functions.php

См. документацию.

<?php
##############################################
# Bitrix Site Manager Forum                  #
# Copyright (c) 2002-2007 Bitrix             #
# https://www.bitrixsoft.com                 #
# mailto:admin@bitrixsoft.com                #
##############################################
IncludeModuleLangFile(__FILE__);
function Error($error)
{
    global $MESS;
    require_once($_SERVER["DOCUMENT_ROOT"]."/bitrix/modules/forum/lang/".LANGUAGE_ID."/errors.php");
    $msg = $MESS[$error["MSG"]];
    echo "Error: ".$msg;
}
 
class forumTextParser extends CTextParser
{
    /* @deprecated */ var $image_params = array();
    /* @deprecated */ var $pathToUser = "";
    public $imageWidth = 300;
    public $imageHeight = 300;
    public $maxStringLen = 60;
    public $imageHtmlWidth = 0;
    public $imageHtmlHeight = 0;
    public $imageTemplate = "popup_image";
    public $component = null;
    public $smilesGallery = 0;
    public $arFilesIDParsed = array();
    public $MaxStringLen = null;
 
    function __construct($lang = false, $pathToSmiles = '', $type=false, $mode = 'full')
    {
        parent::__construct();
        $this->arFiles = array();
        $this->arFilesParsed = array();
 
        $this->arUserfields = array();
        $this->ajaxPage = $GLOBALS["APPLICATION"]->GetCurPageParam("", array("bxajaxid", "logout"));
        $this->userPath = "";
        $this->userNameTemplate = str_replace(array("#NOBR#","#/NOBR#"), "", CSite::GetDefaultNameFormat());
        $this->smilesGallery = \COption::GetOptionInt("forum", "smile_gallery_id", 0);
 
        if ($mode == 'full')
        {
            AddEventHandler("main", "TextParserAfterTags", Array(&$this, "ParserFile"));
        }
    }
 
    public static function GetFeatures($arForum)
    {
        static $arFeatures = [
            "HTML", "ANCHOR", "BIU", "IMG",
            "VIDEO", "LIST", "QUOTE", "CODE",
            "FONT", "UPLOAD", "NL2BR", "SMILES",
            "TABLE", "ALIGN"];
        $result = array();
        if (is_array($arForum))
        {
            foreach ($arFeatures as $feature)
            {
                $result[$feature] = ((isset($arForum['ALLOW_'.$feature]) && $arForum['ALLOW_'.$feature] == 'Y') ? 'Y' : 'N');
            }
        }
        return $result;
    }
 
    public static function GetEditorButtons($arParams)
    {
        $result = array();
        $arEditorFeatures = array(
            "ALLOW_QUOTE" => array('Quote'),
            'ALLOW_ANCHOR' => array('CreateLink'),
            "ALLOW_VIDEO" => array('InputVideo'),
            "ALLOW_UPLOAD" => array('UploadFile'),
            "ALLOW_MENTION" => array('MentionUser')
        );
        if (isset($arParams['forum']) && is_array($arParams['forum']))
        {
            $res = array_intersect_key($arParams['forum'], $arEditorFeatures);
            foreach ($res as $featureName => $val)
            {
                if ($val != 'N')
                    $result = array_merge($result, $arEditorFeatures[$featureName]);
            }
        }
        return $result;
    }
 
    public static function GetEditorToolbar($arParams)
    {
        static $arEditorFeatures = array(
            "ALLOW_BIU" => array('Bold', 'Italic', 'Underline', 'Strike', 'Spoiler'),
            "ALLOW_FONT" => array('ForeColor','FontList', 'FontSizeList'),
            "ALLOW_QUOTE" => array('Quote'),
            "ALLOW_CODE" => array('Code'),
            'ALLOW_ANCHOR' => array('CreateLink', 'DeleteLink'),
            "ALLOW_IMG" => array('Image'),
            "ALLOW_VIDEO" => array('InputVideo'),
            "ALLOW_TABLE" => array('Table'),
            "ALLOW_ALIGN" => array('Justify'),
            "ALLOW_LIST" => array('InsertOrderedList', 'InsertUnorderedList'),
            "ALLOW_SMILES" => array('SmileList'),
            //"ALLOW_UPLOAD" => array('UploadFile'),
            //"ALLOW_NL2BR" => array(''),
        );
        $result = array();
 
        if (isset($arParams['mode']) && ($arParams['mode'] == 'full'))
        {
            foreach ($arEditorFeatures as $featureName => $toolbarIcons)
            {
                $result = array_merge($result, $toolbarIcons);
            }
        }
        elseif (isset($arParams['forum']))
        {
            foreach ($arEditorFeatures as $featureName => $toolbarIcons)
            {
                if (isset($arParams['forum'][$featureName]) && ($arParams['forum'][$featureName] == 'Y'))
                    $result = array_merge($result, $toolbarIcons);
            }
        }
 
