Mercurial > hg > orthanc
annotate OrthancFramework/Sources/Lua/LuaFunctionCall.cpp @ 4105:c02a2d9efbc2
move FromDcmtkBridge::ExecuteToDicom() to LuaFunctionCall, to remove dependency of DCMTK on Lua
| author | Sebastien Jodogne <s.jodogne@gmail.com> |
|---|---|
| date | Mon, 06 Jul 2020 13:48:10 +0200 |
| parents | d25f4c0fa160 |
| children | bf7b9edf6b81 |
| rev | line source |
|---|---|
| 386 | 1 /** |
| 2 * Orthanc - A Lightweight, RESTful DICOM Store | |
| 1900 | 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) 2017-2020 Osimis S.A., Belgium |
| 386 | 6 * |
| 7 * This program is free software: you can redistribute it and/or | |
| 8 * modify it under the terms of the GNU General Public License as | |
| 9 * published by the Free Software Foundation, either version 3 of the | |
| 10 * License, or (at your option) any later version. | |
| 11 * | |
| 12 * In addition, as a special exception, the copyright holders of this | |
| 13 * program give permission to link the code of its release with the | |
| 14 * OpenSSL project's "OpenSSL" library (or with modified versions of it | |
| 15 * that use the same license as the "OpenSSL" library), and distribute | |
| 16 * the linked executables. You must obey the GNU General Public License | |
| 17 * in all respects for all of the code used other than "OpenSSL". If you | |
| 18 * modify file(s) with this exception, you may extend this exception to | |
| 19 * your version of the file(s), but you are not obligated to do so. If | |
| 20 * you do not wish to do so, delete this exception statement from your | |
| 21 * version. If you delete this exception statement from all source files | |
| 22 * in the program, then also delete it here. | |
| 23 * | |
| 24 * This program is distributed in the hope that it will be useful, but | |
| 25 * WITHOUT ANY WARRANTY; without even the implied warranty of | |
| 26 * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU | |
| 27 * General Public License for more details. | |
| 28 * | |
| 29 * You should have received a copy of the GNU General Public License | |
| 30 * along with this program. If not, see <http://www.gnu.org/licenses/>. | |
| 31 **/ | |
| 32 | |
| 33 | |
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34 #include "../PrecompiledHeaders.h" |
| 386 | 35 #include "LuaFunctionCall.h" |
| 36 | |
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37 #include "../OrthancException.h" |
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38 #include "../Logging.h" |
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39 |
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40 #if ORTHANC_ENABLE_DCMTK == 1 |
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41 # include "../DicomParsing/FromDcmtkBridge.h" |
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42 #endif |
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43 |
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44 #include <cassert> |
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45 #include <stdio.h> |
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46 #include <boost/lexical_cast.hpp> |
| 386 | 47 |
| 48 namespace Orthanc | |
| 49 { | |
| 50 void LuaFunctionCall::CheckAlreadyExecuted() | |
| 51 { | |
| 52 if (isExecuted_) | |
| 53 { | |
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54 throw OrthancException(ErrorCode_LuaAlreadyExecuted); |
| 386 | 55 } |
| 56 } | |
| 57 | |
| 58 LuaFunctionCall::LuaFunctionCall(LuaContext& context, | |
| 59 const char* functionName) : | |
| 60 context_(context), | |
| 61 isExecuted_(false) | |
| 62 { | |
| 63 // Clear the stack to fulfill the invariant | |
| 64 lua_settop(context_.lua_, 0); | |
| 65 lua_getglobal(context_.lua_, functionName); | |
| 66 } | |
| 67 | |
| 68 void LuaFunctionCall::PushString(const std::string& value) | |
| 69 { | |
| 70 CheckAlreadyExecuted(); | |
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71 lua_pushlstring(context_.lua_, value.c_str(), value.size()); |
| 386 | 72 } |
| 73 | |
| 74 void LuaFunctionCall::PushBoolean(bool value) | |
| 75 { | |
| 76 CheckAlreadyExecuted(); | |
| 77 lua_pushboolean(context_.lua_, value); | |
| 78 } | |
| 79 | |
| 80 void LuaFunctionCall::PushInteger(int value) | |
| 81 { | |
| 82 CheckAlreadyExecuted(); | |
| 83 lua_pushinteger(context_.lua_, value); | |
| 84 } | |
| 85 | |
| 86 void LuaFunctionCall::PushDouble(double value) | |
| 87 { | |
| 88 CheckAlreadyExecuted(); | |
| 89 lua_pushnumber(context_.lua_, value); | |
| 90 } | |
| 91 | |
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92 void LuaFunctionCall::PushJson(const Json::Value& value) |
| 386 | 93 { |
| 94 CheckAlreadyExecuted(); | |
| 1051 | 95 context_.PushJson(value); |
| 386 | 96 } |
| 97 | |
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98 void LuaFunctionCall::ExecuteInternal(int numOutputs) |
| 386 | 99 { |
| 100 CheckAlreadyExecuted(); | |
| 101 | |
| 102 assert(lua_gettop(context_.lua_) >= 1); | |
| 103 int nargs = lua_gettop(context_.lua_) - 1; | |
| 104 int error = lua_pcall(context_.lua_, nargs, numOutputs, 0); | |
| 105 | |
| 106 if (error) | |
| 107 { | |
| 108 assert(lua_gettop(context_.lua_) >= 1); | |
| 109 | |
| 110 std::string description(lua_tostring(context_.lua_, -1)); | |
| 111 lua_pop(context_.lua_, 1); /* pop error message from the stack */ | |
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112 |
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113 throw OrthancException(ErrorCode_CannotExecuteLua, description); |
| 386 | 114 } |
| 115 | |
| 116 if (lua_gettop(context_.lua_) < numOutputs) | |
| 117 { | |
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118 throw OrthancException(ErrorCode_LuaBadOutput); |
| 386 | 119 } |
| 120 | |
| 121 isExecuted_ = true; | |
| 122 } | |
| 123 | |
| 124 bool LuaFunctionCall::ExecutePredicate() | |
| 125 { | |
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126 ExecuteInternal(1); |
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127 |
| 386 | 128 if (!lua_isboolean(context_.lua_, 1)) |
| 129 { | |
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130 throw OrthancException(ErrorCode_NotLuaPredicate); |
| 386 | 131 } |
| 132 | |
| 133 return lua_toboolean(context_.lua_, 1) != 0; | |
| 134 } | |
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135 |
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136 |
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137 void LuaFunctionCall::ExecuteToJson(Json::Value& result, |
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138 bool keepStrings) |
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139 { |
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140 ExecuteInternal(1); |
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141 context_.GetJson(result, context_.lua_, lua_gettop(context_.lua_), keepStrings); |
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142 } |
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143 |
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144 |
