helpers/plugin.rb: New plugin mapping system

_maps added; demos adjusted

TODO updated

1 files changed, 36 insertions, 2 deletions

diff --git a/lib/coderay/helpers/plugin.rb b/lib/coderay/helpers/plugin.rb
index 63c3739..6fcfe35 100644
--- a/lib/coderay/helpers/plugin.rb
+++ b/lib/coderay/helpers/plugin.rb
@@ -69,6 +69,7 @@ module PluginHost
 	def plugin_path *args

 		unless args.empty?

 			@plugin_path = File.join(*args)

+			load_map

 		end

 		@plugin_path

 	end

@@ -110,6 +111,7 @@ module PluginHost
 		@plugin_hash ||= create_plugin_hash

 	end

 

+	# Makes a map of all loaded scanners.

 	def inspect

 		map = plugin_hash.dup

 		map.each do |id, plugin|

@@ -118,6 +120,32 @@ module PluginHost
 		map.inspect

 	end

 

+	# Map a plugin_id to another.

+	#

+	# Usage: Put this in a file plugin_path/_map.rb.

+	#

+	#  class MyColorHost < PluginHost

+	#    map :navy => :dark_blue,

+	#      :maroon => :brown,

+	#      :luna => :moon

+	#  end

+

+	def map hash

+		for from, to in hash

+			from = validate_id from

+			to = validate_id to

+			plugin_hash[from] = to unless plugin_hash.has_key? from

+		end

+	end

+

+	def load_map

+		begin

+			require path_to('_map')

+		rescue LoadError

+			warn 'no _map.rb found for %s' % name if $DEBUG

+		end

+	end

+

 

 	# Every plugin must register itself for one or more

 	# +ids+ by calling register_for, which calls this method.

@@ -138,7 +166,9 @@ module PluginHost
 	# 

 	# The extension .rb is not included.

 	def all_plugin_names

-		Dir[path_to('*')].map do |file|

+		Dir[path_to('*')].select do |file|

+			File.basename(file)[/^(?!_)\w+\.rb$/]

+		end.map do |file|

 			File.basename file, '.rb'

 		end

 	end

@@ -156,7 +186,11 @@ module PluginHost
 	# Example:

 	#  yaml_plugin = MyPluginHost[:yaml]

 	def [] id, *args, &blk

-		plugin_hash.[] validate_id(id), *args, &blk

+		plugin = validate_id(id)

+		begin

+			plugin = plugin_hash.[] plugin, *args, &blk

+		end while plugin.is_a? Symbol

+		plugin

 	end

 

 	# Alias for +[]+.