X-Git-Url: https://projects.mako.cc/source/selectricity-live/blobdiff_plain/a12d4f62752f546f57421244e370e79965706ffb..f7aee769411a893c1059c529a220c0d25c72974f:/vendor/plugins/engines/lib/engines/dependencies_extensions.rb

diff --git a/vendor/plugins/engines/lib/engines/dependencies_extensions.rb b/vendor/plugins/engines/lib/engines/dependencies_extensions.rb
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index 0000000..99be564
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+++ b/vendor/plugins/engines/lib/engines/dependencies_extensions.rb
@@ -0,0 +1,129 @@
+module ::Dependencies
+  
+  # we're going to intercept the require_or_load method; lets
+  # make an alias for the current method so we can use it as the basis
+  # for loading from engines.
+  alias :rails_pre_engines_require_or_load :require_or_load
+  
+  def require_or_load(file_name)
+    if Engines.config(:edge)
+      rails_edge_require_or_load(file_name)
+    
+    elsif Rails::VERSION::STRING =~ /^1.1/
+      # otherwise, assume we're on trunk (1.1 at the moment)
+      rails_1_1_require_or_load(file_name)
+    
+    elsif Rails::VERSION::STRING =~ /^1.0/
+      # use the old dependency load method
+      rails_1_0_require_or_load(file_name)
+    end
+  end
+  
+  def rails_edge_require_or_load(file_name)
+    rails_1_1_require_or_load(file_name)
+  end
+  
+  def rails_1_1_require_or_load(file_name)
+    Engines.log.debug("Engines 1.1 require_or_load: #{file_name}")
+
+    found = false
+
+    # try and load the engine code first
+    # can't use model, as there's nothing in the name to indicate that the file is a 'model' file
+    # rather than a library or anything else.
+    ['controller', 'helper'].each do |type| 
+      # if we recognise this type
+      # (this regexp splits out the module/filename from any instances of app/#{type}, so that
+      #  modules are still respected.)
+      if file_name =~ /^(.*app\/#{type}s\/)?(.*_#{type})(\.rb)?$/
+ 
+        # ... go through the active engines from first started to last, so that
+        # code with a high precidence (started later) will override lower precidence
+        # implementations
+        Engines.each(:load_order) do |engine|
+ 
+          engine_file_name = File.expand_path(File.join(engine.root, 'app', "#{type}s", $2))
+          #engine_file_name = $1 if engine_file_name =~ /^(.*)\.rb$/
+          Engines.log.debug("checking engine '#{engine.name}' for '#{engine_file_name}'")
+          if File.exist?("#{engine_file_name}.rb")
+            Engines.log.debug("==> loading from engine '#{engine.name}'")
+            rails_pre_engines_require_or_load(engine_file_name)
+            found = true
+          end
+        end
+      end 
+    end
+    
+    # finally, load any application-specific controller classes using the 'proper'
+    # rails load mechanism, EXCEPT when we're testing engines and could load this file
+    # from an engine
+    rails_pre_engines_require_or_load(file_name) unless Engines.disable_app_code_mixing && found
+  end
+  
+  def rails_1_0_require_or_load(file_name)
+    file_name = $1 if file_name =~ /^(.*)\.rb$/
+
+    Engines.log.debug "Engines 1.0.0 require_or_load '#{file_name}'"
+
+    # if the file_name ends in "_controller" or "_controller.rb", strip all
+    # path information out of it except for module context, and load it. Ditto
+    # for helpers.
+    found = if file_name =~ /_controller(.rb)?$/
+      require_engine_files(file_name, 'controller')
+    elsif file_name =~ /_helper(.rb)?$/ # any other files we can do this with?
+      require_engine_files(file_name, 'helper')
+    end
+    
+    # finally, load any application-specific controller classes using the 'proper'
+    # rails load mechanism, EXCEPT when we're testing engines and could load this file
+    # from an engine
+    Engines.log.debug("--> loading from application: '#{file_name}'")
+    rails_pre_engines_require_or_load(file_name) unless Engines.disable_app_code_mixing && found
+    Engines.log.debug("--> Done loading.")
+  end
+  
+  # Load the given file (which should be a path to be matched from the root of each
+  # engine) from all active engines which have that file.
+  # NOTE! this method automagically strips file_name up to and including the first
+  # instance of '/app/controller'. This should correspond to the app/controller folder
+  # under RAILS_ROOT. However, if you have your Rails application residing under a
+  # path which includes /app/controller anyway, such as:
+  #
+  #   /home/username/app/controller/my_web_application # == RAILS_ROOT
+  #
+  # then you might have trouble. Sorry, just please don't have your web application
+  # running under a path like that.
+  def require_engine_files(file_name, type='')
+    found = false
+    Engines.log.debug "requiring #{type} file '#{file_name}'"
+    processed_file_name = file_name.gsub(/[\w\W\/\.]*app\/#{type}s\//, '')    
+    Engines.log.debug "--> rewrote to '#{processed_file_name}'"
+    Engines.each(:load_order) do |engine|
+      engine_file_name = File.join(engine.root, 'app', "#{type}s", processed_file_name)
+      engine_file_name += '.rb' unless ! load? || engine_file_name[-3..-1] == '.rb'
+      Engines.log.debug "--> checking '#{engine.name}' for #{engine_file_name}"
+      if File.exist?(engine_file_name) || 
+        (engine_file_name[-3..-1] != '.rb' && File.exist?(engine_file_name + '.rb'))
+        Engines.log.debug "--> found, loading from engine '#{engine.name}'"
+        rails_pre_engines_require_or_load(engine_file_name)
+        found = true
+      end
+    end
+    found
+  end
+end
+
+
+# We only need to deal with LoadingModules in Rails 1.0.0
+if Rails::VERSION::STRING =~ /^1.0/ && !Engines.config(:edge)
+  module ::Dependencies
+    class RootLoadingModule < LoadingModule
+      # hack to allow adding to the load paths within the Rails Dependencies mechanism.
+      # this allows Engine classes to be unloaded and loaded along with standard
+      # Rails application classes.
+      def add_path(path)
+        @load_paths << (path.kind_of?(ConstantLoadPath) ? path : ConstantLoadPath.new(path))
+      end
+    end
+  end
+end
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