// CodeMirror, copyright © by Marijn Haverbeke and others // Distributed under an MIT license: codemirror.net/LICENSE

/*

DTD mode
Ported to CodeMirror by Peter Kroon <plakroon@gmail.com>
Report bugs/issues here: https://github.com/codemirror/CodeMirror/issues
GitHub: @peterkroon

*/

(function(mod) {

if (typeof exports == "object" && typeof module == "object") // CommonJS
  mod(require("../../lib/codemirror"));
else if (typeof define == "function" && define.amd) // AMD
  define(["../../lib/codemirror"], mod);
else // Plain browser env
  mod(CodeMirror);

})(function(CodeMirror) { “use strict”;

CodeMirror.defineMode(“dtd”, function(config) {

var indentUnit = config.indentUnit, type;
function ret(style, tp) {type = tp; return style;}

function tokenBase(stream, state) {
  var ch = stream.next();

  if (ch == "<" && stream.eat("!") ) {
    if (stream.eatWhile(/[\-]/)) {
      state.tokenize = tokenSGMLComment;
      return tokenSGMLComment(stream, state);
    } else if (stream.eatWhile(/[\w]/)) return ret("keyword", "doindent");
  } else if (ch == "<" && stream.eat("?")) { //xml declaration
    state.tokenize = inBlock("meta", "?>");
    return ret("meta", ch);
  } else if (ch == "#" && stream.eatWhile(/[\w]/)) return ret("atom", "tag");
  else if (ch == "|") return ret("keyword", "seperator");
  else if (ch.match(/[\(\)\[\]\-\.,\+\?>]/)) return ret(null, ch);//if(ch === ">") return ret(null, "endtag"); else
  else if (ch.match(/[\[\]]/)) return ret("rule", ch);
  else if (ch == "\"" || ch == "'") {
    state.tokenize = tokenString(ch);
    return state.tokenize(stream, state);
  } else if (stream.eatWhile(/[a-zA-Z\?\+\d]/)) {
    var sc = stream.current();
    if( sc.substr(sc.length-1,sc.length).match(/\?|\+/) !== null )stream.backUp(1);
    return ret("tag", "tag");
  } else if (ch == "%" || ch == "*" ) return ret("number", "number");
  else {
    stream.eatWhile(/[\w\\\-_%.{,]/);
    return ret(null, null);
  }
}

function tokenSGMLComment(stream, state) {
  var dashes = 0, ch;
  while ((ch = stream.next()) != null) {
    if (dashes >= 2 && ch == ">") {
      state.tokenize = tokenBase;
      break;
    }
    dashes = (ch == "-") ? dashes + 1 : 0;
  }
  return ret("comment", "comment");
}

function tokenString(quote) {
  return function(stream, state) {
    var escaped = false, ch;
    while ((ch = stream.next()) != null) {
      if (ch == quote && !escaped) {
        state.tokenize = tokenBase;
        break;
      }
      escaped = !escaped && ch == "\\";
    }
    return ret("string", "tag");
  };
}

function inBlock(style, terminator) {
  return function(stream, state) {
    while (!stream.eol()) {
      if (stream.match(terminator)) {
        state.tokenize = tokenBase;
        break;
      }
      stream.next();
    }
    return style;
  };
}

return {
  startState: function(base) {
    return {tokenize: tokenBase,
            baseIndent: base || 0,
            stack: []};
  },

  token: function(stream, state) {
    if (stream.eatSpace()) return null;
    var style = state.tokenize(stream, state);

    var context = state.stack[state.stack.length-1];
    if (stream.current() == "[" || type === "doindent" || type == "[") state.stack.push("rule");
    else if (type === "endtag") state.stack[state.stack.length-1] = "endtag";
    else if (stream.current() == "]" || type == "]" || (type == ">" && context == "rule")) state.stack.pop();
    else if (type == "[") state.stack.push("[");
    return style;
  },

  indent: function(state, textAfter) {
    var n = state.stack.length;

    if( textAfter.match(/\]\s+|\]/) )n=n-1;
    else if(textAfter.substr(textAfter.length-1, textAfter.length) === ">"){
      if(textAfter.substr(0,1) === "<")n;
      else if( type == "doindent" && textAfter.length > 1 )n;
      else if( type == "doindent")n--;
      else if( type == ">" && textAfter.length > 1)n;
      else if( type == "tag" && textAfter !== ">")n;
      else if( type == "tag" && state.stack[state.stack.length-1] == "rule")n--;
      else if( type == "tag")n++;
      else if( textAfter === ">" && state.stack[state.stack.length-1] == "rule" && type === ">")n--;
      else if( textAfter === ">" && state.stack[state.stack.length-1] == "rule")n;
      else if( textAfter.substr(0,1) !== "<" && textAfter.substr(0,1) === ">" )n=n-1;
      else if( textAfter === ">")n;
      else n=n-1;
      //over rule them all
      if(type == null || type == "]")n--;
    }

    return state.baseIndent + n * indentUnit;
  },

  electricChars: "]>"
};

});

CodeMirror.defineMIME(“application/xml-dtd”, “dtd”);

});