extract-base-iterator
Version:
Base iterator for extract iterators like tar-iterator and zip-iterator
144 lines • 5.03 kB
JavaScript
/**
* EntryStream - Simple readable stream for entry content
*
* Extends Readable to emit 'data', 'end', 'error' events.
* Node 0.8 compatible via readable-stream polyfill.
*
* This base class is designed to be used by:
* - zip-iterator
* - 7z-iterator
* - tar-iterator
* - Any other archive iterator library
*/ "use strict";
Object.defineProperty(exports, "__esModule", {
value: true
});
Object.defineProperty(exports, "default", {
enumerable: true,
get: function() {
return EntryStream;
}
});
var _stream = /*#__PURE__*/ _interop_require_default(require("stream"));
function _assert_this_initialized(self) {
if (self === void 0) {
throw new ReferenceError("this hasn't been initialised - super() hasn't been called");
}
return self;
}
function _call_super(_this, derived, args) {
derived = _get_prototype_of(derived);
return _possible_constructor_return(_this, _is_native_reflect_construct() ? Reflect.construct(derived, args || [], _get_prototype_of(_this).constructor) : derived.apply(_this, args));
}
function _class_call_check(instance, Constructor) {
if (!(instance instanceof Constructor)) {
throw new TypeError("Cannot call a class as a function");
}
}
function _defineProperties(target, props) {
for(var i = 0; i < props.length; i++){
var descriptor = props[i];
descriptor.enumerable = descriptor.enumerable || false;
descriptor.configurable = true;
if ("value" in descriptor) descriptor.writable = true;
Object.defineProperty(target, descriptor.key, descriptor);
}
}
function _create_class(Constructor, protoProps, staticProps) {
if (protoProps) _defineProperties(Constructor.prototype, protoProps);
if (staticProps) _defineProperties(Constructor, staticProps);
return Constructor;
}
function _get_prototype_of(o) {
_get_prototype_of = Object.setPrototypeOf ? Object.getPrototypeOf : function getPrototypeOf(o) {
return o.__proto__ || Object.getPrototypeOf(o);
};
return _get_prototype_of(o);
}
function _inherits(subClass, superClass) {
if (typeof superClass !== "function" && superClass !== null) {
throw new TypeError("Super expression must either be null or a function");
}
subClass.prototype = Object.create(superClass && superClass.prototype, {
constructor: {
value: subClass,
writable: true,
configurable: true
}
});
if (superClass) _set_prototype_of(subClass, superClass);
}
function _interop_require_default(obj) {
return obj && obj.__esModule ? obj : {
default: obj
};
}
function _possible_constructor_return(self, call) {
if (call && (_type_of(call) === "object" || typeof call === "function")) {
return call;
}
return _assert_this_initialized(self);
}
function _set_prototype_of(o, p) {
_set_prototype_of = Object.setPrototypeOf || function setPrototypeOf(o, p) {
o.__proto__ = p;
return o;
};
return _set_prototype_of(o, p);
}
function _type_of(obj) {
"@swc/helpers - typeof";
return obj && typeof Symbol !== "undefined" && obj.constructor === Symbol ? "symbol" : typeof obj;
}
function _is_native_reflect_construct() {
try {
var result = !Boolean.prototype.valueOf.call(Reflect.construct(Boolean, [], function() {}));
} catch (_) {}
return (_is_native_reflect_construct = function() {
return !!result;
})();
}
// Use native streams when available, readable-stream only for Node 0.x
var major = +process.versions.node.split('.')[0];
var ReadableBase;
if (major > 0) {
ReadableBase = _stream.default.Readable;
} else {
ReadableBase = require('readable-stream').Readable;
}
var EntryStream = /*#__PURE__*/ function(ReadableBase) {
"use strict";
_inherits(EntryStream, ReadableBase);
function EntryStream() {
_class_call_check(this, EntryStream);
var _this;
_this = _call_super(this, EntryStream, arguments), _this._ended = false;
return _this;
}
var _proto = EntryStream.prototype;
/**
* Signal end of stream by pushing null
*/ _proto.end = function end() {
if (this._ended) return;
this._ended = true;
this.push(null);
};
/**
* Required by Readable - called when consumer wants data.
* Data is pushed externally via push(), nothing to do here.
*/ _proto._read = function _read(_size) {
// Data is pushed externally, nothing to do here
};
_create_class(EntryStream, [
{
key: "ended",
get: /**
* Check if stream has ended
*/ function get() {
return this._ended;
}
}
]);
return EntryStream;
}(ReadableBase);
/* CJS INTEROP */ if (exports.__esModule && exports.default) { try { Object.defineProperty(exports.default, '__esModule', { value: true }); for (var key in exports) { exports.default[key] = exports[key]; } } catch (_) {}; module.exports = exports.default; }