/**
* Reads the header from the given stream.
*
* @param StreamInterface $stream The stream to read from.
*/
public function read(StreamInterface $stream)
{
$this->tag = $stream->readTag();
if ($this->tag !== self::TTCF_ID) {
throw new RuntimeException(sprintf('Invalid id provided, should be 0x%x but we got 0x%x', self::TTCF_ID, $this->tag));
}
$this->version = $stream->readFixed();
$this->numFonts = $stream->readULong();
for ($i = 0; $i < $this->numFonts; ++$i) {
$this->offsetTable[] = $stream->readULong();
}
if ($this->version > 1) {
$this->ulDsigTag = $stream->readULong();
$this->ulDsigLength = $stream->readULong();
$this->ulDsigOffset = $stream->readULong();
}
}
