txt_reader.cpp

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// Copyright (C) 2011 Lutz Foucar

/**
 * @file txt_reader.cpp contains class to read txt ascii files
 *
 * @author Lutz Foucar
 */

#include <algorithm>

#include <QtCore/QFileInfo>

#include "txt_reader.h"

#include "cass_event.h"
#include "cass_settings.h"
#include "machine_device.hpp"
#include "cass.h"
#include "log.h"

using namespace cass;
using namespace MachineData;
using namespace std;

TxtReader::TxtReader()
  : FileReader("txt")
{}

void TxtReader::loadSettings()
{
  CASSSettings s;
  s.beginGroup("TxtReader");
  s.beginGroup(QFileInfo(QString::fromStdString(_filename)).baseName());
  _delim = s.value("Deliminator",'\t').toInt();
  _eventIdhead = s.value("EventIdHeader","Event ID 24 bits").toString().toStdString();
  _linesToSkip = s.value("LinesToSkip",3).toUInt();
  s.endGroup();
  s.endGroup();
}

void TxtReader::readHeaderInfo(std::ifstream &file)
{
  string headerline;
  string tmp;
  for (size_t i=0;i<_linesToSkip;++i)
    getline(file, tmp);
  _headers.clear();
  getline(file, headerline);
  _split(headerline,_headers,_delim);
  string info("TextReader: '" + _filename +"' contains the following variables:");
  vector<string>::const_iterator h(_headers.begin()), end(_headers.end());
  while(h != end)
    info += "'"+ *h++ + "',";
  Log::add(Log::VERBOSEINFO,info);
}

bool TxtReader::operator ()(ifstream &file, CASSEvent& event)
{
  string line;
  vector<double> values;
  while(true)
  {
    getline(file, line);
    values.clear();
    _split(line,values,_delim);
    if (!values.empty())
      break;
  }
  if(_headers.size() != values.size())
    throw runtime_error("TextReader(): In file '" + _filename +
                        "' are not enough values for the amount of values '" + toString(values.size()) +
                        "' suggested by the header '" + toString(_headers.size())+
                        "'. This is the line: " + line);

  if (event.devices().find(CASSEvent::MachineData) == event.devices().end())
    throw runtime_error("TextReader():The CASSEvent does not contain a Machine Data Device");

  Device &md
    (dynamic_cast<Device&>(*(event.devices()[CASSEvent::MachineData])));

  vector<double>::const_iterator value(values.begin());
  vector<string>::const_iterator head(_headers.begin());
  for (;value != values.end(); ++value, ++head)
    md.BeamlineData()[*head] = *value;

  event.id() = md.BeamlineData()[_eventIdhead];

  return (event.id());
}