yaffs.net Git - yaffs-website/blob - vendor/phenx/php-font-lib/src/FontLib/WOFF/File.php

   1 <?php
   2 /**
   3  * @package php-font-lib
   4  * @link    https://github.com/PhenX/php-font-lib
   5  * @author  Fabien Ménager <fabien.menager@gmail.com>
   6  * @license http://www.gnu.org/copyleft/lesser.html GNU Lesser General Public License
   7  */
   8
   9 namespace FontLib\WOFF;
  10
  11 use FontLib\Table\DirectoryEntry;
  12
  13 /**
  14  * WOFF font file.
  15  *
  16  * @package php-font-lib
  17  *
  18  * @property TableDirectoryEntry[] $directory
  19  */
  20 class File extends \FontLib\TrueType\File {
  21   function parseHeader() {
  22     if (!empty($this->header)) {
  23       return;
  24     }
  25
  26     $this->header = new Header($this);
  27     $this->header->parse();
  28   }
  29
  30   public function load($file) {
  31     parent::load($file);
  32
  33     $this->parseTableEntries();
  34     $dataOffset = $this->pos() + count($this->directory) * 20;
  35
  36     $fw = $this->getTempFile(false);
  37     $fr = $this->f;
  38
  39     $this->f = $fw;
  40     $offset  = $this->header->encode();
  41
  42     foreach ($this->directory as $entry) {
  43       // Read ...
  44       $this->f = $fr;
  45       $this->seek($entry->offset);
  46       $data = $this->read($entry->length);
  47
  48       if ($entry->length < $entry->origLength) {
  49         $data = gzuncompress($data);
  50       }
  51
  52       // Prepare data ...
  53       $length        = strlen($data);
  54       $entry->length = $entry->origLength = $length;
  55       $entry->offset = $dataOffset;
  56
  57       // Write ...
  58       $this->f = $fw;
  59
  60       // Woff Entry
  61       $this->seek($offset);
  62       $offset += $this->write($entry->tag, 4); // tag
  63       $offset += $this->writeUInt32($dataOffset); // offset
  64       $offset += $this->writeUInt32($length); // length
  65       $offset += $this->writeUInt32($length); // origLength
  66       $offset += $this->writeUInt32(DirectoryEntry::computeChecksum($data)); // checksum
  67
  68       // Data
  69       $this->seek($dataOffset);
  70       $dataOffset += $this->write($data, $length);
  71     }
  72
  73     $this->f = $fw;
  74     $this->seek(0);
  75
  76     // Need to re-parse this, don't know why
  77     $this->header    = null;
  78     $this->directory = array();
  79     $this->parseTableEntries();
  80   }
  81 }