如何把URL和邮件地址自动转换为超级链接?
来源:asp之家 时间:2009-11-02 20:22:00
我们可用正规表达式来寻找并替换URL和邮件地址为活动的超级链接。
用到的主要函数就是InsertHyperlinks(inText),语法为:
InsertHyperlinks(inText)
返回值: inText = "<a href="URL" target="_BLANK">URL</a>"
插入(存储)找到的URL和邮件地址。它对URL的判断是以www或http标志开头,对邮件地址的判断是含有@符,够酷吧?
好了,看看这个函数的用法:
Function InsertHyperlinks(inText)
Dim objRegExp, strBuf
Dim objMatches, objMatch
Dim Value, ReplaceValue, iStart, iEnd
strBuf = ""
iStart = 1
iEnd = 1
Set objRegExp = New RegExp
objRegExp.Pattern = "\b(www|http|\S+@)\S+\b"
' 判断URLs和emails的正则表达式
objRegExp.IgnoreCase = True
' 设置大小写不敏感.
objRegExp.Global = True
' 全局适用.
Set objMatches = objRegExp.Execute(inText)
For Each objMatch in objMatches
iEnd = objMatch.FirstIndex
strBuf = strBuf & Mid(inText, iStart, iEnd-iStart+1)
If InStr(1, objMatch.Value, "@") Then
strBuf = strBuf & GetHref(objMatch.Value, "EMAIL", "_BLANK")
Else
strBuf = strBuf & GetHref(objMatch.Value, "WEB", "_BLANK")
End If
iStart = iEnd+objMatch.Length+1
Next
strBuf = strBuf & Mid(inText, iStart)
InsertHyperlinks = strBuf
End Function
Function GetHref(url, urlType, Target)
Dim strBuf
strBuf = "<a href="""
If UCase(urlType) = "WEB" Then
If LCase(Left(url, 3)) = "www" Then
strBuf = "<a href=""URL:" & url & """超级链接:""" & _
Target & """>" & url & "</a>"
Else
strBuf = "<a href=""" & url & """超级链接:""" & _
Target & """>" & url & "</a>"
End If
ElseIf UCase(urlType) = "EMAIL" Then
strBuf = "<a href=""电子邮件地址:" & url & """链接目标:""" & _
Target & """>" & url & "</a>"
End If
GetHref = strBuf
End Function