qrcode-generator-ts/ts/qrcode/QRData.ts

Typescript QR Code generator based on https://github.com/kazuhikoarase/qrcode-generator

import { Mode } from './Mode';
import { BitBuffer } from './BitBuffer';

'use strict';
/**
 * QRData
 * @author Kazuhiko Arase
 */
export abstract class QRData {

  constructor(private mode: Mode, private data: string) {
  }

  public getMode(): Mode {
    return this.mode;
  }

  public getData(): string {
    return this.data;
  }

  public abstract getLength(): number;

  public abstract write(buffer: BitBuffer): void;

  public getLengthInBits(typeNumber: number): number {

    if (1 <= typeNumber && typeNumber < 10) {

      // 1 - 9

      switch (this.mode) {
        case Mode.MODE_NUMBER: return 10;
        case Mode.MODE_ALPHA_NUM: return 9;
        case Mode.MODE_8BIT_BYTE: return 8;
        case Mode.MODE_KANJI: return 8;
        default:
          throw 'mode:' + this.mode;
      }

    } else if (typeNumber < 27) {

      // 10 - 26

      switch (this.mode) {
        case Mode.MODE_NUMBER: return 12;
        case Mode.MODE_ALPHA_NUM: return 11;
        case Mode.MODE_8BIT_BYTE: return 16;
        case Mode.MODE_KANJI: return 10;
        default:
          throw 'mode:' + this.mode;
      }

    } else if (typeNumber < 41) {

      // 27 - 40

      switch (this.mode) {
        case Mode.MODE_NUMBER: return 14;
        case Mode.MODE_ALPHA_NUM: return 13;
        case Mode.MODE_8BIT_BYTE: return 16;
        case Mode.MODE_KANJI: return 12;
        default:
          throw 'mode:' + this.mode;
      }

    } else {
      throw 'typeNumber:' + typeNumber;
    }
  }
}