@protobi/exceljs
Version:
Excel Workbook Manager - Temporary fork with pivot table enhancements and bug fixes pending upstream merge
145 lines (142 loc) • 13.5 kB
JavaScript
;
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function _classCallCheck(a, n) { if (!(a instanceof n)) throw new TypeError("Cannot call a class as a function"); }
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function _createSuper(t) { var r = _isNativeReflectConstruct(); return function () { var e, o = _getPrototypeOf(t); if (r) { var s = _getPrototypeOf(this).constructor; e = Reflect.construct(o, arguments, s); } else e = o.apply(this, arguments); return _possibleConstructorReturn(this, e); }; }
function _possibleConstructorReturn(t, e) { if (e && ("object" == _typeof(e) || "function" == typeof e)) return e; if (void 0 !== e) throw new TypeError("Derived constructors may only return object or undefined"); return _assertThisInitialized(t); }
function _assertThisInitialized(e) { if (void 0 === e) throw new ReferenceError("this hasn't been initialised - super() hasn't been called"); return e; }
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var events = require('events');
var JSZip = require('jszip');
var StreamBuf = require('./stream-buf');
var _require = require('./browser-buffer-encode'),
stringToBuffer = _require.stringToBuffer;
// =============================================================================
// The ZipWriter class
// Packs streamed data into an output zip stream
var ZipWriter = /*#__PURE__*/function (_events$EventEmitter) {
_inherits(ZipWriter, _events$EventEmitter);
var _super = _createSuper(ZipWriter);
function ZipWriter(options) {
var _this;
_classCallCheck(this, ZipWriter);
_this = _super.call(this);
_this.options = Object.assign({
type: 'nodebuffer',
compression: 'DEFLATE'
}, options);
_this.zip = new JSZip();
_this.stream = new StreamBuf();
return _this;
}
_createClass(ZipWriter, [{
key: "append",
value: function append(data, options) {
if (options.hasOwnProperty('base64') && options.base64) {
this.zip.file(options.name, data, {
base64: true
});
} else {
// https://www.npmjs.com/package/process
if (process.browser && typeof data === 'string') {
// use TextEncoder in browser
data = stringToBuffer(data);
}
this.zip.file(options.name, data);
}
}
}, {
key: "finalize",
value: function () {
var _finalize = _asyncToGenerator(/*#__PURE__*/_regeneratorRuntime().mark(function _callee() {
var content;
return _regeneratorRuntime().wrap(function _callee$(_context) {
while (1) switch (_context.prev = _context.next) {
case 0:
_context.next = 2;
return this.zip.generateAsync(this.options);
case 2:
content = _context.sent;
this.stream.end(content);
this.emit('finish');
case 5:
case "end":
return _context.stop();
}
}, _callee, this);
}));
function finalize() {
return _finalize.apply(this, arguments);
}
return finalize;
}() // ==========================================================================
// Stream.Readable interface
}, {
key: "read",
value: function read(size) {
return this.stream.read(size);
}
}, {
key: "setEncoding",
value: function setEncoding(encoding) {
return this.stream.setEncoding(encoding);
}
}, {
key: "pause",
value: function pause() {
return this.stream.pause();
}
}, {
key: "resume",
value: function resume() {
return this.stream.resume();
}
}, {
key: "isPaused",
value: function isPaused() {
return this.stream.isPaused();
}
}, {
key: "pipe",
value: function pipe(destination, options) {
return this.stream.pipe(destination, options);
}
}, {
key: "unpipe",
value: function unpipe(destination) {
return this.stream.unpipe(destination);
}
}, {
key: "unshift",
value: function unshift(chunk) {
return this.stream.unshift(chunk);
}
}, {
key: "wrap",
value: function wrap(stream) {
return this.stream.wrap(stream);
}
}]);
return ZipWriter;
}(events.EventEmitter); // =============================================================================
module.exports = {
ZipWriter: ZipWriter
};
//# sourceMappingURL=zip-stream.js.map