function.asp

这是一个非常好的留言版程序

<%
Function CheckStr(byVal ChkStr) 
	Dim Str:Str=ChkStr
	Str=Trim(Str)
	If IsNull(Str) Then
		CheckStr = ""
		Exit Function 
	End If
	Dim re
	Set re=new RegExp
	re.IgnoreCase =True
	re.Global=True
	re.Pattern="(\r\n){3,}"
	Str=re.Replace(Str,"$1$1$1")
	Set re=Nothing
	Str = Replace(Str,"'","''")
	Str = Replace(Str, "select", "sel&#101;ct")
	Str = Replace(Str, "join", "jo&#105;n")
	Str = Replace(Str, "union", "un&#105;on")
	Str = Replace(Str, "where", "wh&#101;re")
	Str = Replace(Str, "insert", "ins&#101;rt")
	Str = Replace(Str, "delete", "del&#101;te")
	Str = Replace(Str, "update", "up&#100;ate")
	Str = Replace(Str, "like", "lik&#101;")
	Str = Replace(Str, "drop", "dro&#112;")
	Str = Replace(Str, "create", "cr&#101;ate")
	Str = Replace(Str, "modify", "mod&#105;fy")
	Str = Replace(Str, "rename", "ren&#097;me")
	Str = Replace(Str, "alter", "alt&#101;r")
	Str = Replace(Str, "cast", "ca&#115;t")
	CheckStr=Str
End Function

Function UnCheckStr(Str)
		Str = Replace(Str, "sel&#101;ct", "select")
		Str = Replace(Str, "jo&#105;n", "join")
		Str = Replace(Str, "un&#105;on", "union")
		Str = Replace(Str, "wh&#101;re", "where")
		Str = Replace(Str, "ins&#101;rt", "insert")
		Str = Replace(Str, "del&#101;te", "delete")
		Str = Replace(Str, "up&#100;ate", "update")
		Str = Replace(Str, "lik&#101;", "like")
		Str = Replace(Str, "dro&#112;", "drop")
		Str = Replace(Str, "cr&#101;ate", "create")
		Str = Replace(Str, "mod&#105;fy", "modify")
		Str = Replace(Str, "ren&#097;me", "rename")
		Str = Replace(Str, "alt&#101;r", "alter")
		Str = Replace(Str, "ca&#115;t", "cast")
		UnCheckStr=Str
End Function

Function HTMLEncode(reString) '转换HTML代码
	Dim Str:Str=reString
	If Not IsNull(Str) Then
		Str = UnCheckStr(Str)
		Str = Replace(Str, "&", "&amp;")
		Str = Replace(Str, ">", "&gt;")
		Str = Replace(Str, "<", "&lt;")
		Str = Replace(Str, CHR(32), "&nbsp;")
		Str = Replace(Str, CHR(9), "&nbsp;&nbsp;&nbsp;&nbsp;")
		Str = Replace(Str, CHR(9), "&#160;&#160;&#160;&#160;")
		Str = Replace(Str, CHR(34),"&quot;")
		Str = Replace(Str, CHR(39),"&#39;")
		Str = Replace(Str, CHR(13), "")
		Str = Replace(Str, CHR(10), "<br>")
		HTMLEncode = Str
	End If
End Function

Function cutStr(str,strlen)
Dim re
Set re=new RegExp
re.IgnoreCase =True
re.Global=True
re.Pattern="<(.[^>]*)>"
str=re.Replace(str,"") 
set re=Nothing
Dim l,t,c,i
l=Len(str)
t=0
For i=1 to l
c=Abs(Asc(Mid(str,i,1)))
If c>255 Then
t=t+2
Else
t=t+1
End If
If t>=strlen Then
cutStr=left(str,i)&"..."
Exit For
Else
cutStr=str
End If
Next
cutStr=Replace(cutStr,chr(10),"")
cutStr=Replace(cutStr,chr(13),"")
cutStr=Replace(cutStr,chr(32),"")
End Function
%>