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您的位置：网站首页 > 网络编程 > 正则表达式

C#正则实现Ubb解析类的代码

发布时间：2007-03-30　作者：　来源：转载

标签：雪佛兰通用奢华劳斯莱斯旗舰版 64位收藏夹解调器

解析得到的代码能通过XHTML1.0STRICT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.htmUBB代码说明标题[h1]标题一[/h1]标题一[h2]标题二[/h2]标题二[h1]标题三[/h1]标题三[h4]标题四[/h4]标题四[h5]标题五[/h5]标题五[h6]标题六[/h6

解析得到的代码能通过XHTML1.0STRICT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

<h1>UBB代码说明</h1>

<h2>标题</h2>  
        
        [h1]标题一[/h1]  
        <h1>标题一</h1>  
        [h2]标题二[/h2]

<h2>标题二</h2>  
        [h1]标题三[/h1]  
        <h3>标题三</h3>  
        [h4]标题四[/h4]  
        <h4>标题四</h4>  
        [h5]标题五[/h5]

<h5>标题五</h5>  
        [h6]标题六[/h6]  
        <h6>标题六</h6>  
        
      <h2>链接</h2>  
        
        [url]www.unibetter.com[/url]

unibetter.com  
        [url]http://www.unibetter.com[/url]  
        http://www.unibetter.com  
        [url=http://www.unibetter.com]unibetter大学生论坛[/url]  
        unibetter大学生论坛  
        [email]none@none.com[/email]

none@none.com  
        
      <h2>字体大小</h2>  
        
        [size=xx-small]文字大小[/size]  
        <span style="font-size:xx-small">文字大小</span>  
        [size=x-small]文字大小[/size]

<span style="font-size:x-small">文字大小</span>  
        [size=small]文字大小[/size]  
        <span style="font-size:small">文字大小</span>  
        [size=medium]文字大小[/size]  
        <span style="font-size:medium">文字大小</span>  
        [size=large]文字大小[/size]

<span style="font-size:large">文字大小</span>  
        [size=x-large]文字大小[/size]  
        <span style="font-size:x-large">文字大小</span>  
        [size=xx-large]文字大小[/size]  
        <span style="font-size:xx-large">文字大小</span>

<h2>字体格式</h2>  
        
        [font=黑体]文字字体[/font]  
        <span style="font-family:黑体">文字字体</span>  
        [color=red]文字颜色[/color]  
        <span style="color:red">文字颜色</span>

[color=#0000ff]文字颜色[/color]  
        <span style="color:#0000ff">文字颜色</span>  
        [b]粗体字[/b]  
        <strong>粗体字</strong>  
        [i]斜体字[/i]  
        <i>斜体字</i>

[u]下划线[/u]  
        <span style="text-decoration:underline">下划线</span>  
        
      
    <h2>对齐</h2>  
      
        [left]左对齐[/left]

左对齐  
        [right]右对齐[/right]  
        右对齐  
        [center]右对齐[/center]  
        居中

<h2>图片</h2>  
      
        [hr]  
        <hr />  
        [img]http://www.w3.org/Icons/valid-xhtml10[/img]  
        <img src="http://www.w3.org/Icons/valid-xhtml10" alt="" />  
        [img=176x62]http://www.w3.org/Icons/valid-xhtml10[/img]

<img src="http://www.w3.org/Icons/valid-xhtml10" style="width:176px;height:62px" alt="" />  
      
    <h2>引用</h2>  
      
      [quote]毛主席他老人家说:一切反动派都是纸老虎![/quote]  
      <blockquote>毛主席他老人家说:一切反动派都是纸老虎!</blockquote>

<h2>列表</h2>  
    <h3>无序列表</h3>  
    <p>[list]
[*]苹果
[*]香蕉
[*]桃
[/list]</p>  
    苹果香蕉桃

<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>  
    打开冰箱门把大象赶进冰箱关上冰箱门  
    <p>[list=i]
[*]打开冰箱门
[*]把大象赶进冰箱
[*]关上冰箱门
[/list]</p>

打开冰箱门把大象赶进冰箱关上冰箱门  
    <p>[list=I]
[*]打开冰箱门
[*]把大象赶进冰箱
[*]关上冰箱门
[/list]</p>  
    打开冰箱门把大象赶进冰箱关上冰箱门

<p>[list=a]
[*]打开冰箱门
[*]把大象赶进冰箱
[*]关上冰箱门
[/list]</p>  
    打开冰箱门把大象赶进冰箱关上冰箱门  
    <p>[list=A]
[*]打开冰箱门
[*]把大象赶进冰箱
[*]关上冰箱门
[/list]</p>

打开冰箱门把大象赶进冰箱关上冰箱门

[Ctrl+A 全选注:如需引入外部Js需刷新才能执行]
复制代码代码如下:
//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.

