一个INI类代替缓存

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'Power By Tim
'文件摘要：INI类
'文件版本：3.0 
'文本创建日期：2:17 2004-12-14
'================= 属性说明 ================
'INI.OpenFile = 文件路径（使用虚拟路径需在外部定义）
'INI.CodeSet  = 编码设置，默认为 GB2312
'INI.IsTrue   = 检测文件是否正常（存在）
'================ 方法说明 =================
'IsGroup(组名)            检测组是否存在
'IsNode(组名,节点名)            检测节点是否存在
'GetGroup(组名)            读取组信息
'CountGroup()            统计组数量
'ReadNode(组名,节点名)            读取节点数据
'WriteGroup(组名)            创建组
'WriteNode(组,节点,节点数据)      插入/更新节点数据
'DeleteGroup(组名)            删除组
'DeleteNode(组名,节点名)      删除节点
'Save()                  保存文件
'Close()                  清除内部数据（释放）
'===============================================


Class INI_Class
'===============================================
     Private Stream            '// Stream 对象
     Private FilePath      '// 文件路径
     Public Content            '// 文件数据
     Public IsTrue            '// 文件是否存在
     Public IsAnsi            '// 记录是否二进制
     Public CodeSet            '// 数据编码
'================================================
     
     '// 初始化
     Private Sub Class_Initialize()
           Set Stream      = Server.CreateObject("ADODB.Stream")
           Stream.Mode      = 3
           Stream.Type      = 2
           CodeSet            = "gb2312"
           IsAnsi            = True
           IsTrue            = True
     End Sub
     
     
     '// 二进制流转换为字符串
     Private Function Bytes2bStr(bStr)
           if Lenb(bStr)=0 Then
                 Bytes2bStr = ""
                 Exit Function
           End if
           
           Dim BytesStream,StringReturn
           Set BytesStream = Server.CreateObject("ADODB.Stream")
           With BytesStream
                 .Type        = 2
                 .Open
                 .WriteText   bStr
                 .Position    = 0
                 .Charset     = CodeSet
                 .Position    = 2
                 StringReturn = .ReadText
                 .Close
           End With
           Bytes2bStr       = StringReturn
           Set BytesStream       = Nothing
           Set StringReturn = Nothing
     End Function
     
     
     '// 设置文件路径
     Property Let OpenFile(INIFilePath)
           FilePath = INIFilePath
           Stream.Open
           On Error Resume Next
           Stream.LoadFromFile(FilePath)
           '// 文件不存在时返回给 IsTrue
           if Err.Number<>0 Then
                 IsTrue = False
                 Err.Clear
           End if
           Content = Stream.ReadText(Stream.Size)
           if Not IsAnsi Then Content=Bytes2bStr(Content)
     End Property
     
     
     '// 检测组是否存在[参数:组名]
     Public Function IsGroup(GroupName)
           if Instr(Content,"["&GroupName&"]")>0 Then
                 IsGroup = True
           Else
                 IsGroup = False
           End if
     End Function
     
     
     '// 读取组信息[参数:组名]
     Public Function GetGroup(GroupName)
           Dim TempGroup
           if Not IsGroup(GroupName) Then Exit Function
           '// 开始寻找头部截取
           TempGroup = Mid(Content,Instr(Content,"["&GroupName&"]"),Len(Content))
           '// 剔除尾部
           if Instr(TempGroup,VbCrlf&"[")>0 Then TempGroup=Left(TempGroup,Instr(TempGroup,VbCrlf&"[")-1)
           if Right(TempGroup,1)<>Chr(10) Then TempGroup=TempGroup&VbCrlf
           GetGroup = TempGroup
     End Function
     
     
     '// 检测节点是否存在[参数:组名,节点名]
     Public Function IsNode(GroupName,NodeName)
           if Instr(GetGroup(GroupName),NodeName&"=") Then
                 IsNode = True
           Else
                 IsNode = False
           End if
     End Function
     