        $result = array_merge($result, array('MentionUser', 'UploadFile', 'RemoveFormat', 'Source'));
        if (LANGUAGE_ID == 'ru')
            $result[] = 'Translit';
 
        return $result;
    }
 
    function convert($text, $allow = array(), $type = "html", $arFiles = false, $attributes = [])
    {
        $text = str_replace(array("\013", "\014"), "", $text);
 
        $this->imageWidth = (isset($this->image_params["width"]) && $this->image_params["width"] > 0 ? $this->image_params["width"] : ($this->imageWidth > 0 ? $this->imageWidth : 300));
        $this->imageHeight = (isset($this->image_params["height"]) && $this->image_params["height"] > 0 ? $this->image_params["height"] : ($this->imageHeight > 0 ? $this->imageHeight : 300));
 
        $this->userPath = str_replace(array("#UID#", "#uid#"), "#user_id#", (empty($this->userPath) && !empty($this->pathToUser) ? $this->pathToUser : $this->userPath));
 
        $this->type = $type;
 
        $allow = (is_array($allow) ? $allow : array());
        if (!empty($this->arUserfields))
            $allow["USERFIELDS"] = $this->arUserfields;
 
        if (sizeof($allow)>0)
        {
            if (!isset($allow['TABLE']))
                $allow['TABLE']=$allow['BIU'];
 
            $this->allow = array_merge((is_array($this->allow) ? $this->allow : array()), $allow);
        }
        $this->parser_nofollow = COption::GetOptionString("forum", "parser_nofollow", "Y");
        $this->link_target = COption::GetOptionString("forum", "parser_link_target", "_blank");
 
        if ($arFiles !== false)
            $this->arFiles = is_array($arFiles) ? $arFiles : array($arFiles);
        $this->arFilesIDParsed = array();
 
        $text = str_replace(array("\013", "\014"), array(chr(34), chr(39)), $this->convertText($text, $attributes));
        return $text;
    }
 
    function convert4mail($text, $files = false, $allow = array(), $params = array())
    {
        $this->arFiles = (is_array($files) ? $files : ($files ? array($files) : array()));
        $this->arFilesIDParsed = array();
 
        if (!empty($params))
        {
            $mail = array(
                "RECIPIENT_ID" => intval($params["RECIPIENT_ID"]),
                "SITE_ID" => ($params["SITE_ID"] ?: SITE_ID)
            );
            $allow = array_merge(((is_array($allow) ? $allow : array()) + array(
                "HTML" => "N",
                "ANCHOR" => "Y",
                "BIU" => "Y",
                "IMG" => "Y",
                "QUOTE" => "Y",
                "CODE" => "Y",
                "FONT" => "Y",
                "LIST" => "Y",
                "NL2BR" => "N",
                "TABLE" => "Y"
            )), array("SMILES" => "N"));
 
            $this->RECIPIENT_ID = $mail["RECIPIENT_ID"];
            $this->SITE_ID = $mail["SITE_ID"];
 
            if (is_array($this->arUserfields))
            {
                foreach ($this->arUserfields as &$f)
                {
                    $f += $mail;
                }
            }
            return $this->convert($text, $allow, "mail");
        }
        else
        {
            $text = parent::convert4mail($text);
            if (!empty($this->arFiles))
                $this->ParserFile($text, $this, "mail");
            if (preg_match("/\\[cut(([^\\]])*)\\]/isu", $text, $matches))
            {
                $text = preg_replace(
                    array("/\\[cut(([^\\]])*)\\]/isu",
                        "/\\[\\/cut\\]/isu"),
                    array("\001\\1\002",
                        "\003"),
                    $text);
                while (preg_match("/(\001([^\002]*)\002([^\001\002\003]+)\003)/isu", $text, $arMatches))
                    $text = preg_replace(
                        "/(\001([^\002]*)\002([^\001\002\003]+)\003)/isu",
                        "\n>================== CUT ===================\n\\3\n>==========================================\n",
                        $text);
                $text = preg_replace(
                    array("/\001([^\002]+)\002/",
                        "/\001\002/",
                        "/\003/"),
                    array("[cut\\1]",
                        "[cut]",
                        "[/cut]"),
                    $text);
            }
        }
        return $text;
    }
 
