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Tar::addFile(): use larger read buffer for better performance

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This commit is contained in:
Mateusz Żółtak 2024-12-07 09:51:45 +01:00
parent f931cad249
commit f15ef3a95c
1 changed files with 15 additions and 4 deletions
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19
src/Tar.php
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@ -319,16 +319,27 @@ class Tar extends Archive
throw new ArchiveIOException('Could not open file for reading: ' . $file);
}
while (!feof($fp)) {
$data = fread($fp, 512);
$read += strlen($data);
// try to read 1 MB (512 bytes is unperformant)
$data = fread($fp, 1048576);
if ($data === false) {
break;
}
if ($data === '') {
break;
}
$packed = pack("a512", $data);
$this->writebytes($packed);
$dataLen = strlen($data);
$read += $dataLen;
// how much of data read fully fills 512-byte blocks?
$passLen = ($dataLen >> 9) << 9;
if ($passLen === $dataLen) {
// all - just write the data
$this->writebytes($data);
} else {
// directly write what fills 512-byte blocks fully
$this->writebytes(substr($data, 0, $passLen));
// pad the reminder to 512 bytes
$this->writebytes(pack("a512", substr($data, $passLen)));
}
}
fclose($fp);