bbcode.js

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/******************************************************************************
  Crossday Discuz! Board - HTML <=> BB Code for Discuz!
  Copyright 2001-2006 Comsenz Inc. (http://www.comsenz.com)
*******************************************************************************/

var re;
var pcodecount = '-1';
var codecount = 0;
var codehtml = new Array();

function addslashes(str) {
	var searcharray = ['\\\\', '\\\'', '\\\/', '\\\(', '\\\)', '\\\[', '\\\]', '\\\{', '\\\}', '\\\^', '\\\$', '\\\?', '\\\.', '\\\*', '\\\+', '\\\|'];
	var replacearray = ['\\\\', '\\\'', '\\/', '\\(', '\\)', '\\[', '\\]', '\\{', '\\}', '\\^', '\\$', '\\?', '\\.', '\\*', '\\+', '\\|'];
	var len = searcharray.length;

	for(var i = 0; i < len; i++) {
		re = new RegExp(searcharray[i], "g");
		str = str.replace(re, replacearray[i]);
	}

	return str;
}

function atag(aoptions, text) {
	if(trim(text) == '') {
		return '';
	}

	href = getoptionvalue('href', aoptions);

	if(href.substr(0, 11) == 'javascript:') {
		return trim(recursion('a', text, 'atag'));
	} else if(href.substr(0, 7) == 'mailto:') {
		tag = 'email';
		href = href.substr(7);
	} else {
		tag = 'url';
	}

	return '[' + tag + '=' + href + ']' + trim(recursion('a', text, 'atag')) + '[/' + tag + ']';
}

function bbcode2html(str) {

	str = trim(str);

	if(str == '') {
		return '';
	}

	if(!fetchCheckbox('bbcodeoff') && allowbbcode) {
		str= str.replace(/\s*\[code\]([\s\S]+?)\[\/code\]\s*/ig, function($1, $2) {return parsecode($2);});
	}

	if(!forumallowhtml && !(allowhtml && fetchCheckbox('htmlon'))) {
		str = str.replace(/</ig, '&lt;');
		str = str.replace(/>/ig, '&gt;');
	}

	if(!fetchCheckbox('smileyoff') && allowsmilies) {
		for(id in smilies) {
			re = new RegExp(addslashes(smilies[id]['code']), "g");
			str = str.replace(re, '<img src="./images/smilies/' + smilies[id]['url'] + '" border="0" smilieid="' + id + '" alt="' + smilies[id]['code'] + '" />');
		}

	}

	if(!fetchCheckbox('parseurloff')) {
		str = str.replace(/^((http|https|ftp|rtsp|mms):\/\/[A-Za-z0-9\.\/=\?%\-&_~`@':+!]+)/ig, '<a href="$1" target="_blank">$1</a>');
		str = str.replace(/((http|https|ftp|rtsp|mms):\/\/[A-Za-z0-9\.\/=\?%\-&_~`@':+!]+)$/ig, '<a href="$1" target="_blank">$1</a>');
		str = str.replace(/[^>=\]""]((http|https|ftp|rtsp|mms):\/\/[A-Za-z0-9\.\/=\?%\-&_~`@':+!]+)/ig, '<a href="$1" target="_blank">$1</a>');
	}

	if(!fetchCheckbox('bbcodeoff') && allowbbcode) {
		str= str.replace(/\[url\]\s*(www.|https?:\/\/|ftp:\/\/|gopher:\/\/|news:\/\/|telnet:\/\/|rtsp:\/\/|mms:\/\/|callto:\/\/|ed2k:\/\/){1}([^\[\"']+?)\s*\[\/url\]/ig, function($1, $2, $3) {return cuturl($2 + $3);});
		str= str.replace(/\[url=www.([^\[\"']+?)\](.+?)\[\/url\]/ig, '<a href="http://www.$1" target="_blank">$2</a>');
		str= str.replace(/\[url=(https?|ftp|gopher|news|telnet|rtsp|mms|callto|ed2k){1}:\/\/([^\[\"']+?)\]([\s\S]+?)\[\/url\]/ig, '<a href="$1://$2" target="_blank">$3</a>');

		str= str.replace(/\[email\](.*?)\[\/email\]/ig, '<a href="mailto:$1">$1</a>');

		str= str.replace(/\[email=(.[^\[]*)\](.*?)\[\/email\]/ig, '<a href="mailto:$1" target="_blank">$2</a>');

		str = str.replace(/\[color=([^\[\<]+?)\]/ig, '<font color="$1">');

		str = str.replace(/\[size=(\d+?)\]/ig, '<font size="$1">');
		str = str.replace(/\[size=(\d+(px|pt|in|cm|mm|pc|em|ex|%)+?)\]/ig, '<font style="font-size: $1">');
		str = str.replace(/\[font=([^\[\<]+?)\]/ig, '<font face="$1">');
		str = str.replace(/\[align=([^\[\<]+?)\]/ig, '<p align="$1">');

