Method readHeader

lang/php/lib/DataFile/AvroDataIOReader.php:107–135

* Reads header of object container * @throws AvroDataIOException if the file is not an Avro data file. */

()

     * @throws AvroDataIOException if the file is not an Avro data file.
     */
    private function readHeader()
    {
        $this->seek(0, AvroIO::SEEK_SET);

        $magic = $this->read(AvroDataIO::magicSize());

        if (strlen($magic) < AvroDataIO::magicSize()) {
            throw new AvroDataIOException(
                'Not an Avro data file: shorter than the Avro magic block'
            );
        }

        if (AvroDataIO::magic() != $magic) {
            throw new AvroDataIOException(
                sprintf(
                    'Not an Avro data file: %s does not match %s',
                    $magic,
                    AvroDataIO::magic()
                )
            );
        }

        $this->metadata = $this->datum_reader->readData(
            AvroDataIO::metadataSchema(),
            AvroDataIO::metadataSchema(),
            $this->decoder
        );
        $this->sync_marker = $this->read(AvroDataIO::SYNC_SIZE);
    }

    /**
     * @uses AvroIO::seek()