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annotate Sources/PythonObject.cpp @ 79:068551520123

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New Python function: "orthanc.RegisterStorageArea()"
author Sebastien Jodogne <s.jodogne@gmail.com>
date Thu, 12 Aug 2021 17:52:17 +0200
parents 0b3ef425db31
children eb6ac5a801d1
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1 /**
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2 * Python plugin for Orthanc
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23f3099bed47 upgrade to year 2021
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3 * Copyright (C) 2020-2021 Osimis S.A., Belgium
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4 *
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5 * This program is free software: you can redistribute it and/or
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6 * modify it under the terms of the GNU Affero General Public License
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7 * as published by the Free Software Foundation, either version 3 of
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8 * the License, or (at your option) any later version.
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9 *
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10 * This program is distributed in the hope that it will be useful, but
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11 * WITHOUT ANY WARRANTY; without even the implied warranty of
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12 * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
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13 * Affero General Public License for more details.
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14 *
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15 * You should have received a copy of the GNU Affero General Public License
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16 * along with this program. If not, see <http://www.gnu.org/licenses/>.
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17 **/
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19
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20 #include "PythonObject.h"
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21
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22 #include "../Resources/Orthanc/Plugins/OrthancPluginCppWrapper.h"
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23 #include "PythonLock.h"
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26 PythonObject::PythonObject(PythonLock& lock,
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27 PyObject *object,
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28 bool borrowed) :
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29 lock_(lock),
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30 object_(object),
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31 borrowed_(borrowed)
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32 {
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33 }
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35
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36 PythonObject::~PythonObject()
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37 {
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38 if (!borrowed_ &&
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39 object_ != NULL)
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40 {
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41 Py_DECREF(object_);
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42 }
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43 }
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46 PyObject* PythonObject::GetPyObject() const
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47 {
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48 if (object_ == NULL)
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49 {
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50 // "IsValid()" should have been called
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51 ORTHANC_PLUGINS_THROW_EXCEPTION(BadSequenceOfCalls);
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52 }
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53 else
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54 {
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55 return object_;
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56 }
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57 }
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59
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60 PythonObject* PythonObject::GetAttribute(const std::string& name)
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61 {
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62 return new PythonObject(lock_, PyObject_GetAttrString(GetPyObject(), name.c_str()));
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63 }
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65
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66 bool PythonObject::ToUtf8String(std::string& target,
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67 PyObject* value)
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68 {
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69 if (value == NULL)
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70 {
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71 ORTHANC_PLUGINS_THROW_EXCEPTION(NullPointer);
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72 }
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73 else if (PyUnicode_Check(value))
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74 {
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75 PythonObject encoded(lock_, PyUnicode_AsEncodedString(value, "utf-8", "replace"));
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76 if (encoded.IsValid())
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77 {
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78 target = PyBytes_AS_STRING(encoded.GetPyObject());
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79 return true;
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80 }
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81 else
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82 {
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83 target.clear();
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84 return false;
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85 }
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86 }
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87 #if PY_MAJOR_VERSION == 2
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88 else if (PyString_Check(value))
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89 {
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90 target = PyString_AS_STRING(value);
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91 return true;
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92 }
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93 #endif
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94 else
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95 {
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96 target.clear();
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97 return false;
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98 }
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99 }
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100
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101
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102 void PythonObject::Format(std::ostream& os)
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103 {
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104 std::string s;
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105 if (object_ == NULL)
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106 {
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107 os << "Can't format a NULL Python object" << std::endl;
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108 }
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109 else if (ToUtf8String(s))
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110 {
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111 os << s;
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112 }
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113 else
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114 {
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115 os << "Can't format this Python object" << std::endl;
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116 }
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117 }
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118
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119
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120 PyObject* PythonObject::Release()
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121 {
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122 if (!borrowed_ &&
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123 object_ != NULL)
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124 {
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125 PyObject* value = object_;
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126 object_ = NULL;
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127 return value;
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128 }
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129 else
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130 {
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131 OrthancPlugins::LogError("Cannot release a NULL or borrowed reference");
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132 ORTHANC_PLUGINS_THROW_EXCEPTION(InternalError);
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133 }
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134 }
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135
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136
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137 void PythonObject::ConvertToJson(Json::Value& target,
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138 PyObject* source)
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139 {
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140 // WARNING: The order *is* important!