    function ParserFile(&$text, &$obj, $type="html")
    {
        if (method_exists($obj, "convert_attachment"))
        {
            $tmpType = $obj->type;
            $obj->type = $type;
            $text = preg_replace_callback("/\[file([^\]]*)id\s*=\s*([0-9]+)([^\]]*)\]/isu", array($this, "convert_attachment"), $text);
            $obj->type = $tmpType;
        }
    }
 
    function convert_open_tag($marker = "quote")
    {
        $marker = (mb_strtolower($marker) == "code" ? "code" : "quote");
 
        $this->{$marker."_open"}++;
        if ($this->type == "rss")
            return "\n====".$marker."====\n";
        else if ($this->type == "mail")
            return ($marker == "code" ? "<code>" : "<blockquote>");
        else if ($this->bMobile)
            return "<div class='blog-post-".$marker."' title=\"".($marker == "quote" ? GetMessage("FRM_QUOTE") : GetMessage("FRM_CODE"))."\"><table class='blog".$marker."'><tr><td>";
        else
            return '<div class="entry-'.$marker.'"><table class="forum-'.$marker.'"><thead><tr><th>'.($marker == "quote" ? GetMessage("FRM_QUOTE") : GetMessage("FRM_CODE")).'</th></tr></thead><tbody><tr><td>';
    }
 
    function convert_close_tag($marker = "quote")
    {
        $marker = (mb_strtolower($marker) == "code" ? "code" : "quote");
 
        if ($this->{$marker."_open"} == 0)
        {
            $this->{$marker."_error"}++;
            return "";
        }
        $this->{$marker."_closed"}++;
 
        if ($this->type == "rss")
            return "\n=============\n";
        else if ($this->type == "mail")
            return ($marker == "code" ? "</code>" : "</blockquote>");
        else if ($this->bMobile)
            return "</td></tr></table></div>";
        else
            return "</td></tr></tbody></table></div>";
 
    }
 
    function convert_image_tag($url = "", $params="")
    {
        $url = trim($url);
        if (empty($url)) return "";
        $type = (mb_strtolower($this->type) == "rss" ? "rss" : "html");
 
        $bErrorIMG = !preg_match("/^(http|https|ftp|\/)/iu", $url);
 
        $url = str_replace(array("<", ">", "\""), array("%3C", "%3E", "%22"), $url);
        // to secure from XSS [img]http://ya.ru/[url]http://onmouseover=prompt(/XSS/)//[/url].jpg[/img]
 
        if ($bErrorIMG)
            return "[img]".$url."[/img]";
 
        if ($type != "html")
            return '<img src="'.$url.'" alt="'.GetMessage("FRM_IMAGE_ALT").'" border="0" />';
 
        $width = 0; $height = 0;
        if (preg_match_all("/width\=(?P<width>\d+)|height\=(?P<height>\d+)/isu", $params, $matches)):
            $width = intval(!empty($matches["width"][0]) ? $matches["width"][0] : $matches["width"][1]);
            $height = intval(!empty($matches["height"][0]) ? $matches["height"][0] : $matches["height"][1]);
        endif;
        $result = $GLOBALS["APPLICATION"]->IncludeComponent(
            "bitrix:forum.interface",
            $this->imageTemplate,
            Array(
                "URL" => $url,
                "SIZE" => array("width" => $width, "height" => $height),
                "MAX_SIZE" => array("width" => $this->imageWidth, "height" => $this->imageHeight),
                "HTML_SIZE"=> array("width" => $this->imageHtmlWidth, "height" => $this->imageHtmlHeight),
                "CONVERT" => "N",
                "FAMILY" => "FORUM",
                "RETURN" => "Y"
            ),
            $this->component,
            array("HIDE_ICONS" => "Y"));
        return $this->defended_tags($result, 'replace');
    }
 
    function convert_attachment($fileID = "", $p = "", $type = "", $text = "")
    {
        if (is_array($fileID))
        {
            $text = $fileID[0];
            $p = $fileID[3];
            $fileID = $fileID[2];
        }
 
        $fileID = intval($fileID);
        $type = mb_strtolower(empty($type)? $this->type : $type);
        $type = (in_array($type, array("html", "mail", "bbcode", "rss")) ? $type : "html");
 
