Class: Octopress::RenderCode::Tag

Inherits:
Liquid::Tag
  • Object
show all
Defined in:
lib/octopress-render-code.rb

Constant Summary collapse

FileOnly = 
/^(\S+)$/
FileTitle = 
/(\S+)\s+(\S.*?)$/i
TitleFile = 
/(\S.*?)\s+(\S+)$/i

Instance Method Summary collapse

Constructor Details

#initialize(tag_name, markup, tokens) ⇒ Tag

Returns a new instance of Tag.



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# File 'lib/octopress-render-code.rb', line 14

def initialize(tag_name, markup, tokens)
  @markup = markup
  super
end

Instance Method Details

#failure(message) ⇒ Object 



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# File 'lib/octopress-render-code.rb', line 79

def failure(message)
  CodeHighlighter.highlight_failed(message, "{% include_code path/to/file [title] [lang:language] [start:#] [end:#] [range:#-#] [mark:#,#-#] [linenos:false] %}", @markup, '')
end

#get_options ⇒ Object 



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# File 'lib/octopress-render-code.rb', line 48

def get_options
  # wrap with {% raw %} tags to prevent addititional processing
  defaults = { }

  clean_markup = CodeHighlighter.clean_markup(@markup).strip

  if clean_markup =~ FileOnly
    @file = get_path($1)
  elsif clean_markup =~ FileTitle
    if @file = get_path($1)
      defaults[:title] = $2
    
    # Allow for deprecated title first syntax
    #
    elsif clean_markup =~ TitleFile
      defaults[:title] = $1
      @file = get_path($2)
      if @page_path
        puts "\nRenderCode Warning:".red
        puts "  Passing title before path has been deprecated and will be removed in RenderCode 2.0".red
        puts "  Update #{@page_path} with {% render_code #{$2} #{$1} ... %}.".yellow
      end
    end
  end

  options = CodeHighlighter.parse_markup(@markup, defaults)
  options[:lang] ||= File.extname(@file).delete('.')
  options[:link_text] ||= "Raw code"
  options
end

#get_path(file) ⇒ Object 



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# File 'lib/octopress-render-code.rb', line 38

def get_path(file)
  path = File.join(@code_dir, file)

  if File.symlink?(path)
    raise "Code directory '#{@code_path}' cannot be a symlink"
  end

  path if File.exists?(path)
end

#highlight(code, options) ⇒ Object 



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# File 'lib/octopress-render-code.rb', line 84

def highlight(code, options)
  options[:aliases] = @aliases || {}
  code = CodeHighlighter.highlight(code, options)
  if @page_path
    code = "<notextile>#{code}</notextile>" if File.extname(@page_path).match(/textile/)
  end
  code
end

#render(context) ⇒ Object 



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# File 'lib/octopress-render-code.rb', line 19

def render(context)
  if page = context.environments.first['page']
    @page_path = page['path']
  end
  site = context.registers[:site]
  config_dir = (site.config['code_dir'] || 'downloads/code').sub(/^\//,'')
  @code_dir = File.join(site.source, config_dir)

  begin
    options = get_options
    code = File.open(@file).read.encode("UTF-8")
    code = CodeHighlighter.select_lines(code, options)

    highlight(code, options)
  rescue => e
    failure(e)
  end
end