php-wasm/OutputBuffer.js

Run PHP right in the browser or anywhere else JS can run

"use strict";

Object.defineProperty(exports, "__esModule", {
  value: true
});
exports.OutputBuffer = void 0;
var _Event2 = require("./_Event.js");
function _typeof(o) { "@babel/helpers - typeof"; return _typeof = "function" == typeof Symbol && "symbol" == typeof Symbol.iterator ? function (o) { return typeof o; } : function (o) { return o && "function" == typeof Symbol && o.constructor === Symbol && o !== Symbol.prototype ? "symbol" : typeof o; }, _typeof(o); }
function _classCallCheck(a, n) { if (!(a instanceof n)) throw new TypeError("Cannot call a class as a function"); }
function _defineProperties(e, r) { for (var t = 0; t < r.length; t++) { var o = r[t]; o.enumerable = o.enumerable || !1, o.configurable = !0, "value" in o && (o.writable = !0), Object.defineProperty(e, _toPropertyKey(o.key), o); } }
function _createClass(e, r, t) { return r && _defineProperties(e.prototype, r), t && _defineProperties(e, t), Object.defineProperty(e, "prototype", { writable: !1 }), e; }
function _defineProperty(e, r, t) { return (r = _toPropertyKey(r)) in e ? Object.defineProperty(e, r, { value: t, enumerable: !0, configurable: !0, writable: !0 }) : e[r] = t, e; }
function _toPropertyKey(t) { var i = _toPrimitive(t, "string"); return "symbol" == _typeof(i) ? i : i + ""; }
function _toPrimitive(t, r) { if ("object" != _typeof(t) || !t) return t; var e = t[Symbol.toPrimitive]; if (void 0 !== e) { var i = e.call(t, r || "default"); if ("object" != _typeof(i)) return i; throw new TypeError("@@toPrimitive must return a primitive value."); } return ("string" === r ? String : Number)(t); }
/**
 * Buffers output bytes until they should be emitted as an event.
 */
var OutputBuffer = exports.OutputBuffer = /*#__PURE__*/function () {
  /**
   * Creates a new output buffer for an event target.
   * @param {OutputTarget} target Event target that receives flushed events.
   * @param {string} eventType Event name to dispatch when the buffer flushes.
   * @param {number} maxLength Maximum buffered byte length before an automatic flush.
   */
  function OutputBuffer(target, eventType, maxLength) {
    _classCallCheck(this, OutputBuffer);
    /** @type {OutputTarget} */
    _defineProperty(this, "target", void 0);
    /** @type {number[]} */
    _defineProperty(this, "buffer", void 0);
    /** @type {string} */
    _defineProperty(this, "eventType", void 0);
    /** @type {number} */
    _defineProperty(this, "maxLength", void 0);
    /** @type {TextDecoder} */
    _defineProperty(this, "decoder", void 0);
    Object.defineProperty(this, 'target', {
      value: target
    });
    Object.defineProperty(this, 'buffer', {
      value: []
    });
    Object.defineProperty(this, 'eventType', {
      value: eventType
    });
    Object.defineProperty(this, 'maxLength', {
      value: maxLength
    });
    Object.defineProperty(this, 'decoder', {
      value: new TextDecoder()
    });
  }

  /**
   * Appends bytes to the internal output buffer.
   * @param {...number} items Bytes to append to the buffer.
   */
  return _createClass(OutputBuffer, [{
    key: "push",
    value: function push() {
      var _this$buffer;
      (_this$buffer = this.buffer).push.apply(_this$buffer, arguments);
      var end = this.buffer.length - 1;
      if (this.maxLength === -1 && this.buffer[end] === 10) {
        this.flush();
      }
      if (this.maxLength >= 0 && this.buffer.length >= this.maxLength) {
        this.flush();
      }
    }

    /**
     * Emits the buffered output as a single event payload.
     */
  }, {
    key: "flush",
    value: function flush() {
      if (!this.buffer.length) {
        return;
      }
      var detail = [this.decoder.decode(new Uint8Array(this.buffer))];
      var event = new _Event2._Event(this.eventType, {
        detail: detail
      });
      var target = /** @type {EventTarget & {[key: string]: PhpEventHook|undefined}} */this.target;
      var handler = target['on' + this.eventType];
      if (handler) {
        if (handler(event) === false) {
          return;
        }
      }
      if (!target.dispatchEvent(event)) {
        return;
      }
      this.buffer.splice(0);
    }
  }]);
}();