The INI class used in lieu of caching

The idea of this class is original from the DLL, I have now written to the third version of the

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''================================================================
' = Power by Tim =
''=--------------------------------------------------------------=
' = File Summary: INI class =
''=--------------------------------------------------------------=
' = File version: 3.0 =
' = text creation Date: 2:17 2004-12-14 =
''================================================================
' ============================= Property Description =========================
' = INI. OpenFile = File path (need to be defined externally using virtual path) =
' = INI. CodeSet = encoding setting, defaults to GB2312 =
' = INI. IsTrue = Detect whether the file is normal (exists) =
"============================= Method Description =========================
' = Isgroup (group name) detection Group exists =
' = Isnode (group name, node naming) detects whether the nodes exist =
' = Getgroup (group name) reads Group information =
"= Countgroup () number of statistics group =
' = ReadNode (group name, node naming) Read nodes data =
' = Writegroup (group name) to create group =
' = WriteNode (Group, node, node data) Insert/update node data =
' = DeleteGroup (group name) Delete Group =
' = Deletenode (group name, node naming) Delete nodes =
' = Save () file =
' = Close () Clears internal data (release) =
''================================================================

Class Ini_class
''==================================================
Private Stream '//Stream object
Private FilePath '//file path

Public Content '//File data
Public IsTrue '//file exists
Public Isansi '//records are binary
Public CodeSet '//Data encoding
''==================================================

'//initialization
Private Sub Class_Initialize ()
Set Stream = Server.CreateObject ("ADODB.") Stream ")
Stream.mode = 3
Stream.type = 2
CodeSet = "gb2312"
Isansi = True
IsTrue = True
End Sub

'//binary stream converted to string
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

'//Set file path
Property Let OpenFile (IniFilePath)
FilePath = IniFilePath
Stream.open
On Error Resume Next
Stream.loadfromfile (FilePath)
'//File not present, return to 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

'//detection group presence [parameters: Group name]
Public Function Isgroup (groupname)
If Instr (Content, "[" &GroupName& "]") >0 Then
Isgroup = True
Else
Isgroup = False
End If
End Function

'//Read group information [parameters: Group name]
Public Function Getgroup (groupname)
Dim Tempgroup
If not Isgroup (groupname) Then Exit Function
"//start looking for head intercept
Tempgroup = Mid (content,instr (content, [&GroupName&]), Len (content))
'//Remove tail
If Instr (tempgroup,vbcrlf& "[") >0 Then tempgroup=left (Tempgroup,instr (tempgroup,vbcrlf& "[")-1)
If Right (tempgroup,1) &LT;&GT;CHR Then Tempgroup=tempgroup&vbcrlf
Getgroup = Tempgroup
End Function

'//Detect if node exists [parameters: Group name, section names]
Public Function Isnode (groupname,nodename)
If Instr (Getgroup (groupname),nodename& "=") Then
Isnode = True
Else
Isnode = False
End If
End Function

'//create Group [parameters: Group name]
Public Sub Writegroup (groupname)
If not Isgroup (groupname) and groupname<> "" Then
Content = content & "[" & GroupName & "]" & VBCRLF
End If
End Sub

'//Read node data [parameters: Group name, section Roll Call]
Public Function ReadNode (groupname,nodename)
If not Isnode (groupname,nodename) Then Exit Function
Dim tempcontent
'//FETCH group information
Tempcontent = Getgroup (groupname)
'//Fetch current node data
Tempcontent = Right (Tempcontent,len (tempcontent)-instr (tempcontent,nodename& "=") +1)
Tempcontent = Replace (Left (TEMPCONTENT,INSTR (TEMPCONTENT,VBCRLF)-1),nodename& "=", "")
ReadNode = ReplaceData (tempcontent,0)
End Function

'//write node data [parameters: Group name, node name, node data]
Public Sub WriteNode (groupname,nodename,nodedata)
Write to group if no group exists
If not Isgroup (groupname) Then Writegroup (groupname)

'/Find position insert data
'///get Group
Dim Tempgroup:tempgroup = Getgroup (groupname)

"///in Group tail append
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

'//delete Group [parameters: Group name]
Public Sub DeleteGroup (groupname)
Content = Replace (Content,getgroup (groupname), "")
End Sub

'//delete node [parameters: Group name, section Roll Call]
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 Then newgroup = Newgroup&vbcrlf
Content = Replace (Content,tempgroup,newgroup)
End Sub

'//substitution character [argument: replace target, data flow direction]
' character conversion [prevent key symbol errors]
' [---> {(@)}
']---> {(#)}
' =---> {($)}
' Carriage return---> {(1310)}
Public Function ReplaceData (data_str,isin)
If IsIn Then
ReplaceData = replace (replace (DATA_STR, "[", "{(@)}"), "]", "{(#)}"), "=", "{($)}")
ReplaceData = Replace (REPLACEDATA,CHR) &AMP;CHR (10), "{(1310)}")
Else
ReplaceData = replace (replace (Data_str, "{(@)}", "["), "{(#)}", "]"), "{($)}", "=")
ReplaceData = Replace (ReplaceData, "{(1310)}", Chr &AMP;CHR (10))
End If
End Function

'//Save file data
Public Sub Save ()
With Stream
. Close
. Open
. WRITETEXT Content
. SaveToFile filepath,2
End With
End Sub

'//Close, release
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")
'//========== This is to write INI data ==========
Ini. WriteNode ("SiteConfig", "SiteName", "Leadbbs Speed Forum")
Ini. WriteNode ("SiteConfig", "Mail", "leadbbs@leadbbs.com")
Ini. Save ()
'//========== This is read INI data ==========
Response.Write ("Site name:" INI.) ReadNode ("SiteConfig", "SiteName"))
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