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

(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('shell', function() {

var words = {};
function define(style, string) {
  var split = string.split(' ');
  for(var i = 0; i < split.length; i++) {
    words[split[i]] = style;
  }
};

// Atoms
define('atom', 'true false');

// Keywords
define('keyword', 'if then do else elif while until for in esac fi fin ' +
  'fil done exit set unset export function');

// Commands
define('builtin', 'ab awk bash beep cat cc cd chown chmod chroot clear cp ' +
  'curl cut diff echo find gawk gcc get git grep hg kill killall ln ls make ' +
  'mkdir openssl mv nc node npm ping ps restart rm rmdir sed service sh ' +
  'shopt shred source sort sleep ssh start stop su sudo svn tee telnet top ' +
  'touch vi vim wall wc wget who write yes zsh');

function tokenBase(stream, state) {
  if (stream.eatSpace()) return null;

  var sol = stream.sol();
  var ch = stream.next();

  if (ch === '\\') {
    stream.next();
    return null;
  }
  if (ch === '\'' || ch === '"' || ch === '`') {
    state.tokens.unshift(tokenString(ch, ch === "`" ? "quote" : "string"));
    return tokenize(stream, state);
  }
  if (ch === '#') {
    if (sol && stream.eat('!')) {
      stream.skipToEnd();
      return 'meta'; // 'comment'?
    }
    stream.skipToEnd();
    return 'comment';
  }
  if (ch === '$') {
    state.tokens.unshift(tokenDollar);
    return tokenize(stream, state);
  }
  if (ch === '+' || ch === '=') {
    return 'operator';
  }
  if (ch === '-') {
    stream.eat('-');
    stream.eatWhile(/\w/);
    return 'attribute';
  }
  if (/\d/.test(ch)) {
    stream.eatWhile(/\d/);
    if(stream.eol() || !/\w/.test(stream.peek())) {
      return 'number';
    }
  }
  stream.eatWhile(/[\w-]/);
  var cur = stream.current();
  if (stream.peek() === '=' && /\w+/.test(cur)) return 'def';
  return words.hasOwnProperty(cur) ? words[cur] : null;
}

function tokenString(quote, style) {
  var close = quote == "(" ? ")" : quote == "{" ? "}" : quote
  return function(stream, state) {
    var next, end = false, escaped = false;
    while ((next = stream.next()) != null) {
      if (next === close && !escaped) {
        end = true;
        break;
      }
      if (next === '$' && !escaped && quote !== "'") {
        escaped = true;
        stream.backUp(1);
        state.tokens.unshift(tokenDollar);
        break;
      }
      if (!escaped && next === quote && quote !== close) {
        state.tokens.unshift(tokenString(quote, style))
        return tokenize(stream, state)
      }
      escaped = !escaped && next === '\\';
    }
    if (end) state.tokens.shift();
    return style;
  };
};

var tokenDollar = function(stream, state) {
  if (state.tokens.length > 1) stream.eat('$');
  var ch = stream.next()
  if (/['"({]/.test(ch)) {
    state.tokens[0] = tokenString(ch, ch == "(" ? "quote" : ch == "{" ? "def" : "string");
    return tokenize(stream, state);
  }
  if (!/\d/.test(ch)) stream.eatWhile(/\w/);
  state.tokens.shift();
  return 'def';
};

function tokenize(stream, state) {
  return (state.tokens[0] || tokenBase) (stream, state);
};

return {
  startState: function() {return {tokens:[]};},
  token: function(stream, state) {
    return tokenize(stream, state);
  },
  closeBrackets: "()[]{}''\"\"``",
  lineComment: '#',
  fold: "brace"
};

});

CodeMirror.defineMIME('text/x-sh', 'shell'); // Apache uses a slightly different Media Type for Shell scripts // svn.apache.org/repos/asf/httpd/httpd/trunk/docs/conf/mime.types CodeMirror.defineMIME('application/x-sh', 'shell');

});