Entree_Fichier_base.cpp

/****************************************************************************
* Copyright (c) 2026, CEA
* All rights reserved.
*
* Redistribution and use in source and binary forms, with or without modification, are permitted provided that the following conditions are met:
* 1. Redistributions of source code must retain the above copyright notice, this list of conditions and the following disclaimer.
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#include <Entree_Fichier_base.h>
#include <Process.h>
#include <Nom.h>
#include <sys/stat.h>
#ifndef LATATOOLS
#include <EntreeSortie.h>
#endif
 
Implemente_base_sans_constructeur_ni_destructeur(Entree_Fichier_base,"Entree_Fichier_base",Objet_U);
 
Entree& Entree_Fichier_base::readOn(Entree& s)
{
  throw;
}
 
Sortie& Entree_Fichier_base::printOn(Sortie& s) const
{
  throw;
}
Entree_Fichier_base::Entree_Fichier_base()
{
  ifstream_=0;
}
 
bool fileExists(const char* name)
{
  struct stat buffer;
  if (stat(name, &buffer) == 0 && S_ISREG(buffer.st_mode))
    return true;
  else
    return false;
}
Entree_Fichier_base::Entree_Fichier_base(const char* name,IOS_OPEN_MODE mode)
{
  ifstream_ = new ifstream(name, mode);
  if(ifstream_->fail() || !fileExists(name))
    {
      Cerr << "Error while opening the file " << name << finl;
      Process::exit();
    }
  set_istream(ifstream_);
}
 
ifstream& Entree_Fichier_base::get_ifstream()
{
  return *ifstream_;
}
 
Entree_Fichier_base::~Entree_Fichier_base()
{
  Entree_Fichier_base::close();
}
 
int Entree_Fichier_base::ouvrir(const char* name, IOS_OPEN_MODE mode)
{
  if(ifstream_)
    delete ifstream_;
  IOS_OPEN_MODE ios_mod=mode;
  if (bin_)
    {
      ios_mod=ios_mod|ios::binary;
    }
  ifstream_ = new ifstream(name,ios_mod);
  int ok = ifstream_->good() && fileExists(name);
  set_istream(ifstream_);
 
  if (bin_)
    {
      Nom test;
      (*this) >> test;
      if (test == "INT64")
        {
          is_64b_ = true;
#ifndef INT_is_64_
          Cerr<<"Opening " <<name<< " which is an int64 binary file..."<<finl;
#endif
        }
      else
        {
          is_64b_ = false;
#ifdef INT_is_64_
          Cerr<<"Opening " <<name<< " which is an int32 binary file..."<<finl;
#endif
          // rewind, to go back at begining of file:
          delete ifstream_;
          ifstream_ = new ifstream(name,ios_mod);
          ok = ifstream_->good() && fileExists(name);
          set_istream(ifstream_);
        }
    }
  return ok;
}
 
void Entree_Fichier_base::close()
{
  if(ifstream_)
    {
      ifstream_->close();
      // on ne detruit pas ifstream ca sera fait par entree
      //      delete ifstream_;
    }
}
 
int Entree_Fichier_base::eof()
{
  if(ifstream_)
    return ifstream_->eof();
  else
    return -1;
}
 
int Entree_Fichier_base::fail()
{
  if(ifstream_)
    return ifstream_->fail();
  else
    return -1;
}
 
int Entree_Fichier_base::good()
{
  if(ifstream_)
    return ifstream_->good();
  else
    return -1;
}
 
void Entree_Fichier_base::precision(int pre)
{
  if(ifstream_)
    ifstream_->precision(pre);
}
 
void Entree_Fichier_base::setf(IOS_FORMAT code)
{
  if(ifstream_)
    ifstream_->setf(code);
}
 
/*! @brief Return True if the file can be opened for reading, false otherwise.
 *
 */
bool Entree_Fichier_base::Can_be_read(const char * name)
{
  std::ifstream ifs(name,ios::in);
  return ifs.good();
}