        $this->arFiles = (is_array($this->arFiles) ? $this->arFiles : array($this->arFiles));
        if ($fileID <= 0 || (!array_key_exists($fileID, $this->arFiles) && !in_array($fileID, $this->arFiles)))
            return $text;
 
        if (!array_key_exists($fileID, $this->arFiles) && in_array($fileID, $this->arFiles)): // array(fileID10, fileID12, fileID14)
            unset($this->arFiles[array_search($fileID, $this->arFiles)]);
            $this->arFiles[$fileID] = $fileID; // array(fileID10 => fileID10, fileID12 => fileID12, fileID14 => fileID14)
        endif;
 
        if (!is_array($this->arFiles[$fileID]))
            $this->arFiles[$fileID] = CFile::GetFileArray($fileID); // array(fileID10 => array about file, ....)
 
        if (!is_array($this->arFiles[$fileID])): // if file does not exist
            unset($this->arFiles[$fileID]);
            return $text;
        endif;
 
        if (!array_key_exists($fileID, $this->arFilesParsed) || empty($this->arFilesParsed[$fileID][$type]))
        {
            $arFile = $this->arFiles[$fileID];
            if ($type == "html" || $type == "rss")
            {
                $width = 0; $height = 0;
                if (preg_match_all("/width\=(?P<width>\d+)|height\=(?P<height>\d+)/isu", $p, $matches)):
                    $width = intval(!empty($matches["width"][0]) ? $matches["width"][0] : $matches["width"][1]);
                    $height = intval(!empty($matches["height"][0]) ? $matches["height"][0] : $matches["height"][1]);
                endif;
                $arFile[$type] = $GLOBALS["APPLICATION"]->IncludeComponent(
                        "bitrix:forum.interface",
                        "show_file",
                        Array(
                            "FILE" => $arFile,
                            "SHOW_MODE" => ($type == "html" ? "THUMB" : "RSS"),
                            "SIZE" => array("width" => $width, "height" => $height),
                            "MAX_SIZE" => array("width" => $this->imageWidth, "height" => $this->imageHeight),
                            "HTML_SIZE"=> array("width" => $this->imageHtmlWidth, "height" => $this->imageHtmlHeight),
                            "CONVERT" => "N",
                            "NAME_TEMPLATE" => $this->userNameTemplate,
                            "FAMILY" => "FORUM",
                            "SINGLE" => "Y",
                            "RETURN" => "Y"),
                        $this->component,
                        array("HIDE_ICONS" => "Y"));
            }
            else
            {
                $path = '/bitrix/components/bitrix/forum.interface/show_file.php?fid='.$arFile["ID"];
                $bIsImage = (CFile::CheckImageFile(CFile::MakeFileArray($fileID)) === null);
//              $path = ($bIsImage && !empty($arFile["SRC"]) ? $arFile["SRC"] : !$bIsImage && !empty($arFile["URL"]) ? $arFile["URL"] : $path);
                $path = preg_replace("'(?<!:)/+'s", "/", (mb_substr($path, 0, 1) == "/" ? CHTTP::URN2URI($path, $this->serverName) : $path));
                switch ($type)
                {
                    case "bbcode":
                            $arFile["bbcode"] = ($bIsImage ? '[IMG]'.$path.'[/IMG]' : '[URL='.$path.']'.$arFile["ORIGINAL_NAME"].'[/URL]');
                        break;
                    case "mail":
                            $arFile["mail"] = $arFile["ORIGINAL_NAME"].($bIsImage ? " (IMAGE: ".$path.")" : " (URL: ".$path.")");
                        break;
                }
            }
            $this->arFilesParsed[$fileID] = $arFile;
        }
        $this->arFilesIDParsed[] = $fileID;
        return $this->arFilesParsed[$fileID][$type];
    }
 
    function convert_to_rss(
        $text,
        $arImages = Array(),
        $arAllow = Array())
    {
        if (empty($arAllow))
            $arAllow = array(
                "HTML" => "N",
                "ANCHOR" => "Y",
                "BIU" => "Y",
                "IMG" => "Y",
                "QUOTE" => "Y",
                "CODE" => "Y",
                "FONT" => "Y",
                "LIST" => "Y",
                "SMILES" => "Y",
                "NL2BR" => "N",
                "TABLE" => "Y"
            );
        $text = preg_replace(
            array(
                "#^(.+?)<cut[\s]*(/>|>).*?$#isu",
                "#^(.+?)\[cut[\s]*(/\]|\]).*?$#isu"),
            "\\1", $text);
 
