function barcode_element_validate in Barcode 6.2

Same name and namespace in other branches

1. 7.2 barcode.module \barcode_element_validate()

Validate an individual barcode element.

1 string reference to 'barcode_element_validate'

barcode_elements in ./barcode.module

Implementation of FAPI hook_elements().

File

./barcode.module, line 135

Code

function barcode_element_validate($element, &$form_state) {
  $value = trim(check_plain($element['#value']));
  form_set_value($element, $value, $form_state);
  $length = strlen($value);

  // Check length.
  switch ($element['#encoding']) {
    case 'ISBN':
      if ($length != $element['#maxlength']) {
        form_error($element, t('The barcode must have %count digits.', array(
          '%count' => $element['#maxlength'],
        )));
      }
      break;
    case 'POSTNET':
      if ($length != 5 and $length != 9 and $length != 11) {
        form_error($element, t('Postnet number must have 5, 9 or 11 digits.'));
      }
      break;
  }

  // Check ISBN start sequence.
  if ($element['#encoding'] == 'ISBN' and substr($value, 0, 3) != '978') {
    form_error($element, t('ISBN barcode number must start with 978.'));
  }
  return $element;
}