站長(zhǎng)資訊網(wǎng) 解析得到的代碼能通過(guò)XHTML 1.0 STRICT驗(yàn)證;
包含了標(biāo)題,鏈接,字體,對(duì)齊,圖片,引用,列表等方面的功能.
Ubb.ReadMe.htm
[Ctrl+A 全選 注:如需引入外部Js需刷新才能執(zhí)行]
// http://www.unibetter.com/blogs/blogdeerchao/default.aspx
//在不移除以上(及本條)注釋的前提下,任何人可以以任何方式使用此代碼.
using System;
using System.Collections.Generic;
using System.Text;
using System.Web;
using System.Text.RegularExpressions;
namespace Deerchao.Web
{
public class UbbDecoder
{
private static readonly RegexOptions options = RegexOptions.Compiled | RegexOptions.Singleline;
/// <summary>
/// 解析Ubb代碼為Html代碼
/// </summary>
/// <param name=”ubb”>Ubb代碼</param>
/// <returns>解析得到的Html代碼</returns>
public static string Decode(string ubb)
{
if (string.IsNullOrEmpty(ubb))
return null;
string result = ubb;
result = HttpUtility.HtmlEncode(result);
result = DecodeStyle(result);
result = DecodeFont(result);
result = DecodeColor(result);
result = DecodeImage(result);
result = DecodeLinks(result);
result = DecodeQuote(result);
result = DecodeAlign(result);
result = DecodeList(result);
result = DecodeHeading(result);
result = DecodeBlank(result);
return result;
}
/// <summary>
/// 解析Ubb代碼為Html代碼,所有的鏈接為rel=”nofollow”
/// </summary>
/// <param name=”ubb”>Ubb代碼</param>
/// <returns>解析得到的Html代碼</returns>
public static string DecodeNoFollow(string ubb)
{
if (string.IsNullOrEmpty(ubb))
return null;
string result = ubb;
result = HttpUtility.HtmlEncode(result);
result = DecodeStyle(result);
result = DecodeFont(result);
result = DecodeColor(result);
result = DecodeImage(result);
result = DecodeLinksNoFollow(result);
result = DecodeQuote(result);
result = DecodeAlign(result);
result = DecodeList(result);
result = DecodeHeading(result);
result = DecodeBlank(result);
return result;
}
private static string DecodeHeading(string ubb)
{
string result = ubb;
result = Regex.Replace(result, @”[h(d)](.*?)[/h1]”, “<h$1>$2</h$1>”, options);
return result;
}
private static string DecodeList(string ubb)
{
string sListFormat = “<ol style=”list-style:{0};”>$1</ol>”;
string result = ubb;
// Lists
result = Regex.Replace(result, @”[*]([^[]*)”, “<li>$1</li>”, options);
result = Regex.Replace(result, @”[list]s*(.*?)[/list]”, “<ul>$1</ul>”, options);
result = Regex.Replace(result, @”[list=1]s*(.*?)[/list]”, string.Format(sListFormat, “decimal”), options);
result = Regex.Replace(result, @”[list=i]s*(.*?)[/list]”, string.Format(sListFormat, “lower-roman”), options);
result = Regex.Replace(result, @”[list=I]s*(.*?)[/list]”, string.Format(sListFormat, “upper-roman”), options);
result = Regex.Replace(result, @”[list=a]s*(.*?)[/list]”, string.Format(sListFormat, “lower-alpha”), options);
result = Regex.Replace(result, @”[list=A]s*(.*?)[/list]”, string.Format(sListFormat, “upper-alpha”), options);
return result;
}
private static string DecodeBlank(string ubb)
{
string result = ubb;
result = Regex.Replace(result, @”(?<= ) | (?= )”, ” “, options);
result = Regex.Replace(result, @”rn”, “<br />”);
string[] blockTags = {“h[1-6]”, “li”, “list”, “div”, “p”, “ul”};
//clear br before block tags(start or end)
foreach (string tag in blockTags)
{
Regex r = new Regex(“<br />(<” + tag + “)”,options);
