demo/connections/third-party/qr/qr.js
function appendData(data, dataLength, ecc, eccLength) {
    var bit, i, j;

    for (i = 0; i < eccLength; i++) {
      stringBuffer[ecc + i] = 0;
    }

    for (i = 0; i < dataLength; i++) {
      bit = GALOIS_LOG[stringBuffer[data + i] ^ stringBuffer[ecc]];

      if (bit !== 255) {
        for (j = 1; j < eccLength; j++) {
          stringBuffer[ecc + j - 1] = stringBuffer[ecc + j] ^
              GALOIS_EXPONENT[modN(bit + polynomial[eccLength - j])];
        }
      } else {
        for (j = ecc; j < ecc + eccLength; j++) {
          stringBuffer[j] = stringBuffer[j + 1];
        }
      }

      stringBuffer[ecc + eccLength - 1] = bit === 255 ? 0 :
          GALOIS_EXPONENT[modN(bit + polynomial[0])];
    }
  }
function appendData(data, dataLength, ecc, eccLength) {
    var bit, i, j;

    for (i = 0; i < eccLength; i++) {
      stringBuffer[ecc + i] = 0;
    }

    for (i = 0; i < dataLength; i++) {
      bit = GALOIS_LOG[stringBuffer[data + i] ^ stringBuffer[ecc]];

      if (bit !== 255) {
        for (j = 1; j < eccLength; j++) {
          stringBuffer[ecc + j - 1] = stringBuffer[ecc + j] ^
              GALOIS_EXPONENT[modN(bit + polynomial[eccLength - j])];
        }
      } else {
        for (j = ecc; j < ecc + eccLength; j++) {
          stringBuffer[j] = stringBuffer[j + 1];
        }
      }

      stringBuffer[ecc + eccLength - 1] = bit === 255 ? 0 :
          GALOIS_EXPONENT[modN(bit + polynomial[0])];
    }
  }
function appendData ( data , dataLength , ecc , eccLength ) { var bit , i , j ; for ( i = 0 ; i < eccLength ; i ++ ) { stringBuffer [ ecc + i ] = 0 ; } for ( i = 0 ; i < dataLength ; i ++ ) { bit = GALOIS_LOG [ stringBuffer [ data + i ] ^ stringBuffer [ ecc ] ] ; if ( bit !== 255 ) { for ( j = 1 ; j < eccLength ; j ++ ) { stringBuffer [ ecc + j - 1 ] = stringBuffer [ ecc + j ] ^ GALOIS_EXPONENT [ modN ( bit + polynomial [ eccLength - j ] ) ] ; } } else { for ( j = ecc ; j < ecc + eccLength ; j ++ ) { stringBuffer [ j ] = stringBuffer [ j + 1 ] ; } } stringBuffer [ ecc + eccLength - 1 ] = bit === 255 ? 0 : GALOIS_EXPONENT [ modN ( bit + polynomial [ 0 ] ) ] ; } }
Calculate and append `ecc` data to the `data` block. If block is in the string buffer the indices to buffers are used.
Calculate and append ecc data to the data block . If block is in the string buffer the indices to buffers are used .