Solved

How to open a file, look for a line and replace/add text via a script?

Posted on 2008-10-28
4
279 Views
Last Modified: 2012-05-05
How would you recemend that I could open a file (Test1.log) and search for a line of text then pass data to that line via a script?  I have attached the file and the line I would like to edit.  I would like to be able to pass 123456789 as the value between the "", then save it (ex "123456789" />)
Before
<add key="websvc.PAD.ip"                      value= "" />

After
<add key="websvc.PAD.ip"                      value= "123456789" />

Please help...
Test1.log
0
Comment
Question by:John_2000
  • 2
  • 2
4 Comments
 
LVL 38

Expert Comment

by:Shift-3
ID: 22823955
Paste the script below into a text file with a .vbs extension.  Customize the value of the strFile variable with the location of the log file.  Running the script will replace any instances of the original string with the new one.


Const ForReading = 1
Const ForWriting = 2
Const TriStateUseDefault = -2
 
strFile = "c:\test1.log"
strOldString = "<add key=" & Chr(34) & "websvc.PAD.ip" & Chr(34) & "	    		value= " & Chr(34) & Chr(34) & " />"
strNewString = "<add key=" & Chr(34) & "websvc.PAD.ip" & Chr(34) & "	    		value= " & Chr(34) & "123456789" & Chr(34) & " />"
 
Set objFSO = CreateObject("Scripting.FileSystemObject")
Set objTextFile = objFSO.OpenTextFile(strFile, ForReading, False, TriStateUseDefault)
 
strText = objTextFile.ReadAll
strText = Replace(strText, strOldString, strNewString)
objTextFile.Close
 
Set objTextFile = objFSO.OpenTextFile(strFile, ForWriting)
 
objTextFile.Write strText
objTextFile.Close

Open in new window

0
 

Author Comment

by:John_2000
ID: 22825441
That works great!  But one more thing.....If there was a value already between the quotes, it will not update.  Would it be easy adjust this code to reflect that?
0
 
LVL 38

Accepted Solution

by:
Shift-3 earned 300 total points
ID: 22825883
This version will replace any line containing <add key="websvc.PAD.ip" with the new line.

It was adapted from http://www.microsoft.com/technet/scriptcenter/resources/qanda/nov04/hey1130.mspx


Const ForReading = 1
Const ForWriting = 2
Const TriStateUseDefault = -2
 
strFile = "c:\test1.log"
strOldString = "<add key=" & Chr(34) & "websvc.PAD.ip" & Chr(34)
strNewString = vbTab & vbTab & "<add key=" & Chr(34) & "websvc.PAD.ip" & Chr(34) & "                    value= " & Chr(34) & "123456789" & Chr(34) & " />"
 
Set objFSO = CreateObject("Scripting.FileSystemObject")
Set objTextFile = objFSO.OpenTextFile(strFile, ForReading, False, TriStateUseDefault)
 
Do Until objTextFile.AtEndOfStream
    strNextLine = objTextFile.Readline
 
    intLineFinder = InStr(strNextLine, strOldString)
    If intLineFinder <> 0 Then
        strNextLine = strNewString
    End If
 
    strNewFile = strNewFile & strNextLine & vbCrLf
Loop
 
objTextFile.Close
 
Set objTextFile = objFSO.OpenTextFile(strFile, ForWriting)
 
objTextFile.WriteLine strNewFile
objTextFile.Close

Open in new window

0
 

Author Closing Comment

by:John_2000
ID: 31510822
Nice Job!
0

Featured Post

DevOps Toolchain Recommendations

Read this Gartner Research Note and discover how your IT organization can automate and optimize DevOps processes using a toolchain architecture.

Question has a verified solution.

If you are experiencing a similar issue, please ask a related question

Suggested Solutions

Introduction During my participation as a VBScript contributor at Experts Exchange, one of the most common questions I come across is this: "I have a script that runs against only one computer. How can I make it run against a list of computers in …
Introduction: Recently, I got a requirement to zip all files individually with batch file script in Windows OS. I don't know much about scripting, but I searched Google and found a lot of examples and websites to complete my task. Finally, I was ab…
Nobody understands Phishing better than an anti-spam company. That’s why we are providing Phishing Awareness Training to our customers. According to a report by Verizon, only 3% of targeted users report malicious emails to management. With compan…
Finds all prime numbers in a range requested and places them in a public primes() array. I've demostrated a template size of 30 (2 * 3 * 5) but larger templates can be built such 210  (2 * 3 * 5 * 7) or 2310  (2 * 3 * 5 * 7 * 11). The larger templa…

822 members asked questions and received personalized solutions in the past 7 days.

Join the community of 500,000 technology professionals and ask your questions.

Join & Ask a Question