Reading and Writing Text Files
https://technet.microsoft.com/en-us/library/ee198716.aspx
Creating Text Files
Set objFSO = CreateObject("Scripting.FileSystemObject")
Set objFile = objFSO.CreateTextFile("C:\FSO\ScriptLog.txt")Listing 4.33 Creating a File Name
Set objFSO = CreateObject("Scripting.FileSystemObject")
For i = 1 to 10
strTempFile = objFSO.GetTempName
Wscript.Echo strTempFile
Nextrad646E9.tmp radEC50C.tmp rad0C40A.tmp radE866E.tmp rad77F3D.tmp rad19970.tmp rad7A21A.tmp radB9DDC.tmp rad84930.tmp
rad92199.tmp
Listing 4.34 Creating and Naming a Text File
Set objFSO = CreateObject("Scripting.FileSystemObject")
strPath = "C:\FSO"
strFileName = objFSO.GetTempName
strFullName = objFSO.BuildPath(strPath, strFileName)
Set objFile = objFSO.CreateTextFile(strFullName) objFile.Close
For reading (parameter value = 1, constant = ForReading). Files opened in this mode can only be read from. To write to the file, you must open it a second time by using either the ForWriting or ForAppending mode.
For writing (parameter value 2, constant = ForWriting). Files opened in this mode will have new data replace any existing data. (That is, existing data will be deleted and the new data added.) Use this method to replace an existing file with a new set of data.
For appending (parameter value 8, constant = ForAppending). Files opened in this mode will have new data appended to the end of the file. Use this method to add data to an existing file.
Const ForReading = 1 Set objFSO = CreateObject("Scripting.FileSystemObject") Set objFile = objFSO.OpenTextFile("C:\FSO\ScriptLog.txt", ForReading) Set objFile2 = objFSO.OpenTextFile("C:\FSO\ScriptLog2.txt", 1)
Set objFSO = CreateObject("Scripting.FileSystemObject")
Set objFile = objFSO.OpenTextFile("C:\FSO\ScriptLog.txt", ForReading)Listing 4.35 Opening a Text File for Reading
Const ForReading = 1
Set objFSO = CreateObject("Scripting.FileSystemObject")
Set objFile = objFSO.OpenTextFile("C:\FSO\ScriptLog.txt", ForReading)Closing Text Files
Delete the file. As noted previously in this chapter, you might occasionally write scripts that create a temporary file, use that file for some purpose, and then delete the file before the script terminates. If you attempt to delete an open file, however, you will encounter an "Access denied" error because the operating system will not allow you to delete an open file.
Reread the file. There might be times when you need to read the same file multiple times within a script. For example, you might open a text file, save the entire contents of the file to a string variable, and then search that string for the existence of a particular error code. If the code is found, you might then read the file on a line-by-line basis, extracting each line where the error was recorded.
Set objFSO = CreateObject("Scripting.FileSystemObject")
Set objFSO = CreateObject("Scripting.FileSystemObject")
Set objFile = objFSO.OpenTextFile("C:\FSO\ScriptLog.txt", 1)
Wscript.Echo "Reading file the first time:"
strContents = objFile.ReadAll
Wscript.Echo strContents
Wscript.Echo "Reading file the second time:"
Do While objFile.AtEndOfStream = False
strLine = objFile.ReadLine
Wscript.Echo strLine
LoopReading file the first time: File line 1. File line 2. File line 3. Reading file the second time:
Listing 4.36 Opening and Closing a Text File
Set objFSO = CreateObject("Scripting.FileSystemObject")
Set objFile = objFSO.OpenTextFile("C:\FSO\ScriptLog.txt", 1)
objFile.Close
