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

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

import { DataViewByteWriter } from "./writer.js";
export class DataViewByteWriterChunked extends DataViewByteWriter {
    constructor(littleEndian, defaultChunkSize = 4096) {
        super(new DataView(new ArrayBuffer(defaultChunkSize)), littleEndian);
        this.defaultChunkSize = defaultChunkSize;
    }
    complete() {
        if (this._isComplete)
            return;
        const toSave = this._byteOffset;
        const saved = this.save();
        if (saved != toSave)
            throw new Error("not all queued bytes could be saved");
        this._dataview = new DataView(new ArrayBuffer(0));
        this._byteOffset = 0;
        super.complete();
    }
    tryEnsureAvailable(bytes) {
        if (this._isComplete)
            return 0;
        if (this._bytesRemaining < bytes) {
            const saved = this.save();
            if (saved !== this._byteOffset) {
                this._isComplete = true;
                return 0;
            }
            else {
                this._dataview = new DataView(new ArrayBuffer(Math.max(bytes, this.defaultChunkSize)));
                this._byteOffset = 0;
            }
        }
        return bytes;
    }
}