Replacing String in a text file

Jibberish · July 20, 2017

Junior Programmer here...

Not much experience with opening, changing and closing files.

I am trying to replace strings in a Text file except StringReplace does not actually replace the text.

Here is a sample of my code...

#include <File.au3>
#include <MsgBoxConstants.au3>
#include <WinAPIFiles.au3>

Local $iStrReturn = 0
Local $hFile
Local $sText
Local $sNewText

; Location of File to be read
$sFileName = "C:\Temp\MyPlayer.exe.config"

; The default is FALSE. We want to change this to TRUE
$bLoopChecked = True

CheckBox()


Func Checkbox()
    $hFile = FileOpen($sFileName,$FO_READ) ; Open file in read mode to get text
    If $hFile = -1 Then
        MsgBox($MB_SYSTEMMODAL, "", "An error occurred when Opening the file.")
        Exit
    EndIf
    FileSetPos($hFile, 0, 0)    ; No idea if I need to do this, grasping at straws
    $sText = FileRead($hFile)   ; Read the file into $sText
    If $sText = 1 Then
        MsgBox($MB_SYSTEMMODAL, "", "An error occurred when reading/writing the file.")
        Exit
    Else
        FileClose($hFile)       ; Finished reading the file into $sText, so close the file.
        FileFlush($hFile)       ; Manual says to use FileFlush between File Close and Open so here it is
    EndIf

    MsgBox(0,"Before Replacement",$sText)   ; Displays the text read from the file to make sure something is there.

    ; Loop Check
    If $bLoopChecked = True Then
        ; Find the string return > 0 for success
        $iStrReturn = StringInStr('"<add key="LoopCheckbox" value=""False" />"', "False")
        ;MsgBox(0,"", "LoopCheckBox is " & $iStrReturn)
        If $iStrReturn > 0 Then     ; If StringInStr returned > 0 the it found the string!
            ; The Meat of the code. This is where we have to replace "False" with "True"
            $sNewText = StringReplace($sText, '"<add key="LoopCheckbox" value="False" />"', '"<add key="LoopCheckbox" value="True" />"')
            MsgBox(0,"After Replacement",$sNewText) ; Display the text to see if it worked.
            $hFile = FileOpen($sFileName,$FO_OVERWRITE) ; Reopen the file to write to it, overwriting everything.
            FileWrite($hFile,$sNewText)                 ; Write the text to the file
            FileClose($hFile)                           ; Close the file
        EndIf
    EndIf
EndFunc

This is the file I am reading...

<?xml version="1.0" encoding="utf-8"?>
<configuration>
  <startup>
    <supportedRuntime version="v4.0" sku=".NETFramework,Version=v4.6"/>
  </startup>
  <appSettings>
    <add key="LoopCheckbox" value="false"/>
  </appSettings>
</configuration>

I tried opening the file with $FO_UTF8 and $FO_UTF8_NOBOM but got errors opening the file.

The MsgBox "After Replacement" shows the value is still false.

JLogan3o13 · July 21, 2017

@Jibberish one of our Regex experts will doubtless wander along and provide something more elegant, but for a simple method this works well for me. For this example my file is sitting on the desktop, change your file path accordingly. Let me know if you have any questions:

#include <File.au3>

Local $aFile, $sText, $sFile = @DesktopDir & "\test.xml"
    _FileReadToArray($sFile, $aFile)

    For $a = 1 To $aFile[0]
        If StringInStr($aFile[$a], '"LoopCheckbox" value="false"') Then
            $sText = StringReplace(FileReadLine($sFile, $a), '="false"', '="true"')
            _FileWriteToLine($sFile, $a, $sText, 1)
        EndIf
    Next

Trong · July 21, 2017

maybe:

Dedug version:

Global $sFile = "C:\Temp\MyPlayer.exe.config"
Global $bLoopChecked = True

Local $sValueTrue = '<add key="LoopCheckbox" value="true"/>'
Local $sValueFalse = '<add key="LoopCheckbox" value="false"/>'

Local $xFileEncoding = FileGetEncoding($sFile), $xContent = FileRead($sFile)
If @error Or Not FileExists($sFile) Then Exit MsgBox(48, "ERROR", "Read file error: " & $sFile)


Local $sCheckTrue = StringInStr($xContent, $sValueTrue)
Local $sCheckFalse = StringInStr($xContent, $sValueFalse)
ConsoleWrite("- Before:" & @CRLF & $xContent & @CRLF)
If $sCheckFalse And Not $bLoopChecked Then
    Exit MsgBox(48, "Set value to: " & $bLoopChecked, "But cureent LoopCheckbox=false")
ElseIf $sCheckTrue And $bLoopChecked Then
    Exit MsgBox(48, "Set value to: " & $bLoopChecked, "But cureent LoopCheckbox=true")
EndIf

If $sCheckFalse And $bLoopChecked Then
    MsgBox(64, "Will Set value to: " & $bLoopChecked, "Cureent LoopCheckbox=false")
    $xContent = StringReplace($xContent, $sValueFalse, $sValueTrue)
;~  ConsoleWrite("-" & @extended & @CRLF)
Else
    MsgBox(64, "Will Set value to: " & $bLoopChecked, "Cureent LoopCheckbox=true")
    $xContent = StringReplace($xContent, $sValueTrue, $sValueFalse)
;~  ConsoleWrite("-" & @extended & @CRLF)
EndIf
Local $hOpen = FileOpen($sFile, 2 + 8 + $xFileEncoding)
FileWrite($hOpen, $xContent)
FileClose($hOpen)

