/**
* Read a specific lump. Currently only supports entities.
*
* @param $index
* @throws \Exception
*/
private function readLump($index)
{
$info = $this->lumpHeader[$index];
$this->buffer->seek($info['fileofs']);
if ($index === 0) {
$hdr = $this->buffer->peek(4);
if ($hdr == 'LZMA') {
// Team Fortress 2
// Decompress
$buffer = $this->decompressLZMALump($this->buffer);
} else {
$buffer = $this->buffer->slice($info['filelen']);
}
$parts = explode("}", $buffer->getData());
$lump = [];
foreach ($parts as $data) {
$data = trim($data);
if (strlen($data) < 1 || $data[0] != '{') {
continue;
}
$lump[] = KeyValues::decode("\"Entity\"\n" . trim($data) . "\n}")['Entity'];
}
} else {
if ($index === 40) {
$file = tempnam(sys_get_temp_dir(), 'zip');
$tmp = fopen($file, 'w');
$remaining = $info['filelen'];
while ($remaining > 0) {
$chunk = $this->buffer->read($remaining > CHUNK_SIZE ? CHUNK_SIZE : $remaining);
fwrite($tmp, $chunk);
$remaining -= strlen($chunk);
}
$lump = new PakFile($file);
}
}
return $lump;
}
