var Filter, STYLES, defaults, entities, extend, toHexString, _i, _results,
  __slice = [].slice;

STYLES = {
  'ef0': 'color:#000',
  'ef1': 'color:#A00',
  'ef2': 'color:#0A0',
  'ef3': 'color:#A50',
  'ef4': 'color:#00A',
  'ef5': 'color:#A0A',
  'ef6': 'color:#0AA',
  'ef7': 'color:#AAA',
  'ef8': 'color:#555',
  'ef9': 'color:#F55',
  'ef10': 'color:#5F5',
  'ef11': 'color:#FF5',
  'ef12': 'color:#55F',
  'ef13': 'color:#F5F',
  'ef14': 'color:#5FF',
  'ef15': 'color:#FFF',
  'eb0': 'background-color:#000',
  'eb1': 'background-color:#A00',
  'eb2': 'background-color:#0A0',
  'eb3': 'background-color:#A50',
  'eb4': 'background-color:#00A',
  'eb5': 'background-color:#A0A',
  'eb6': 'background-color:#0AA',
  'eb7': 'background-color:#AAA',
  'eb8': 'background-color:#555',
  'eb9': 'background-color:#F55',
  'eb10': 'background-color:#5F5',
  'eb11': 'background-color:#FF5',
  'eb12': 'background-color:#55F',
  'eb13': 'background-color:#F5F',
  'eb14': 'background-color:#5FF',
  'eb15': 'background-color:#FFF'
};

toHexString = function(num) {
  num = num.toString(16);
  while (num.length < 2) {
    num = "0" + num;
  }
  return num;
};

[0, 1, 2, 3, 4, 5].forEach(function(red) {
  return [0, 1, 2, 3, 4, 5].forEach(function(green) {
    return [0, 1, 2, 3, 4, 5].forEach(function(blue) {
      var b, c, g, n, r, rgb;
      c = 16 + (red * 36) + (green * 6) + blue;
      r = red > 0 ? red * 40 + 55 : 0;
      g = green > 0 ? green * 40 + 55 : 0;
      b = blue > 0 ? blue * 40 + 55 : 0;
      rgb = ((function() {
        var _i, _len, _ref, _results;
        _ref = [r, g, b];
        _results = [];
        for (_i = 0, _len = _ref.length; _i < _len; _i++) {
          n = _ref[_i];
          _results.push(toHexString(n));
        }
        return _results;
      })()).join('');
      STYLES["ef" + c] = "color:#" + rgb;
      return STYLES["eb" + c] = "background-color:#" + rgb;
    });
  });
});

(function() {
  _results = [];
  for (_i = 0; _i <= 23; _i++){ _results.push(_i); }
  return _results;
}).apply(this).forEach(function(gray) {
  var c, l;
  c = gray + 232;
  l = toHexString(gray * 10 + 8);
  STYLES["ef" + c] = "color:#" + l + l + l;
  return STYLES["eb" + c] = "background-color:#" + l + l + l;
});

extend = function() {
  var dest, k, obj, objs, v, _j, _len;
  dest = arguments[0], objs = 2 <= arguments.length ? __slice.call(arguments, 1) : [];
  for (_j = 0, _len = objs.length; _j < _len; _j++) {
    obj = objs[_j];
    for (k in obj) {
      v = obj[k];
      dest[k] = v;
    }
  }
  return dest;
};

defaults = {
  fg: '#FFF',
  bg: '#000',
  newline: false,
  escapeXML: false,
  stream: false
};

Filter = (function() {
  function Filter(options) {
    if (options == null) {
      options = {};
    }
    this.opts = extend({}, defaults, options);
    this.input = [];
    this.stack = [];
    this.stickyStack = [];
  }

  Filter.prototype.toHtml = function(input) {
    var buf;
    this.input = typeof input === 'string' ? [input] : input;
    buf = [];
    this.stickyStack.forEach((function(_this) {
      return function(element) {
        return _this.generateOutput(element.token, element.data, function(chunk) {
          return buf.push(chunk);
        });
      };
    })(this));
    this.forEach(function(chunk) {
      return buf.push(chunk);
    });
    this.input = [];
    return buf.join('');
  };

  Filter.prototype.forEach = function(callback) {
    var buf;
    buf = '';
    this.input.forEach((function(_this) {
      return function(chunk) {
        buf += chunk;
        return _this.tokenize(buf, function(token, data) {
          _this.generateOutput(token, data, callback);
          if (_this.opts.stream) {
            return _this.updateStickyStack(token, data);
          }
        });
      };
    })(this));
    if (this.stack.length) {
      return callback(this.resetStyles());
    }
  };

  Filter.prototype.generateOutput = function(token, data, callback) {
    switch (token) {
      case 'text':
        return callback(this.pushText(data));
      case 'display':
        return this.handleDisplay(data, callback);
      case 'xterm256':
        return callback(this.pushStyle("ef" + data));
    }
  };

  Filter.prototype.updateStickyStack = function(token, data) {
    var notCategory;
    notCategory = function(category) {
      return function(e) {
        return (category === null || e.category !== category) && category !== 'all';
      };
    };
    if (token !== 'text') {
      this.stickyStack = this.stickyStack.filter(notCategory(this.categoryForCode(data)));
      return this.stickyStack.push({
        token: token,
        data: data,
        category: this.categoryForCode(data)
      });
    }
  };

