Nanoc code highlighting experiment

hilite_bug.rb

# run via: ruby [-Ilib] hilite_bug.rb
#          ruby [-Ilib] hilite_bug.rb > nanoc_hl.html 2> nokogiri_out.txt

begin
  require 'nanoc'
  require 'nanoc/filters'
  require 'nanoc/helpers'
  include Nanoc::Helpers::HTMLEscape
rescue LoadError
  require 'nanoc3'
  require 'nanoc3/filters'
  require 'nanoc3/helpers'
  include Nanoc3::Helpers::HTMLEscape
end

require 'nokogiri'
require 'redcarpet'

STDERR.puts "Nanoc v#{Nanoc3::VERSION}"
STDERR.puts "Nokogiri v#{Nokogiri::VERSION}"
STDERR.puts "Redcarpet v#{Redcarpet::VERSION}"

raw = DATA.read

# emulate `filter :erubis`
if Nanoc3::VERSION < '3.3.0'
  klass = Nanoc3::Filters::ERB
else
  klass = Nanoc3::Filters::Erubis
end
erb = klass.new.run(raw)

STDERR.puts "\n=== #{klass.to_s.split(':')[-1]} filtered content ===\n\n"
STDERR.puts erb


# emulate `filter :redcarpet`
content = Nanoc3::Filters::Redcarpet.new.run(erb)


# emulate `filter :colorize_syntax, :coderay => { :line_numbers => :table }`
cs = Nanoc3::Filters::ColorizeSyntax.new
filtered = cs.run(content,
                  :syntax => :html,
                  :coderay => { :line_numbers => :table })


# what's the post-Redcarpet, post-coderay content look like?
puts filtered


# what's Nokogiri's HTML and XML post-RDiscount fragments look like?
STDERR.puts "\n\n=== Nokogiri::HTML.fragment(content) ===\n\n"
STDERR.puts Nokogiri::HTML.fragment(content).to_html

STDERR.puts "\n\n=== Nokogiri::XML.fragment(content) ===\n\n"
STDERR.puts Nokogiri::XML.fragment(content).to_html


__END__
My markdown paragraph describing the following syntax highlighted code

<pre><code class="language-c">
<% h do %>
/* build with:
 *
 *      cl /W2 /Oy- /Zi slowhello.c user32.lib
 *          -or-
 *      [AQtime] gcc -O2 -gstabs+ -o slowhello.exe slowhello.c -luser32
 *      [verysleepy] gcc -O2 -fno-omit-frame-pointer -g3 -o slowhello.exe slowhello.c -luser32 
 */
#include <sys/stat.h>
#include <windows.h>

#define STAT_COUNT  50000

void
rb_mongo_stat(const char *filename)
{
    int i;
    struct stat buf;

    for (i = 0; i < STAT_COUNT; i++) {
        stat(filename, &buf);
    }
}

void
hello(void)
{
    rb_mongo_stat("slowhello.exe");

    MessageBox(NULL, "Hi Speedy G!", "Pokey", MB_SETFOREGROUND);
}

int
main(int argc, char *argv[])
{
    hello();

    return 0;
}
<% end %>
</code></pre>