LocalUniversalStringValueBlockParams.ts

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import * as pvutils from "pvutils";

import { LocalSimpleStringBlock, LocalSimpleStringBlockJson, LocalSimpleStringBlockParams } from "./LocalSimpleStringBlock";

export type LocalUniversalStringValueBlockParams = LocalSimpleStringBlockParams;

export type LocalUniversalStringValueBlockJson = LocalSimpleStringBlockJson;

export class LocalUniversalStringValueBlock extends LocalSimpleStringBlock {

  public static override NAME = "UniversalStringValueBlock";

  public override fromBuffer(inputBuffer: ArrayBuffer | Uint8Array): void {

    const copyBuffer = ArrayBuffer.isView(inputBuffer) ? inputBuffer.slice().buffer : inputBuffer.slice(0);

    const valueView = new Uint8Array(copyBuffer);

    for (let i = 0; i < valueView.length; i += 4) {

      valueView[i] = valueView[i + 3];

      valueView[i + 1] = valueView[i + 2];

      valueView[i + 2] = 0x00;

      valueView[i + 3] = 0x00;

    this.valueBlock.value = String.fromCharCode.apply(null, new Uint32Array(copyBuffer) as unknown as number[]);

  public override fromString(inputString: string): void {

    const strLength = inputString.length;

    const valueHexView = this.valueBlock.valueHexView = new Uint8Array(strLength * 4);

    for (let i = 0; i < strLength; i++) {

      const codeBuf = pvutils.utilToBase(inputString.charCodeAt(i), 8);

      const codeView = new Uint8Array(codeBuf);

      if (codeView.length > 4)

        continue;

      const dif = 4 - codeView.length;

      for (let j = (codeView.length - 1); j >= 0; j--)

        valueHexView[i * 4 + j + dif] = codeView[j];

    this.valueBlock.value = inputString;