/afs/cern.ch/work/a/aaltunda/public/www/CMSSW_6_2_7/src/Calibration/Tools/bin/trivialParser.cc

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//#include "Calibration/EcalAlCaRecoProducers/interface/trivialParser.h"
#include "Calibration/Tools/bin/trivialParser.h"
#include <iostream>
#include <cstdlib>

trivialParser::trivialParser (std::string configFile) 
{
  parse (configFile) ;
  print ("[ctor] ") ;
}


// ------------------------------------------------------------


double
trivialParser::getVal (std::string name) 
{
  if (m_config.count (name)) return m_config[name] ;
  std::cerr << "[trivialParser] no value for " 
            << name
            << " found\n" ;
  return -999999. ;
}


// ------------------------------------------------------------


void
trivialParser::parse (std::string configFile) 
{
  std::ifstream input (configFile.c_str ()) ;  
  do {
    std::string linea = getNextLine (input) ;
    if (linea.empty ()) continue ;
    std::string name (linea,0,linea.find ('=',0)) ;
    eraseSpaces (name) ;
    std::string valuestring (linea,linea.find ('=', 0) + 1,
                             linea.size () - linea.find ('=', 0) - 1) ;
    eraseSpaces (valuestring) ;
    double value = strtod ( valuestring.c_str (), NULL ) ;
    m_config [name] = value ;
  } while (!input.eof () ) ;
}


// ------------------------------------------------------------


std::string 
trivialParser::getNextLine (std::ifstream & input) 
{
//  std::cerr << "PG prima cerca " << std::endl ;
  std::string singleLine ;
  do {
    getline (input, singleLine,'\n') ;
//    std::cerr << "PG guardo " << singleLine << std::endl ;
  } while ((
             singleLine.find ('#',0) != std::string::npos || 
             singleLine.find ('=',0) == std::string::npos || 
             singleLine.size () < 3
           ) &&
           !input.eof ()) ;
//  std::cerr << "PG trovato " << singleLine << std::endl ;
  return singleLine ;
}


// ------------------------------------------------------------


void
trivialParser::print (std::string prefix) 
{
  std::cerr << "read parameters: " << std::endl ;
  for (std::map<std::string, double>::const_iterator mapIT = m_config.begin () ;
       mapIT != m_config.end () ;
       ++mapIT)
    {
      std::cerr << prefix << mapIT->first << " = " << mapIT->second << "\n" ;
    }
}


// ------------------------------------------------------------


void
trivialParser::eraseSpaces (std::string & word) 
{
  while (word.find (' ',0) != std::string::npos) 
    { 
      word.erase (word.find (' ',0), 1) ; 
    }
  return ;    
}