rules_collection.rb in nanoc-3.7.0

- old
+ new

@@ -26,21 +26,25 @@
     # ordered: iterating over the hash will happen in insertion order.
     #
     # @return [Hash] The layout-to-filter mapping rules
     attr_reader :layout_filter_mapping
 
-    # @return [Proc] The code block that will be executed after all data is
-    #   loaded but before the site is compiled
-    attr_accessor :preprocessor
+    # The hash containing preprocessor code blocks that will be executed after
+    #   all data is loaded but before the site is compiled.
+    #
+    # @return [Hash] The hash containing the preprocessor code blocks that will
+    #   be executed after all data is loaded but before the site is compiled
+    attr_accessor :preprocessors
 
     # @param [Nanoc::Compiler] compiler The site’s compiler
     def initialize(compiler)
       @compiler = compiler
 
-      @item_compilation_rules  = []
-      @item_routing_rules      = []
-      @layout_filter_mapping   = OrderedHash.new
+      @item_compilation_rules = []
+      @item_routing_rules     = []
+      @layout_filter_mapping  = OrderedHash.new
+      @preprocessors          = OrderedHash.new
     end
 
     # Add the given rule to the list of item compilation rules.
     #
     # @param [Nanoc::Rule] rule The item compilation rule to add
@@ -74,23 +78,32 @@
       # Find rules file
       rules_filenames = [ 'Rules', 'rules', 'Rules.rb', 'rules.rb' ]
       rules_filename = rules_filenames.find { |f| File.file?(f) }
       raise Nanoc::Errors::NoRulesFileFound.new if rules_filename.nil?
 
+      parse(rules_filename)
+    end
+
+    def parse(rules_filename)
+      rules_filename = File.absolute_path(rules_filename)
+
       # Get rule data
       @data = File.read(rules_filename)
 
-      # Load DSL
-      dsl.instance_eval(@data, "./#{rules_filename}")
+      old_rules_filename = dsl.rules_filename
+      dsl.rules_filename = rules_filename
+      dsl.instance_eval(@data, rules_filename)
+      dsl.rules_filename = old_rules_filename
     end
 
     # Unloads this site’s rules.
     #
     # @return [void]
     def unload
-      @item_compilation_rules  = []
-      @item_routing_rules      = []
-      @layout_filter_mapping   = OrderedHash.new
+      @item_compilation_rules = []
+      @item_routing_rules     = []
+      @layout_filter_mapping  = OrderedHash.new
+      @preprocessors          = OrderedHash.new
     end
 
     # Finds the first matching compilation rule for the given item
     # representation.
     #