        return $this->convert($text, $arAllow, "rss", $arImages);
    }
 
    function render_user($fields)
    {
        $classAdditional = (!empty($fields['CLASS_ADDITIONAL']) ? $fields['CLASS_ADDITIONAL'] : '');
        $pathToUser = (!empty($fields['PATH_TO_USER']) ? $fields['PATH_TO_USER'] : '');
        $userId = (!empty($fields['USER_ID']) ? $fields['USER_ID'] : '');
        $userName = (!empty($fields['USER_NAME']) ? $fields['USER_NAME'] : '');
 
        if (empty($userId))
        {
            return "<span class=\"blog-p-user-name\">{$userName}</span>";
        }
 
        $anchorId = RandString(8);
 
        return '<a class="blog-p-user-name'.$classAdditional.'" id="bp_'.$anchorId.'" href="'.CComponentEngine::MakePathFromTemplate($pathToUser, array("user_id" => $userId)).'" bx-tooltip-user-id="'.(!$this->bMobile ? $userId : '').'">'.$userName.'</a>';
    }
}
 
/***
 * @deprecated
 */
class textParser extends forumTextParser {
    public function killAllTags($text)
    {
        return parent::clearAllTags($text);
    }
}
 
class CForumSimpleHTMLParser
{
    private $data;
    private $parse_search_needle = '/([^\[]*)(?:\[(.*)\])*/iu';
    private $parse_tag = "/<(?<closing>\/?)(?<tag>[a-z]+)(?<params>.*?)(?<selfclosing>\/?)>/ismu";
    private $parse_params = '/([a-z\-]+)\s*=\s*(?:([^\s]*)|(?:[\'"]([^\'"])[\'"]))/imu';
    private $lastError = '';
    private $preg = array(
            "counter" => 0,
            "pattern" => array(),
            "replace" => array()
        );
 
    function __construct ($data)
    {
        $this->data = $this->prepare($data);
    }

    private function prepare(string $text): string
    {
        $text = preg_replace_callback(
            "/<pre>(.+?)<\\/pre>/isu",
            [$this, "defendTags"],
            $text
        );
        $text = str_replace(["\r\n", "\n", "\t"], "", $text);
        $text = str_replace($this->preg["pattern"], $this->preg["replace"], $text);
        $this->preg["pattern"] = array();
        $this->preg["replace"] = array();
        return $text;
    }

    public function defendTags($matches)
    {
        $text = "<\017#".(++$this->preg["counter"]).">";
        $this->preg["pattern"][] = $text;
        $this->preg["replace"][] = $matches[0];
        return $text;
    }
 
    function findTagStart($needle) // needle = input[name=input;class=red]
    {
        $offset = 0;
 
        $search = array();
        if (preg_match($this->parse_search_needle, $needle, $matches ) == 0)
            return '';
        if (sizeof($matches) > 1)
        {
            $search['TAG'] = trim($matches[1]);
        }
        if (sizeof($matches) > 2)
        {
            $arAttr = explode(';', $matches[2]);
            foreach($arAttr as $attr)
            {
                list($attr_name, $attr_value) = explode('=', $attr);
                $search[mb_strtoupper(trim($attr_name))] = trim($attr_value);
            }
        }
        $tmp = $this->data;
        // skip special tags
        while ($skip = $this->skipTags($tmp))
        {
            $offset += $skip;
            $tmp = mb_substr($tmp, $skip);
        }
        while ($tmp <> '' && preg_match($this->parse_tag, $tmp, $matches) > 0)
        {
            $tag_name = $matches['tag'];
            $localOffset = mb_strpos($tmp, $matches[0]) + mb_strlen($matches[0]);
 
            if (mb_strlen($matches['closing']) <= 0 && $tag_name == $search['TAG']) // tag has been found
            {
                // parse params
                $params = $matches['params'];
                if (preg_match_all($this->parse_params, $params, $arParams, PREG_SET_ORDER ) > 0)
                {
                    // store tag params
                    $arTagParams = array();
                    foreach($arParams as $arParam)
                        $arTagParams[mb_strtoupper(trim($arParam[1]))] = trim(trim($arParam[2]), '"\'');
                    // compare all search params
                    $found = true;
                    foreach($search as $key => $value)
                    {
                        if ($key == 'TAG') continue;
                        if (!( isset($arTagParams[$key]) && $arTagParams[$key] == $value))
                        {
                            $found = false;
                            break;
                        }
                    }
                    if ($found)
                    {
                        return $offset;
                    }
                }
            }
 
