cnf-barcode/src/lib/barcodes/codabar/index.js

a barcode generator

// Encoding specification:
// http://www.barcodeisland.com/codabar.phtml

import Barcode from "../Barcode.js";

class codabar extends Barcode {
  constructor(data, options) {
    if (data.search(/^[0-9\-\$\:\.\+\/]+$/) === 0) {
      data = `A${data}A`;
    }

    super(data.toUpperCase(), options);

    this.text = this.options.text || this.text.replace(/[A-D]/g, '');
  }

  valid() {
    return this.data.search(/^[A-D][0-9\-\$\:\.\+\/]+[A-D]$/) !== -1;
  }

  encode() {
    const result = [];
    const encodings = this.getEncodings();
    for (let i = 0; i < this.data.length; i++) {
      result.push(encodings[this.data.charAt(i)]);
      // for all characters except the last, append a narrow-space ("0")
      if (i !== this.data.length - 1) {
        result.push("0");
      }
    }
    return {
      text: this.text,
      data: result.join(''),
    };
  }

  getEncodings() {
    return {
      0: "101010011",
      1: "101011001",
      2: "101001011",
      3: "110010101",
      4: "101101001",
      5: "110101001",
      6: "100101011",
      7: "100101101",
      8: "100110101",
      9: "110100101",
      "-": "101001101",
      $: "101100101",
      ":": "1101011011",
      "/": "1101101011",
      ".": "1101101101",
      "+": "101100110011",
      A: "1011001001",
      B: "1001001011",
      C: "1010010011",
      D: "1010011001",
    };
  }
}

export { codabar };