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145 void LuaFunctionCall::ExecuteToString(std::string& result) |
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146 { |
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147 ExecuteInternal(1); |
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148 |
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149 int top = lua_gettop(context_.lua_); |
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150 if (lua_isstring(context_.lua_, top)) |
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151 { |
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152 result = lua_tostring(context_.lua_, top); |
| 1010 | 153 } |
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154 else |
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155 { |
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156 throw OrthancException(ErrorCode_LuaReturnsNoString); |
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157 } |
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158 } |
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159 |
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160 |
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161 void LuaFunctionCall::PushStringMap(const std::map<std::string, std::string>& value) |
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162 { |
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163 Json::Value json = Json::objectValue; |
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164 |
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165 for (std::map<std::string, std::string>::const_iterator |
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166 it = value.begin(); it != value.end(); ++it) |
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167 { |
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168 json[it->first] = it->second; |
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169 } |
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170 |
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171 PushJson(json); |
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172 } |
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173 |
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174 |
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175 void LuaFunctionCall::PushDicom(const DicomMap& dicom) |
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176 { |
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177 DicomArray a(dicom); |
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178 PushDicom(a); |
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179 } |
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180 |
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181 |
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182 void LuaFunctionCall::PushDicom(const DicomArray& dicom) |
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183 { |
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184 Json::Value value = Json::objectValue; |
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185 |
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186 for (size_t i = 0; i < dicom.GetSize(); i++) |
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187 { |
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188 const DicomValue& v = dicom.GetElement(i).GetValue(); |
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189 std::string s = (v.IsNull() || v.IsBinary()) ? "" : v.GetContent(); |
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190 value[dicom.GetElement(i).GetTag().Format()] = s; |
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191 } |
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192 |
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193 PushJson(value); |
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194 } |
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195 |
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196 |
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197 #if ORTHANC_ENABLE_DCMTK == 1 |
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198 void LuaFunctionCall::ExecuteToDicom(DicomMap& target) |
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199 { |
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200 Json::Value output; |
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201 ExecuteToJson(output, true /* keep strings */); |
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202 |
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203 target.Clear(); |
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204 |
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205 if (output.type() == Json::arrayValue && |
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206 output.size() == 0) |
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207 { |
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208 // This case happens for empty tables |
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209 return; |
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210 } |
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211 |
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212 if (output.type() != Json::objectValue) |
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213 { |
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214 throw OrthancException(ErrorCode_LuaBadOutput, |
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215 "Lua: The script must return a table"); |
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216 } |
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217 |
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218 Json::Value::Members members = output.getMemberNames(); |
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219 |
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220 for (size_t i = 0; i < members.size(); i++) |
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221 { |
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222 if (output[members[i]].type() != Json::stringValue) |
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223 { |
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224 throw OrthancException(ErrorCode_LuaBadOutput, |
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225 "Lua: The script must return a table " |
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226 "mapping names of DICOM tags to strings"); |
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227 } |
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228 |
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229 DicomTag tag(FromDcmtkBridge::ParseTag(members[i])); |
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230 target.SetValue(tag, output[members[i]].asString(), false); |
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231 } |
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232 } |
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233 #endif |
| 386 | 234 } |