<?php

/**
 * @package php-font-lib
 * @link    https://github.com/dompdf/php-font-lib
 * @author  Fabien Ménager <fabien.menager@gmail.com>
 * @license http://www.gnu.org/copyleft/lesser.html GNU Lesser General Public License
 */
namespace DynamicOOOS\FontLib\WOFF;

use DynamicOOOS\FontLib\Table\DirectoryEntry;
/**
 * WOFF font file.
 *
 * @package php-font-lib
 *
 * @property TableDirectoryEntry[] $directory
 */
class File extends \DynamicOOOS\FontLib\TrueType\File
{
    function parseHeader()
    {
        if (!empty($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) {
                $data = (string) \gzuncompress($data);
            }
            // Prepare data ...
            $length = \mb_strlen($data, '8bit');
            $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();
    }
}
