Froze rails gems

[depot.git] / vendor / rails / activesupport / lib / active_support / cache / file_store.rb

diff --git a/vendor/rails/activesupport/lib/active_support/cache/file_store.rb b/vendor/rails/activesupport/lib/active_support/cache/file_store.rb
new file mode 100644 (file)
index 0000000..7f34cb5
--- /dev/null
+++ b/vendor/rails/activesupport/lib/active_support/cache/file_store.rb
@@ -0,0 +1,72 @@
+module ActiveSupport
+  module Cache
+    # A cache store implementation which stores everything on the filesystem.
+    class FileStore < Store
+      attr_reader :cache_path
+
+      def initialize(cache_path)
+        @cache_path = cache_path
+      end
+
+      def read(name, options = nil)
+        super
+        File.open(real_file_path(name), 'rb') { |f| Marshal.load(f) } rescue nil
+      end
+
+      def write(name, value, options = nil)
+        super
+        ensure_cache_path(File.dirname(real_file_path(name)))
+        File.atomic_write(real_file_path(name), cache_path) { |f| Marshal.dump(value, f) }
+        value
+      rescue => e
+        logger.error "Couldn't create cache directory: #{name} (#{e.message})" if logger
+      end
+
+      def delete(name, options = nil)
+        super
+        File.delete(real_file_path(name))
+      rescue SystemCallError => e
+        # If there's no cache, then there's nothing to complain about
+      end
+
+      def delete_matched(matcher, options = nil)
+        super
+        search_dir(@cache_path) do |f|
+          if f =~ matcher
+            begin
+              File.delete(f)
+            rescue SystemCallError => e
+              # If there's no cache, then there's nothing to complain about
+            end
+          end
+        end
+      end
+
+      def exist?(name, options = nil)
+        super
+        File.exist?(real_file_path(name))
+      end
+
+      private
+        def real_file_path(name)
+          '%s/%s.cache' % [@cache_path, name.gsub('?', '.').gsub(':', '.')]
+        end
+
+        def ensure_cache_path(path)
+          FileUtils.makedirs(path) unless File.exist?(path)
+        end
+
+        def search_dir(dir, &callback)
+          Dir.foreach(dir) do |d|
+            next if d == "." || d == ".."
+            name = File.join(dir, d)
+            if File.directory?(name)
+              search_dir(name, &callback)
+            else
+              callback.call name
+            end
+          end
+        end
+    end
+  end
+end