filesystem.h

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/*
 * #%L
 * OME-COMMON C++ library for C++ compatibility/portability
 * %%
 * Copyright © 2006 - 2015 Open Microscopy Environment:
 *   - Massachusetts Institute of Technology
 *   - National Institutes of Health
 *   - University of Dundee
 *   - Board of Regents of the University of Wisconsin-Madison
 *   - Glencoe Software, Inc.
 * %%
 * 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.
 * 2. Redistributions in binary form must reproduce the above copyright notice,
 *    this list of conditions and the following disclaimer in the documentation
 *    and/or other materials provided with the distribution.
 *
 * THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS "AS IS"
 * AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
 * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
 * ARE DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT HOLDERS OR CONTRIBUTORS BE
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 */

#ifndef OME_COMMON_FILESYSTEM_H
# define OME_COMMON_FILESYSTEM_H

# include <ome/common/config.h>

#include <boost/filesystem/operations.hpp>
#include <boost/filesystem/path.hpp>

// Older versions use get_generic_category() in place of the new
// generic_category()
# ifdef OME_HAVE_BOOST_FILESYSTEM_CANONICAL
#  ifdef BOOST_SYSTEM_NO_DEPRECATED
#   undef BOOST_SYSTEM_NO_DEPRECATED
#  endif // BOOST_SYSTEM_NO_DEPRECATED
#  include <boost/system/error_code.hpp>
# endif // OME_HAVE_BOOST_FILESYSTEM_CANONICAL

namespace ome
{

  namespace common
  {

# ifdef OME_HAVE_BOOST_FILESYSTEM_ABSOLUTE
    using boost::filesystem::absolute;
# else // OME_HAVE_BOOST_FILESYSTEM_ABSOLUTE not defined

    inline
    boost::filesystem::path
    absolute(const boost::filesystem::path& p,
             const boost::filesystem::path& base = boost::filesystem::current_path())
    {
      return boost::filesystem::complete(p, base);
    }
# endif // OME_HAVE_BOOST_FILESYSTEM_ABSOLUTE

# ifdef OME_HAVE_BOOST_FILESYSTEM_CANONICAL
    using boost::filesystem::canonical;
# else // OME_HAVE_BOOST_FILESYSTEM_CANONICAL not defined
    // Implementation derived from boost 1.55.
    inline
    boost::filesystem::path
    canonical(const boost::filesystem::path& p,
              const boost::filesystem::path& base = boost::filesystem::current_path(),
              boost::system::error_code* ec = 0)
    {
      boost::filesystem::path source (absolute(p, base));
      boost::filesystem::path result;

      boost::system::error_code local_ec;
      boost::filesystem::file_status stat (status(source, local_ec));

      if (stat.type() == boost::filesystem::file_not_found)
        {
          if (ec == 0)
            throw boost::filesystem::filesystem_error
              ("boost::filesystem::canonical", source,
               boost::system::error_code(boost::system::errc::no_such_file_or_directory,
                                         boost::system::get_generic_category()));
          ec->assign(boost::system::errc::no_such_file_or_directory,
                     boost::system::get_generic_category());
          return result;
        }
      else if (local_ec)
        {
          if (ec == 0)
            throw(boost::filesystem::filesystem_error
                  ("boost::filesystem::canonical", source, local_ec));
          *ec = local_ec;
          return result;
        }
    }
# endif // OME_HAVE_BOOST_FILESYSTEM_CANONICAL
  }
}

#endif // OME_COMMON_FILESYSTEM_H

/*
 * Local Variables:
 * mode:C++
 * End:
 */