Added support for LESS dynamic CSS

CONTRIBUTORS.md

@@ -3,3 +3,4 @@
 * Martin Kuckert @MKuckert
 * Ivan Lazarevic @kopipejst
 * Matt DuVall @mduvall twitter:@mduvall_
+* Mekka Okereke @mekka @mekkaokereke 

Gemfile

@@ -6,6 +6,8 @@ gemspec
 # optional runtime dependencies
 gem "sass"
 gem "compass"
+gem "therubyracer"
+gem "less", :require => false
 
 gem "rake", :require => false
 gem "debugger"

lib/csscss/cli.rb

@@ -16,31 +16,64 @@ def run
       execute
     end
 
+    def gem_installed?(gem_name)
+      begin
+        require gem_name
+      rescue LoadError
+        return false
+      end
+      true
+    end
+
+    def load_sass_file(filename)
+      if !gem_installed?('sass') then
+        puts "Must install sass gem before parsing sass/scss files"
+        exit 1
+      end
+
+      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
+    end
+
+    def load_less_file(filename)
+      if !gem_installed?('less') then
+        puts "Must install less gem before parsing less files (try \"gem install less\", or add less to your Gemfile)"
+        exit 1
+      end
+
+      begin
+        contents = open(filename) {|f| f.read }
+        Less::Parser.new.parse(contents).to_css         
+      rescue Less::ParseError => e 
+        puts "Less parse error"
+        exit 1
+      end
+    end
+
+    def load_css_file(filename)
+      open(filename) {|f| f.read }
+    end
+
     def execute
       warn_old_debug_flag if ENV["CSSCSS_DEBUG"]
 
-      all_contents = @argv.map do |filename|
+      all_contents= @argv.map do |filename|
         if %w(.scss .sass).include?(File.extname(filename).downcase) && !(filename =~ URI.regexp)
-          begin
-            require "sass"
-          rescue LoadError
-            abort "Must install sass gem before parsing sass/scss files"
-          end
-
-          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
+          load_sass_file(filename)
+        elsif %w(.less).include?(File.extname(filename).downcase) && !(filename =~ URI.regexp) 
+          load_less_file(filename)
         else
-          open(filename) {|f| f.read }
+          load_css_file(filename)
         end
       end.join("\n")
 

test/csscss/cli_test.rb

@@ -0,0 +1,41 @@
+require "test_helper.rb"
+
+module Csscss
+
+  def less_gem_installed
+    begin
+      require "less"
+    rescue LoadError
+      puts "Less Gem does not appear to be installed. Skipping Less tests"           
+      false
+    end
+    true
+  end
+
+  describe CLI do 
+    it "parses valid less and sass files the same as css files" do
+      css_types = []
+
+      css_check = Csscss::CLI.new("filename")
+      css_file = css_check.load_css_file("test/csscss/test_input_files/test.css")
+      #css_types.push css_file
+
+      if (css_check.gem_installed?('less')) then
+        less_check = Csscss::CLI.new("filename")
+        less_file = less_check.load_less_file("test/csscss/test_input_files/test.less")     
+        css_types.push less_file
+      else
+        puts "Less not installed, skipping less parsing tests..."
+      end
+
+      if (css_check.gem_installed?('sass')) then
+        sass_check = Csscss::CLI.new("filename")
+        sass_file = sass_check.load_sass_file("test/csscss/test_input_files/test.sass")
+        css_types.push sass_file
+      else
+        puts "Sass not installed, skipping sass parsing tests..."
+      end
+
+    end
+  end
+end

test/csscss/test_input_files/test.css

@@ -0,0 +1,2 @@
+.me { border: 1px solid; }
+.me2 { border: 1px solid; }

test/csscss/test_input_files/test.less

@@ -0,0 +1,14 @@
+.me {
+  border: 1px solid;
+  font-family: Arial;
+  background: #005555;
+}
+
+.me2 
+{
+  border: 1px solid;
+  font-family: Arial;
+  background: #005555;
+}
+
+

test/csscss/test_input_files/test.sass

@@ -0,0 +1,13 @@
+.me 
+  border: 1px solid
+  font-family: Arial
+  background: #005555
+
+
+.me2 
+  border: 1px solid
+  font-family: Arial
+  background: #005555
+
+
+