-- This file is part of a Liberty Eiffel library.
-- See the full copyright at the end.
--
class CYGWIN_DIRECTORY_NOTATION
   -- The Cygwin like file path notation looks like:
   --   //C/LibertyEiffel/sys/system.se
   --|*** I've never seen this notation. My cygwin uses plain old unix
   --|*** notation, windows drives are mapped to /cygdrive/c/ etc...
   --|*** <FM-23/03/2003>
   --|*** AFAIR that's the old b20 series <CAD 2005.11.18>

inherit
   DIRECTORY_NOTATION

feature {ANY}
   is_current_directory (path: STRING): BOOLEAN
      do
         if path.compare(once ".") = 0 or else path.compare(once "./") = 0 then
            Result := True
         else
            Result := path.occurrences('.') + path.occurrences('/') = path.count and not path.has_substring("..")
         end
      end

   is_parent_directory (path: STRING): BOOLEAN
      local
         pos: INTEGER
      do
         if path.compare(once "..") = 0 or else path.compare(once "../") = 0 then
            Result := True
         else
            Result := path.occurrences('.') + path.occurrences('/') = path.count and path.has_substring("..")
            if Result then
               pos := path.first_substring_index("..")
               Result := Result and path.substring_index("..", pos + 2) = 0
            end
         end
      end

   to_parent_directory (some_path: STRING)
      do
         --|*** "." and ".." are not handled correctly <FM-24/03/2005>
         from
            some_path.remove_last
         until
            some_path.is_empty or else some_path.last = '/' or else some_path.last = ':'
         loop
            some_path.remove_last
         end
         if some_path.is_empty then
         elseif some_path.first = '/' then
            if some_path.count = 2 then
               if some_path.item(2) = '/' then
                  some_path.remove_last
               end
            end
         end
         if not some_path.is_empty then
            some_path.extend_unless('/')
         end
      end

   to_subdirectory_with (parent_path, entry_name: STRING)
      do
         if (once ".").is_equal(entry_name) then
            -- Because you would get the same directory as `parent_path' and
            -- not a new subdirectory as explained before.
            parent_path.clear_count
         elseif (once "..").is_equal(entry_name) then
            -- Because you would not get a subdirectory of `parent_path'.
            parent_path.clear_count
         else
            parent_path.extend_unless('/')
            if entry_name.first = '/' then
               parent_path.remove_last
            end
            parent_path.append(entry_name)
            parent_path.extend_unless('/')
         end
      end

   to_file_path_with (parent_path, file_name: STRING)
      do
         parent_path.extend_unless('/')
         if file_name.first = '/' then
            parent_path.remove_last
         end
         parent_path.append(file_name)
      end

   to_subpath_with (parent_path, subpath: STRING)
      do
         parent_path.extend_unless('/')
         parent_path.append(subpath)
      end

   to_directory_path (path: STRING)
      do
         path.extend_unless('/')
      end

   to_short_name_in (buffer, path: STRING)
      local
         i: INTEGER
      do
         buffer.copy(path)
         if buffer.last = '/' then
            buffer.remove_last
         end
         i := buffer.last_index_of('/')
         if i >= 0 then
            buffer.shrink(i + 1, buffer.count)
         end
      end

feature {ANY}
   can_map_drive (source_notation: DIRECTORY_NOTATION; drive: STRING): BOOLEAN
      do
         --|*** We (c/sh)ould do better than nothing... <24/03/2005>
      end

   to_root (source_notation: DIRECTORY_NOTATION; drive: STRING)
      do
         check
            False
         end
      end

   to_default_root (directory: STRING)
      do
         directory.clear_count
         directory.extend('/')
      end

   to_current_directory (directory: STRING)
      do
         directory.clear_count
         directory.extend('.')
      end

feature {ANY}
   is_case_sensitive: BOOLEAN True
         --|*** Is it ? <FM-23/03/2003>

   is_valid_path, is_valid_directory_path (path: STRING): BOOLEAN
      do
         --|*** Not nearly strict enough <FM-24/03/2003>
         Result := not path.is_empty
      end

   is_valid_file_name (name: STRING): BOOLEAN
      do
         --|*** Not nearly strict enough <FM-24/03/2003>
         Result := not name.is_empty
      end

   is_absolute_path (path: STRING): BOOLEAN
      do
         Result := path.first = '/'
      end

feature {DIRECTORY_NOTATION}
   to_notation (path: STRING; destination_notation: DIRECTORY_NOTATION): STRING
      do
         not_yet_implemented
      end

end -- class CYGWIN_DIRECTORY_NOTATION
--
-- Copyright (C) 2009-2017: by all the people cited in the AUTHORS file.
--
-- Permission is hereby granted, free of charge, to any person obtaining a copy
-- of this software and associated documentation files (the "Software"), to deal
-- in the Software without restriction, including without limitation the rights
-- to use, copy, modify, merge, publish, distribute, sublicense, and/or sell
-- copies of the Software, and to permit persons to whom the Software is
-- furnished to do so, subject to the following conditions:
--
-- The above copyright notice and this permission notice shall be included in
-- all copies or substantial portions of the Software.
--
-- THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR
-- IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,
-- FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL THE
-- AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER
-- LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM,
-- OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN
-- THE SOFTWARE.