seeRead/md.rb

## md.rb
#!/usr/bin/env ruby
raise "gimme a file!" unless ARGV[0]
# This script allows for quick github-flavored-markdown previewing.
# Inspiration/code from the following
# http://grosser.it/2009/06/17/quick-markdown-preview-for-github-readme/
# https://gist.github.com/1300939
# https://github.com/alampros/Docter
# http://blog.steveklabnik.com/posts/2011-12-21-redcarpet-is-awesome
#
# You will need the following gems:
# * redcarpet
# * pygments.rb
#
# So try running:
# gem install redcarpet #may require sudo for you
# gem install pygments.rb
#
# If you are on non-Debain OS, you will need to edit the last line to use your preferred browser.
#
# For redcarpet/markdown options, see https://github.com/tanoku/redcarpet/blob/master/README.markdown
# For pygment options, see http://pygments.org/docs/
#
# Make sure to chmod +x this script.
# c.f. http://blog.steveklabnik.com/posts/2011-12-21-redcarpet-is-awesome

require 'rubygems'
require 'redcarpet'
require 'pygments.rb'

class HTMLwithPygments < Redcarpet::Render::XHTML

  def doc_header()
    '<!DOCTYPE html><html><head><style>' +  Pygments.css('.highlight',:style => 'perldoc')  + '</style></head><body>'
  end
  def doc_footer()
    '</body></html>'
  end

  def block_code(code, language)
    if language && !language.empty?
      Pygments.highlight(code, :lexer => language, :options => {:encoding => 'utf-8', :linenos=>'table'})
    else
      "<pre><code>#{code}</code></pre>"
    end
  end

  # Add html for encloding the highlighted code block
  def bc_open(opts)
    "<div class=\"highlight\"><pre>"
  end

  # Close it
  def bc_close(opts)
    "</pre></div>\n"
  end

  # for better TOC
  def header(text, header_level)
    text_slug = text.gsub(/\W/, "_").downcase
    "<h#{header_level} id='#{text_slug}'>#{text}</h#{header_level}>"
  end
end

def markdown(text)
  renderer = HTMLwithPygments.new(optionize([
    :hard_wrap
  ]))
  markdown = Redcarpet::Markdown.new(renderer, optionize([
    :strikethrough,
    :autolink,
    :fenced_code_blocks,
  ]))
  markdown.render(text)
end

def optionize(options)
  #options.each_with_object({}) { |option, memo| memo[option] = true } #1.9 ruby only
  options.inject({}) {|memo, option| memo[option] = true; memo} #http://stackoverflow.com/questions/5481009/why-is-enumerableeach-with-object-deprecated
end

File.open('/tmp/markdown.html', 'w+') {|f| f.write(markdown(ARGF.read)) }
#exec "chromium-browser /tmp/markdown.html"
exec "gnome-open /tmp/markdown.html" #gnome (ubuntu specific)
	#!/usr/bin/env ruby
	raise "gimme a file!" unless ARGV[0]
	# This script allows for quick github-flavored-markdown previewing.
	# Inspiration/code from the following
	# http://grosser.it/2009/06/17/quick-markdown-preview-for-github-readme/
	# https://gist.github.com/1300939
	# https://github.com/alampros/Docter
	# http://blog.steveklabnik.com/posts/2011-12-21-redcarpet-is-awesome
	#
	# You will need the following gems:
	# * redcarpet
	# * pygments.rb
	#
	# So try running:
	# gem install redcarpet #may require sudo for you
	# gem install pygments.rb
	#
	# If you are on non-Debain OS, you will need to edit the last line to use your preferred browser.
	#
	# For redcarpet/markdown options, see https://github.com/tanoku/redcarpet/blob/master/README.markdown
	# For pygment options, see http://pygments.org/docs/
	#
	# Make sure to chmod +x this script.
	# c.f. http://blog.steveklabnik.com/posts/2011-12-21-redcarpet-is-awesome

	require 'rubygems'
	require 'redcarpet'
	require 'pygments.rb'

	class HTMLwithPygments < Redcarpet::Render::XHTML

	def doc_header()
	'<!DOCTYPE html><html><head><style>' + Pygments.css('.highlight',:style => 'perldoc') + '</style></head><body>'
	end
	def doc_footer()
	'</body></html>'
	end

	def block_code(code, language)
	if language && !language.empty?
	Pygments.highlight(code, :lexer => language, :options => {:encoding => 'utf-8', :linenos=>'table'})
	else
	"<pre><code>#{code}</code></pre>"
	end
	end

	# Add html for encloding the highlighted code block
	def bc_open(opts)
	"<div class=\"highlight\"><pre>"
	end

	# Close it
	def bc_close(opts)
	"</pre></div>\n"
	end

	# for better TOC
	def header(text, header_level)
	text_slug = text.gsub(/\W/, "_").downcase
	"<h#{header_level} id='#{text_slug}'>#{text}</h#{header_level}>"
	end
	end

	def markdown(text)
	renderer = HTMLwithPygments.new(optionize([
	:hard_wrap
	]))
	markdown = Redcarpet::Markdown.new(renderer, optionize([
	:strikethrough,
	:autolink,
	:fenced_code_blocks,
	]))
	markdown.render(text)
	end

	def optionize(options)
	#options.each_with_object({}) { \|option, memo\| memo[option] = true } #1.9 ruby only
	options.inject({}) {\|memo, option\| memo[option] = true; memo} #http://stackoverflow.com/questions/5481009/why-is-enumerableeach-with-object-deprecated
	end

	File.open('/tmp/markdown.html', 'w+') {\|f\| f.write(markdown(ARGF.read)) }
	#exec "chromium-browser /tmp/markdown.html"
	exec "gnome-open /tmp/markdown.html" #gnome (ubuntu specific)