/**
* @param Index $index
*/
public function __construct(Index $index)
{
$this->index = $index;
$this->filename = $index->getInfo()->getDictFilename();
$this->isCompressed = Info::isCompressedFile($this->filename);
$this->open();
}
/**
* Reads index data.
*
* @throws IndexException
*/
protected function readFile()
{
$filename = $this->getFilename();
$data = file_get_contents($filename);
$fsize = filesize($filename);
if ($data && Info::isCompressedFile($filename)) {
$data = gzdecode($data);
$fsize = strlen($data);
}
if (!$data) {
throw new IndexException($this, 'Read data error.');
}
if ($fsize != $this->info->idxfilesize) {
throw new IndexException($this, 'Index file size mismatch.');
}
$pos = 0;
while ($pos < $fsize) {
$chars = [];
while (true) {
$x = unpack("@{$pos}/Cch", $data);
$pos++;
if ($x['ch'] === 0) {
break;
}
$chars[] = $x['ch'];
}
$word = call_user_func_array('pack', array_merge(['C*'], $chars));
$x = unpack("@{$pos}/Noffset/Nsize", $data);
$this->words[$word] = [$x['offset'], $x['size']];
$pos += 8;
}
}
