original_string: private function _loadNorm($fieldNum)
      {
          if ($this->_hasSingleNormFile) {
              $normfFile = $this->openCompoundFile('.nrm');
  
              $header              = $normfFile->readBytes(3);
              $headerFormatVersion = $normfFile->readByte();
  
              if ($header != 'NRM'  ||  $headerFormatVersion != (int)0xFF) {
                  require_once 'Zend/Search/Lucene/Exception.php';
                  throw new  Zend_Search_Lucene_Exception('Wrong norms file format.');
              }
  
              foreach ($this->_fields as $fNum => $fieldInfo) {
                  if ($fieldInfo->isIndexed) {
                      $this->_norms[$fNum] = $normfFile->readBytes($this->_docCount);
                  }
              }
          } else {
              $fFile = $this->openCompoundFile('.f' . $fieldNum);
              $this->_norms[$fieldNum] = $fFile->readBytes($this->_docCount);
          }
      }
code: private function _loadNorm($fieldNum)
      {
          if ($this->_hasSingleNormFile) {
              $normfFile = $this->openCompoundFile('.nrm');
  
              $header              = $normfFile->readBytes(3);
              $headerFormatVersion = $normfFile->readByte();
  
              if ($header != 'NRM'  ||  $headerFormatVersion != (int)0xFF) {
                  require_once 'Zend/Search/Lucene/Exception.php';
                  throw new  Zend_Search_Lucene_Exception('Wrong norms file format.');
              }
  
              foreach ($this->_fields as $fNum => $fieldInfo) {
                  if ($fieldInfo->isIndexed) {
                      $this->_norms[$fNum] = $normfFile->readBytes($this->_docCount);
                  }
              }
          } else {
              $fFile = $this->openCompoundFile('.f' . $fieldNum);
              $this->_norms[$fieldNum] = $fFile->readBytes($this->_docCount);
          }
      }
code_tokens: private function _loadNorm ( $ fieldNum ) { if ( $ this -> _hasSingleNormFile ) { $ normfFile = $ this -> openCompoundFile ( '.nrm' ) ; $ header = $ normfFile -> readBytes ( 3 ) ; $ headerFormatVersion = $ normfFile -> readByte ( ) ; if ( $ header != 'NRM' || $ headerFormatVersion != ( int ) 0xFF ) { require_once 'Zend/Search/Lucene/Exception.php' ; throw new Zend_Search_Lucene_Exception ( 'Wrong norms file format.' ) ; } foreach ( $ this -> _fields as $ fNum => $ fieldInfo ) { if ( $ fieldInfo -> isIndexed ) { $ this -> _norms [ $ fNum ] = $ normfFile -> readBytes ( $ this -> _docCount ) ; } } } else { $ fFile = $ this -> openCompoundFile ( '.f' . $ fieldNum ) ; $ this -> _norms [ $ fieldNum ] = $ fFile -> readBytes ( $ this -> _docCount ) ; } }
docstring: Load normalizatin factors from an index file
  
  @param integer $fieldNum
  @throws Zend_Search_Lucene_Exception
docstring_tokens: Load normalizatin factors from an index file