iso_8583_exos/lib/bitmap/assembleBitMap_127.js

A javascript library for messaging in iso 8583 messaging format by Roy Salgado.

const T = require('../tools');

/**
  * Assembles the Bitmap of field 127.0-63 for the ISO 8583 message in the Main class Instance.
  * @function assembleBitmap_127 
  * @memberof module:Bitmap-Assemble
  */
function assembleBitmap_127() {
  let extend = this.rebuildExtensions();
  let state = this.checkMTI();
  if (state && !extend.error) {
    if (this.Msg['0'] && state) {
      let _map = new Uint8Array(64);
      for (let i = 0; i < _map.length; i++) {
        let field = '127.' + (i + 1);

        if (this.Msg[field]) {
          _map[i] = 1;
        }
      }
      return _map;
    } else return T.toErrorObject('bitmap error, iso message type undefined or invalid');
  } else return T.toErrorObject('bitmap error, iso message type undefined or invalid');
}
module.exports = assembleBitmap_127;