bbcode.js

一个完整的论坛系统（包括后台管理和数据库）

		re = /width=(["']?)(\d+)(\1)/i;
		var matches = re.exec(attributes);
		if(matches != null) {
			width = matches[2];
		}

		re = /height=(["']?)(\d+)(\1)/i;
		var matches = re.exec(attributes);
		if(matches != null) {
			height = matches[2];
		}
	}

	re = /aid=(["']?)attach_(\d+)(\1)/i;
	var matches = re.exec(attributes);
	var imgtag = 'img';
	if(matches != null) {
		imgtag = 'localimg';
		src = matches[2];
	}
	re = /aid=(["']?)attachimg_(\d+)(\1)/i;
	var matches = re.exec(attributes);
	if(matches != null) {
		return '[attachimg]' + matches[2] + '[/attachimg]';
	}
	return width > 0 && height > 0 ?
		'[' + imgtag + '=' + width + ',' + height + ']' + src + '[/' + imgtag + ']' :
		'[img]' + src + '[/img]';
}

function listtag(listoptions, text, tagname) {
	text = text.replace(/<li>(([\s\S](?!<\/li))*?)(?=<\/?ol|<\/?ul|<li|\[list|\[\/list)/ig, '<li>$1</li>') + (is_opera ? '</li>' : '');
	text = recursion('li', text, 'litag');
	var opentag = '[list]';
	var listtype = fetchoptionvalue('type=', listoptions);
	listtype = listtype != '' ? listtype : (tagname == 'ol' ? '1' : '');
	if(in_array(listtype, ['1', 'a', 'A'])) {
		opentag = '[list=' + listtype + ']';
	}
	return text ? opentag + recursion(tagname, text, 'listtag') + '[/list]' : '';
}

function litag(listoptions, text) {
	return '[*]' + text.replace(/(\s+)$/g, '');
}

function parsecode(text) {
	codecount++;

	text = text.replace(/^[\n\r]*([\s\S]+?)[\n\r]*$/ig, '$1');
	text = htmlspecialchars(text);

	codehtml[codecount] = '[code]' + text + '[/code]';

	return "[\tDISCUZ_CODE_" + codecount + "\t]";
}

function parsestyle(tagoptions, prepend, append) {
	var searchlist = [
		['align', true, 'text-align:\\s*(left|center|right);?', 1],
		['float', true, 'float:\\s*(left|right);?', 1],
		['color', true, '^(?:\\s|)color:\\s*([^;]+);?', 1],
		['font', true, 'font-family:\\s*([^;]+);?', 1],
		['size', true, 'font-size:\\s*(\\d+(\\.\\d+)?(px|pt|in|cm|mm|pc|em|ex|%|));?', 1],
		['b', false, 'font-weight:\\s*(bold);?'],
		['i', false, 'font-style:\\s*(italic);?'],
		['u', false, 'text-decoration:\\s*(underline);?']
	];
	var style = getoptionvalue('style', tagoptions);
	re = /^(?:\s|)color:\s*rgb\((\d+),\s*(\d+),\s*(\d+)\)(;?)/ig;
	style = style.replace(re, function($1, $2, $3, $4, $5) {return("color:#" + parseInt($2).toString(16) + parseInt($3).toString(16) + parseInt($4).toString(16) + $5);});
	var len = searchlist.length;
	for(var i = 0; i < len; i++) {
		re = new RegExp(searchlist[i][2], "ig");
		match = re.exec(style);
		if(match != null) {
			opnvalue = match[searchlist[i][3]];
			prepend += '[' + searchlist[i][0] + (searchlist[i][1] == true ? '=' + opnvalue + ']' : ']');
			append = '[/' + searchlist[i][0] + ']' + append;
		}
	}
	return {'prepend' : prepend, 'append' : append};
}

function parsetable(width, bgcolor, str) {

	if(isUndefined(width)) {
		var width = '';
	} else {
		width = width.substr(width.length - 1, width.length) == '%' ? (width.substr(0, width.length - 1) <= 98 ? width : '98%') : (width <= 560 ? width : '98%');
	}

	str = str.replace(/\[tr(?:=([\(\)%,#\w]+))?\]\s*\[td(?:=(\d{1,2}),(\d{1,2})(?:,(\d{1,4}%?))?)?\]/ig, function($1, $2, $3, $4, $5) {
		return '<tr' + ($2 ? ' style="background: ' + $2 + '"' : '') + '><td' + ($3 ? ' colspan="' + $3 + '"' : '') + ($4 ? ' rowspan="' + $4 + '"' : '') + ($5 ? ' width="' + $5 + '"' : '') + '>';
	});
	str = str.replace(/\[\/td\]\s*\[td(?:=(\d{1,2}),(\d{1,2})(?:,(\d{1,4}%?))?)?\]/ig, function($1, $2, $3, $4) {
		return '</td><td' + ($2 ? ' colspan="' + $2 + '"' : '') + ($3 ? ' rowspan="' + $3 + '"' : '') + ($4 ? ' width="' + $4 + '"' : '') + '>';
	});
	str = str.replace(/\[\/td\]\s*\[\/tr\]/ig, '</td></tr>');

	return '<table ' + (width == '' ? '' : 'width="' + width + '" ') + 'class="t_table"' + (isUndefined(bgcolor) ? '' : ' style="background: ' + bgcolor + '"') + '>' + str + '</table>';
}

