ArbitraryFunctionFromCSV.cpp

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// This file is part of DynExp.
 
#include "stdafx.h"
#include "ArbitraryFunctionFromCSV.h"
 
namespace DynExpModule
{
 
    void ArbitraryFunctionFromCSVData::ResetImpl(dispatch_tag<ModuleDataBase>)
    {
        Init();
    }
 
    void ArbitraryFunctionFromCSVData::Init()
    {
    }
 
    Util::DynExpErrorCodes::DynExpErrorCodes ArbitraryFunctionFromCSV::ModuleMainLoop(DynExp::ModuleInstance& Instance)
    {
        return Util::DynExpErrorCodes::NoError;
    }
 
    void ArbitraryFunctionFromCSV::ResetImpl(dispatch_tag<ModuleBase>)
    {
    }
 
    void ArbitraryFunctionFromCSV::OnInit(DynExp::ModuleInstance* Instance) const
    {
        std::string CSVDataPath;
        size_t SkipLines{};
        double TimeStretch{}, TimeOffset{}, ValueStretch{}, ValueOffset{};
 
        {
            auto ModuleParams = DynExp::dynamic_Params_cast<ArbitraryFunctionFromCSV>(Instance->ParamsGetter());
            auto ModuleData = DynExp::dynamic_ModuleData_cast<ArbitraryFunctionFromCSV>(Instance->ModuleDataGetter());
 
            Instance->LockObject(ModuleParams->FunctionGenerator, ModuleData->FunctionGenerator);
 
            CSVDataPath = ModuleParams->CSVDataPath.GetPath().string();
            SkipLines = ModuleParams->SkipLines;
            TimeStretch = ModuleParams->TimeStretch;
            TimeOffset = ModuleParams->TimeOffset;
            ValueStretch = ModuleParams->ValueStretch;
            ValueOffset = ModuleParams->ValueOffset;
        } // ModuleParams and ModuleData unlocked here.
 
        // Reading and parsing potentially very heavy. So, unlock every mutex before.
        auto CSVData = Util::ReadFromFile(CSVDataPath);
 
        std::vector<DynExpInstr::BasicSample> BasicSamples;
        try
        {
            try
            {
                // Try to parse format time;value...
                auto ParsedCSV = Util::ParseCSV<double, double>(CSVData, ';', SkipLines);
 
                for (const auto& ParsedTuple : ParsedCSV)
                    BasicSamples.emplace_back(std::get<1>(ParsedTuple) * ValueStretch + ValueOffset, std::get<0>(ParsedTuple) * TimeStretch + TimeOffset);
            }
            catch ([[maybe_unused]] std::ios_base::failure& e)
            {
                // ...did not work. So, try to parse list of values. 
                auto ParsedCSV = Util::ParseCSV<double>(CSVData, ';', SkipLines);
 
                for (const auto& ParsedTuple : ParsedCSV)
                    BasicSamples.emplace_back(std::get<0>(ParsedTuple) * ValueStretch + ValueOffset);
            }
        }
        catch ([[maybe_unused]] std::ios_base::failure& e)
        {
            throw Util::InvalidDataException("Error parsing the CSV file \"" + CSVDataPath + "\".");
        }
 
        auto ModuleData = DynExp::dynamic_ModuleData_cast<ArbitraryFunctionFromCSV>(Instance->ModuleDataGetter());
        ModuleData->FunctionGenerator->Clear();
        ModuleData->FunctionGenerator->SetArbitraryFunction(std::move(BasicSamples), true);
    }
 
    void ArbitraryFunctionFromCSV::OnExit(DynExp::ModuleInstance* Instance) const
    {
        auto ModuleData = DynExp::dynamic_ModuleData_cast<ArbitraryFunctionFromCSV>(Instance->ModuleDataGetter());
 
        ModuleData->FunctionGenerator->Stop();
        Instance->UnlockObject(ModuleData->FunctionGenerator);
    }
}