Enables compass extensions when parsing sass files

I thought the previous implementation was too naive

Author: zmoazeni

Gemfile

@@ -3,7 +3,9 @@ source 'https://rubygems.org'
 # Specify your gem's dependencies in csscss.gemspec
 gemspec
 
-gem "sass" # this is an optional runtime dependency
+# optional runtime dependencies
+gem "sass"
+gem "compass"
 
 gem "rake", :require => false
 gem "debugger"

Gemfile.lock

@@ -9,14 +9,20 @@ GEM
   remote: https://rubygems.org/
   specs:
     blankslate (2.1.2.4)
+    chunky_png (1.2.7)
     colorize (0.5.8)
     columnize (0.3.6)
+    compass (0.12.2)
+      chunky_png (~> 1.2)
+      fssm (>= 0.2.7)
+      sass (~> 3.1)
     debugger (1.5.0)
       columnize (>= 0.3.1)
       debugger-linecache (~> 1.2.0)
       debugger-ruby_core_source (~> 1.2.0)
     debugger-linecache (1.2.0)
     debugger-ruby_core_source (1.2.0)
+    fssm (0.2.10)
     m (1.3.1)
       method_source (>= 0.6.7)
       rake (>= 0.9.2.2)
@@ -33,6 +39,7 @@ PLATFORMS
   ruby
 
 DEPENDENCIES
+  compass
   csscss!
   debugger
   m

lib/csscss/cli.rb

@@ -5,6 +5,7 @@ def initialize(argv)
       @verbose = false
       @color   = true
       @minimum = 3
+      @compass = false
     end
 
     def run
@@ -23,7 +24,18 @@ def execute
             exit 1
           end
 
-          Sass::Engine.for_file(filename, {cache:false}).render
+          sass_options = {cache:false}
+          sass_options[:load_paths] = Compass.configuration.sass_load_paths if @compass
+          begin
+            Sass::Engine.for_file(filename, sass_options).render
+          rescue Sass::SyntaxError => e
+            if e.message =~ /compass/ && !@compass
+              puts "Enable --compass option to use compass's extensions"
+              exit 1
+            else
+              raise e
+            end
+          end
         else
           open(filename) {|f| f.read }
         end
@@ -76,6 +88,17 @@ def parse(argv)
           exit
         end
 
+        opts.on("--[no-]compass", "Enables compass extensions when parsing sass/scss") do |compass|
+          if @compass = compass
+            begin
+              require "compass"
+            rescue LoadError
+              puts "Must install compass gem before enabling its extensions"
+              exit 1
+            end
+          end
+        end
+
         opts.on("-j", "--[no-]json", "Output results in JSON") do |j|
           @json = j
         end