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Building & Managing Web Sites

FileSystemObject Object

Windows Scripting

• Microsoft Windows Script Host (WSH)

allows running of VBScript and JScriptnatively within the base Operating System.

• Introduced with Win98+, but available for

Windows 95, 98, NT 4, and Win2000operating systems.

• Using scripting languages, can write script

to automate common tasks, and to createpowerful macros and logon scripts.

Windows Scripting Example

On a Windows computer with Windows Script,

create a file in Notepad called “Hello.vbs” withthe following contents, then double-click it to runthe script. Set fs =

CreateObject("

Scripting.FileSystemObject

")

Set a = fs.CreateTextFile("c:\test.txt", True)a.WriteLine(”Hello World.")a.Closeset fs=nothing

ASP and FileSystemObject (FSO)^ •

ASP uses native objects (Response), installablecomponents (Browser Capabilities), & WSHobjects (e.g., FileSystemObject)

-^

The FileSystemObject (FSO) is the “window” toserver’s file system. Allows querying andmanipulation of:^ – text files– folders– drives

-^

FSO often offers many ways to do the same thing

Using FSO in ASP

• FSO has one property - FSO.Drives• Returns a

Drives

collection consisting of all

Drive

objects available on the local machine.

Set fso =

Server.CreateObject("Scripting.FileSystemObject") Set dc =

fso.Drives

For Each d in dc

Response.Write d & “
” Next

Many FSO Properties

-^

BuildPath

-^

CopyFile

-^

CopyFolder

-^

CreateFolder

-^

CreateTextFile

-^

DeleteFile

-^

DeleteFolder

-^

DriveExists

-^

FileExists

-^

FolderExists

-^

GetAbsolutePathName

-^

GetBaseName

-^

GetDrive

-^

GetDriveName

-^

GetExtensionName

-^

GetFile

-^

GetFileName

-^

GetFolder

-^

GetParentFolderName

-^

GetSpecialFolder

-^

GetTempName

-^

MoveFile

-^

MoveFolder

-^

OpenTextFile

GetFolder and Files

• Instantiate the Folder’s file collection to view

the files in the folder.

• Can query each file’s properties like Name,

Size, Path, etc.

sDir = Server.MapPath(".")Set fso =

Server.CreateObject("Scripting.FileSystemObject") Set objFldr = fso.GetFolder(sDir)Set objFileColl = objFldr.FilesFor Each file in objFileColl

response.write file.Name & "
" Next

GetFile Property

• Another way to query a specific files’

properties.

Set fs =

CreateObject("Scripting.FileSystemObject") Set objFile = fs.GetFile("c:\test\test.txt")Response.Write " Name:" & objFile.NameResponse.write " Size:" & objfile.Size & "
"

TextStream Object

• TextStream object allows access to content

of text files

• Manipulations normally done on a line by

line basis using methods like ReadLine,WriteLine, Skip, etc.

• Manipulations can only move the file cursor

forward.

OpenTextFile Method and

TextStream Example

Const ForAppending = 8sDir = Server.MapPath(".") & "\testfile.txt"Set fs =

Server.CreateObject("Scripting.FileSystemObject") Set objFile = fs.OpenTextFile(sDir, ForAppending)objFile.WriteLine(WeekdayName(WeekDay(date())))objFile.Close