toc generation snippets

Generate a TOC for a textile file

Tagged ruby, redcloth, textile, toc generation  Languages ruby

Takes a textile document as input (reads from a file) and generates a TOC (Table Of Contents) for it. The resulting output is a complete HTML document with the TOC and your document integrated. Requires Redcloth. Usage:

ruby ./textile_to_html_with_toc.rb my_textile_document.tex > my_textile_document.html

NOTE: Does not work with direct copy & paste because of a problem of correctly displaying the escaping quotes of the here document.

#!/usr/bin/env ruby
# author: marko dot haapala at aktagon dot com
# idea taken from here: http://blade.nagaokaut.ac.jp/cgi-bin/scat.rb/ruby/ruby-talk/134005
require "rubygems"
require "redcloth"

def generate_toc (file_name, headreg)
    document = IO.read(file_name)
    toc = "" 
    document.gsub(headreg) do |match|
        number = $1
        name = $2
        header = name.gsub(/\s/,"+")
        toc << '#' * number.to_i + ' "' + name + '":#' + header + "\n"
    end
    RedCloth.new(toc).to_html
end

def manipulate_body(file_name, headreg)
    document = IO.read(file_name)
    document.gsub!(headreg) do |match|
        number = $1
        name = $2
        header = name.gsub(/\s/,"+")
        "\nh" + number + '. <a name="' + header + '">' + name + '</a>'
    end
    RedCloth.new(document).to_html
end

if ARGV[0] == nil 
    puts "Oh no! You didn't give me a filename :(" 
    exit 1
end

file_name = ARGV[0]
headreg = /^\s*h([1-6])\.\s+(.*)/
toc = generate_toc(file_name, headreg)
body = manipulate_body(file_name, headreg)
template = <<-'EOF'
<!DOCTYPE html PUBLIC \"-//W3C//DTD XHTML 1.0 Strict//EN\" \"http://www.w3.org/TR/xhtml1/DTD/xhtml1-strict.dtd\">
<html xml:lang=\"en\" lang=\"en\" xmlns=\"http://www.w3.org/1999/xhtml\">
    <head>
        <title>#{file_name}</title>
        <META HTTP-EQUIV=\"Content-Type\" CONTENT=\"text/html; charset=ISO-8859-1\">
        <link rel=stylesheet href=\"style.css\" type=\"text/css\">
    </head>
    <body>
        #{toc}
        #{body}
    </body>
</html>
EOF
puts eval("\"" + template + "\"")
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