result = r.Replace(result, “$1”);
r = new Regex(“<br />(</” + tag + “)”,options);
result = r.Replace(result, “$1”);
}
return result;
}
private static string DecodeAlign(string ubb)
{
string result = ubb;
result = Regex.Replace(result, @”[left](.*?)[/left]”, “<div style=”text-align:left”>$1</div>”, options);
result = Regex.Replace(result, @”[right](.*?)[/right]”, “<div style=”text-align:right”>$1</div>”, options);
result = Regex.Replace(result, @”[center](.*?)[/center]”, “<div style=”text-align:center”>$1</div>”, options);
return result;
}
private static string DecodeQuote(string ubb)
{
string result = ubb;
result = Regex.Replace(result, @”[quote]”, “<blockquote><div>”, options);
result = Regex.Replace(result, @”[/quote]”, “</div></blockquote>”, options);
return result;
}
private static string DecodeFont(string ubb)
{
string result = ubb;
result = Regex.Replace(result, @”[size=([-w]+)](.*?)[/size]”, “<span style=”font-size:$1″>$2</span>”, options);
result = Regex.Replace(result, @”[font=(.*?)](.*?)[/font]”, “<span style=”font-family:$1″>$2</span>”, options);
return result;
}
private static string DecodeLinks(string ubb)
{
string result = ubb;
result = Regex.Replace(result, @”[url]www.(.*?)[/url]”, “<a href=”http://www.$1″>$1</a>”, options);
result = Regex.Replace(result, @”[url](.*?)[/url]”, “<a href=”$1″>$1</a>”, options);
result = Regex.Replace(result, @”[url=(.*?)](.*?)[/url]”, “<a href=”$1″ title=”$2″>$2</a>”, options);
result = Regex.Replace(result, @”[email](.*?)[/email]”, “<a href=”mailto:$1″>$1</a>”, options);
return result;
}
private static string DecodeLinksNoFollow(string ubb)
{
string result = ubb;
result = Regex.Replace(result, @”[url]www.(.*?)[/url]”, “<a rel=”nofollow” href=”http://www.$1″>$1</a>”, options);
result = Regex.Replace(result, @”[url](.*?)[/url]”, “<a rel=”nofollow” href=”$1″>$1</a>”, options);
result = Regex.Replace(result, @”[url=(.*?)](.*?)[/url]”, “<a rel=”nofollow” href=”$1″ title=”$2″>$2</a>”, options);
result = Regex.Replace(result, @”[email](.*?)[/email]”, “<a href=”mailto:$1″>$1</a>”, options);
return result;
}
private static string DecodeImage(string ubb)
{
string result = ubb;
result = Regex.Replace(result, @”[hr]”, “<hr />”, options);
result = Regex.Replace(result, @”[img](.+?)[/img]”, “<img src=”$1″ alt=”” />”, options);
result = Regex.Replace(result, @”[img=(d+)x(d+)](.+?)[/img]”, “<img src=”$3″ style=”width:$1px;height:$2px” alt=”” />”, options);
return result;
}
private static string DecodeColor(string ubb)
{
string result = ubb;
result = Regex.Replace(result, @”[color=(#?w+?)](.+?)[/color]”, “<span style=”color:$1″>$2</span>”,options);
return result;
}
private static string DecodeStyle(string ubb)
{
string result=ubb;
//we don’t need this for perfomance and other consideration:
//(<table[^>]*>(?><table[^>]*>(?<Depth>)|</table>(?<-Depth>)|.)+(?(Depth)(?!))</table>)
result = Regex.Replace(result, @”[[b]](.*?)[/[b]]”, “<strong>$1</strong>”, options);
result = Regex.Replace(result, @”[[u]](.*?)[/[u]]”, “<span style=”text-decoration:underline”>$1</span>”, options);
result = Regex.Replace(result, @”[[i]](.*?)[/[i]]”, “<i>$1</i>”, options);
return result;
}
}
}
