asp的ubb函数（推荐）

 function unhtml(content)
unhtml=content
if content <> "" then
unhtml=replace(unhtml,"&","&")
unhtml=replace(unhtml,"<","<")
unhtml=replace(unhtml,">",">")
unhtml=replace(unhtml,chr(34),""")
unhtml=replace(unhtml,chr(13),"<br>")
unhtml=replace(unhtml,chr(32)," ")
'unhtml=ubb(unhtml)
end if
end function

function ubb(content)
dim nowtime,i
ubb=content
nowtime=now()
ubb=convert(ubb,"code")
ubb=convert(ubb,"html")
ubb=convert(ubb,"url")
ubb=convert(ubb,"color")
ubb=convert(ubb,"font")
ubb=convert(ubb,"size")
ubb=convert(ubb,"quote")
ubb=convert(ubb,"email")
ubb=convert(ubb,"img")
ubb=convert(ubb,"swf")

ubb=autourl(ubb)
ubb=replace(ubb,"[b]","<b>",1,-1,1)
ubb=replace(ubb,"[/b]","</b>",1,-1,1)
ubb=replace(ubb,"[i]","<i>",1,-1,1)
ubb=replace(ubb,"[/i]","</i>",1,-1,1)
ubb=replace(ubb,"[u]","<u>",1,-1,1)
ubb=replace(ubb,"[/u]","</u>",1,-1,1)
ubb=replace(ubb,"[blue]","<font color='#000099'>",1,-1,1)
ubb=replace(ubb,"[/blue]","</font>",1,-1,1)
ubb=replace(ubb,"[red]","<font color='#990000'>",1,-1,1)
ubb=replace(ubb,"[/red]","</font>",1,-1,1)
for i=1 to 28
ubb=replace(ubb,"{:em"&i&"}","<img src=emot/emotface/em"&i&".gif></img>",1,6,1)
ubb=replace(ubb,"{:em"&i&"}","",1,-1,1)
next
ubb=replace(ubb,"["&chr(176),"[",1,-1,1)
ubb=replace(ubb,chr(176)&"]","]",1,-1,1)
ubb=replace(ubb,"/"&chr(176),"/",1,-1,1)
' ubb=replace(ubb,"{;em","{:em",1,-1,1)
end function


function convert(ubb,covt)
dim ctext,startubb,endubb,lcovt,text,codetext
ctext=ubb
startubb=1
do while covt="url" or covt="color" or covt="font" or covt="size"
startubb=instr(startubb,ctext,"["&covt&"=",1)
if startubb=0 then exit do
endubb=instr(startubb,ctext,"]",1)
if endubb=0 then exit do
lcovt=covt
startubb=startubb+len(lcovt)+2
text=mid(ctext,startubb,endubb-startubb)
codetext=replace(text,"[","["&chr(176),1,-1,1)
codetext=replace(codetext,"]",chr(176)&"]",1,-1,1)
'codetext=replace(codetext,"{:em","{;em",1,-1,1)
codetext=replace(codetext,"/","/"&chr(176),1,-1,1)
select case covt
case "color"
ctext=replace(ctext,"[color="&text&"]","<font color='"&text&"'>",1,1,1)
ctext=replace(ctext,"[/color]","</font>",1,1,1)
case "font"
ctext=replace(ctext,"[font="&text&"]","<font face='"&text&"'>",1,1,1)
ctext=replace(ctext,"[/font]","</font>",1,1,1)
case "size"
if isnumeric(text) then
if text>6 then text=6
if text<1 then text=1
ctext=replace(ctext,"[size="&text&"]","<font size='"&text&"'>",1,1,1)
ctext=replace(ctext,"[/size]","</font>",1,1,1)
end if
case "url"
ctext=replace(ctext,"[url="&text&"]","<a href='"&codetext&"' target=_blank>",1,1,1)
ctext=replace(ctext,"[/url]","</a>",1,1,1)
case "email"
ctext=replace(ctext,"["&covt&"="&text&"]","<a href=mailto:"&text&">",1,1,1)
ctext=replace(ctext,"[/"&covt&"]","</a>",1,1,1)
end select
loop

