#!/usr/bin/ruby

def contents_index(fname = $0, caption=nil)
  document, index, onoff = '', '', false
  begin
    File.open(fname){|f| document = f.readlines}
    document.each do |line|
      onoff = true if line.chomp=='=begin'
      onoff = false if line.chomp=='=end'
      term = %r{^===([^=]*)}.match(line.chomp).to_a[1]
      index += "  * ((<#{term}>))\n" if term and (term.length > 0) and onoff
    end # document.each do |line| 

    res  = "* #{caption}\n" if caption
    res += index
    return res
  rescue # File.open(fname)
    $stderr.print "File not found: #{$_}\n"
  end # File.open(fname)
end # def contrnts_index(fname = $0)

def rubyruby(rb, rt, *rp)
  case rp.size
    when 0
      rp = ['(', ')']
    when 1
      rp[1] = rp[0]
  end # case rp.size

  ruby = ''
  ruby+= "((:<ruby>:))"
  ruby+=   "((:<rb>:))#{rb}((:</rb>:))"
  ruby+=   "((:<rp>#{rp[0]}</rp>"
  ruby+=     "<rt>#{rt}</rt>"
  ruby+=   "<rp>#{rp[1]}</rp>:))"
  ruby+= "((:</ruby>:))"

  return ruby
end # def rubyruby(rb, rt, *rp) 

def color(color, string)
  ret = ''
  ret+= '((:<span style="color:' + color + '">:))' 
  ret+= string
  ret+= '((:</span>:))'

  return ret
end # def color(color, string)