1 files changed, 148 insertions, 0 deletions
diff --git a/libstdc++-v3/src/filesystem/ops-common.h b/libstdc++-v3/src/filesystem/ops-common.h
new file mode 100644
index 00000000000..12c12b08f8c
--- /dev/null
+++ b/libstdc++-v3/src/filesystem/ops-common.h
@@ -0,0 +1,148 @@
+// 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;
+    else if (S_ISSOCK(st.st_mode))
+      return file_type::socket;
+#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