function preg_replace(search, replace, str) {
	var len = search.length;
	for(var i = 0; i < len; i++) {
		re = new RegExp(search[i], "ig");
		str = str.replace(re, typeof replace == 'string' ? replace : (replace[i] ? replace[i] : replace[0]));
	}
	return str;
}

function recursion(tagname, text, dofunction, extraargs) {
	if(extraargs == null) {
		extraargs = '';
	}
	tagname = tagname.toLowerCase();

	var open_tag = '<' + tagname;
	var open_tag_len = open_tag.length;
	var close_tag = '</' + tagname + '>';
	var close_tag_len = close_tag.length;
	var beginsearchpos = 0;

	do {
		var textlower = text.toLowerCase();
		var tagbegin = textlower.indexOf(open_tag, beginsearchpos);
		if(tagbegin == -1) {
			break;
		}

		var strlen = text.length;

		var inquote = '';
		var found = false;
		var tagnameend = false;
		var optionend = 0;
		var t_char = '';

		for(optionend = tagbegin; optionend <= strlen; optionend++) {
			t_char = text.charAt(optionend);
			if((t_char == '"' || t_char == "'") && inquote == '') {
				inquote = t_char;
			} else if((t_char == '"' || t_char == "'") && inquote == t_char) {
				inquote = '';
			} else if(t_char == '>' && !inquote) {
				found = true;
				break;
			} else if((t_char == '=' || t_char == ' ') && !tagnameend) {
				tagnameend = optionend;
			}
		}

		if(!found) {
			break;
		}
		if(!tagnameend) {
			tagnameend = optionend;
		}

		var offset = optionend - (tagbegin + open_tag_len);
		var tagoptions = text.substr(tagbegin + open_tag_len, offset)
		var acttagname = textlower.substr(tagbegin * 1 + 1, tagnameend - tagbegin - 1);

		if(acttagname != tagname) {
			beginsearchpos = optionend;
			continue;
		}

		var tagend = textlower.indexOf(close_tag, optionend);
		if(tagend == -1) {
			break;
		}

		var nestedopenpos = textlower.indexOf(open_tag, optionend);
		while(nestedopenpos != -1 && tagend != -1) {
			if(nestedopenpos > tagend) {
				break;
			}
			tagend = textlower.indexOf(close_tag, tagend + close_tag_len);
			nestedopenpos = textlower.indexOf(open_tag, nestedopenpos + open_tag_len);
		}

		if(tagend == -1) {
			beginsearchpos = optionend;
			continue;
		}

		var localbegin = optionend + 1;
		var localtext = eval(dofunction)(tagoptions, text.substr(localbegin, tagend - localbegin), tagname, extraargs);

		text = text.substring(0, tagbegin) + localtext + text.substring(tagend + close_tag_len);

		beginsearchpos = tagbegin + localtext.length;

	} while(tagbegin != -1);

	return text;
}

function simpletag(options, text, tagname, parseto) {
	if(trim(text) == '') {
		return '';
	}
	text = recursion(tagname, text, 'simpletag', parseto);
	return '[' + parseto + ']' + text + '[/' + parseto + ']';
}

function strpos(haystack, needle, offset) {
	if(isUndefined(offset)) {
		offset = 0;
	}

	index = haystack.toLowerCase().indexOf(needle.toLowerCase(), offset);

	return index == -1 ? false : index;
}

function tabletag(attributes) {
	var width = '';
	re = /width=(["']?)(\d{1,4}%?)(\1)/i;
	var matches = re.exec(attributes);

	if(matches != null) {
		width = matches[2].substr(matches[2].length - 1, matches[2].length) == '%' ?
			(matches[2].substr(0, matches[2].length - 1) <= 98 ? matches[2] : '98%') :
			(matches[2] <= 560 ? matches[2] : '98%');
	} else {
		re = /width\s?:\s?(\d{1,4})([px|%])/ig;
		var matches = re.exec(attributes);
		if(matches != null) {
			width = matches[2] == '%' ? (matches[1] <= 98 ? matches[1] : '98%') : (matches[1] <= 560 ? matches[1] : '98%');
		}
	}

	var bgcolor = '';
	re = /(?:background|background-color|bgcolor)[:=]\s*(["']?)((rgb\(\d{1,3}%?,\s*\d{1,3}%?,\s*\d{1,3}%?\))|(#[0-9a-fA-F]{3,6})|([a-zA-Z]{1,20}))(\1)/i;
	var matches = re.exec(attributes);
	if(matches != null) {
		bgcolor = matches[2];
		width = width ? width : '98%';
	}

	return bgcolor ? '[table=' + width + ',' + bgcolor + ']' : (width ? '[table=' + width + ']' : '[table]');
}

function tdtag(attributes) {

	var colspan = 1;
	var rowspan = 1;
	var width = '';

	re = /colspan=(["']?)(\d{1,2})(\1)/ig;
	var matches = re.exec(attributes);
	if(matches != null) {
		colspan = matches[2];
	}

	re = /rowspan=(["']?)(\d{1,2})(\1)/ig;
	var matches = re.exec(attributes);
	if(matches != null) {
		rowspan = matches[2];
	}

	re = /width=(["']?)(\d{1,4}%?)(\1)/ig;
	var matches = re.exec(attributes);
	if(matches != null) {
		width = matches[2];
	}

	return in_array(width, ['', '0', '100%']) ?
		(colspan == 1 && rowspan == 1 ? '[td]' : '[td=' + colspan + ',' + rowspan + ']') :
		'[td=' + colspan + ',' + rowspan + ',' + width + ']';
}