		re = /\s*\[table(=(\d{1,3}%?))?\][\n\r]*([\s\S]+?)[\n\r]*\[\/table\]\s*/ig;
		str = str.replace(re, function($1, $2, $3, $4) {return parsetable($3, $4);});
		str = str.replace(re, function($1, $2, $3, $4) {return parsetable($3, $4);});
		str = str.replace(re, function($1, $2, $3, $4) {return parsetable($3, $4);});
		str = str.replace(re, function($1, $2, $3, $4) {return parsetable($3, $4);});

		var searcharray = new Array(
			'\\\[\\\/color\\\]', '\\\[\\\/size\\\]', '\\\[\\\/font\\\]', '\\\[\\\/align\\\]', '\\\[b\\\]', '\\\[\\\/b\\\]',
			'\\\[i\\\]', '\\\[\\\/i\\\]', '\\\[u\\\]', '\\\[\\\/u\\\]', '\\\[list\\\]', '\\\[list=1\\\]', '\\\[list=a\\\]',
			'\\\[list=A\\\]', '\\\[\\\*\\\]', '\\\[\\\/list\\\]', '\\\[indent\\\]', '\\\[\\\/indent\\\]'
		);
		var replacearray = new Array(
			'</font>', '</font>', '</font>', '</p>', '<b>', '</b>', '<i>',
			'</i>', '<u>', '</u>', '<ul>', '<ol type=1>', '<ol type=a>',
			'<ol type=A>', '<li>', '</ul></ol>', '<blockquote>', '</blockquote>'
		);
		var len = searcharray.length;
		for(var i = 0; i < len; i++) {
			re = new RegExp(searcharray[i], "ig");
			str = str.replace(re, replacearray[i]);
		}
	}

	if(!fetchCheckbox('bbcodeoff')) {
		if(allowimgcode) {
			str = str.replace(/\[img\]\s*([^\[\<\r\n]+?)\s*\[\/img\]/ig, '<img src="$1" border="0" onload="if(this.width>screen.width*0.7) {this.resized=true; this.width=screen.width*0.7; this.alt=\'Click here to open new window\\nCTRL+Mouse wheel to zoom in/out\';}" onmouseover="if(this.width>screen.width*0.7) {this.resized=true; this.width=screen.width*0.7; this.style.cursor=\'hand\'; this.alt=\'Click here to open new window\\nCTRL+Mouse wheel to zoom in/out\';}" onclick="if(!this.resized) {return true;} else {window.open(\'$1\');}" onmousewheel="return imgzoom(this);" alt="" />');
			str = str.replace(/\[img=(\d{1,3})[x|\,](\d{1,3})\]\s*([^\[\<\r\n]+?)\s*\[\/img\]/ig, '<img width="$1" height="$2" src="$3" border="0" alt="" />');

		} else {
			str = str.replace(/\[img\]\s*([^\[\<\r\n]+?)\s*\[\/img\]/ig, '<a href="$1" target="_blank">$1</a>');
			str = str.replace(/\[img=(\d{1,3})[x|\,](\d{1,3})\]\s*([^\[\<\r\n]+?)\s*\[\/img\]/ig, '<a href="$1" target="_blank">$1</a>');
		}
	}

	for(var i = 0; i <= pcodecount; i++) {
		str = str.replace("[\tDISCUZ_CODE_" + i + "\t]", codehtml[i]);
	}

	if(!forumallowhtml && !(allowhtml && fetchCheckbox('htmlon'))) {
		str = str.replace(/\t/ig, '&nbsp; &nbsp; &nbsp; &nbsp; ');
		str = str.replace(/   /ig, '&nbsp; &nbsp;');
		str = str.replace(/  /ig, '&nbsp;&nbsp;');
		str = str.replace(/\r\n/ig, '<br />');
		str = str.replace(/[\r\n]/ig, '<br />');
	}

	return(str);
}

function codetag(text) {
	pcodecount++;

	text = text.replace(/<br[^\>]*>/ig, "\n");
	text = text.replace(/^[\n\r]*([\s\S]+?)[\n\r]*$/ig, '$1');
	text = text.replace(/<(\/|)[A-Za-z].*?>/ig, '');

	codehtml[pcodecount] = "[code]" + text + "[/code]";
	codecount++;
	return "[\tDISCUZ_CODE_" + pcodecount + "\t]";
}

function cuturl(url) {
	var length = 65;
	var urllink = '<a href="' + (url.toLowerCase().substr(0, 4) == 'www.' ? 'http://' + url : url) + '" target="_blank">';
	if(url.length > length) {
		url = url.substr(0, parseInt(length * 0.5)) + ' ... ' + url.substr(url.length - parseInt(length * 0.3));
	}
	urllink += url + '</a>';
	return urllink;
}

function dpstag(options, text, tagname) {
	if(trim(text) == '') {
		return '';
	}
	var pend = parsestyle(options, '', '');
	var prepend = pend['prepend'];
	var append = pend['append'];
	if(in_array(tagname, ['div', 'p'])) {
		align = getoptionvalue('align', options);
		if(in_array(align, ['left', 'center', 'right'])) {
			prepend = '[align=' + align + ']' + prepend;
			append += '[/align]';
		} else {
			append += "\n";
		}
	}
	return prepend + recursion(tagname, text, 'dpstag') + append;
}

