/**
* Dump Term Dictionary segment file entry.
* Used to write entry to .tis or .tii files
*
* @param \Zend\Search\Lucene\Storage\File $dicFile
* @param \Zend\Search\Lucene\Index\Term $prevTerm
* @param \Zend\Search\Lucene\Index\Term $term
* @param \Zend\Search\Lucene\Index\TermInfo $prevTermInfo
* @param \Zend\Search\Lucene\Index\TermInfo $termInfo
*/
protected function _dumpTermDictEntry(File $dicFile, &$prevTerm, Index\Term $term, &$prevTermInfo, Index\TermInfo $termInfo)
{
if (isset($prevTerm) && $prevTerm->field == $term->field) {
$matchedBytes = 0;
$maxBytes = min(strlen($prevTerm->text), strlen($term->text));
while ($matchedBytes < $maxBytes && $prevTerm->text[$matchedBytes] == $term->text[$matchedBytes]) {
$matchedBytes++;
}
// Calculate actual matched UTF-8 pattern
$prefixBytes = 0;
$prefixChars = 0;
while ($prefixBytes < $matchedBytes) {
$charBytes = 1;
if ((ord($term->text[$prefixBytes]) & 0xc0) == 0xc0) {
$charBytes++;
if (ord($term->text[$prefixBytes]) & 0x20) {
$charBytes++;
if (ord($term->text[$prefixBytes]) & 0x10) {
$charBytes++;
}
}
}
if ($prefixBytes + $charBytes > $matchedBytes) {
// char crosses matched bytes boundary
// skip char
break;
}
$prefixChars++;
$prefixBytes += $charBytes;
}
// Write preffix length
$dicFile->writeVInt($prefixChars);
// Write suffix
$dicFile->writeString(substr($term->text, $prefixBytes));
} else {
// Write preffix length
$dicFile->writeVInt(0);
// Write suffix
$dicFile->writeString($term->text);
}
// Write field number
$dicFile->writeVInt($term->field);
// DocFreq (the count of documents which contain the term)
$dicFile->writeVInt($termInfo->docFreq);
$prevTerm = $term;
if (!isset($prevTermInfo)) {
// Write FreqDelta
$dicFile->writeVInt($termInfo->freqPointer);
// Write ProxDelta
$dicFile->writeVInt($termInfo->proxPointer);
} else {
// Write FreqDelta
$dicFile->writeVInt($termInfo->freqPointer - $prevTermInfo->freqPointer);
// Write ProxDelta
$dicFile->writeVInt($termInfo->proxPointer - $prevTermInfo->proxPointer);
}
// Write SkipOffset - it's not 0 when $termInfo->docFreq > self::$skipInterval
if ($termInfo->skipOffset != 0) {
$dicFile->writeVInt($termInfo->skipOffset);
}
$prevTermInfo = $termInfo;
}
