src/gromacs/utility/fileredirector.cpp

   1 /*
   2  * This file is part of the GROMACS molecular simulation package.
   3  *
   4  * Copyright (c) 2015, by the GROMACS development team, led by
   5  * Mark Abraham, David van der Spoel, Berk Hess, and Erik Lindahl,
   6  * and including many others, as listed in the AUTHORS file in the
   7  * top-level source directory and at http://www.gromacs.org.
   8  *
   9  * GROMACS is free software; you can redistribute it and/or
  10  * modify it under the terms of the GNU Lesser General Public License
  11  * as published by the Free Software Foundation; either version 2.1
  12  * of the License, or (at your option) any later version.
  13  *
  14  * GROMACS is distributed in the hope that it will be useful,
  15  * but WITHOUT ANY WARRANTY; without even the implied warranty of
  16  * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the GNU
  17  * Lesser General Public License for more details.
  18  *
  19  * You should have received a copy of the GNU Lesser General Public
  20  * License along with GROMACS; if not, see
  21  * http://www.gnu.org/licenses, or write to the Free Software Foundation,
  22  * Inc., 51 Franklin Street, Fifth Floor, Boston, MA  02110-1301  USA.
  23  *
  24  * If you want to redistribute modifications to GROMACS, please
  25  * consider that scientific software is very special. Version
  26  * control is crucial - bugs must be traceable. We will be happy to
  27  * consider code for inclusion in the official distribution, but
  28  * derived work must not be called official GROMACS. Details are found
  29  * in the README & COPYING files - if they are missing, get the
  30  * official version at http://www.gromacs.org.
  31  *
  32  * To help us fund GROMACS development, we humbly ask that you cite
  33  * the research papers on the package. Check out http://www.gromacs.org.
  34  */
  35 /*! \internal \file
  36  * \brief
  37  * Implements classes and functions from fileredirector.h.
  38  *
  39  * \author Teemu Murtola <teemu.murtola@gmail.com>
  40  * \ingroup module_utility
  41  */
  42 #include "gmxpre.h"
  43
  44 #include "fileredirector.h"
  45
  46 #include "gromacs/utility/filestream.h"
  47 #include "gromacs/utility/path.h"
  48
  49 namespace gmx
  50 {
  51
  52 IFileInputRedirector::~IFileInputRedirector()
  53 {
  54 }
  55
  56 IFileOutputRedirector::~IFileOutputRedirector()
  57 {
  58 }
  59
  60 namespace
  61 {
  62
  63 /*! \internal
  64  * \brief
  65  * Implements the redirector returned by defaultFileInputRedirector().
  66  *
  67  * Does not redirect anything, but uses the file system as requested.
  68  *
  69  * \ingroup module_utility
  70  */
  71 class DefaultInputRedirector : public IFileInputRedirector
  72 {
  73     public:
  74         virtual bool fileExists(const char            *filename,
  75                                 File::NotFoundHandler  onNotFound) const
  76         {
  77             return File::exists(filename, onNotFound);
  78         }
  79 };
  80
  81 /*! \internal
  82  * \brief
  83  * Implements the redirector returned by defaultFileOutputRedirector().
  84  *
  85  * Does not redirect anything, but instead opens the files exactly as
  86  * requested.
  87  *
  88  * \ingroup module_utility
  89  */
  90 class DefaultOutputRedirector : public IFileOutputRedirector
  91 {
  92     public:
  93         virtual TextOutputStream &standardOutput()
  94         {
  95             return TextOutputFile::standardOutput();
  96         }
  97         virtual TextOutputStreamPointer openTextOutputFile(const char *filename)
  98         {
  99             return TextOutputStreamPointer(new TextOutputFile(filename));
 100         }
 101 };
 102
 103 }   // namespace
 104
 105 //! \cond libapi
 106 IFileInputRedirector &defaultFileInputRedirector()
 107 {
 108     static DefaultInputRedirector instance;
 109     return instance;
 110 }
 111
 112 IFileOutputRedirector &defaultFileOutputRedirector()
 113 {
 114     static DefaultOutputRedirector instance;
 115     return instance;
 116 }
 117 //! \endcond
 118
 119 } // namespace gmx