removing the active_support (and therefore rails) dependency from Jam…

…mit altogether

jammit.gemspec

@@ -27,7 +27,6 @@ Gem::Specification.new do |s|
                          '--main'     << 'README' <<
                          '--all'
 
-  s.add_dependency 'rails',             ['>= 2.0.0']
   s.add_dependency 'yui-compressor',    ['>= 0.9.1']
   s.add_dependency 'closure-compiler',  ['>= 0.1.0']
 

lib/jammit.rb

@@ -62,18 +62,20 @@ def self.load_configuration(config_path)
     raise ConfigurationNotFound, "could not find the \"#{config_path}\" configuration file" unless exists
     conf = YAML.load(ERB.new(File.read(config_path)).result)
     @config_path            = config_path
-    @configuration          = conf = conf.symbolize_keys
+    @configuration          = symbolize_keys(conf)
     @package_path           = conf[:package_path] || DEFAULT_PACKAGE_PATH
     @embed_assets           = conf[:embed_assets] || conf[:embed_images]
     @compress_assets        = !(conf[:compress_assets] == false)
     @gzip_assets            = !(conf[:gzip_assets] == false)
     @mhtml_enabled          = @embed_assets && @embed_assets != "datauri"
-    @compressor_options     = (conf[:compressor_options] || {}).symbolize_keys
-    @css_compressor_options = (conf[:css_compressor_options] || {}).symbolize_keys
+    @compressor_options     = symbolize_keys(conf[:compressor_options] || {})
+    @css_compressor_options = symbolize_keys(conf[:css_compressor_options] || {})
     set_javascript_compressor(conf[:javascript_compressor])
     set_package_assets(conf[:package_assets])
     set_template_function(conf[:template_function])
     set_template_namespace(conf[:template_namespace])
+    symbolize_keys(conf[:stylesheets]) if conf[:stylesheets]
+    symbolize_keys(conf[:javascripts]) if conf[:javascripts]
     check_java_version
     check_for_deprecations
     self
@@ -163,6 +165,15 @@ def self.warn(message)
     @logger ? @logger.warn(message) : STDERR.puts(message)
   end
 
+  # Clone of active_support's symbolize_keys, so that we don't have to depend
+  # on active_support in any fashion. Converts a hash's keys to all symbols.
+  def self.symbolize_keys(hash)
+    hash.keys.each do |key|
+      hash[(key.to_sym rescue key) || key] = hash.delete(key)
+    end
+    hash
+  end
+
 end
 
 require 'jammit/dependencies'

lib/jammit/compressor.rb

@@ -173,7 +173,7 @@ def relative_path(absolute_path)
     # append the RAILS_ASSET_ID cache-buster to URLs, if it's defined.
     def rewrite_asset_path(path, file_path)
       asset_id = rails_asset_id(file_path)
-      asset_id.blank? ? path : "#{path}?#{asset_id}"
+      (!asset_id || asset_id == '') ? path : "#{path}?#{asset_id}"
     end
 
     # Similar to the AssetTagHelper's method of the same name, this will

lib/jammit/dependencies.rb

@@ -2,16 +2,14 @@
 require 'uri'
 require 'erb'
 require 'zlib'
+require 'yaml'
 require 'base64'
 require 'pathname'
 require 'fileutils'
 
-require 'yaml'
-
 # Gem Dependencies:
 require 'yui/compressor'
 require 'closure-compiler'
-require 'active_support/core_ext'
 
 # Load initial configuration before the rest of Jammit.
 Jammit.load_configuration(Jammit::DEFAULT_CONFIG_PATH) if defined?(Rails)

lib/jammit/packager.rb

@@ -21,8 +21,8 @@ def initialize
       @compressor = Compressor.new
       @force = false
       @config = {
-        :css => (Jammit.configuration[:stylesheets] || {}).symbolize_keys,
-        :js  => (Jammit.configuration[:javascripts] || {}).symbolize_keys
+        :css => (Jammit.configuration[:stylesheets] || {}),
+        :js  => (Jammit.configuration[:javascripts] || {})
       }
       @packages = {
         :css => create_packages(@config[:css]),