Gittern\Transport\NativeTransport::fetchRawObject PHP Méthode

    public function fetchRawObject($sha)
    {
        // Unpacked case
        if ($this->isLoose($sha)) {
            $first = substr($sha, 0, 2);
            $last = substr($sha, 2);
            $loose_object_path = 'objects/' . $first . '/' . $last;
            $compressed_data = $this->readFileRelative($loose_object_path);
            $uncompressed_data = @gzuncompress($compressed_data);
            if ($uncompressed_data === false) {
                throw new InvalidObjectException(sprintf('Couldn\'t decompress Git object in %s.', $this->resolveRelativePath($loose_object_path)));
            }
            if (strlen($uncompressed_data) == 0) {
                throw new InvalidObjectException("Attempting to hydrate empty object");
            }
            sscanf($uncompressed_data, "%s %d", $type, $length);
            $offset = strlen($type) + strlen($length) + 2;
            //Space and NUL
            $raw_object = new RawObject($type, substr($uncompressed_data, $offset));
            if ($raw_object->getLength() !== $length) {
                throw new InvalidObjectException(sprintf("Length derived from git object header (%d) does not match actual length (%d)", $offset + $length, strlen($uncompressed_data)));
            }
            if ($raw_object->getSha() != $sha) {
                throw new InvalidObjectException(sprintf("Unexpected RawObject sha, expected %s, was %s", $sha, $raw_object->getSha()));
            }
            return $raw_object;
        } else {
            // Maybe it's packed?
            foreach ($this->getPackfiles() as $packfile) {
                if ($packfile->hasSha($sha)) {
                    return $packfile->getRawObjectForSha($sha);
                }
            }
        }
        return null;
    }