function fetchCheckbox(cbn) {
	return $(cbn) && $(cbn).checked == true ? 1 : 0;
}

function fetchoptionvalue(option, text) {
	if((position = strpos(text, option)) !== false) {
		delimiter = position + option.length;
		if(text.charAt(delimiter) == '"') {
			delimchar = '"';
		} else if(text.charAt(delimiter) == '\'') {
			delimchar = '\'';
		} else {
			delimchar = ' ';
		}
		delimloc = strpos(text, delimchar, delimiter + 1);
		if(delimloc === false) {
			delimloc = text.length;
		} else if(delimchar == '"' || delimchar == '\'') {
			delimiter++;
		}
		return trim(text.substr(delimiter, delimloc - delimiter));
	} else {
		return '';
	}
}

function fonttag(fontoptions, text) {
	var prepend = '';
	var append = '';
	var tags = new Array();
	tags = {'font' : 'face=', 'size' : 'size=', 'color' : 'color='};
	for(bbcode in tags) {
		optionvalue = fetchoptionvalue(tags[bbcode], fontoptions);
		if(optionvalue) {
			prepend += '[' + bbcode + '=' + optionvalue + ']';
			append = '[/' + bbcode + ']' + append;
		}
	}

	var pend = parsestyle(fontoptions, prepend, append);
	return pend['prepend'] + recursion('font', text, 'fonttag') + pend['append'];
}

function getoptionvalue(option, text) {
	re = new RegExp(option + "(\s+?)?\=(\s+?)?[\"']?(.+?)([\"']|$|>)", "ig");
	var matches = re.exec(text);
	if(matches != null && matches.length) {
		return trim(matches[3]);
	}
	return '';
}

function html2bbcode(str) {

	str = trim(str);

	if(str == '' || forumallowhtml || (allowhtml && fetchCheckbox('htmlon'))) {
		return str;
	}

	str= str.replace(/\s*\[code\]([\s\S]+?)\[\/code\]\s*/ig, function($1, $2) {return codetag($2);});
	str = str.replace(/<style.*?>[\s\S]*?<\/style>/ig, '');
	str = str.replace(/<script.*?>[\s\S]*?<\/script>/ig, '');
	str = str.replace(/<noscript.*?>[\s\S]*?<\/noscript>/ig, '');
	str = str.replace(/<select.*?>[\s\S]*?<\/select>/ig, '');
	str = str.replace(/<object.*?>[\s\S]*?<\/object>/ig, '');
	str = str.replace(/<!--[\s\S]*?-->/ig, '');
	str = str.replace(/on[a-zA-Z]{3,16}\s?=\s?(["'])[\s\S]*?\1/ig, '');
	str = str.replace(/(\r\n|\n|\r)/ig, '');

	str = str.replace(/<table([^>]*width[^>]*)>/ig, function($1, $2) {return tabletag($2);});
	str = str.replace(/<table[^>]*>/ig, '[table]');
	str = str.replace(/<tr[^>]*>/ig, '[tr]');
	str = str.replace(/<td>/ig, '[td]');
	str = str.replace(/<td([^>]+)>/ig, function($1, $2) {return tdtag($2);});
	str = str.replace(/<\/td>/ig, '[/td]');
	str = str.replace(/<\/tr>/ig, '[/tr]');
	str = str.replace(/<\/table>/ig, '[/table]');

	str = str.replace(/<h([0-9]+)[^>]*>(.*)<\/h\\1>/ig, "[size=$1]$2[/size]\n\n");
	str = str.replace(/<img[^>]+smilieid=(["']?)(\d+)(\1)[^>]*>/ig, function($1, $2, $3) {return smilies[$3]['code'];});
	str = str.replace(/<img([^>]*src[^>]*)>/ig, function($1, $2) {return imgtag($2);});
	str = str.replace(/<a\s+?name=(["']?)(.+?)(\1)[\s\S]*?>([\s\S]*?)<\/a>/ig, '$4');
	str = str.replace(/<br[^\>]*>/ig, "\n");

	str = recursion('b', str, 'simpletag', 'b');
	str = recursion('strong', str, 'simpletag', 'b');
	str = recursion('i', str, 'simpletag', 'i');
	str = recursion('em', str, 'simpletag', 'i');
	str = recursion('u', str, 'simpletag', 'u');
	str = recursion('a', str, 'atag');
	str = recursion('font', str, 'fonttag');
	str = recursion('blockquote', str, 'simpletag', 'indent');
	str = recursion('ol', str, 'listtag');
	str = recursion('ul', str, 'listtag');
	str = recursion('div', str, 'dpstag');
	str = recursion('p', str, 'dpstag');
	str = recursion('span', str, 'dpstag');

	str = str.replace(/<[\/\!]*?[^<>]*?>/ig, '');

	for(var i = 0; i <= pcodecount; i++) {
		str = str.replace("[\tDISCUZ_CODE_" + i + "\t]", codehtml[i]);
	}

	str = str.replace(/&amp;/ig, '&');
	str = str.replace(/&nbsp;/ig, ' ');
	str = str.replace(/&lt;/ig, '<');
	str = str.replace(/&gt;/ig, '>');

	return str