zip-iterator
Version:
Extract contents from zip archive type using an iterator API using streams or paths. Use stream interface and pipe transforms to add decompression algorithms
305 lines • 12.1 kB
JavaScript
;
Object.defineProperty(exports, "__esModule", {
value: true
});
Object.defineProperty(exports, "default", {
enumerable: true,
get: function() {
return ZipIterator;
}
});
var _extractbaseiterator = /*#__PURE__*/ _interop_require_wildcard(require("extract-base-iterator"));
var _gracefulfs = /*#__PURE__*/ _interop_require_default(require("graceful-fs"));
var _mkdirpclassic = /*#__PURE__*/ _interop_require_default(require("mkdirp-classic"));
var _onone = /*#__PURE__*/ _interop_require_default(require("on-one"));
var _os = /*#__PURE__*/ _interop_require_default(require("os"));
var _path = /*#__PURE__*/ _interop_require_default(require("path"));
var _createEntryts = /*#__PURE__*/ _interop_require_default(require("./createEntry.js"));
var _indexts = require("./zip/index.js");
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 _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 _getRequireWildcardCache(nodeInterop) {
if (typeof WeakMap !== "function") return null;
var cacheBabelInterop = new WeakMap();
var cacheNodeInterop = new WeakMap();
return (_getRequireWildcardCache = function(nodeInterop) {
return nodeInterop ? cacheNodeInterop : cacheBabelInterop;
})(nodeInterop);
}
function _interop_require_wildcard(obj, nodeInterop) {
if (!nodeInterop && obj && obj.__esModule) {
return obj;
}
if (obj === null || typeof obj !== "object" && typeof obj !== "function") {
return {
default: obj
};
}
var cache = _getRequireWildcardCache(nodeInterop);
if (cache && cache.has(obj)) {
return cache.get(obj);
}
var newObj = {
__proto__: null
};
var hasPropertyDescriptor = Object.defineProperty && Object.getOwnPropertyDescriptor;
for(var key in obj){
if (key !== "default" && Object.prototype.hasOwnProperty.call(obj, key)) {
var desc = hasPropertyDescriptor ? Object.getOwnPropertyDescriptor(obj, key) : null;
if (desc && (desc.get || desc.set)) {
Object.defineProperty(newObj, key, desc);
} else {
newObj[key] = obj[key];
}
}
}
newObj.default = obj;
if (cache) {
cache.set(obj, newObj);
}
return newObj;
}
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;
})();
}
// Get temp directory
var tmpdir = _os.default.tmpdir || _os.default.tmpdir || function() {
return '/tmp';
};
var ZipIterator = /*#__PURE__*/ function(BaseIterator) {
"use strict";
_inherits(ZipIterator, BaseIterator);
function ZipIterator(source) {
var options = arguments.length > 1 && arguments[1] !== void 0 ? arguments[1] : {};
_class_call_check(this, ZipIterator);
var _this;
_this = _call_super(this, ZipIterator, [
options
]);
var lock = new _extractbaseiterator.Lock();
_this.lock = lock;
lock.onDestroy = function(err) {
return _extractbaseiterator.default.prototype.end.call(_this, err);
};
_this.centralDir = null;
_this.tempPath = null;
_this.streamingMode = options.streaming === true;
// Keep a setup function in processing to prevent BaseIterator from calling end()
// prematurely when stack becomes empty between entry events.
// This is removed in end() when the iterator actually completes.
