Redmine

    Redmine::SyntaxHighlighting.colorize_file(name, content)

<p><label><%= l(:label_syntax_highlighter) %></label>

<%= select_tag 'settings[syntax_highlighter]', options_for_select( (Redmine::SyntaxHighlighting.available_highlighters.collect{|h| [h, h]}), Setting.syntax_highlighter) %></p>

<%= render :partial => 'common/file', :locals => {:content => @content, :filename => @attachment.disk_filename} %>

<table class="filecontent">

<tr><th class="line-num" id="L<%= line_num %>"><a href="#L<%= line_num %>"><%= line_num %></a></th><td class="line-code"><%= line %></td></tr>

syntax_highlighter:

  default: 'DefaultCodeRay'

  label_syntax_highlighter: Syntax highlighter

  label_syntax_highlighter: Colorateur syntaxique

                content = Redmine::SyntaxHighlighting.colorize($2, $1)

# Redmine - project management software

# Copyright (C) 2006-2008  Jean-Philippe Lang

#

# This program is free software; you can redistribute it and/or

# modify it under the terms of the GNU General Public License

# as published by the Free Software Foundation; either version 2

# of the License, or (at your option) any later version.

# 

# This program is distributed in the hope that it will be useful,

# but WITHOUT ANY WARRANTY; without even the implied warranty of

# MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the

# GNU General Public License for more details.

# 

# You should have received a copy of the GNU General Public License

# along with this program; if not, write to the Free Software

# Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston, MA  02110-1301, USA.

module Redmine

  module SyntaxHighlighting

    class << self

      # get highlighter class object

      def highlighter

        const_get(Setting.syntax_highlighter)

      end

      # get all available highlighters

      def available_highlighters

        constants.sort - ["SyntaxAssets"]

      end

      # used in the wiki to colorize text

      def colorize(text, format="")

        raise "#{highlighter} should implement 'colorize' method !" unless highlighter.respond_to?(:colorize)

        highlighter.colorize(text, format)

      end

      # used in attachments/repository to colorize files

      def colorize_file(filename, content)

        raise "#{highlighter} should implement 'colorize_file' method !" unless highlighter.respond_to?(:colorize_file)

        highlighter.colorize_file(filename, content)

      end

    end

    #hook to add chosen highlighter specific js and css tags in layout header

    class SyntaxAssets < Redmine::Hook::ViewListener

      def view_layouts_base_html_head(context)

        res = []

        h = Redmine::SyntaxHighlighting.highlighter

        # specific stylesheets ; just define a "stylesheets" method returning an array

        h.stylesheets.each do |args|

          res << stylesheet_link_tag(*args)

        end if h.respond_to?(:stylesheets)

        # specific javascripts ; just define a "javascripts" method returning an array

        h.javascripts.each do |args|

          res << javascript_include_tag(*args)

        end if h.respond_to?(:javascripts)

        res.join

      end

    end

    Redmine::Hook.add_listener(SyntaxAssets)

    #default highlighter

    module DefaultCodeRay

      require 'coderay'

      require 'coderay/helpers/file_type'

      class << self

        def colorize(text, format)

          "<code class=\"#{format} CodeRay\">" + 

            CodeRay.scan(text, format.downcase).html(:escape => false, :line_numbers => :inline)

        end

        def colorize_file(filename, content)

          type = CodeRay::FileType[filename]

          result = type ? CodeRay.scan(content, type).html : ERB::Util.h(content)

          # to keep old behaviour (<pre> tags were in common/_file.rhtml template, disturbing eventual other highlighter)

          result.split(/\n/).map{|l| "<pre>#{l}</pre>"}.join("\n")

        end

      end

    end

  end

end

require 'redmine/syntax_highlighting'

    margin: 0px;