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141 if (source == Py_None)
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142 {
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143 target = Json::nullValue;
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144 }
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145 else if (PyBool_Check(source))
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146 {
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147 target = (PyObject_IsTrue(source) ? true : false);
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148 }
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149 else if (PyLong_Check(source))
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150 {
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151 target = static_cast<int32_t>(PyLong_AsLong(source));
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152 }
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153 else if (PyFloat_Check(source))
3dc37a5af1b1 new method PythonObject::ConvertToJson()
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154 {
3dc37a5af1b1 new method PythonObject::ConvertToJson()
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155 target = PyFloat_AsDouble(source);
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156 }
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157 else if (PyNumber_Check(source))
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158 {
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159 PythonObject asLong(lock_, PyNumber_Long(source));
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160 if (PyLong_Check(asLong.GetPyObject()))
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161 {
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162 target = static_cast<int32_t>(PyLong_AsLong(asLong.GetPyObject()));
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163 }
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164 else
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165 {
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166 ORTHANC_PLUGINS_THROW_EXCEPTION(InternalError);
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167 }
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168 }
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169 else if (PyUnicode_Check(source))
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170 {
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171 std::string s;
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172 if (ToUtf8String(s, source))
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173 {
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174 target = s;
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175 }
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176 else
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177 {
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178 ORTHANC_PLUGINS_THROW_EXCEPTION(NotImplemented);
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179 }
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180 }
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181 #if PY_MAJOR_VERSION == 2
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182 else if (PyString_Check(source))
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183 {
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184 target = PyString_AS_STRING(source);
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185 }
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186 #endif
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187 else if (PySequence_Check(source)) // tuples or lists
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188 {
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189 Py_ssize_t size = PySequence_Size(source);
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190
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191 if (size < 0)
3dc37a5af1b1 new method PythonObject::ConvertToJson()
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192 {
3dc37a5af1b1 new method PythonObject::ConvertToJson()
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193 ORTHANC_PLUGINS_THROW_EXCEPTION(InternalError);
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194 }
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195
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196 target = Json::arrayValue;
3dc37a5af1b1 new method PythonObject::ConvertToJson()
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197 for (Py_ssize_t i = 0; i < size; i++)
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198 {
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199 Json::Value item;
3dc37a5af1b1 new method PythonObject::ConvertToJson()
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200 ConvertToJson(item, PySequence_GetItem(source, i));
3dc37a5af1b1 new method PythonObject::ConvertToJson()
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201 target.append(item);
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202 }
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203 }
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204 else if (PyMapping_Check(source)) // dictionaries
3dc37a5af1b1 new method PythonObject::ConvertToJson()
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205 {
3dc37a5af1b1 new method PythonObject::ConvertToJson()
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206 PythonObject items(lock_, PyMapping_Items(source));
3dc37a5af1b1 new method PythonObject::ConvertToJson()
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207
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208 Py_ssize_t size = PySequence_Size(items.GetPyObject());
3dc37a5af1b1 new method PythonObject::ConvertToJson()
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209
3dc37a5af1b1 new method PythonObject::ConvertToJson()
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210 if (size < 0)
3dc37a5af1b1 new method PythonObject::ConvertToJson()
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211 {
3dc37a5af1b1 new method PythonObject::ConvertToJson()
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212 ORTHANC_PLUGINS_THROW_EXCEPTION(InternalError);
3dc37a5af1b1 new method PythonObject::ConvertToJson()
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213 }
3dc37a5af1b1 new method PythonObject::ConvertToJson()
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214
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215 for (Py_ssize_t i = 0; i < size; i++)
3dc37a5af1b1 new method PythonObject::ConvertToJson()
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216 {
3dc37a5af1b1 new method PythonObject::ConvertToJson()
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217 PyObject* pair = PySequence_GetItem(items.GetPyObject(), i);
3dc37a5af1b1 new method PythonObject::ConvertToJson()
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218
3dc37a5af1b1 new method PythonObject::ConvertToJson()
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219 std::string key;
3dc37a5af1b1 new method PythonObject::ConvertToJson()
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220 Json::Value value;
3dc37a5af1b1 new method PythonObject::ConvertToJson()
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221 if (pair != NULL &&
3dc37a5af1b1 new method PythonObject::ConvertToJson()
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222 ToUtf8String(key, PySequence_GetItem(pair, 0)))
3dc37a5af1b1 new method PythonObject::ConvertToJson()
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223 {
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224 ConvertToJson(value, PySequence_GetItem(pair, 1));
3dc37a5af1b1 new method PythonObject::ConvertToJson()
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225 target[key] = value;
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226 }
3dc37a5af1b1 new method PythonObject::ConvertToJson()
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227 else
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228 {
3dc37a5af1b1 new method PythonObject::ConvertToJson()
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229 ORTHANC_PLUGINS_THROW_EXCEPTION(InternalError);
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230 }
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231 }
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232 }
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233 else
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234 {
3dc37a5af1b1 new method PythonObject::ConvertToJson()
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235 ORTHANC_PLUGINS_THROW_EXCEPTION(NotImplemented);
3dc37a5af1b1 new method PythonObject::ConvertToJson()
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236 }
3dc37a5af1b1 new method PythonObject::ConvertToJson()
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237 }