CSVReaderVectorPostprocessor.C

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//* This file is part of the MOOSE framework
//* https://mooseframework.inl.gov
//*
//* All rights reserved, see COPYRIGHT for full restrictions
//* https://github.com/idaholab/moose/blob/master/COPYRIGHT
//*
//* Licensed under LGPL 2.1, please see LICENSE for details
//* https://www.gnu.org/licenses/lgpl-2.1.html
 
// STL includes
#include <fstream>
 
// MOOSE includes
#include "CSVReaderVectorPostprocessor.h"
#include "MooseUtils.h"
 
registerMooseObject("MooseApp", CSVReaderVectorPostprocessor);
registerMooseObjectRenamed("MooseApp", CSVReader, "06/30/2024 24:00", CSVReaderVectorPostprocessor);
 
InputParameters
CSVReaderVectorPostprocessor::validParams()
{
  InputParameters params = GeneralVectorPostprocessor::validParams();
  params.addClassDescription(
      "Converts columns of a CSV file into vectors of a VectorPostprocessor.");
  params.addRequiredParam<FileName>("csv_file",
                                    "The name of the CSV file to read. Currently, with "
                                    "the exception of the header row, only numeric "
                                    "values are supported.");
  params.addParam<bool>("header",
                        "When true it is assumed that the first row contains column headers, these "
                        "headers are used as the VectorPostprocessor vector names. If false the "
                        "file is assumed to contain only numbers and the vectors are named "
                        "automatically based on the column number (e.g., 'column_0000', "
                        "'column_0001'). If not supplied the reader attempts to auto detect the "
                        "headers.");
  params.addParam<std::string>("delimiter",
                               "The column delimiter. Despite the name this can read files "
                               "separated by delimiter other than a comma. If this options is "
                               "omitted it will read comma or space separated files.");
  params.addParam<bool>(
      "ignore_empty_lines", true, "When true new empty lines in the file are ignored.");
  params.set<bool>("contains_complete_history") = true;
  params.suppressParameter<bool>("contains_complete_history");
  params.set<ExecFlagEnum>("execute_on", true) = EXEC_NONE;
  params.suppressParameter<ExecFlagEnum>("execute_on");
 
  // The value from this VPP is naturally already on every processor
  // TODO: Make this not the case!  See #11415
  params.set<bool>("_auto_broadcast") = false;
 
  return params;
}
 
CSVReaderVectorPostprocessor::CSVReaderVectorPostprocessor(const InputParameters & params)
  : GeneralVectorPostprocessor(params)
{
  MooseUtils::DelimitedFileReader csv_reader(getParam<FileName>("csv_file"), &_communicator);
  csv_reader.setIgnoreEmptyLines(getParam<bool>("ignore_empty_lines"));
  if (isParamValid("header"))
    csv_reader.setHeaderFlag(getParam<bool>("header")
                                 ? MooseUtils::DelimitedFileReader::HeaderFlag::ON
                                 : MooseUtils::DelimitedFileReader::HeaderFlag::OFF);
  if (isParamValid("delimiter"))
    csv_reader.setDelimiter(getParam<std::string>("delimiter"));
 
  csv_reader.read();
  const std::vector<std::string> & names = csv_reader.getNames();
  const std::vector<std::vector<double>> & data = csv_reader.getData();
  for (std::size_t i = 0; i < data.size(); ++i)
  {
    _column_data[names[i]] = &declareVector(names[i]);
    _column_data[names[i]]->assign(data[i].begin(), data[i].end());
  }
}