CsvReader.cpp

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/*
 * This file is part of ArmarX.
 *
 * Copyright (C) 2012-2016, High Performance Humanoid Technologies (H2T),
 * Karlsruhe Institute of Technology (KIT), all rights reserved.
 *
 * ArmarX is free software; you can redistribute it and/or modify
 * it under the terms of the GNU General Public License version 2 as
 * published by the Free Software Foundation.
 *
 * ArmarX 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/>.
 *
 * @author     Simon Ottenhaus (simon dot ottenhaus at kit dot edu)
 * @copyright  http://www.gnu.org/licenses/gpl-2.0.txt
 *             GNU General Public License
 */
 
#include "CsvReader.h"
#include <ArmarXCore/core/util/StringHelpers.h>
 
namespace armarx
{
    CsvReader::CsvReader(const std::string& filename, bool hasHeader)
        : separator(",")
    {
        file.open(filename, std::ios_base::in);
 
        if (hasHeader)
        {
            std::string line;
            readLine(line);
            header = Split(line, separator);
        }
    }
 
    bool CsvReader::read(std::vector<std::string>& row)
    {
        std::string line;
        if (!readLine(line))
        {
            return false;
        }
        row = Split(line, separator);
        return true;
    }
 
    bool CsvReader::read(std::vector<float>& row)
    {
        row.clear();
        std::string line;
        if (!readLine(line))
        {
            return false;
        }
        std::vector<std::string> rowStr = Split(line, separator);
        for (const std::string& s : rowStr)
        {
            row.push_back(toFloat(s));
        }
        return true;
    }
 
    bool CsvReader::read(std::map<std::string, float>& row)
    {
        row.clear();
        std::string line;
        if (!readLine(line))
        {
            return false;
        }
        std::vector<std::string> rowStr = Split(line, separator);
        for (size_t i = 0; i < rowStr.size() && i < header.size(); i++)
        {
            row[header.at(i)] = toFloat(rowStr.at(i));
        }
        return true;
    }
 
    std::vector<std::vector<float> > CsvReader::readAllFloatList()
    {
        std::vector<std::vector<float> > data;
        std::vector<float> row;
        while (read(row))
        {
            data.push_back(row);
        }
        return data;
    }
 
    std::vector<std::map<std::string, float> > CsvReader::readAllFloatMap()
    {
        std::vector<std::map<std::string, float> > data;
        std::map<std::string, float> row;
        while (read(row))
        {
            data.push_back(row);
        }
        return data;
    }
 
    std::map<std::string, std::vector<float> > CsvReader::readAllColumnsFloatMap()
    {
        std::map<std::string, std::vector<float> > data;
        std::vector<float> row;
        while (read(row))
        {
            for (size_t i = 0; i < row.size() && i < header.size(); i++)
            {
                data[header.at(i)].push_back(row.at(i));
            }
        }
        return data;
    }
 
    std::vector<std::string> CsvReader::getHeader()
    {
        return header;
    }
 
 
    bool CsvReader::isEof()
    {
        return file.eof();
    }
 
    bool CsvReader::readLine(std::string& line)
    {
        return static_cast<bool>(std::getline(file, line));
    }
}