<?php

require_once('BitStream.php'); // {Input|Output}BitStream
require_once('FlashSWF/TagBlock.php'); // 

class FlashSWF {
        private $_header = array();
    private $_block_list = array();
        function __construct() {
      return ;
    }
        function loadfile($filename) {
            $swfdata = file_get_contents($filename);
        if ($swfdata === FALSE) {
          // throw Exception("Can't open file($filename)");
                return FALSE;
        }
            $this->load($swfdata);
    }
        function load($swfdata) {
            $ibs = new InputBitStream($swfdata);
        $magic = $ibs->getStrings(3);
        $version = $ibs->getByte();
        $filelength = $ibs->getBytesLE(4);
                $this->_header['magic'] = $magic;
                $this->_header['version'] = $version;
        $this->_header['filelength'] = $filelength;
        if ($magic == 'FWS') {
                ;
        } elseif ($magic == 'CWS') {
                $movie_and_body = gzuncompress($ibs->getStrings(), $filelength);
            $ibs = new InputBitStream($movie_and_body);
        } else {
                return ;
        }
        $this->_header['movie_header'] = $this->get_movie_header($ibs);
        while(true) {
          $block = FlashSWF_TagBlock::Factory($ibs);
          $this->_block_list[] = $block;
          if ($block->getTagId() == 0) {
            break;
          }
        }
    }
    function get_movie_header(&$ibs) {
      $movie_header = array();
      $movie_align = $ibs->getBits(5);
      $movie_header['align'] = $movie_align;
      $movie_header['x_min'] = $ibs->getBits($movie_align);
      $movie_header['x_max'] = $ibs->getBits($movie_align);
      $movie_header['y_min'] = $ibs->getBits($movie_align);
      $movie_header['y_max'] = $ibs->getBits($movie_align);
      $ibs->align();
      $movie_header['frame_rate_decimal'] = $ibs->getByte();
      $movie_header['frame_rate_integer'] = $ibs->getByte();
      $movie_header['frame_rate_count'] = $ibs->getBytesLE(2);
      return array($movie_header);
    }
        function savefile($filename) {
            $swfdata = $this->save();
        file_put_contents($filename, $swfdata);
    }
        function save() {
      $header = "";
      $movie_header = "";
      $data = "";
      return $header . $movie_header . $data;
    }
    function dump() {
                var_dump($this->_header);
        foreach ($this->_block_list as $block) {
          $block->dump();
        }
    }
}