conditions::GeneralCSVLoader Class Reference

Class which parses a CSV file and provides the rows one at a time to a user The parser ignores any line which begins with a '#' character The parser uses the first non-comment row to determine column names The parser handles quotation marks in a standard manner. More...

#include <GeneralCSVLoader.h>

Public Member Functions
virtual	~GeneralCSVLoader ()
	Destructor.
std::vector< std::string >	columnNames () const
	Get the column names.
bool	nextRow ()
	Advance to next row if possible.
const std::string &	get (const std::string &colname, bool ignore_case=true) const
	Get the value for the given column in the current row.
int	getInteger (const std::string &colname, bool ignore_case=true) const
	Get the value for the given column in the current row as an integer.

Protected Member Functions
virtual std::string	getNextLine ()=0
	Get the next line, returning an empty string when there is no further data.

Private Attributes
std::vector< std::string >	col_names_
	The column names.
std::vector< std::string >	row_data_
	The row data.

Detailed Description

Class which parses a CSV file and provides the rows one at a time to a user The parser ignores any line which begins with a '#' character The parser uses the first non-comment row to determine column names The parser handles quotation marks in a standard manner.

Definition at line 19 of file GeneralCSVLoader.h.

Constructor & Destructor Documentation

~GeneralCSVLoader()

virtual conditions::GeneralCSVLoader::~GeneralCSVLoader ( )

inlinevirtual

Destructor.

Definition at line 22 of file GeneralCSVLoader.h.

{}

GeneralCSVLoader()

conditions::GeneralCSVLoader::GeneralCSVLoader ( )

inlineprotected

Definition at line 38 of file GeneralCSVLoader.h.

{}

Member Function Documentation

columnNames()

std::vector< std::string > conditions::GeneralCSVLoader::columnNames ( ) const

inline

Get the column names.

Definition at line 25 of file GeneralCSVLoader.h.

{ return col_names_; }

References col_names_.

get()

const std::string & conditions::GeneralCSVLoader::get	(	const std::string &	colname,
		bool	ignore_case = true ) const

Get the value for the given column in the current row.

Definition at line 14 of file GeneralCSVLoader.cxx.

                                                                 {
  size_t i;
  for (i = 0; i < col_names_.size(); i++) {
    if (ignore_case && !strcasecmp(col_names_[i].c_str(), colname.c_str()))
      break;
    if (col_names_[i] == colname) break;
  }
  if (i == col_names_.size()) {
    EXCEPTION_RAISE("CSVNoSuchColumn",
                    "No such column '" + colname + "' reading CSV");
  }
  return row_data_[i];
}

References col_names_, and row_data_.

Referenced by getInteger().

getInteger()

int conditions::GeneralCSVLoader::getInteger	(	const std::string &	colname,
		bool	ignore_case = true ) const

Get the value for the given column in the current row as an integer.

Definition at line 29 of file GeneralCSVLoader.cxx.

                                                         {
  return atoi(get(colname, ignore_case).c_str());
}

References get().

Referenced by hcal::HcalDetectorMap::HcalDetectorMap(), ecal::EcalDetectorMap::loadCellMap(), ecal::EcalDetectorMap::loadLayerMap(), and ecal::EcalDetectorMap::loadMotherboardMap().

getNextLine()

virtual std::string conditions::GeneralCSVLoader::getNextLine ( )

protectedpure virtual

Get the next line, returning an empty string when there is no further data.

Implemented in conditions::StreamCSVLoader, and conditions::StringCSVLoader.

Referenced by nextRow().

nextRow()

bool conditions::GeneralCSVLoader::nextRow

(

)

Advance to next row if possible.

Definition at line 34 of file GeneralCSVLoader.cxx.

                               {
  do {
    std::string line = getNextLine();
    if (line.empty()) return false;
    // it's a comment!
    if (line[0] == '#') continue;
    // split into pieces
    std::vector<std::string> line_split;
    // explicitly erase trailing white space
    line.erase(std::find_if(line.rbegin(), line.rend(),
                            [](unsigned char c) { return !std::isspace(c); })
                   .base(),
               line.end());
    boost::tokenizer<boost::escaped_list_separator<char>> tok(line);
    for (auto chunk : tok) {
      line_split.push_back(chunk);
    }
    if (col_names_.empty()) {
      col_names_.swap(line_split);
      continue;
    }
    if (line_split.size() == col_names_.size()) {
      row_data_.swap(line_split);
    } else {
      EXCEPTION_RAISE("CSVLineMismatch",
                      "Reading CSV found line with " +
                          std::to_string(line_split.size()) + " in CSV with " +
                          std::to_string(col_names_.size()) + " columns");
    }
 
    return true;
  } while (true);
}

References col_names_, getNextLine(), and row_data_.

Referenced by hcal::HcalDetectorMap::HcalDetectorMap(), ecal::EcalDetectorMap::loadCellMap(), ecal::EcalDetectorMap::loadLayerMap(), and ecal::EcalDetectorMap::loadMotherboardMap().

Member Data Documentation

col_names_

std::vector<std::string> conditions::GeneralCSVLoader::col_names_

private

The column names.

Definition at line 48 of file GeneralCSVLoader.h.

Referenced by columnNames(), get(), and nextRow().

row_data_

std::vector<std::string> conditions::GeneralCSVLoader::row_data_

private

The row data.

Definition at line 52 of file GeneralCSVLoader.h.

Referenced by get(), and nextRow().

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The documentation for this class was generated from the following files:

• Conditions/include/Conditions/GeneralCSVLoader.h
• Conditions/src/Conditions/GeneralCSVLoader.cxx