Mercurial > hg > orthanc
diff OrthancFramework/Sources/Lua/LuaFunctionCall.cpp @ 4044:d25f4c0fa160 framework
splitting code into OrthancFramework and OrthancServer
author | Sebastien Jodogne <s.jodogne@gmail.com> |
---|---|
date | Wed, 10 Jun 2020 20:30:34 +0200 |
parents | Core/Lua/LuaFunctionCall.cpp@94f4a18a79cc |
children | c02a2d9efbc2 |
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--- /dev/null Thu Jan 01 00:00:00 1970 +0000 +++ b/OrthancFramework/Sources/Lua/LuaFunctionCall.cpp Wed Jun 10 20:30:34 2020 +0200 @@ -0,0 +1,191 @@ +/** + * Orthanc - A Lightweight, RESTful DICOM Store + * Copyright (C) 2012-2016 Sebastien Jodogne, Medical Physics + * Department, University Hospital of Liege, Belgium + * Copyright (C) 2017-2020 Osimis S.A., Belgium + * + * This program is free software: you can redistribute it and/or + * modify it under the terms of the GNU General Public License as + * published by the Free Software Foundation, either version 3 of the + * License, or (at your option) any later version. + * + * In addition, as a special exception, the copyright holders of this + * program give permission to link the code of its release with the + * OpenSSL project's "OpenSSL" library (or with modified versions of it + * that use the same license as the "OpenSSL" library), and distribute + * the linked executables. You must obey the GNU General Public License + * in all respects for all of the code used other than "OpenSSL". If you + * modify file(s) with this exception, you may extend this exception to + * your version of the file(s), but you are not obligated to do so. If + * you do not wish to do so, delete this exception statement from your + * version. If you delete this exception statement from all source files + * in the program, then also delete it here. + * + * 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 + * General Public License for more details. + * + * You should have received a copy of the GNU 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" + +#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::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); + } +}