            $offset += $localOffset;
            $tmp = mb_substr($tmp, $localOffset);
 
            // skip special tags
            while ($skip = $this->skipTags($tmp))
            {
                $offset += $skip;
                $tmp = mb_substr($tmp, $skip);
            }
        }
        return false;
    }
 
    function skipTags($tmp)
    {
        static $tags_open = array('<!--', '<script');
        static $tags_close = array('-->', '</script>');
        static $n_tags = 2;
        static $tags_quoted;
 
        if (!is_array($tags_quoted))
        for ($i=0; $i<$n_tags;$i++)
                $tags_quoted[$i] = array('open' => preg_quote($tags_open[$i]), 'close' => preg_quote($tags_close[$i]));
 
        for ($i=0; $i<$n_tags;$i++)
        {
            if (preg_match('#^\s*'.$tags_quoted[$i]['open'].'#iu', $tmp) < 1) continue;
            if (preg_match('#('.$tags_quoted[$i]['close'].'[^<]*)#imu', $tmp, $matches) > 0)
            {
                $endpos = mb_strpos($tmp, $matches[1]);
                $offset = $endpos + mb_strlen($matches[1]);
                return $offset;
            }
        }
        return false;
    }
 
    function setError($msg)
    {
        $this->lastError = $msg;
        return false;
    }
 
    function findTagEnd($startIndex)
    {
        if ($startIndex === false || (intval($startIndex) == 0 && $startIndex !== 0))
            return $this->setError('E_PARSE_INVALID_INDEX');
        $tmp = mb_substr($this->data, $startIndex);
 
        $this->lastError = '';
        $arStack = [];
        $offset = 0;
        $closeMistmatch = 2;
        $tag_id = 0;
 
        while ($tmp <> '' && preg_match($this->parse_tag, $tmp, $matches) > 0)
        {
            $tag_id++;
            $tag_name = mb_strtoupper($matches['tag']);
            $localOffset = mb_strpos($tmp, $matches[0]) + mb_strlen($matches[0]);
 
            if ($matches['closing'] == '/') // close tag
            {
                if (end($arStack) == $tag_name)
                {
                    array_pop($arStack);
                }
                else // lost close tag somewhere
                {
                    $fixed = false;
                    for ($i=2;$i<=$closeMistmatch+1;$i++)
                    {
                        if (sizeof($arStack) > $i && $arStack[sizeof($arStack)-$i] == $tag_name)
                        {
                            $arStack = array_slice($arStack, 0, -$i);
                            $fixed = true;
                        }
                    }
                    if (!$fixed)
                    {
                        return $this->setError('E_PARSE_INVALID_DOM_2');
                    }
                }
            }
            else if ($matches['selfclosing'] == '/') // self close tag
            {
                // do nothing
            }
            else if ($tag_name == 'LI' && end($arStack) == 'LI') // oh
            {
                // do nothing
            }
            else // open tag
            {
                $arStack[] = $tag_name;
            }
            if (sizeof($arStack) > 300)
            {
                return $this->setError('E_PARSE_TOO_BIG_DOM_3');  // too big DOM
            }
            else if (sizeof($arStack) == 0) // done !
            {
                return $offset + $localOffset;
            }
            else // continue
            {
                $offset += $localOffset;
                $tmp = mb_substr($tmp, $localOffset);
            }
            // skip special tags
            while ($skip = $this->skipTags($tmp))
            {
                $offset += $skip;
                $tmp = mb_substr($tmp, $skip);
            }
        }
        return $this->setError('E_PARSE_INVALID_DOM_4');  // not enough data in $data ?
    }
 
    function getTagHTML($search)
    {
        $messagePost = '';
        $messageStart = $this->findTagStart($search);
        if ($messageStart === false) return '';
        $messageEnd = $this->findTagEnd($messageStart);
        if ($messageEnd !== false)
            $messagePost = mb_substr($this->data, $messageStart, $messageEnd);
        return trim($messagePost);
    }
 
    function getInnerHTML($startLabel, $endLabel, $multiple=false)
    {
        $startPos = mb_strpos($this->data, $startLabel);
        if ($startPos === false) return '';
        $startPos += mb_strlen($startLabel);
        $endPos = mb_strpos($this->data, $endLabel, $startPos);
        if ($endPos === false) return '';
        return trim(mb_substr($this->data, $startPos, $endPos - $startPos));
    }
}
 
class CForumCacheManager
{
    public function __construct()
    {
        if(defined("BX_COMP_MANAGED_CACHE"))
        {
            AddEventHandler("forum", "onAfterMessageDelete", array(&$this, "OnMessageDelete"));
            AddEventHandler("forum", "onAfterMessageUpdate", array(&$this, "OnMessageUpdate"));
            AddEventHandler("forum", "onAfterMessageAdd", array(&$this, "OnMessageAdd"));
 
