Class: ActiveSupport::EventedFileUpdateChecker::PathHelper
- Defined in:
- lib/active_support/evented_file_update_checker.rb
Instance Method Summary collapse
-
#existing_parent(dir) ⇒ Object
Returns the deepest existing ascendant, which could be the argument itself.
-
#filter_out_descendants(dirs) ⇒ Object
Filters out directories which are descendants of others in the collection (stable).
-
#longest_common_subpath(paths) ⇒ Object
Given a collection of Pathname objects returns the longest subpath common to all of them, or
nil
if there is none. - #normalize_extension(ext) ⇒ Object
- #xpath(path) ⇒ Object
Instance Method Details
#existing_parent(dir) ⇒ Object
Returns the deepest existing ascendant, which could be the argument itself.
165 166 167 168 169 |
# File 'lib/active_support/evented_file_update_checker.rb', line 165 def existing_parent(dir) dir.ascend do |ascendant| break ascendant if ascendant.directory? end end |
#filter_out_descendants(dirs) ⇒ Object
Filters out directories which are descendants of others in the collection (stable).
172 173 174 175 176 177 178 179 180 181 182 183 184 185 186 187 188 |
# File 'lib/active_support/evented_file_update_checker.rb', line 172 def filter_out_descendants(dirs) return dirs if dirs.length < 2 dirs_sorted_by_nparts = dirs.sort_by { |dir| dir.each_filename.to_a.length } descendants = [] until dirs_sorted_by_nparts.empty? dir = dirs_sorted_by_nparts.shift dirs_sorted_by_nparts.reject! do |possible_descendant| ascendant_of?(dir, possible_descendant) && descendants << possible_descendant end end # Array#- preserves order. dirs - descendants end |
#longest_common_subpath(paths) ⇒ Object
Given a collection of Pathname objects returns the longest subpath common to all of them, or nil
if there is none.
143 144 145 146 147 148 149 150 151 152 153 154 155 156 157 158 159 160 161 162 |
# File 'lib/active_support/evented_file_update_checker.rb', line 143 def longest_common_subpath(paths) return if paths.empty? lcsp = Pathname.new(paths[0]) paths[1..-1].each do |path| until ascendant_of?(lcsp, path) if lcsp.root? # If we get here a root directory is not an ascendant of path. # This may happen if there are paths in different drives on # Windows. return else lcsp = lcsp.parent end end end lcsp end |
#normalize_extension(ext) ⇒ Object
137 138 139 |
# File 'lib/active_support/evented_file_update_checker.rb', line 137 def normalize_extension(ext) ext.to_s.sub(/\A\./, '') end |
#xpath(path) ⇒ Object
133 134 135 |
# File 'lib/active_support/evented_file_update_checker.rb', line 133 def xpath(path) Pathname.new(path). end |