so, delete this exception statement from your
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21 * version. If you delete this exception statement from all source files
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22 * in the program, then also delete it here.
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23 *
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24 * This program is distributed in the hope that it will be useful, but
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25 * WITHOUT ANY WARRANTY; without even the implied warranty of
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26 * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
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27 * General Public License for more details.
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28 *
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29 * You should have received a copy of the GNU General Public License
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30 * along with this program. If not, see <http://www.gnu.org/licenses/>.
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31 **/
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32
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33
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34 #include "../PrecompiledHeaders.h"
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35 #include "DicomValue.h"
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36
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37 #include "../OrthancException.h"
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38 #include "../Toolbox.h"
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39
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116
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40 #include <boost/lexical_cast.hpp>
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41
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42 namespace Orthanc
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43 {
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44 DicomValue::DicomValue(const DicomValue& other) :
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45 type_(other.type_),
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46 content_(other.content_)
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47 {
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48 }
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49
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50
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51 DicomValue::DicomValue(const std::string& content,
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52 bool isBinary) :
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53 type_(isBinary ? Type_Binary : Type_String),
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54 content_(content)
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55 {
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56 }
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57
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58
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59 DicomValue::DicomValue(const char* data,
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60 size_t size,
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61 bool isBinary) :
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62 type_(isBinary ? Type_Binary : Type_String)
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63 {
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64 content_.assign(data, size);
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65 }
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66
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67
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68 const std::string& DicomValue::GetContent() const
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69 {
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70 if (type_ == Type_Null)
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71 {
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72 throw OrthancException(ErrorCode_BadParameterType);
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73 }
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74 else
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75 {
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76 return content_;
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77 }
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78 }
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79
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80
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81 DicomValue* DicomValue::Clone() const
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82 {
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83 return new DicomValue(*this);
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84 }
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85
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86
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41
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87 #if ORTHANC_ENABLE_BASE64 == 1
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88 void DicomValue::FormatDataUriScheme(std::string& target,
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89 const std::string& mime) const
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90 {
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91 Toolbox::EncodeBase64(target, GetContent());
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92 target.insert(0, "data:" + mime + ";base64,");
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93 }
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94 #endif
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95
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96
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97 template <typename T,
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98 bool allowSigned>
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99 static bool ParseValue(T& result,
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100 const DicomValue& source)
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101 {
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102 if (source.IsBinary() ||
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103 source.IsNull())
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104 {
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105 return false;
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106 }
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107
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108 try
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109 {
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110 std::string value = Toolbox::StripSpaces(source.GetContent());
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111 if (value.empty())
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112 {
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113 return false;
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114 }
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115
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116 if (!allowSigned &&
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117 value[0] == '-')
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118 {
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119 return false;
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120 }
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121
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122 result = boost::lexical_cast<T>(value);
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123 return true;
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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 return false;
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128 }
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129 }
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130
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131 bool DicomValue::ParseInteger32(int32_t& result) const
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132 {
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133 int64_t tmp;
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134 if (ParseValue<int64_t, true>(tmp, *this))
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135 {
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136 result = static_cast<int32_t>(tmp);
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137 return (tmp == static_cast<int64_t>(result)); // Check no overflow occurs
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138 }
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139 else
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140 {
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141 return false;
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142 }
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143 }
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144
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145 bool DicomValue::ParseInteger64(int64_t& result) const
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146 {
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147 return ParseValue<int64_t, true>(result, *this);
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148 }
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149
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150 bool DicomValue::ParseUnsignedInteger32(uint32_t& result) const
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151 {
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152 uint64_t tmp;
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153 if (ParseValue<uint64_t, false>(tmp, *this))
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154 {
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155 result = static_cast<uint32_t>(tmp);
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156 return (tmp == static_cast<uint64_t>(result)); // Check no overflow occurs
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157 }
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158 else
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159 {
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160 return false;
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161 }
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162 }
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163
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164 bool DicomValue::ParseUnsignedInteger64(uint64_t& result) const
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165 {
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166 return ParseValue<uint64_t, false>(result, *this);
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167 }
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168
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169 bool DicomValue::ParseFloat(float& result) const
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170 {
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171 return ParseValue<float, true>(result, *this);
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172 }
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173
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174 bool DicomValue::ParseDouble(double& result) const
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175 {
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176 return ParseValue<double, true>(result, *this);
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177 }
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178
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179 bool DicomValue::CopyToString(std::string& result,
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180 bool allowBinary) const
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181 {
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182 if (IsNull())
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183 {
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184 return false;
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185 }
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186 else if (IsBinary() && !allowBinary)
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187 {
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188 return false;
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189 }
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190 else
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191 {
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192 result.assign(content_);
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193 return true;
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194 }
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195 }
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196 }
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