            AddEventHandler("forum", "onAfterTopicAdd", array(&$this, "OnTopicAdd"));
            AddEventHandler("forum", "onAfterTopicUpdate", array(&$this, "OnTopicUpdate"));
            AddEventHandler("forum", "onTopicOpen", array(&$this, "OnTopicUpdate"));
            AddEventHandler("forum", "onTopicClose", array(&$this, "OnTopicUpdate"));
            AddEventHandler("forum", "onAfterTopicDelete", array(&$this, "OnTopicDelete"));
 
            //AddEventHandler("forum", "onAfterForumAdd", array(&$this, "OnForumAdd"));
            AddEventHandler("forum", "onAfterForumUpdate", array(&$this, "OnForumUpdate"));
            //AddEventHandler("forum", "OnAfterForumDelete", array(&$this, "OnForumDelete"));
 
            AddEventHandler("main", "OnAddRatingVote", Array(&$this, "OnRate"));
            AddEventHandler("main", "OnCancelRatingVote", Array(&$this, "OnRate"));
        }
    }
 
    public static function Compress($arDictCollection)
    {
        if (
            is_array($arDictCollection) &&
            (sizeof($arDictCollection) > 9)
        )
        {
            reset($arDictCollection);
            $arFirst = current($arDictCollection);
            $arKeys = array_keys($arFirst);
            $i = 0;
 
            foreach($arDictCollection as &$arDictionary)
            {
                if ($i++ === 0)
                    continue;
 
                foreach($arKeys as $k)
                {
                    if (isset($arDictionary[$k]) && ($arDictionary[$k] === $arFirst[$k]))
                        unset($arDictionary[$k]);
                }
            }
        }
        return $arDictCollection;
    }
 
    public static function Expand($arDictCollection)
    {
        if (
            is_array($arDictCollection) &&
            (sizeof($arDictCollection) > 9) &&
            is_array($arDictCollection[0])
        )
        {
 
            $arFirst =& $arDictCollection[0];
            $arKeys = array_keys($arFirst);
            $i = 0;
 
            foreach($arDictCollection as &$arDictionary)
            {
                if ($i++ === 0)
                    continue;
 
                foreach($arKeys as $k)
                {
                    if (!isset($arDictionary[$k]))
                    {
                        $arDictionary[$k] = $arFirst[$k];
                    }
                }
            }
        }
        return $arDictCollection;
    }
 
    public static function SetTag($path, $tags)
    {
        global $CACHE_MANAGER;
        if (! defined("BX_COMP_MANAGED_CACHE"))
            return false;
        $CACHE_MANAGER->StartTagCache($path);
        if (is_array($tags))
        {
            foreach ($tags as $tag)
                $CACHE_MANAGER->RegisterTag($tag);
        }
        else
        {
            $CACHE_MANAGER->RegisterTag($tags);
        }
        $CACHE_MANAGER->EndTagCache();
        return true;
    }
 
    public static function ClearTag($type, $ID=0)
    {
        global $CACHE_MANAGER;
        static $forum = "forum_";
        static $topic = "forum_topic_";
 
        if ($type === "F" && $ID > 0)
        {
            $CACHE_MANAGER->ClearByTag($forum.$ID);
        }
        elseif ($type === "T" && $ID > 0)
        {
            $CACHE_MANAGER->ClearByTag($topic.$ID);
        }
        else if ($type !== "F" && $type !== "T")
        {
            $CACHE_MANAGER->ClearByTag($type);
        }
    }
 
    public function OnRate($rateID, $arData)
    {
        if (!isset($arData['ENTITY_TYPE_ID']) ||
            !isset($arData['ENTITY_ID']) ||
            ($arData['ENTITY_TYPE_ID'] !== 'FORUM_POST' && $arData['ENTITY_TYPE_ID'] !== 'FORUM_TOPIC'))
                return false;
 
