lib/akkordarbeit/html_formatter.rb

   1 # vim: fileencoding=UTF-8 ft=ruby syn=ruby ts=2 sw=2 ai eol et si
   2
   3 # Copyright (c) 2009 Jörg W Mittag <mailto:JoergWMittag+Akkordarbeit@GoogleMail.Com>
   4 # This code is licensed under the terms of the MIT License (see LICENSE.rdoc)
   5
   6 libdir = File.expand_path(File.dirname __FILE__).gsub(/(.*lib).*?/, '\1')
   7 $LOAD_PATH.unshift libdir unless $LOAD_PATH.include? libdir
   8
   9 module Akkordarbeit
  10   class HtmlFormatter
  11     def format(parsetree)
  12       output =  <<-'HERE'
  13 <!DOCTYPE html>
  14 <html xmlns='http://www.w3.org/1999/xhtml' xml:lang='en' lang='en'>
  15         <head>
  16                 <meta http-equiv='Content-type'     content='text/html; charset=UTF-8' />
  17                 <title>Song-Sheet</title>
  18                 <meta http-equiv='content-language' content='en' />
  19                 <style>
  20                         p {
  21                                 line-height: 300%;
  22                                 max-width: 30em;
  23                         }
  24                         .chord {
  25                                 position: relative;
  26                         }
  27                         .chord span {
  28                                 position: absolute;
  29                                 bottom: 40%;
  30                                 font-size: 66%;
  31                                 font-weight: bold;
  32                         }
  33                         .chord .brackets {
  34                                 display: none;
  35                         }
  36                 </style>
  37         </head>
  38         <body>
  39                 <header>
  40                         <h1>Song-Sheet</h1>
  41                 </header>
  42                 <section>
  43       HERE
  44       parsetree.each do |section|
  45         output << "\t"*3 << "<p>\n"
  46         section.each do |line|
  47           output << "\t"*4
  48           last_chord = nil
  49           line.each do |token|
  50             regex = /(?:\[(.*?)\])/
  51             if regex.match(token)
  52               last_chord = $1
  53             else
  54               unless last_chord
  55                 output << token
  56               else
  57                 token = '&nbsp;' if token =~ /^\s$/
  58                 output << "<span class='chord'><span><span class='brackets'>[</span>#{last_chord}<span class='brackets'>]</span></span>#{token}</span>"
  59                 last_chord = nil
  60               end
  61             end
  62           end
  63           output << "<br />\n"
  64         end
  65         output << "\t"*3 << "</p>\n"
  66       end
  67       return output << <<-'HERE'
  68                 </section>
  69         </body>
  70 </html>
  71     HERE
  72     end
  73   end
  74 end