debugDumpHexBytes.js

**
 * Debug dump bytes in hexadecimal format 16-bytes per row
 *
 * Example Output:
 * \code
 *    ------------------------
 *    0000  bd 7a 32 13 08 1c 1e d9  -  c9 48 48 0b 5f 23 1a f5
 *    0010  72 3d 8f 7a e6 2c 07 e4  -  6e 45 79 0f cb 18 13 6f
 *    ------------------------
 * \endcode
 * 
 * @param {*} buffer
 * @param {*} offsetStart
 * @param {*} length
 */
function debugDumpHexBytes(buffer, offsetStart, length) {
    let i = 0;
    let row = 0;

    console.log('------------------------');

    while( length > i) {
      let rowData = '';
      for(let col = 0; col < 16; ++col ) {
        if( length <= i ) {
          break;
        }

        let spacer = ' ';
        if( 7 === col ) {
          spacer = '  ';
        }
        rowData = rowData + ('00' + buffer[i].toString(16)).substr(-2) + spacer;
        ++i;
      }
      console.log(('0000' + row.toString(16)).substr(-4) + ': ' + rowData);
      row = row + 16;
    }
    console.log('------------------------');
}