byte-rw/dist/dataview/writer-async-chunked.js

Byte reader/writer for buffers and streams in typescript/javascript

var __awaiter = (this && this.__awaiter) || function (thisArg, _arguments, P, generator) {
    function adopt(value) { return value instanceof P ? value : new P(function (resolve) { resolve(value); }); }
    return new (P || (P = Promise))(function (resolve, reject) {
        function fulfilled(value) { try { step(generator.next(value)); } catch (e) { reject(e); } }
        function rejected(value) { try { step(generator["throw"](value)); } catch (e) { reject(e); } }
        function step(result) { result.done ? resolve(result.value) : adopt(result.value).then(fulfilled, rejected); }
        step((generator = generator.apply(thisArg, _arguments || [])).next());
    });
};
import { DataViewByteWriterAsync } from "./writer-async.js";
export class DataViewByteWriterAsyncChunked extends DataViewByteWriterAsync {
    constructor(littleEndian, defaultChunkSize = 4096) {
        super(new DataView(new ArrayBuffer(defaultChunkSize)), littleEndian);
        this.defaultChunkSize = defaultChunkSize;
    }
    complete() {
        const _super = Object.create(null, {
            complete: { get: () => super.complete }
        });
        return __awaiter(this, void 0, void 0, function* () {
            const toSave = this._byteOffset;
            const saved = yield this.save();
            if (saved != toSave)
                throw new Error("not all queued bytes could be saved");
            yield _super.complete.call(this);
        });
    }
    tryEnsureAvailable(bytes) {
        return __awaiter(this, void 0, void 0, function* () {
            if (this._isComplete)
                return 0;
            if (this._bytesRemaining < bytes) {
                const saved = yield this.save();
                if (saved !== this._dataview.byteLength) {
                    this._isComplete = true;
                    return 0;
                }
                else {
                    this._dataview = new DataView(new ArrayBuffer(Math.max(bytes, this.defaultChunkSize)));
                    this._byteOffset = 0;
                }
            }
            return bytes;
        });
    }
}