     
     '// 创建组[参数:组名]
     Public Sub WriteGroup(GroupName)
           if Not IsGroup(GroupName) And GroupName<>"" Then
                 Content = Content & "[" & GroupName & "]" & VbCrlf
           End if
     End Sub
     
     
     '// 读取节点数据[参数:组名,节点名]
     Public Function ReadNode(GroupName,NodeName)
           if Not IsNode(GroupName,NodeName) Then Exit Function
           Dim TempContent
           '// 取组信息
           TempContent = GetGroup(GroupName)
           '// 取当前节点数据
           TempContent = Right(TempContent,Len(TempContent)-Instr(TempContent,NodeName&"=")+1)
           TempContent = Replace(Left(TempContent,Instr(TempContent,VbCrlf)-1),NodeName&"=","")
           ReadNode = ReplaceData(TempContent,0)
     End Function
     
     
     '// 写入节点数据[参数:组名,节点名,节点数据]
     Public Sub WriteNode(GroupName,NodeName,NodeData)
           '// 组不存在时写入组
           if Not IsGroup(GroupName) Then WriteGroup(GroupName)
           
           '// 寻找位置插入数据
           '/// 获取组
           Dim TempGroup : TempGroup = GetGroup(GroupName)
           
           '/// 在组尾部追加
           Dim NewGroup
           if IsNode(GroupName,NodeName) Then
                 NewGroup = Replace(TempGroup,NodeName&"="&ReplaceData(ReadNode(GroupName,NodeName),1),NodeName&"="&ReplaceData(NodeData,1))
           Else
                 NewGroup = TempGroup & NodeName & "=" & ReplaceData(NodeData,1) & VbCrlf
           End if
           
           Content = Replace(Content,TempGroup,NewGroup)
     End Sub
     
     
     '// 删除组[参数:组名]
     Public Sub DeleteGroup(GroupName)
           Content = Replace(Content,GetGroup(GroupName),"")
     End Sub
     
     
     '// 删除节点[参数:组名,节点名]
     Public Sub DeleteNode(GroupName,NodeName)
           Dim TempGroup
           Dim NewGroup
           TempGroup = GetGroup(GroupName)
           NewGroup = Replace(TempGroup,NodeName&"="&ReadNode(GroupName,NodeName)&VbCrlf,"")
           if Right(NewGroup,1)<>Chr(10) Then NewGroup = NewGroup&VbCrlf
           Content = Replace(Content,TempGroup,NewGroup)
     End Sub
     
     
     '// 替换字符[实参:替换目标,数据流向方向]
     '      字符转换[防止关键符号出错]
     '      [            --->      {(@)}
     '      ]            --->      {(#)}
     '      =            --->      {($)}
     '      回车      --->      {(1310)}
     Public Function ReplaceData(Data_Str,IsIn)
           if IsIn Then
                 ReplaceData = Replace(Replace(Replace(Data_Str,"[","{(@)}"),"]","{(#)}"),"=","{($)}")
                 ReplaceData = Replace(ReplaceData,Chr(13)&Chr(10),"{(1310)}")
           Else
                 ReplaceData = Replace(Replace(Replace(Data_Str,"{(@)}","["),"{(#)}","]"),"{($)}","=")
                 ReplaceData = Replace(ReplaceData,"{(1310)}",Chr(13)&Chr(10))
           End if
     End Function
     
     
     '// 保存文件数据
     Public Sub Save()
           With Stream
                 .Close
                 .Open
                 .WriteText Content
                 .SaveToFile FilePath,2
           End With
     End Sub
     
     
     '// 关闭、释放
     Public Sub Close()
           Set Stream = Nothing
           Set Content = Nothing
     End Sub
     
End Class


Dim INI
Set INI = New INI_Class
INI.OpenFile = Server.MapPath("Config.ini")
'========== 这是写入ini数据 ==========
INI.WriteNode("SiteConfig","SiteName","Leadbbs极速论坛")
INI.WriteNode("SiteConfig","Mail","leadbbs@leadbbs.com")
INI.Save()
'========== 这是读取ini数据 ==========
Response.Write("站点名称："INI.ReadNode("SiteConfig","SiteName"))
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