original_string: protected function _deleteOldUpload(Entity $entity, $field = false, $newFile = false, array $options = [])
      {
          if ($field === false || $newFile === false) {
              return true;
          }
  
          $fileInfo = pathinfo($entity->$field);
          $newFileInfo = pathinfo($newFile);
  
          if (isset($options['defaultFile']) && (is_bool($options['defaultFile']) || is_string($options['defaultFile']))) {
              $this->_defaultFile = $options['defaultFile'];
          }
  
          if ($fileInfo['basename'] == $newFileInfo['basename'] ||
              $fileInfo['basename'] == pathinfo($this->_defaultFile)['basename']) {
              return true;
          }
  
          if ($this->_prefix) {
              $entity->$field = str_replace($this->_prefix, "", $entity->$field);
          }
  
          $file = new File($this->_config['root'] . $entity->$field, false);
  
          if ($file->exists()) {
              $file->delete();
              return true;
          }
  
          return false;
      }
code: protected function _deleteOldUpload(Entity $entity, $field = false, $newFile = false, array $options = [])
      {
          if ($field === false || $newFile === false) {
              return true;
          }
  
          $fileInfo = pathinfo($entity->$field);
          $newFileInfo = pathinfo($newFile);
  
          if (isset($options['defaultFile']) && (is_bool($options['defaultFile']) || is_string($options['defaultFile']))) {
              $this->_defaultFile = $options['defaultFile'];
          }
  
          if ($fileInfo['basename'] == $newFileInfo['basename'] ||
              $fileInfo['basename'] == pathinfo($this->_defaultFile)['basename']) {
              return true;
          }
  
          if ($this->_prefix) {
              $entity->$field = str_replace($this->_prefix, "", $entity->$field);
          }
  
          $file = new File($this->_config['root'] . $entity->$field, false);
  
          if ($file->exists()) {
              $file->delete();
              return true;
          }
  
          return false;
      }
code_tokens: protected function _deleteOldUpload ( Entity $ entity , $ field = false , $ newFile = false , array $ options = [ ] ) { if ( $ field === false || $ newFile === false ) { return true ; } $ fileInfo = pathinfo ( $ entity -> $ field ) ; $ newFileInfo = pathinfo ( $ newFile ) ; if ( isset ( $ options [ 'defaultFile' ] ) && ( is_bool ( $ options [ 'defaultFile' ] ) || is_string ( $ options [ 'defaultFile' ] ) ) ) { $ this -> _defaultFile = $ options [ 'defaultFile' ] ; } if ( $ fileInfo [ 'basename' ] == $ newFileInfo [ 'basename' ] || $ fileInfo [ 'basename' ] == pathinfo ( $ this -> _defaultFile ) [ 'basename' ] ) { return true ; } if ( $ this -> _prefix ) { $ entity -> $ field = str_replace ( $ this -> _prefix , "" , $ entity -> $ field ) ; } $ file = new File ( $ this -> _config [ 'root' ] . $ entity -> $ field , false ) ; if ( $ file -> exists ( ) ) { $ file -> delete ( ) ; return true ; } return false ; }
docstring: Delete the old upload file before to save the new file.
  
  We can not just rely on the copy file with the overwrite, because if you use
  an identifier like :md5 (Who use a different name for each file), the copy
  function will not delete the old file.
  
  @param \Cake\ORM\Entity $entity  The entity that is going to be saved.
  @param bool|string      $field   The current field to process.
  @param bool|string      $newFile The new file path.
  @param array            $options The configuration options defined by the user.
  
  @return bool
docstring_tokens: Delete the old upload file before to save the new file .