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<?php
/**
* @package php-font-lib
* @link https://github.com/PhenX/php-font-lib
* @author Fabien Ménager <fabien.menager@gmail.com>
* @license http://www.gnu.org/copyleft/lesser.html GNU Lesser General Public License
*/
namespace FontLib\WOFF;
use FontLib\Table\DirectoryEntry;
/**
* WOFF font file.
*
* @package php-font-lib
*
* @property TableDirectoryEntry[] $directory
*/
class File extends \FontLib\TrueType\File {
function parseHeader() {
if (!empty($this->header)) {
return;
}
$this->header = new Header($this);
$this->header->parse();
}
public function load($file) {
parent::load($file);
$this->parseTableEntries();
$dataOffset = $this->pos() + count($this->directory) * 20;
$fw = $this->getTempFile(false);
$fr = $this->f;
$this->f = $fw;
$offset = $this->header->encode();
foreach ($this->directory as $entry) {
// Read ...
$this->f = $fr;
$this->seek($entry->offset);
$data = $this->read($entry->length);
if ($entry->length < $entry->origLength) {
$data = gzuncompress($data);
}
// Prepare data ...
$length = strlen($data);
$entry->length = $entry->origLength = $length;
$entry->offset = $dataOffset;
// Write ...
$this->f = $fw;
// Woff Entry
$this->seek($offset);
$offset += $this->write($entry->tag, 4); // tag
$offset += $this->writeUInt32($dataOffset); // offset
$offset += $this->writeUInt32($length); // length
$offset += $this->writeUInt32($length); // origLength
$offset += $this->writeUInt32(DirectoryEntry::computeChecksum($data)); // checksum
// Data
$this->seek($dataOffset);
$dataOffset += $this->write($data, $length);
}
$this->f = $fw;
$this->seek(0);
// Need to re-parse this, don't know why
$this->header = null;
$this->directory = array();
$this->parseTableEntries();
}
}
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