        if ($arData['ENTITY_TYPE_ID'] === 'FORUM_POST')
        {
            $arMessage = CForumMessage::GetByID($arData['ENTITY_ID']);
            if ($arMessage)
                $this->ClearTag("T", $arMessage['TOPIC_ID']);
        }
        else if ($arData['ENTITY_TYPE_ID'] === 'FORUM_TOPIC')
        {
            $arTopic = CForumTopic::GetByID($arData['ENTITY_ID']);
            if ($arTopic)
                $this->ClearTag("F", $arTopic['FORUM_ID']);
            $this->ClearTag("T", $arData['ENTITY_ID']);
        }
        return true;
    }
 
    public function OnMessageAdd($ID, $arFields)
    {
        self::ClearTag("T", isset($arFields["FORUM_TOPIC_ID"]) ? $arFields["FORUM_TOPIC_ID"] : $arFields["TOPIC_ID"]);
        self::ClearTag("forum_msg_count".$arFields["FORUM_ID"]);
    }
 
    public function OnMessageUpdate($ID, $arFields, $arMessage = array())
    {
        $arMessage = (is_array($arMessage) ? $arMessage : array());
        if ($topic_id = $arFields["FORUM_TOPIC_ID"] ?? $arFields["TOPIC_ID"] ?? $arMessage["TOPIC_ID"] ?? 0)
        {
            $this->ClearTag("T", $topic_id);
        }
        if ($forum_id = $arFields["FORUM_ID"] ?? $arMessage["FORUM_ID"] ?? 0)
        {
            $this->ClearTag("forum_msg_count" . $forum_id);
        }
    }
 
    public function OnMessageDelete($ID, $arMessage)
    {
        self::ClearTag("T", isset($arMessage["FORUM_TOPIC_ID"]) ? $arMessage["FORUM_TOPIC_ID"] : $arMessage["TOPIC_ID"]);
        self::ClearTag("forum_msg_count".$arMessage["FORUM_ID"]);
    }
 
    public function OnTopicAdd($ID, $arFields)
    {
        self::ClearTag("F", $arFields["FORUM_ID"]);
    }
 
    public function OnTopicUpdate($ID, $arFields)
    {
        if (count($arFields) == 1 && array_key_exists("VIEWS", $arFields))
        {
            return;
        }
        self::ClearTag("T", $ID);
        self::ClearTag("F", $arFields["FORUM_ID"] ?? 0);
    }
 
    public function OnTopicDelete(&$ID, $arTopic)
    {
        self::ClearTag("T", $ID);
        self::ClearTag("F", $arTopic["FORUM_ID"]);
    }
 
    //public function OnForumAdd(&$ID, &$arFields)
    //{
    //}
 
    public function OnForumUpdate($ID, $arFields)
    {
        self::ClearTag("F", $arFields["FORUM_ID"] ?? null);
    }
 
    //public function OnForumDelete($ID)
    //{
    //}
}
 
class CForumAutosave
{
    private static $instance;
    private $as;
 
    public function __construct()
    {
        echo CJSCore::Init(array('autosave'), true);
        $this->as = new CAutoSave();
    }
 
    public static function GetInstance()
    {
        if (!$GLOBALS['USER']->IsAuthorized())
            return false;
        if (COption::GetOptionString("forum", "USE_AUTOSAVE", "Y") === "N")
            return false;
 
        if (!isset(self::$instance))
        {
            $c = __CLASS__;
            self::$instance = new $c;
        }
 
        return self::$instance;
    }
 
    public function LoadScript($arParams)
    {
        if (!is_array($arParams))
            $arParams = array("formID" => $arParams);
        if (!isset($arParams['recoverMessage']))
            $arParams['recoverMessage'] = GetMessage('F_MESSAGE_RECOVER');
 
        $jsParams = CUtil::PhpToJSObject($arParams);
        $id = $this->as->GetID();
        ob_start();
?>
        <script>
        window.autosave_<?=$id?>_func = function() { ForumFormAutosave(<?=$jsParams?>); window.autosave_<?=$id?>.Prepare(); };
        if (!!window["ForumFormAutosave"])
            window.autosave_<?=$id?>_func();
        else
        {
            BX.addCustomEvent(window, 'onScriptForumAutosaveLoaded', window.autosave_<?=$id?>_func);
            BX.loadScript("<?=CUtil::GetAdditionalFileURL("/bitrix/js/forum/autosave.js")?>");
        }
        </script>
<?
        ob_end_flush();
    }
 
    public function Init()
    {
        return $this->as->Init(false);
    }
 
    public function Reset()
    {
        return $this->as->Reset();
    }
}
?>