(function() {
  var Command, IsInstalledCommand, Parser, Protocol,
    __hasProp = {}.hasOwnProperty,
    __extends = function(child, parent) { for (var key in parent) { if (__hasProp.call(parent, key)) child[key] = parent[key]; } function ctor() { this.constructor = child; } ctor.prototype = parent.prototype; child.prototype = new ctor(); child.__super__ = parent.prototype; return child; };

  Command = require('../../command');

  Protocol = require('../../protocol');

  Parser = require('../../parser');

  IsInstalledCommand = (function(_super) {
    __extends(IsInstalledCommand, _super);

    function IsInstalledCommand() {
      return IsInstalledCommand.__super__.constructor.apply(this, arguments);
    }

    IsInstalledCommand.prototype.execute = function(pkg) {
      this._send("shell:pm path " + pkg + " 2>/dev/null");
      return this.parser.readAscii(4).then((function(_this) {
        return function(reply) {
          switch (reply) {
            case Protocol.OKAY:
              return _this.parser.readAscii(8).then(function(reply) {
                switch (reply) {
                  case 'package:':
                    return true;
                  default:
                    return _this.parser.unexpected(reply, "'package:'");
                }
              })["catch"](Parser.PrematureEOFError, function(err) {
                return false;
              });
            case Protocol.FAIL:
              return _this.parser.readError();
            default:
              return _this.parser.unexpected(reply, 'OKAY or FAIL');
          }
        };
      })(this));
    };

    return IsInstalledCommand;

  })(Command);

  module.exports = IsInstalledCommand;

}).call(this);