Minimal Syntax Highlighter

gistfile1.coffee

new class Highlighter
  entities: (s) ->
    s.replace(/&/g, '&amp;').replace(/</g, '&lt;').replace(/>/g, '&gt;').replace(/"/g, '&quot;')
  highlight: (code,lang) ->
    map = code
    tokens = {}
    uid = 0
    for a in lang
      code.replace a.regexp, (str) -> 
        map = map.replace str, "§"+uid
        match = str
        tokens["§"+uid] = 
          class: a.class
          match: match
        uid++
        ""
    m = @entities(map).split("\n")
    map = (m.map (line) -> "<div>"+line+"</div>").join("\n")
    map.replace /§\d+/g, (str) ->
      item = tokens[str]
      "<span class='sh #{item.class}'>"+@entities(item.match)+"</span>"