stevengharms

[code lang="ruby"]
#!/usr/bin/env ruby 

module MacronConversions
  LATEX_TO_MACRONS_CHARACTERS = {
    "\\={a}"   => "?",
    "\\={e}"   => "?",
    "\\={\\i}" => "?",
    "\\={o}"   => "?",
    "\\={u}"   => "?",
    "\\={A}"   => "?",
    "\\={E}"   => "?",
    "\\={\\I}" => "?",
    "\\={O}"   => "?",
    "\\={U}"   => "?",
  }
  
  LATEX_TO_UTF8 ={
    "\\={a}"   => "\\xc4\\x81",
    "\\={e}"   => "\\xc4\\x93",
    "\\={\\i}" => "\\xc4\\xab",
    "\\={o}"   => "\\xc5\\x8d",
    "\\={u}"   => "\\xc5\\xab",
    "\\={A}"   => "\\xc4\\x80",
    "\\={E}"   => "\\xc4\\x92",
    "\\={\\I}" => "\\xc4\\xaa",
    "\\={O}"   => "\\xc5\\x8c",
    "\\={U}"   => "\\xc5\\xaa",
  }
  
  LATEX_TO_HTML_ENTITIES = {
    "\\={a}"   => "ā",
    "\\={e}"   => "ē",
    "\\={\\i}" => "ī",
    "\\={o}"   => "ō",
    "\\={u}"   => "ū",
    "\\={A}"   => "Ā",
    "\\={E}"   => "Ē",
    "\\={\\I}" => "Ī",
    "\\={O}"   => "Ō",
    "\\={U}"   => "Ū",
  }

  class Converter < Object
    def initialize(*ray)
      @target = ray[0].nil? ? 'html' : ray[0]
      @index=Array.new
    end
    
    def processString(s)      
      firstSlash = s =~ /(\\=.*?\})/
      return "" if $1.nil?
      
      testChar = $1
       
      if firstSlash == 0
        return processChar(testChar) +
         processString(s[firstSlash+testChar.length..s.length])
      end
      
      return s[0..firstSlash-1] + processChar(testChar) +
       processString(s[firstSlash+testChar.length..s.length])
    end
    
    def processChar(c)
      if @target == 'utf8'
        return LATEX_TO_UTF8[c]
      end
      if @target == 'html'
        return LATEX_TO_HTML_ENTITIES[c]
      end
      if @target == "mc"
        return LATEX_TO_MACRONS_CHARACTERS[c]
      end
    end
  end
end

unless STDIN.tty?
  content=STDIN.read
else
  content=ARGV[0]
end

# You can change this value to 'mc', '', or 'utf8'.  Empty, it means 'html'

puts MacronConversions::Converter.new('html').processString(content)

[/code]