usingSystem;
usingSystem.Collections.Generic;
usingSystem.Text;
usingSystem.Web;
usingSystem.Text.RegularExpressions;

namespaceDeerchao.Web
{
publicclassUbbDecoder
{
privatestaticreadonlyRegexOptionsoptions=RegexOptions.Compiled|RegexOptions.Singleline;

///

///解析Ubb代码为Html代码
///

///Ubb代码
///解析得到的Html代码
publicstaticstringDecode(stringubb)
{
if(string.IsNullOrEmpty(ubb))
returnnull;
stringresult=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);

returnresult;
}

///

///解析Ubb代码为Html代码,所有的链接为rel="nofollow"
///

///Ubb代码
///解析得到的Html代码
publicstaticstringDecodeNoFollow(stringubb)
{
if(string.IsNullOrEmpty(ubb))
returnnull;
stringresult=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);

returnresult;
}

privatestaticstringDecodeHeading(stringubb)
{
stringresult=ubb;
result=Regex.Replace(result,@"[h(d)](.*?)[/h1]","$2",options);
returnresult;
}

privatestaticstringDecodeList(stringubb)
{
stringsListFormat="$1";
stringresult=ubb;
//Lists
result=Regex.Replace(result,@"[*]([^[]*)","

$1

",options);
result=Regex.Replace(result,@"[list]s*(.*?)[/list]","

$1",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);

returnresult;
}

privatestaticstringDecodeBlank(stringubb)
{
stringresult=ubb;

result=Regex.Replace(result,@"(?<=)|(?=)","",options);
result=Regex.Replace(result,@"rn","

");
string[]blockTags={"h[1-6]","li","list","div","p","ul"};
//clearbrbeforeblocktags(startorend)
foreach(stringtaginblockTags)
{
Regexr=newRegex("

(<"+tag+")",options);
result=r.Replace(result,"$1");
r=newRegex("

(result=r.Replace(result,"$1");
}
returnresult;
}

privatestaticstringDecodeAlign(stringubb)
{
stringresult=ubb;

result=Regex.Replace(result,@"[left](.*?)[/left]","$1

",options);
result=Regex.Replace(result,@"[right](.*?)[/right]","$1

",options);
result=Regex.Replace(result,@"[center](.*?)[/center]","$1

",options);

returnresult;
}

privatestaticstringDecodeQuote(stringubb)
{
stringresult=ubb;

result=Regex.Replace(result,@"[quote]","

",options);
result=Regex.Replace(result,@"[/quote]","

",options);
returnresult;
}

privatestaticstringDecodeFont(stringubb)
{
stringresult=ubb;

result=Regex.Replace(result,@"[size=([-w]+)](.*?)[/size]","$2",options);
result=Regex.Replace(result,@"[font=(.*?)](.*?)[/font]","$2",options);
returnresult;
}

privatestaticstringDecodeLinks(stringubb)
{
stringresult=ubb;

result=Regex.Replace(result,@"[url]www.(.*?)[/url]","$1",options);
result=Regex.Replace(result,@"[url](.*?)[/url]","$1",options);
result=Regex.Replace(result,@"[url=(.*?)](.*?)[/url]","$2",options);
result=Regex.Replace(result,@"[email](.*?)[/email]","$1",options);
returnresult;
}

privatestaticstringDecodeLinksNoFollow(stringubb)
{
stringresult=ubb;

result=Regex.Replace(result,@"[url]www.(.*?)[/url]","$1",options);
result=Regex.Replace(result,@"[url](.*?)[/url]","$1",options);
result=Regex.Replace(result,@"[url=(.*?)](.*?)[/url]","$2",options);
result=Regex.Replace(result,@"[email](.*?)[/email]","$1",options);
returnresult;
}

privatestaticstringDecodeImage(stringubb)
{
stringresult=ubb;

result=Regex.Replace(result,@"[hr]","

",options);
result=Regex.Replace(result,@"[img](.+?)[/img]","",options);
result=Regex.Replace(result,@"[img=(d+)x(d+)](.+?)[/img]","",options);

returnresult;
}

privatestaticstringDecodeColor(stringubb)
{
stringresult=ubb;
result=Regex.Replace(result,@"[color=(#?w+?)](.+?)[/color]","$2",options);

returnresult;
}

privatestaticstringDecodeStyle(stringubb)
{
stringresult=ubb;
//wedon'tneedthisforperfomanceandotherconsideration:
//(]*>(?>]*>(?)|(?<-Depth>)|.)+(?(Depth)(?!)))
result=Regex.Replace(result,@"[[b]](.*?)[/[b]]","$1",options);
result=Regex.Replace(result,@"[[u]](.*?)[/[u]]","$1",options);
result=Regex.Replace(result,@"[[i]](.*?)[/[i]]","$1",options);

returnresult;
}
}
}

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