  Filter.prototype.handleDisplay = function(code, callback) {
    code = parseInt(code, 10);
    if (code === -1) {
      callback('<br/>');
    }
    if (code === 0) {
      if (this.stack.length) {
        callback(this.resetStyles());
      }
    }
    if (code === 1) {
      callback(this.pushTag('b'));
    }
    if (code === 2) {

    }
    if ((2 < code && code < 5)) {
      callback(this.pushTag('u'));
    }
    if ((4 < code && code < 7)) {
      callback(this.pushTag('blink'));
    }
    if (code === 7) {

    }
    if (code === 8) {
      callback(this.pushStyle('display:none'));
    }
    if (code === 9) {
      callback(this.pushTag('strike'));
    }
    if (code === 24) {
      callback(this.closeTag('u'));
    }
    if ((29 < code && code < 38)) {
      callback(this.pushStyle("ef" + (code - 30)));
    }
    if (code === 39) {
      callback(this.pushStyle("color:" + this.opts.fg));
    }
    if ((39 < code && code < 48)) {
      callback(this.pushStyle("eb" + (code - 40)));
    }
    if (code === 49) {
      callback(this.pushStyle("background-color:" + this.opts.bg));
    }
    if ((89 < code && code < 98)) {
      callback(this.pushStyle("ef" + (8 + (code - 90))));
    }
    if ((99 < code && code < 108)) {
      return callback(this.pushStyle("eb" + (8 + (code - 100))));
    }
  };

  Filter.prototype.categoryForCode = function(code) {
    code = parseInt(code, 10);
    if (code === 0) {
      return 'all';
    } else if (code === 1) {
      return 'bold';
    } else if ((2 < code && code < 5)) {
      return 'underline';
    } else if ((4 < code && code < 7)) {
      return 'blink';
    } else if (code === 8) {
      return 'hide';
    } else if (code === 9) {
      return 'strike';
    } else if ((29 < code && code < 38) || code === 39 || (89 < code && code < 98)) {
      return 'foreground-color';
    } else if ((39 < code && code < 48) || code === 49 || (99 < code && code < 108)) {
      return 'background-color';
    } else {
      return null;
    }
  };

  Filter.prototype.pushTag = function(tag, style) {
    if (style == null) {
      style = '';
    }
    if (style.length && style.indexOf(':') === -1) {
      style = STYLES[style];
    }
    this.stack.push(tag);
    return ["<" + tag, (style ? " style=\"" + style + "\"" : void 0), ">"].join('');
  };

  Filter.prototype.pushText = function(text) {
    if (this.opts.escapeXML) {
      return entities.encodeXML(text);
    } else {
      return text;
    }
  };

  Filter.prototype.pushStyle = function(style) {
    return this.pushTag("span", style);
  };

  Filter.prototype.closeTag = function(style) {
    var last;
    if (this.stack.slice(-1)[0] === style) {
      last = this.stack.pop();
    }
    if (last != null) {
      return "</" + style + ">";
    }
  };

  Filter.prototype.resetStyles = function() {
    var stack, _ref;
    _ref = [this.stack, []], stack = _ref[0], this.stack = _ref[1];
    return stack.reverse().map(function(tag) {
      return "</" + tag + ">";
    }).join('');
  };

  Filter.prototype.tokenize = function(text, callback) {
    var ansiHandler, ansiMatch, ansiMess, handler, i, length, newline, process, realText, remove, removeXterm256, tokens, _j, _len, _results1;
    ansiMatch = false;
    ansiHandler = 3;
    remove = function(m) {
      return '';
    };
    removeXterm256 = function(m, g1) {
      callback('xterm256', g1);
      return '';
    };
    newline = (function(_this) {
      return function(m) {
        if (_this.opts.newline) {
          callback('display', -1);
        } else {
          callback('text', m);
        }
        return '';
      };
    })(this);
    ansiMess = function(m, g1) {
      var code, _j, _len;
      ansiMatch = true;
      if (g1.trim().length === 0) {
        g1 = '0';
      }
      g1 = g1.trimRight(';').split(';');
      for (_j = 0, _len = g1.length; _j < _len; _j++) {
        code = g1[_j];
        callback('display', code);
      }
      return '';
    };
    realText = function(m) {
      callback('text', m);
      return '';
    };
    tokens = [
      {
        pattern: /^\x08+/,
        sub: remove
      }, {
        pattern: /^\x1b\[[012]?K/,
        sub: remove
      }, {
        pattern: /^\x1b\[38;5;(\d+)m/,
        sub: removeXterm256
      }, {
        pattern: /^\n+/,
        sub: newline
      }, {
        pattern: /^\x1b\[((?:\d{1,3};?)+|)m/,
        sub: ansiMess
      }, {
        pattern: /^\x1b\[?[\d;]{0,3}/,
        sub: remove
      }, {
        pattern: /^([^\x1b\x08\n]+)/,
        sub: realText
      }
    ];
    process = function(handler, i) {
      var matches;
      if (i > ansiHandler && ansiMatch) {
        return;
      } else {
        ansiMatch = false;
      }
      matches = text.match(handler.pattern);
      text = text.replace(handler.pattern, handler.sub);
      if (matches == null) {

      }
    };
    _results1 = [];
    while ((length = text.length) > 0) {
      for (i = _j = 0, _len = tokens.length; _j < _len; i = ++_j) {
        handler = tokens[i];
        process(handler, i);
      }
      if (text.length === length) {
        break;
      } else {
        _results1.push(void 0);
      }
    }
    return _results1;
  };

  return Filter;

})();