解析得到的代码能通过XHTML 1.0 STRICT验证;
包含了标题,链接,字体,对齐,图片,引用,列表等方面的功能.
Ubb.ReadMe.htm
- <div id="ubb">
- <h1>UBB代码说明</h1>
-
- <h2>标题</h2>
- <dl>
- <dt>[h1]标题一[/h1]</dt>
- <dd><h1>标题一</h1></dd>
- <dt>[h2]标题二[/h2]</dt>
-
- <dd><h2>标题二</h2></dd>
- <dt>[h1]标题三[/h1]</dt>
- <dd><h3>标题三</h3></dd>
- <dt>[h4]标题四[/h4]</dt>
- <dd><h4>标题四</h4></dd>
- <dt>[h5]标题五[/h5]</dt>
-
- <dd><h5>标题五</h5></dd>
- <dt>[h6]标题六[/h6]</dt>
- <dd><h6>标题六</h6></dd>
- </dl>
- <h2>链接</h2>
- <dl>
- <dt>[url]www.unibetter.com[/url]</dt>
-
- <dd><a rel="nofollow" href="http://www.unibetter.com">unibetter.com</a></dd>
- <dt>[url]http://www.unibetter.com[/url]</dt>
- <dd><a rel="nofollow" href="http://www.unibetter.com">http://www.unibetter.com</a></dd>
- <dt>[url=http://www.unibetter.com]unibetter大学生论坛[/url]</dt>
- <dd><a rel="nofollow" href="http://www.unibetter.com" title="unibetter大学生论坛">unibetter大学生论坛</a></dd>
- <dt>[email]none@none.com[/email]</dt>
-
- <dd><a href="mailto:none@none.com">none@none.com</a></dd>
- </dl>
- <h2>字体大小</h2>
- <dl>
- <dt>[size=xx-small]文字大小[/size]</dt>
- <dd><span style="font-size:xx-small">文字大小</span></dd>
- <dt>[size=x-small]文字大小[/size]</dt>
-
- <dd><span style="font-size:x-small">文字大小</span></dd>
- <dt>[size=small]文字大小[/size]</dt>
- <dd><span style="font-size:small">文字大小</span></dd>
- <dt>[size=medium]文字大小[/size]</dt>
- <dd><span style="font-size:medium">文字大小</span></dd>
- <dt>[size=large]文字大小[/size]</dt>
-
- <dd><span style="font-size:large">文字大小</span></dd>
- <dt>[size=x-large]文字大小[/size]</dt>
- <dd><span style="font-size:x-large">文字大小</span></dd>
- <dt>[size=xx-large]文字大小[/size]</dt>
- <dd><span style="font-size:xx-large">文字大小</span></dd>
- </dl>
-
- <h2>字体格式</h2>
- <dl>
- <dt>[font=黑体]文字字体[/font]</dt>
- <dd><span style="font-family:黑体">文字字体</span></dd>
- <dt>[color=red]文字颜色[/color]</dt>
- <dd><span style="color:red">文字颜色</span></dd>
-
- <dt>[color=#0000ff]文字颜色[/color]</dt>
- <dd><span style="color:#0000ff">文字颜色</span></dd>
- <dt>[b]粗体字[/b]</dt>
- <dd><strong>粗体字</strong></dd>
- <dt>[i]斜体字[/i]</dt>
- <dd><i>斜体字</i></dd>
-
- <dt>[u]下划线[/u]</dt>
- <dd><span style="text-decoration:underline">下划线</span></dd>
- </dl>
- </div>
- <h2>对齐</h2>
- <dl>
- <dt>[left]左对齐[/left]</dt>
-
- <dd><div style="text-align:left">左对齐</div></dd>
- <dt>[right]右对齐[/right]</dt>
- <dd><div style="text-align:right">右对齐</div></dd>
- <dt>[center]右对齐[/center]</dt>
- <dd><div style="text-align:center">居中</div></dd>
- </dl>
-
- <h2>图片</h2>
- <dl>
- <dt>[hr]</dt>
- <dd><hr /></dd>
- <dt>[img]http://www.w3.org/Icons/valid-xhtml10[/img]</dt>
- <dd><img src="http://www.w3.org/Icons/valid-xhtml10" alt="" /></dd>
- <dt>[img=176x62]http://www.w3.org/Icons/valid-xhtml10[/img]</dt>
-
- <dd><img src="http://www.w3.org/Icons/valid-xhtml10" style="width:176px;height:62px" alt="" /></dd>
- </dl>
- <h2>引用</h2>
- <dl>
- <dt>[quote]毛主席他老人家说:一切反动派都是纸老虎![/quote]</dt>
- <dd><blockquote><div>毛主席他老人家说:一切反动派都是纸老虎!</div></blockquote></dd>
- </dl>
-
- <h2>列表</h2>
- <h3>无序列表</h3>
- <p>[list]
- [*]苹果
- [*]香蕉
- [*]桃
- [/list]</p>
- <ul><li>苹果</li><li>香蕉</li><li>桃</li></ul>
-
- <h3>有序列表</h3>
- <p>[list=1]
- [*]打开冰箱门
- [*]把大象赶进冰箱
- [*]关上冰箱门
- [/list]</p>
- <ol style="list-style:decimal;"><li>打开冰箱门</li><li>把大象赶进冰箱</li><li>关上冰箱门</li></ol>
- <p>[list=i]
- [*]打开冰箱门
- [*]把大象赶进冰箱
- [*]关上冰箱门
- [/list]</p>
-
- <ol style="list-style:lower-roman;"><li>打开冰箱门</li><li>把大象赶进冰箱</li><li>关上冰箱门</li></ol>
- <p>[list=I]
- [*]打开冰箱门
- [*]把大象赶进冰箱
- [*]关上冰箱门
- [/list]</p>
- <ol style="list-style:upper-roman;"><li>打开冰箱门</li><li>把大象赶进冰箱</li><li>关上冰箱门</li></ol>
-
- <p>[list=a]
- [*]打开冰箱门
- [*]把大象赶进冰箱
- [*]关上冰箱门
- [/list]</p>
- <ol style="list-style:lower-alpha;"><li>打开冰箱门</li><li>把大象赶进冰箱</li><li>关上冰箱门</li></ol>
- <p>[list=A]
- [*]打开冰箱门
- [*]把大象赶进冰箱
- [*]关上冰箱门
- [/list]</p>
-
- <ol style="list-style:upper-alpha;"><li>打开冰箱门</li><li>把大象赶进冰箱</li><li>关上冰箱门</li></ol>
- </div>
代码如下:
//作者:deerchao
// http://www.unibetter.com/blogs/blogdeerchao/default.aspx
//在不移除以上(及本条)注释的前提下,任何人可以以任何方式使用此代码.
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代码为Html代码
/// </summary>
/// <param name="ubb">Ubb代码</param>
/// <returns>解析得到的Html代码</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代码为Html代码,所有的链接为rel="nofollow"
/// </summary>
/// <param name="ubb">Ubb代码</param>
/// <returns>解析得到的Html代码</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)/](.*?)/[/h/1/]", "<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, @"/r/n", "<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;
}
}
}