Lines Matching defs:head

113      *     if success returns array(fp, array(changeloglines), $head, $tail, $eof)
126         $head = 0;
147             while ($tail - $head > $this->chunk_size) {
148                 $finger = $head + (int)(($tail - $head) / 2);
151                 if ($finger == $head || $finger == $tail) {
160                     $head = $finger;
164             if ($tail - $head < 1) {
170             $lines = $this->readChunk($fp, $head, $tail);
172         return [$fp, $lines, $head, $tail, $eof];
177      * Has no check if $head and $tail are really at a new line
180      * @param int $head start point chunk
184     protected function readChunk($fp, $head, $tail)
187         $chunk_size = max($tail - $head, 0); // found chunk size
189         fseek($fp, $head);
222      * Returns the next lines of the changelog  of the chunk before head or after tail
225      * @param int $head position head of last chunk
230      *    - $head: head of chunk
233     protected function readAdjacentChunk($fp, $head, $tail, $direction)
235         if (!$fp) return [[], $head, $tail];
239             $head = $tail;
240             $tail = $head + (int)($this->chunk_size * (2 / 3));
244             $tail = $head;
245             $head = max($tail - $this->chunk_size, 0);
247                 $nl = $this->getNewlinepointer($fp, $head);
250                     $head = max($head - $this->chunk_size, 0);
252                     $head = $nl;
259         $lines = $this->readChunk($fp, $head, $tail);
260         return [$lines, $head, $tail];