sliceconverter.php

<?
namespace Bitrix\Fileman\Block\Content;
 
use Bitrix\Main\Localization\Loc;
use Bitrix\Fileman\Block;
 
Loc::loadMessages(__FILE__);
 
class SliceConverter implements IConverter
{
    CONST SLICE_SECTION_ID = 'BX_BLOCK_EDITOR_EDITABLE_SECTION';
 
    public static function isValid($string)
    {
        $result = true;
        $string = mb_strtoupper($string);
        if(mb_strpos($string, '<!--START '.static::SLICE_SECTION_ID.'/') === false)
        {
            $result = false;
        }
        if(mb_strpos($string, '<!--END '.static::SLICE_SECTION_ID.'/') === false)
        {
            $result = false;
        }
 
        return $result;
    }
 
    public static function toArray($string)
    {
        $blockContent = new BlockContent();
        $pattern = '#<!--START '
            . static::SLICE_SECTION_ID . '/([\w]+?)/([\w]+?)/-->'
            . '([\s\S,\n]*?)'
            . '<!--END ' . static::SLICE_SECTION_ID . '[/\w]+?-->#';
 
        $matches = array();
        if(preg_match_all($pattern, $string, $matches))
        {
            $matchesCount = count($matches[0]);
            for($i = 0; $i < $matchesCount; $i++)
            {
                $section = trim($matches[1][$i]);
                $place = trim($matches[2][$i]);
                $value = trim($matches[3][$i]);
 
                $blockContent->add($section, $place, $value);
            }
        }
 
        return $blockContent;
    }
 
    public static function toString(BlockContent $content)
    {
        $result = '';
        foreach ($content->getList() as $item)
        {
            $result .= '<!--START '
                . static::SLICE_SECTION_ID . "/{$item['type']}/{$item['place']}/-->\n"
                . $item['value'] . "\n"
                . '<!--END '
                . static::SLICE_SECTION_ID . "/{$item['type']}/{$item['place']}/-->\n";
        }
 
        return trim($result);
    }
 
    public static function sanitize($string)
    {
        if (!self::isValid($string))
        {
            return Block\Sanitizer::clean($string);
        }
 
        $content = self::toArray($string);
        $list = $content->getList();
        foreach ($list as $index => $item)
        {
            if ($item['type'] !== BlockContent::TYPE_BLOCKS)
            {
                continue;
            }
 
            $item['value'] = Block\Sanitizer::clean($item['value']);
            $list[$index] = $item;
        }
 
        $content->setList($list);
        return self::toString($content);
    }
}