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// Filesystem operation utilities -*- C++ -*-
// Copyright (C) 2014-2017 Free Software Foundation, Inc.
//
// This file is part of the GNU ISO C++ Library. This library 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 3, or (at your option)
// any later version.
// This library 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.
// Under Section 7 of GPL version 3, you are granted additional
// permissions described in the GCC Runtime Library Exception, version
// 3.1, as published by the Free Software Foundation.
// You should have received a copy of the GNU General Public License and
// a copy of the GCC Runtime Library Exception along with this program;
// see the files COPYING3 and COPYING.RUNTIME respectively. If not, see
// <http://www.gnu.org/licenses/>.
#ifndef _GLIBCXX_OPS_COMMON_H
#define _GLIBCXX_OPS_COMMON_H 1
#include <chrono>
#ifdef _GLIBCXX_HAVE_UNISTD_H
# include <unistd.h>
# if defined(_GLIBCXX_HAVE_SYS_STAT_H) && defined(_GLIBCXX_HAVE_SYS_TYPES_H)
# include <sys/types.h>
# include <sys/stat.h>
# endif
#endif
namespace std _GLIBCXX_VISIBILITY(default)
{
_GLIBCXX_BEGIN_NAMESPACE_VERSION
namespace filesystem
{
template<typename Bitmask>
inline bool is_set(Bitmask obj, Bitmask bits)
{
return (obj & bits) != Bitmask::none;
}
inline bool
is_not_found_errno(int err) noexcept
{
return err == ENOENT || err == ENOTDIR;
}
#ifdef _GLIBCXX_HAVE_SYS_STAT_H
typedef struct ::stat stat_type;
inline std::chrono::system_clock::time_point
file_time(const stat_type& st, std::error_code& ec) noexcept
{
using namespace std::chrono;
#ifdef _GLIBCXX_USE_ST_MTIM
time_t s = st.st_mtim.tv_sec;
nanoseconds ns{st.st_mtim.tv_nsec};
#else
time_t s = st.st_mtime;
nanoseconds ns{};
#endif
if (s >= (nanoseconds::max().count() / 1e9))
{
ec = std::make_error_code(std::errc::value_too_large); // EOVERFLOW
return system_clock::time_point::min();
}
ec.clear();
return system_clock::time_point{seconds{s} + ns};
}
struct copy_options_existing_file
{
bool skip, update, overwrite;
};
bool
do_copy_file(const char* from, const char* to,
copy_options_existing_file options,
stat_type* from_st, stat_type* to_st,
std::error_code& ec) noexcept;
#endif // _GLIBCXX_HAVE_SYS_STAT_H
} // namespace filesystem
// BEGIN/END macros must be defined before including this file.
_GLIBCXX_BEGIN_NAMESPACE_FILESYSTEM
#ifdef _GLIBCXX_HAVE_SYS_STAT_H
typedef struct ::stat stat_type;
inline file_type
make_file_type(const stat_type& st) noexcept
{
#ifdef _GLIBCXX_HAVE_S_ISREG
if (S_ISREG(st.st_mode))
return file_type::regular;
else if (S_ISDIR(st.st_mode))
return file_type::directory;
else if (S_ISCHR(st.st_mode))
return file_type::character;
else if (S_ISBLK(st.st_mode))
return file_type::block;
else if (S_ISFIFO(st.st_mode))
return file_type::fifo;
else if (S_ISLNK(st.st_mode))
return file_type::symlink;
#ifdef S_ISSOCK // not present until POSIX:2001
else if (S_ISSOCK(st.st_mode))
return file_type::socket;
#endif
#endif
return file_type::unknown;
}
inline file_status
make_file_status(const stat_type& st) noexcept
{
return file_status{
make_file_type(st),
static_cast<perms>(st.st_mode) & perms::mask
};
}
inline std::filesystem::copy_options_existing_file
copy_file_options(copy_options opt)
{
using std::filesystem::is_set;
return {
is_set(opt, copy_options::skip_existing),
is_set(opt, copy_options::update_existing),
is_set(opt, copy_options::overwrite_existing)
};
}
#endif // _GLIBCXX_HAVE_SYS_STAT_H
_GLIBCXX_END_NAMESPACE_FILESYSTEM
_GLIBCXX_END_NAMESPACE_VERSION
} // namespace std
#endif // _GLIBCXX_OPS_COMMON_H
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