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<?php
 
/*
 * 2011/06/03- (c) yoya@awm.jp
 */
 
require_once 'IO/Bit.php';
require_once dirname(__FILE__).'/Base.php';
require_once dirname(__FILE__).'/../Type/Action.php';
 
class IO_SWF_Tag_Action extends IO_SWF_Tag_Base {
    var $_actions = array();
 
   function parseContent($tagCode, $content, $opts = array()) {
        $reader = new IO_Bit();
    	$reader->input($content);
        while ($reader->getUI8() != 0) {
            $reader->incrementOffset(-1, 0); // 1 byte back
            $action = IO_SWF_Type_Action::parse($reader);
            $this->_actions [] = $action;
        }
        // ActionEndFlag
    }
 
    function dumpContent($tagCode, $opts = array()) {
        echo "    Actions:\n";
        foreach ($this->_actions as $action) {
            $action_str = IO_SWF_Type_Action::string($action);
            echo "\t$action_str\n";
        }
    }
 
    function buildContent($tagCode, $opts = array()) {
        $writer = new IO_Bit();
        foreach ($this->_actions as $action) {
            IO_SWF_Type_Action::build($writer, $action);
        }
        $writer->putUI8(0); // ActionEndFlag
    	return $writer->output();
    }
    function replaceActionStrings($from_str, $to_str) {
        foreach ($this->_actions as &$action) {
            switch($action['Code']) {
            case 0x83: // ActionGetURL
                ;
                if ($action['UrlString'] === $from_str) {
                    $action['UrlString'] = $to_str;
                }
                if ($action['TargetString'] === $from_str) {
                    $action['TargetString'] = $to_str;
                }
                break;
            case 0x88: // ActionConstantPool
                foreach ($action['ConstantPool'] as $idx_cp => $cp) {
                    if ($cp === $from_str) {
                        $action['ConstantPool'][$idx_cp] = $to_str;
                    }
                }
                break;
            case 0x96: // ActionPush
                if ($action['Type'] == 0) { // Type String
                    if ($action['String'] === $from_str) {
                        $action['String'] = $to_str;
                    }
                }
                break;
 
            }
 
        }
        // don't touch $action, danger!
    }
}