Mercurial > hg > orthanc
view OrthancFramework/Sources/Lua/LuaFunctionCall.cpp @ 4984:c8cdf5163cd2
cppcheck
author | Alain Mazy <am@osimis.io> |
---|---|
date | Mon, 25 Apr 2022 18:54:45 +0200 |
parents | 43e613a7756b |
children | 0ea402b4d901 |
line wrap: on
line source
/** * Orthanc - A Lightweight, RESTful DICOM Store * Copyright (C) 2012-2016 Sebastien Jodogne, Medical Physics * Department, University Hospital of Liege, Belgium * Copyright (C) 2017-2022 Osimis S.A., Belgium * Copyright (C) 2021-2022 Sebastien Jodogne, ICTEAM UCLouvain, Belgium * * This program is free software: you can redistribute it and/or * modify it under the terms of the GNU Lesser General Public License * as published by the Free Software Foundation, either version 3 of * the License, or (at your option) any later version. * * This program is distributed in the hope that it will be useful, but * WITHOUT ANY WARRANTY; without even the implied warranty of * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU * Lesser General Public License for more details. * * You should have received a copy of the GNU Lesser General Public * License along with this program. If not, see * <http://www.gnu.org/licenses/>. **/ #include "../PrecompiledHeaders.h" #include "LuaFunctionCall.h" #include "../OrthancException.h" #include "../Logging.h" #if ORTHANC_ENABLE_DCMTK == 1 # include "../DicomParsing/FromDcmtkBridge.h" #endif #include <cassert> #include <stdio.h> #include <boost/lexical_cast.hpp> namespace Orthanc { void LuaFunctionCall::CheckAlreadyExecuted() { if (isExecuted_) { throw OrthancException(ErrorCode_LuaAlreadyExecuted); } } LuaFunctionCall::LuaFunctionCall(LuaContext& context, const char* functionName) : context_(context), isExecuted_(false) { // Clear the stack to fulfill the invariant lua_settop(context_.lua_, 0); lua_getglobal(context_.lua_, functionName); } void LuaFunctionCall::PushString(const std::string& value) { CheckAlreadyExecuted(); lua_pushlstring(context_.lua_, value.c_str(), value.size()); } void LuaFunctionCall::PushBoolean(bool value) { CheckAlreadyExecuted(); lua_pushboolean(context_.lua_, value); } void LuaFunctionCall::PushInteger(int value) { CheckAlreadyExecuted(); lua_pushinteger(context_.lua_, value); } void LuaFunctionCall::PushDouble(double value) { CheckAlreadyExecuted(); lua_pushnumber(context_.lua_, value); } void LuaFunctionCall::PushJson(const Json::Value& value) { CheckAlreadyExecuted(); context_.PushJson(value); } void LuaFunctionCall::ExecuteInternal(int numOutputs) { CheckAlreadyExecuted(); assert(lua_gettop(context_.lua_) >= 1); int nargs = lua_gettop(context_.lua_) - 1; int error = lua_pcall(context_.lua_, nargs, numOutputs, 0); if (error) { assert(lua_gettop(context_.lua_) >= 1); std::string description(lua_tostring(context_.lua_, -1)); lua_pop(context_.lua_, 1); /* pop error message from the stack */ throw OrthancException(ErrorCode_CannotExecuteLua, description); } if (lua_gettop(context_.lua_) < numOutputs) { throw OrthancException(ErrorCode_LuaBadOutput); } isExecuted_ = true; } bool LuaFunctionCall::ExecutePredicate() { ExecuteInternal(1); if (!lua_isboolean(context_.lua_, 1)) { throw OrthancException(ErrorCode_NotLuaPredicate); } return lua_toboolean(context_.lua_, 1) != 0; } void LuaFunctionCall::ExecuteToJson(Json::Value& result, bool keepStrings) { ExecuteInternal(1); context_.GetJson(result, context_.lua_, lua_gettop(context_.lua_), keepStrings); } void LuaFunctionCall::ExecuteToString(std::string& result) { ExecuteInternal(1); int top = lua_gettop(context_.lua_); if (lua_isstring(context_.lua_, top)) { result = lua_tostring(context_.lua_, top); } else { throw OrthancException(ErrorCode_LuaReturnsNoString); } } void LuaFunctionCall::ExecuteToInt(int& result) { ExecuteInternal(1); int top = lua_gettop(context_.lua_); if (lua_isnumber(context_.lua_, top)) { result = static_cast<int>(lua_tointeger(context_.lua_, top)); } else { throw OrthancException(ErrorCode_LuaReturnsNoString); } } void LuaFunctionCall::PushStringMap(const std::map<std::string, std::string>& value) { Json::Value json = Json::objectValue; for (std::map<std::string, std::string>::const_iterator it = value.begin(); it != value.end(); ++it) { json[it->first] = it->second; } PushJson(json); } void LuaFunctionCall::PushDicom(const DicomMap& dicom) { DicomArray a(dicom); PushDicom(a); } void LuaFunctionCall::PushDicom(const DicomArray& dicom) { Json::Value value = Json::objectValue; for (size_t i = 0; i < dicom.GetSize(); i++) { const DicomValue& v = dicom.GetElement(i).GetValue(); std::string s = (v.IsNull() || v.IsBinary()) ? "" : v.GetContent(); value[dicom.GetElement(i).GetTag().Format()] = s; } PushJson(value); } void LuaFunctionCall::Execute() { ExecuteInternal(0); } #if ORTHANC_ENABLE_DCMTK == 1 void LuaFunctionCall::ExecuteToDicom(DicomMap& target) { Json::Value output; ExecuteToJson(output, true /* keep strings */); target.Clear(); if (output.type() == Json::arrayValue && output.size() == 0) { // This case happens for empty tables return; } if (output.type() != Json::objectValue) { throw OrthancException(ErrorCode_LuaBadOutput, "Lua: The script must return a table"); } Json::Value::Members members = output.getMemberNames(); for (size_t i = 0; i < members.size(); i++) { if (output[members[i]].type() != Json::stringValue) { throw OrthancException(ErrorCode_LuaBadOutput, "Lua: The script must return a table " "mapping names of DICOM tags to strings"); } DicomTag tag(FromDcmtkBridge::ParseTag(members[i])); target.SetValue(tag, output[members[i]].asString(), false); } } #endif }