[Sass] Properly handle drive-letter paths.

Closes gh-191

doc-src/SASS_CHANGELOG.md

@@ -3,6 +3,11 @@
 * Table of contents
 {:toc}
 
+## 3.0.14 (Unreleased)
+
+* Properly parse paths with drive letters on Windows (e.g. `C:\Foo\Bar.sass`)
+  in the Sass executable.
+
 ## 3.0.13
 
 [Tagged on GitHub](http://github.com/nex3/haml/commit/3.0.12).

lib/haml/exec.rb

@@ -1,6 +1,5 @@
 require 'optparse'
 require 'fileutils'
-require 'rbconfig'
 
 module Haml
   # This module handles the various Haml executables (`haml`, `sass`, `sass-convert`, etc).
@@ -80,7 +79,7 @@ module Haml
           @options[:trace] = true
         end
 
-        if RbConfig::CONFIG['host_os'] =~ /mswin|windows/i
+        if ::Haml::Util.windows?
           opts.on('--unix-newlines', 'Use Unix-style newlines in written files.') do
             @options[:unix_newlines] = true
           end
@@ -338,9 +337,9 @@ END
       # and runs the Sass compiler appropriately.
       def process_result
         if !@options[:update] && !@options[:watch] &&
-            @args.first && @args.first.include?(':')
+            @args.first && colon_path?(@args.first)
           if @args.size == 1
-            @args = @args.first.split(':', 2)
+            @args = split_colon_path(@args.first)
           else
             @options[:update] = true
           end
@@ -389,7 +388,10 @@ END
         ::Sass::Plugin.options.merge! @options[:for_engine]
         ::Sass::Plugin.options[:unix_newlines] = @options[:unix_newlines]
 
-        if @args[1] && !@args[0].include?(':')
+        p [colon_path?(@args[0]), split_colon_path(@args[0])]
+        exit
+
+        if @args[1] && !colon_path?(@args[0])
           flag = @options[:update] ? "--update" : "--watch"
           err =
             if !File.exist?(@args[1])
@@ -403,7 +405,7 @@ File #{@args[1]} #{err}.
 MSG
         end
 
-        dirs, files = @args.map {|name| name.split(':', 2)}.
+        dirs, files = @args.map {|name| split_colon_path(name)}.
           partition {|i, _| File.directory? i}
         files.map! {|from, to| [from, to || from.gsub(/\..*?$/, '.css')]}
         dirs.map! {|from, to| [from, to || from]}
@@ -437,6 +439,22 @@ MSG
 
         ::Sass::Plugin.watch(files)
       end
+
+      def colon_path?(path)
+        !split_colon_path(path)[1].nil?
+      end
+
+      def split_colon_path(path)
+        one, two = path.split(':', 2)
+        if one && two && #::Haml::Util.windows? &&
+            one =~ /\A[A-Za-z]\Z/ && two =~ /\A[\/\\]/
+          # If we're on Windows and we were passed a drive letter path,
+          # don't split on that colon.
+          one2, two = two.split(':', 2)
+          one = one + ':' + one2
+        end
+        return one, two
+      end
     end
 
     # The `haml` executable.

lib/haml/util.rb

@@ -3,6 +3,8 @@ require 'set'
 require 'enumerator'
 require 'stringio'
 require 'strscan'
+require 'rbconfig'
+
 require 'haml/root'
 require 'haml/util/subset_map'
 
@@ -366,6 +368,15 @@ module Haml
       return ActionView::SafeBuffer
     end
 
+    ## Cross-OS Compatibility
+
+    # Whether or not this is running on Windows.
+    #
+    # @return [Boolean]
+    def windows?
+      RbConfig::CONFIG['host_os'] =~ /mswin|windows/i
+    end
+
     ## Cross-Ruby-Version Compatibility
 
     # Whether or not this is running under Ruby 1.8 or lower.

lib/sass/plugin.rb

@@ -1,5 +1,4 @@
 require 'fileutils'
-require 'rbconfig'
 
 require 'sass'
 require 'sass/plugin/configuration'
@@ -228,7 +227,7 @@ module Sass
 
       # Finally, write the file
       flag = 'w'
-      flag = 'wb' if RbConfig::CONFIG['host_os'] =~ /mswin|windows/i && options[:unix_newlines]
+      flag = 'wb' if Haml::Util.windows? && options[:unix_newlines]
       File.open(css, flag) {|file| file.print(result)}
     end