startubb=1
do
startubb=instr(startubb,ctext,"["&covt&"]",1)
if startubb=0 then exit do
endubb=instr(startubb,ctext,"[/"&covt&"]",1)
if endubb=0 then exit do
lcovt=covt
startubb=startubb+len(lcovt)+2
text=mid(ctext,startubb,endubb-startubb)
codetext=replace(text,"[","["&chr(176),1,-1,1)
codetext=replace(codetext,"]",chr(176)&"]",1,-1,1)
'codetext=replace(codetext,"{:em","{;em",1,-1,1)
codetext=replace(codetext,"/","/"&chr(176),1,-1,1)
select case covt
case "url"
ctext=replace(ctext,"["&covt&"]"&text,"<a href='"&codetext&"' target=_blank>"&codetext,1,1,1)
ctext=replace(ctext,"<a href='"&codetext&"' target=_blank>"&codetext&"[/"&covt&"]","<a href="&codetext&" target=_blank>"&codetext&"</a>",1,1,1)
case "email"
ctext=replace(ctext,"["&covt&"]","<a href=mailto:"&text&">",1,1,1)
ctext=replace(ctext,"[/"&covt&"]","</a>",1,1,1)
case "html"
codetext=replace(codetext,"<br>",chr(13),1,-1,1)
codetext=replace(codetext," ",chr(32),1,-1,1)
randomize
rid="temp"&int(100000 * rnd)
ctext=replace(ctext,"{html}"&text,"代码片断如下：<textarea id="&rid&" rows=15 style='width:100%' class='bk'>"&codetext,1,1,1)
ctext=replace(ctext,"代码片断如下：<textarea id="&rid&" rows=15 style='width:100%' class='bk'>"&codetext&"{/html}","代码片断如下：<textarea id="&rid&" rows=15 style='width:100%' class='bk'>"&codetext&"</textarea><input onclick=runex('"&rid&"') type=button value=运行此段代码 name=button1 class='tips_bo'> <input onclick=jm_cc('"&rid&"') type=button value=复制到我的剪贴板 name=button2 class='tips_bo'>",1,1,1)
case "img"
ctext=replace(ctext,"[img]"&text,"<a href="&chr(34)&"about:<img src="&codetext&" border=0>"&chr(34)&" target=_blank><img src="&codetext,1,1,1)
ctext=replace(ctext,"[/img]"," vspace=2 hspace=2 border=0 alt=::点击图片在新窗口中打开::></a>",1,1,1)
case "code"
ctext=replace(ctext,"[code]"&text,"以下内容为程序代码<hr noshade>"&codetext,1,1,1)
ctext=replace(ctext,"以下内容为程序代码<hr noshade>"&codetext&"[/code]","以下内容为程序代码<hr noshade>"&codetext&"<hr noshade>",1,1,1)
case "quote"
atext=replace(text,"[img]","",1,-1,1)
atext=replace(atext,"[/img]","",1,-1,1)
atext=replace(atext,"[swf]","",1,-1,1)
atext=replace(atext,"[/swf]","",1,-1,1)
atext=replace(atext,"{html}","",1,-1,1)
atext=replace(atext,"{/html}","",1,-1,1)
' atext=replace(atext,"{:em","{;em",1,-1,1)
atext=splitwords(atext,350)
atext=replace(atext,chr(32)," ",1,-1,1)
ctext=replace(ctext,"[quote]"&text,"<blockquote><hr noshade>"&atext,1,1,1)
ctext=replace(ctext,"<blockquote><hr noshade>"&atext&"[/quote]","<blockquote><hr noshade>"&atext&"<hr noshade></blockquote>",1,1,1)
case "swf"
ctext=replace(ctext,"[swf]"&text,"影片地址:<br>"&text&"<br><object classid='clsid:d27cdb6e-ae6d-11cf-96b8-444553540000' codebase='http://download.macromedia.com/pub/shockwave/cabs/flash/swflash.cab#version=5,0,0,0' width='500' height='500'><param name=movie value='"&codetext&"'><param name=quality value=high><embed src='"&codetext&"' quality=high pluginspage='http://www.macromedia.com/shockwave/download/index.cgi?p1_prod_version=shockwaveflash' type='application/x-shockwave-flash' width='500' height='500'>",1,1,1)
ctext=replace(ctext,"<object classid='clsid:d27cdb6e-ae6d-11cf-96b8-444553540000' codebase='http://download.macromedia.com/pub/shockwave/cabs/flash/swflash.cab#version=5,0,0,0' width='500' height='500'><param name=movie value='"&codetext&"'><param name=quality value=high><embed src='"&codetext&"' quality=high pluginspage='http://www.macromedia.com/shockwave/download/index.cgi?p1_prod_version=shockwaveflash' type='application/x-shockwave-flash' width='500' height='500'>"&"[/swf]","<object classid='clsid:d27cdb6e-ae6d-11cf-96b8-444553540000' codebase='http://download.macromedia.com/pub/shockwave/cabs/flash/swflash.cab#version=5,0,0,0' width='500' height='500'><param name=movie value='"&codetext&"'><param name=quality value=high><embed src='"&codetext&"' quality=high pluginspage='http://www.macromedia.com/shockwave/download/index.cgi?p1_prod_version=shockwaveflash' type='application/x-shockwave-flash' width='500' height='500'>"&"</embed></object>",1,1,1)
end select
loop
convert=ctext
end function