on Friday, July 9, 2010

In the Checking structure of created folders example I used a text file as a source, containing manually prepared folder names to check for. Today I want to show how file/folder structure could be captured automatically.


Data Record Declaration


For this example, data will be stored in Dictionary object serving as a dynamic array of records.
Sample file information record:




Class FileInfo
'full path
Public FullPath
'"FILE" / "FOLDER"
Public FileType
'file size to check
Public FileSize
End Class



Map Folder Structure and Store it in Dictionary


This is a main function. It performs basic verification and initiates the chain of folder mapping calls.




Public Function MapStructure(ByVal sParentFolder, ByVal sSubFolder, ByRef objDataRecord)
Dim objFSO

'
Set objFSO = CreateObject("Scripting.FileSystemObject")

boolRC = objFSO.FolderExists(sParentFolder & "" & sSubFolder)
If Not boolRC Then
    Set objFSO = Nothing
    MapStructure = False
    Exit Function
End If

Set objFSO = Nothing

Set objDataRecord= CreateObject("Scripting.Dictionary")

Call MapFolder(sParentFolder & "" & sSubFolder, objDataRecord)

MapStructure = True

End Function

Recursively Map Folder Contents


Any folder can contain files and other folders. For that reason, I will use a recursive calls approach.




Private Function MapFolder(ByVal sTargetFolder, ByRef objDictionary)
Dim FSO, objFolder, objChild
Dim objFI

Set FSO = CreateObject("Scripting.FileSystemObject")

Set objFolder = FSO.GetFolder(sTargetFolder)

'write about itself
Set objFI= New FileInfo
objFI.FileType = "FOLDER"
objFI.FullPath = objFolder.Path
objFI.FileSize = 0
Call objDictionary.Add(objDictionary.Count + 1, objFSR)

'write about child files
For Each objChild In objFolder.Files
    Call objDictionary.Add(objDictionary.Count + 1, MapFile(objChild))
Next

'Call recursively to write about subfolders
For Each objChild In objFolder.SubFolders
    Call MapFolder(objChild.Path, objDictionary)
Next

Set FSO = Nothing

End Function



Map Single File Information


For this example, file path and file size are captured.



Private Function MapFile(ByRef objFile)
Dim objFI

Set objFI= New FileInfo
objFI.FileType = "FILE"
objFI.FullPath = objFile.Path
objFI.FileSize = objFile.Size

Set XCC_MapFile= objFI

End Function