如何在ASP中使用类

VBScript5中增加了许多新功能，最振奋人心的当属类和正则表达式的出现。以下是本人写的一个解析html代码的类。我是学php的，语法有不习惯的地方，请大家多包含。

<%
Class HTMLParse

    ' 设置 Initialize 事件。
    Private Sub Class_Initialize
        myGlobal = True
        myIgnoreCase = True
    End Sub

    Property Let Global(g)
    Dim regEx            ' 建立变量。
  Set regEx = New RegExp         ' 建立正则表达式。
  regEx.Pattern = "True|False|1|0"         ' 设置模式。
  regEx.IgnoreCase = True         ' 设置是否区分大小写。
  If regEx.Test(CStr(g)) Then
        myGlobal = g
    Else
        Call Halt("无效Global参数配置")
    End If
    End Property

    Property Get Global()
        Global = myGlobal
    End Property

    Property Let IgnoreCase(c)
    Dim regEx
  Set regEx = New RegExp
  regEx.Pattern = "True|False|1|0"
  regEx.IgnoreCase = True
  If regEx.Test(CStr(c)) Then
        myIgnoreCase = c
    Else
        Call Halt("无效IgnoreCase参数配置")
    End If
    End Property

    Property Get IgnoreCase()
        IgnoreCase = myIgnoreCase
    End Property

    '解析所有HTML标记的函数
    Public Function Parse(input)
        Parse = "<table border=1 width=50% align=center>" & vbCrLf
        Dim regEx , regVal , match , i

        Set regEx = New RegExp
        regEx.Pattern = "<([a-z]\w*)(?:.*?)>(.*)<\/\1>"
        regEx.Global = myGlobal
        regEx.IgnoreCase = myIgnoreCase

        Set regVal = regEx.Execute(Trim(input))
        If regVal.Count > 0 Then '如果发现匹配元素
            Parse = Parse & "<caption>发现" & regVal.Count & "个HTML标记</caption>" & vbCrLf
            Parse = Parse & "<tr align=center><th>编号</th><th>匹配标记<th>匹配显示</th></tr>" & vbCrLf
        For i=0 To regVal.Count-1
            Set match = regVal(i)
            Parse = Parse & "<tr align=center>" & vbCrLf
            Parse = Parse & "<td>" & i+1 & "</td><td>" & match.SubMatches(0) & "</td><td>" & match & "</td>" & vbCrLf
            Parse = Parse & "</tr>" & vbCrLf
        Next
        Else Parse = Parse & "<caption>没有发现HTML标记</caption>" & vbCrLf
        End If
        Parse = Parse & "</table>" & vbCrLf
    End Function

    '解析指定HTML标记的函数
    Public Function ParseTag(input,tag)
        ParseTag = "<table border=1 width=50% align=center>" & vbCrLf
        Dim regEx , regVal , match , i

        Set regEx = New RegExp
        regEx.Pattern = "<(" & tag & ")(?:.*?)>(.*?)<\/\1>"
        regEx.Global = myGlobal
        regEx.IgnoreCase = myIgnoreCase

        Set regVal = regEx.Execute(Trim(input))
        If regVal.Count > 0 Then '如果发现匹配元素
            ParseTag = ParseTag & "<caption>发现" & regVal.Count & "个" & UCase(tag) & "标记</caption>" & vbCrLf
            ParseTag = ParseTag & "<tr align=center><th>编号</th><th>发现位置<th>包含内容</th></tr>" & vbCrLf
        For i=0 To regVal.Count-1
            Set match = regVal(i)
            ParseTag = ParseTag & "<tr align=center>" & vbCrLf
            ParseTag = ParseTag & "<td>" & i+1 & "</td><td>" & match.FirstIndex & "</td><td>" & match.SubMatches(1) & "</td>" & vbCrLf
            ParseTag = ParseTag & "</tr>" & vbCrLf
        Next
        Else ParseTag = ParseTag & "<caption>没有发现" & UCase(tag) & "标记</caption>" & vbCrLf
        End If
        ParseTag = ParseTag & "</table>" & vbCrLf
    End Function

    '打印错误
    Private Sub Halt(errstr)
        Response.Write("<font color=red size=3>" & errstr & "</font>" & vbCrLf)
        Call Class_Terminate
    End Sub

    Private Sub Class_Terminate   ' 设置 Terminate 事件。
    End Sub

    '定义两个内部变量
    Private myGlobal
    Private myIgnoreCase

End Class
%>

<html>
<body>
<div align=center><h2>范例1</h2></div>
<%
'范例1
Dim input , result
input = "<i>这是</i>一个<font color=green>VBScript</font>的<b>正则<i>表达式</i>范例</b>。"

Set hp = New HTMLParse
hp.Global = 1
hp.IgnoreCase = False
result = hp.Parse(input)
Response.Write(result)
%>

<br>
<div align=center><h2>范例2</h2></div>
<%
'范例2
'hp.Global = 1
'hp.IgnoreCase = False
result2 = hp.ParseTag(input,"i")
Response.Write(result2)
Set hp = Nothing
%>

</body>
</html>

大家应该注意到了，VBScript的正则表达式和Jscript的解析是一样的，只是语法不同。关于最新的VBScript的文档，大家可以到微软中国的脚本技术主页去下载，网址：http://www.microsoft.com/china/scripting