Replacing a line in a file.

[nf67]

Hi,

I was wondering how I can replace a certain line in a file with something else.

I need to change the value listed after something.

The file which I need to modify looks somewhat like this:

This is some text

And another line of text after which the "index" starts:

Value 1 267

Value 2 291

Value 3 778

Value 4 771

Value 5 335

So I could either say "replace the piece of text after "Value X" with " Y" (no idea how to do this), or something which seems easier:

Replace line $ValueNumber + 2 with "Value " & $ValueNumber & " " & $Value

In which the $ValueNumber (to change) and the $Value (to change it to) could be collected through inputs.

Help would be greatly appreciated

[water]

It depends on the size of the file. If it's not too big would use something like:

_FileReadToArray("C:\temp\test.txt",$aArray)
For $x = 1 to $aArray[0]
    If StringLeft($aArray[$x],7) = "Value " & $ValueNumber+2 Then 
      $aArray[$x] = "Value " & $ValueNumber & " " & $Value
      Exitloop
    EndIf
Next
_FileWriteFromArray("C:\temp\test_altered.txt",$aArray)

Edited July 7, 2009 by water

[nf67]

If $aArray[$x] meets condition then change $aArray[$x]

I'm having some problems with this...

If StringInStr($aArray[$x], "Value " & $ValueNumber)  then ...?

Something like this?

[Yashied]

_FileWriteToLine()?

[water]

I modified my post #2

Edited July 7, 2009 by water

[chMan]

Hi,

Do you try StringRegExpReplace function ?

Regards

Ch'Man

[nf67]

Thanks for your help so far guys I have yet to try things out.

[Malkey]

Hi,

I was wondering how I can replace a certain line in a file with something else.

I need to change the value listed after something.

The file which I need to modify looks somewhat like this:

QUOTE

This is some text

And another line of text after which the "index" starts:

Value 1 267

Value 2 291

Value 3 778

Value 4 771

Value 5 335

So I could either say "replace the piece of text after "Value X" with " Y" (no idea how to do this), or something which seems easier:

Replace line $ValueNumber + 2 with "Value " & $ValueNumber & " " & $Value

In which the $ValueNumber (to change) and the $Value (to change it to) could be collected through inputs.

Help would be greatly appreciated

I put your QUOTE example into a file, "Test.txt".

;
   local $sFileName = "C:\Full Path\Desktop\Test.txt"
   local $sFile = FileRead($sFileName)
   
   local $iLineNum = 3
   
  ; Get existing value
   $a = StringRegExp($sFile,"Value " & $iLineNum & " (\d{0,4})",3)
   ConsoleWrite("Existing Value = " & $a[0] & @CRLF & @CRLF)
   
   
  ;Replace with new value
   local $iNewValue = 101
   
   local $sUpdatedFile = StringRegExpReplace($sFile,"(Value " & $iLineNum & ") (\d{0,4})","\1 " & $iNewValue)
   ConsoleWrite($sUpdatedFile  & @CRLF)
   
   local $file = FileOpen($sFileName,2)
   FileWrite($file,$sUpdatedFile)
   FileClose($file)
  ;

[nf67]

@Malkey

$a = StringRegExp($sFile,"Value " & $iLineNum & " (\d{0,4})",3)

What does it mean?

I currently have this code:

;VPP = ValueNumber
;Value = Value
;LineNumber = LineNumber

#include <EditConstants.au3>
#include <GUIConstantsEx.au3>
#include <WindowsConstants.au3>
#Include <File.au3>


$GUI = GUICreate("VPPC", 136, 22, 192, 124)
$VPPinput = GUICtrlCreateInput("VPP #", 0, 0, 50, 21)
$ValueInput = GUICtrlCreateInput("Value", 55, 0, 80, 21)
GUISetState(@SW_SHOW)
HotKeySet("{ENTER}", "GoCheck")

While 1
    $nMsg = GUIGetMsg()
    Switch $nMsg
        Case $GUI_EVENT_CLOSE
            Exit
    EndSwitch
WEnd

Func GoCheck()
    If WinActive("VPPC") Then
    Call("Go")
    EndIf
EndFunc

Func Go()
    $VPP = GUICtrlRead($VPPinput)
    $Value = GUICtrlRead($ValueInput)
    $LineNumber = $VPP + 2
    _FileWriteToLine(@ScriptDir & "\VehiclesParam.tsc", $LineNumber, "VehiclePP "& $VPP & " " & $Value, 1)
EndFunc

The above code does the trick, but only once, while there are actually multiple values (with the same number) that need to be changed.

This only changes the 1st one...

Thanks for your help :-)

Edited July 7, 2009 by nf67