TextIO.cc

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    /*************************************************************************************
 
    Grid physics library, www.github.com/paboyle/Grid 
 
    Source file: ./lib/serialisation/TextIO.cc
 
    Copyright (C) 2015
 
    Author: Antonin Portelli <antonin.portelli@me.com>
    Author: paboyle <paboyle@ph.ed.ac.uk>
    Author: Guido Cossu<guido.cossu@ed.ac.uk>
 
    This program is free software; you can redistribute it and/or modify
    it under the terms of the GNU General Public License as published by
    the Free Software Foundation; either version 2 of the License, or
    (at your option) any later version.
 
    This program 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, write to the Free Software Foundation, Inc.,
    51 Franklin Street, Fifth Floor, Boston, MA 02110-1301 USA.
 
    See the full license in the file "LICENSE" in the top level distribution directory
    *************************************************************************************/
    /*  END LEGAL */
#include <Grid/GridCore.h>
 
#define GRID_TEXT_INDENT 2      //number of spaces for indentation of levels
 
NAMESPACE_BEGIN(Grid);
// Writer implementation ///////////////////////////////////////////////////////
TextWriter::TextWriter(const std::string &fileName)
: file_(fileName, std::ios::out)
{}
 
void TextWriter::push(const std::string &s)
{
  level_++;
};
 
void TextWriter::pop(void)
{
  level_--;
};
 
void TextWriter::indent(void)
{
  for (int i = 0; i < level_; ++i)
    for (int t = 0; t < GRID_TEXT_INDENT; t++)
      file_ << ' ';
};
 
// Reader implementation ///////////////////////////////////////////////////////
TextReader::TextReader(const std::string &fileName) 
{
    file_.open(fileName, std::ios::in);
    if (!file_.is_open()) {
        std::cout << GridLogMessage << "TextReader: Error opening file " << fileName << std::endl;
        exit(1);// write better error handling
    } 
}
 
bool TextReader::push(const std::string &s)
{
  level_++;
  return true;
};
 
void TextReader::pop(void)
{
  level_--;
};
 
void TextReader::checkIndent(void)
{
  char c;
  
  for (int i = 0; i < level_; ++i)
  {
    bool check = true;
    for (int t = 0; t< GRID_TEXT_INDENT; t++){
    file_.get(c);
    check = check && isspace(c);
  }
    if (!check)
    {
      std::cerr << "TextReader: mismatch on level " << level_ << std::endl;
      exit(1);
    }
  }
}
 
template <>
void TextReader::readDefault(const std::string &s, std::string &output)
{
    checkIndent();
    output.clear();
    getline(file_, output);
}
NAMESPACE_END(Grid);