var cancelled = false;
var setup = function setup() {
cancelled = true;
};
_this.processing.push(setup);
lock.setup = setup;
// Create the forward-only parser
_this.extract = new _indexts.ZipExtract();
if (typeof source === 'string') {
// For file inputs, read Central Directory first for better type detection
(0, _indexts.readCentralDirectory)(source, function(err, map) {
// Check if iterator was destroyed while we were reading CD
if (_this.done || cancelled) return;
if (!err && map) {
_this.centralDir = map;
}
// Even if CD read fails, continue with forward-only parsing
_this.startStreaming(_gracefulfs.default.createReadStream(source));
});
} else if (_this.streamingMode) {
// Pure streaming mode - no temp file, rely on ASi extra fields for symlinks
_this.startStreaming(source);
} else {
// Default: buffer stream to temp file to get Central Directory access
_this.bufferStreamAndStart(source);
}
return _this;
}
var _proto = ZipIterator.prototype;
_proto.bufferStreamAndStart = function bufferStreamAndStart(source) {
var _this = this;
// Ensure temp directory exists (may not exist on Windows with Node 0.8 fallback to /tmp)
var _tmpdir = tmpdir();
_mkdirpclassic.default.sync(_tmpdir);
// Generate temp file path
this.tempPath = _path.default.join(_tmpdir, "zip-iterator-".concat(Date.now(), "-").concat(Math.random().toString(36).slice(2), ".tmp"));
// Register cleanup for temp file
var tempPath = this.tempPath;
this.lock.registerCleanup(function() {
_gracefulfs.default.unlink(tempPath, function() {});
});
var writeStream = _gracefulfs.default.createWriteStream(this.tempPath);
// Handle source errors
source.on('error', function(err) {
var ws = writeStream;
if (typeof ws.destroy === 'function') ws.destroy();
_this.end(err);
});
// Handle write completion using on-one for Node 0.8 compatibility
// Note: Node 0.8 may only emit 'close', not 'finish'. We use waitForAccess
// to handle Windows where 'close' can fire before file is fully written.
(0, _onone.default)(writeStream, [
'error',
'finish',
'close'
], function(err) {
if (err) {
_this.end(err);
return;
}
if (_this.done) return;
// Wait for file to be accessible (handles Windows timing issues)
(0, _extractbaseiterator.waitForAccess)(tempPath, function() {
if (_this.done) return;
// Read Central Directory from temp file
(0, _indexts.readCentralDirectory)(tempPath, function(cdErr, map) {
if (_this.done) return;
if (!cdErr && map) _this.centralDir = map;
// Start streaming from temp file
_this.startStreaming(_gracefulfs.default.createReadStream(tempPath));
});
});
});
source.pipe(writeStream);
};
_proto.startStreaming = function startStreaming(stream) {
var _this = this;
// Guard: if iterator was destroyed before async callback, clean up and exit
if (!this.lock) {
var s = stream;
if (typeof s.destroy === 'function') s.destroy();
return;
}
// Register cleanup for source stream
this.lock.registerCleanup(function() {
var s = stream;
if (typeof s.destroy === 'function') {
s.destroy();
}
});
var extract = this.extract;
this.lock.registerCleanup(function() {
extract.end();
});
extract.on('entry', function(header, entryStream, next) {
if (_this.done) {
next();
return;
}
var cdEntry = _this.centralDir ? _this.centralDir[header.fileName] : null;
_this.push(function(_iterator, callback) {
if (!_this.lock) {
next();
callback();
return;
}
(0, _createEntryts.default)(header, entryStream, _this.lock, next, callback, cdEntry);
});
});
extract.on('error', function(err) {
_this.end(err);
});
extract.on('finish', function() {
if (!_this.done) {
_this.end();
}
});
// NOW set up stream handlers - data will start flowing after 'data' handler is attached
stream.on('data', function(chunk) {
if (!_this.done && _this.extract) {
_this.extract.write(chunk);
}
});
// Handle stream end/error using on-one for Node 0.8 compatibility
(0, _onone.default)(stream, [
'error',
'end',
'close'
], function(err) {
if (err) {
_this.end(err);
} else if (_this.extract) {
// Signal end to parser - it will emit 'finish' or 'error' which will trigger cleanup
_this.extract.end();
}
});
};
_proto.end = function end(err) {
var lock = this.lock;
if (lock) {
this.lock = null; // Clear FIRST to prevent re-entrancy
// Remove setup from processing before release
if (lock.setup) {
this.processing.remove(lock.setup);
lock.setup = null;
}
lock.err = err !== null && err !== void 0 ? err : null;
lock.release();
}
// Clear local refs (always runs, safe/idempotent)
this.extract = null;
this.centralDir = null;
this.tempPath = null;
};
return ZipIterator;
}(_extractbaseiterator.default);
/* 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; }