Class: SC::Builder::Sass

Inherits:
Base
  • Object
show all
Defined in:
lib/sproutcore/builders/sass.rb

Overview

This build can compile a Sass stylesheet. At this point it does no further processing than simply executing the Sass. It would be nice to add support for sc_static and other directives at some point.

Instance Attribute Summary

Attributes inherited from Base

#entry

Instance Method Summary collapse

Methods inherited from Base

build, #initialize, #joinlines, #readlines, #replace_static_url, #static_url, #writelines

Constructor Details

This class inherits a constructor from SC::Builder::Base

Instance Method Details

#build(dst_path) ⇒ Object 



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# File 'lib/sproutcore/builders/sass.rb', line 19

def build(dst_path)
  begin
    require 'sass'
  rescue
    raise "Cannot compile #{entry.source_path} because sass is not installed.  Please try 'sudo gem install haml' and try again"
  end

  begin
    content = readlines(entry.source_path)*''
    content = ::Sass::Engine.new(content).render
    writelines dst_path, [content]
  rescue Exception => e
    
    # explain sass syntax error a bit more...
    if e.is_a? Sass::SyntaxError
      e_string = "#{e.class}: #{e.message}"
      e_string << "\non line #{e.sass_line}"
      e_string << " of #{@entry.source_path}"
      if File.exists?(@entry.source_path)
        e_string << "\n\n"
        min = [e.sass_line - 5, 0].max
        File.read(@entry.source_path).rstrip.split("\n")[
          min .. e.sass_line + 5
        ].each_with_index do |line, i|
          e_string << "#{min + i + 1}: #{line}\n"
        end # File.read
      end # if File.exists?
      raise e_string
    else
      raise e # reraise
    end 
  end # rescue
end