<?php

/**
 * [UCenter] (C)2001-2099 Discuz! Team
 * This is NOT a freeware, use is subject to license terms
 * https://license.discuz.vip
 */

class uccode {
	var $uccodes;

	function __construct() {
		$this->uccode();
	}

	function uccode() {
		$this->uccode = [
			'pcodecount' => -1,
			'codecount' => 0,
			'codehtml' => []
		];
	}

	function codedisp($code) {
		$this->uccode['pcodecount']++;
		$code = str_replace('\\"', '"', preg_replace("/^[\n\r]*(.+?)[\n\r]*$/is", "\\1", $code));
		$this->uccode['codehtml'][$this->uccode['pcodecount']] = $this->tpl_codedisp($code);
		$this->uccode['codecount']++;
		return "[\tUCENTER_CODE_".$this->uccode['pcodecount']."\t]";
	}

	function complie($message) {
		$message = dhtmlspecialchars($message);
		if(str_contains($message, '[/code]')) {
			$message = preg_replace_callback('/\s*\[code\](.+?)\[\/code\]\s*/is', [$this, 'complie_callback_codedisp_1'], $message);
		}
		if(str_contains($message, '[/url]')) {
			$message = preg_replace_callback("/\[url(=((https?|ftp|gopher|news|telnet|rtsp|mms|callto|bctp|ed2k|thunder|synacast){1}:\/\/|www\.)([^\[\"']+?))?\](.+?)\[\/url\]/is", [$this, 'complie_callback_parseurl_15'], $message);
		}
		if(str_contains($message, '[/email]')) {
			$message = preg_replace_callback('/\[email(=([A-Za-z0-9\-_.+]+)@([A-Za-z0-9\-_]+[.][A-Za-z0-9\-_.]+))?\](.+?)\[\/email\]/is', [$this, 'complie_callback_parseemail_14'], $message);
		}
		$message = str_replace([
			'[/color]', '[/size]', '[/font]', '[/align]', '[b]', '[/b]',
			'[i]', '[/i]', '[u]', '[/u]', '[list]', '[list=1]', '[list=a]',
			'[list=A]', '[*]', '[/list]', '[indent]', '[/indent]', '[/float]'
		], [
			'</font>', '</font>', '</font>', '</p>', '<strong>', '</strong>', '<i>',
			'</i>', '<u>', '</u>', '<ul>', '<ul type="1">', '<ul type="a">',
			'<ul type="A">', '<li>', '</ul>', '<blockquote>', '</blockquote>', '</span>'
		], preg_replace([
			'/\[color=([#\w]+?)\]/i',
			'/\[size=(\d+?)\]/i',
			'/\[size=(\d+(\.\d+)?(px|pt|in|cm|mm|pc|em|ex|%)+?)\]/i',
			'/\[font=([^\[\<]+?)\]/i',
			'/\[align=(left|center|right)\]/i',
			'/\[float=(left|right)\]/i'
		], [
			"<font color=\"\\1\">",
			"<font size=\"\\1\">",
			"<font style=\"font-size: \\1\">",
			"<font face=\"\\1 \">",
			"<p align=\"\\1\">",
			"<span style=\"float: \\1;\">"
		], $message));
		if(str_contains($message, '[/quote]')) {
			$message = preg_replace("/\s*\[quote\][\n\r]*(.+?)[\n\r]*\[\/quote\]\s*/is", $this->tpl_quote(), $message);
		}
		if(str_contains($message, '[/img]')) {
			$message = preg_replace_callback("/\[img\]\s*([^\[\<\r\n]+?)\s*\[\/img\]/is", [$this, 'complie_callback_bbcodeurl_1'], $message);
			$message = preg_replace_callback("/\[img=(\d{1,4})[x|\,](\d{1,4})\]\s*([^\[\<\r\n]+?)\s*\[\/img\]/is", [$this, 'complie_callback_bbcodeurl_312'], $message);
		}
		for($i = 0; $i <= $this->uccode['pcodecount']; $i++) {
			$message = str_replace("[\tUCENTER_CODE_$i\t]", $this->uccode['codehtml'][$i], $message);
		}
		return nl2br(str_replace(["\t", '   ', '  '], ['&nbsp; &nbsp; &nbsp; &nbsp; ', '&nbsp; &nbsp;', '&nbsp;&nbsp;'], $message));
	}

	function complie_callback_codedisp_1($matches) {
		return $this->codedisp($matches[1]);
	}

	function complie_callback_parseurl_15($matches) {
		return $this->parseurl($matches[1], $matches[5]);
	}

	function complie_callback_parseemail_14($matches) {
		return $this->parseemail($matches[1], $matches[4]);
	}

	function complie_callback_bbcodeurl_1($matches) {
		return $this->bbcodeurl($matches[1], '<img src="%s" border="0" alt="" />');
	}

	function complie_callback_bbcodeurl_312($matches) {
		return $this->bbcodeurl($matches[3], '<img width="'.$matches[1].'" height="'.$matches[2].'" src="%s" border="0" alt="" />');
	}

	function parseurl($url, $text) {
		if(!$url && preg_match("/((https?|ftp|gopher|news|telnet|rtsp|mms|callto|bctp|ed2k|thunder|synacast){1}:\/\/|www\.)[^\[\"']+/i", trim($text), $matches)) {
			$url = $matches[0];
			$length = 65;
			if(strlen($url) > $length) {
				$text = substr($url, 0, intval($length * 0.5)).' ... '.substr($url, -intval($length * 0.3));
			}
			return '<a href="'.(str_starts_with(strtolower($url), 'www.') ? 'http://'.$url : $url).'" target="_blank">'.$text.'</a>';
		} else {
			$url = substr($url, 1);
			if(str_starts_with(strtolower($url), 'www.')) {
				$url = 'http://'.$url;
			}
			return '<a href="'.$url.'" target="_blank">'.$text.'</a>';
		}
	}

	function parseemail($email, $text) {
		$text = str_replace('\"', '"', $text);
		if(!$email && preg_match('/\s*([A-Za-z0-9\-_.+]+)@([A-Za-z0-9\-_]+[.][A-Za-z0-9\-_.]+)\s*/i', $text, $matches)) {
			$email = trim($matches[0]);
			return '<a href="mailto:'.$email.'">'.$email.'</a>';
		} else {
			return '<a href="mailto:'.substr($email, 1).'">'.$text.'</a>';
		}
	}

	function bbcodeurl($url, $tags) {
		if(!preg_match('/<.+?>/s', $url)) {
			if(!in_array(strtolower(substr($url, 0, 6)), ['http:/', 'https:', 'ftp://', 'rtsp:/', 'mms://'])) {
				$url = 'http://'.$url;
			}
			return str_replace(['submit', 'logging.php'], ['', ''], sprintf($tags, $url, addslashes($url)));
		} else {
			return '&nbsp;'.$url;
		}
	}

	function tpl_codedisp($code) {
		return '<div class="blockcode"><code id="code'.$this->uccodes['codecount'].'">'.$code.'</code></div>';
	}

	function tpl_quote() {
		return '<div class="quote"><blockquote>\\1</blockquote></div>';
	}
}