ConsoleWrite("+ After:" & @CRLF & $xContent & @CRLF)

If (StringInStr($xContent, $sValueTrue) And $bLoopChecked) Or (StringInStr($xContent, $sValueFalse) And Not $bLoopChecked) Then
    Exit MsgBox(64, "Set value to: " & $bLoopChecked, "Set value OK")
Else
    Exit MsgBox(48, "Set value to: " & $bLoopChecked, "Set value ERROR")
EndIf

Product version:

Global $sFile = "C:\Temp\MyPlayer.exe.config"
Global $bLoopChecked = True

If _SetLoopChecked($bLoopChecked, $sFile) Then
    MsgBox(64, "Set value to: " & $bLoopChecked, "Set value OK" & @CRLF & "File: " & $sFile)
Else
    MsgBox(48, "Set value to: " & $bLoopChecked, "Set value ERROR" & @CRLF & "File: " & $sFile)
EndIf

Func _SetLoopChecked($iTrue, $sFile = @ProgramFilesDir & "\MyApp\MyPlayer.exe.config")
    Local $xFileEncoding = FileGetEncoding($sFile), $xContent = FileRead($sFile)
    If @error Or Not FileExists($sFile) Then Return SetError(1, 0, 0)
    Local $sValueTrue = '<add key="LoopCheckbox" value="true"/>'
    Local $sValueFalse = '<add key="LoopCheckbox" value="false"/>'
    Local $sCheckTrue = StringInStr($xContent, $sValueTrue)
    Local $sCheckFalse = StringInStr($xContent, $sValueFalse)
    If $sCheckFalse And Not $iTrue Then
        Return SetError(0, 1, 1)
    ElseIf $sCheckTrue And $iTrue Then
        Return SetError(0, 1, 1)
    EndIf
    If $sCheckFalse And $iTrue Then
        $xContent = StringReplace($xContent, $sValueFalse, $sValueTrue)
    Else
        $xContent = StringReplace($xContent, $sValueTrue, $sValueFalse)
    EndIf
    Local $hOpen = FileOpen($sFile, 2 + 8 + $xFileEncoding)
    Local $WOK = FileWrite($hOpen, $xContent)
    FileClose($hOpen)
    If $WOK And ((StringInStr($xContent, $sValueTrue) And $iTrue) Or (StringInStr($xContent, $sValueFalse) And Not $iTrue)) Then Return SetError(0, 0, 1)
    Return SetError(2, 0, 0)
EndFunc   ;==>_SetLoopChecked

Edited July 21, 2017 by Trong
add version

FrancescoDiMuro · July 21, 2017

6 hours ago, JLogan3o13 said:
@Jibberish one of our Regex experts will doubtless wander along and provide something more elegant, but for a simple method this works well for me. For this example my file is sitting on the desktop, change your file path accordingly. Let me know if you have any questions:
#include <File.au3>

Local $aFile, $sText, $sFile = @DesktopDir & "\test.xml"
    _FileReadToArray($sFile, $aFile)

    For $a = 1 To $aFile[0]
        If StringInStr($aFile[$a], '"LoopCheckbox" value="false"') Then
            $sText = StringReplace(FileReadLine($sFile, $a), '="false"', '="true"')
            _FileWriteToLine($sFile, $a, $sText, 1)
        EndIf
    Next

@JLogan3o13

Always the smartest code :bye:

JLogan3o13 · July 21, 2017

Or you could go with @Trong's Rube Goldberg script

Jibberish · July 21, 2017

Wow! The support here is amazing! I'll try all these out and try to understand why these work and mine doesn't. Always learning...!

Cheers,

Jibberish

antonioj84 · January 22, 2018

On 7/20/2017 at 8:40 PM, JLogan3o13 said:
@Jibberish one of our Regex experts will doubtless wander along and provide something more elegant, but for a simple method this works well for me. For this example my file is sitting on the desktop, change your file path accordingly. Let me know if you have any questions:
#include <File.au3>

Local $aFile, $sText, $sFile = @DesktopDir & "\test.xml"
    _FileReadToArray($sFile, $aFile)

    For $a = 1 To $aFile[0]
        If StringInStr($aFile[$a], '"LoopCheckbox" value="false"') Then
            $sText = StringReplace(FileReadLine($sFile, $a), '="false"', '="true"')
            _FileWriteToLine($sFile, $a, $sText, 1)
        EndIf
    Next
about if I just wanted to replace value value=" 10.23.25.16" and the value may not necessarily be value=" 10.23.25.16", it could change

there the idea is to replace anything after value=" "
<?xml version="1.0" encoding="utf-8"?>
<configuration>
  <startup>
    <supportedRuntime version="v4.0" sku=".NETFramework,Version=v4.6"/>
  </startup>
  <appSettings>
    <add key="LoopCheckbox" value="10.23.25.16"/>
  </appSettings>
</configuration

Edited January 22, 2018 by antonioj84
correction

mikell · January 22, 2018

?

$txt = StringRegExpReplace(FileRead("test.xml"), '(?<=LoopCheckbox" value=")[^"]*', "anything")

Msgbox(0,"test", $txt)

antonioj84 · January 22, 2018

<!-- BEGIN connector for Tender Retail -->
        <CONNECTOR name="TenderRetailConnector"
            javaclass="rci.retail.stores.commext.connector.tenderretail.RCITenderRetailConnector">
            <PROPERTY propname="hostname" propvalue="127.1.1.1" />
            <PROPERTY propname="portNumber" propvalue="3858" proptype="INTEGER" />
            <PROPERTY propname="timeout" propvalue="180000" proptype="INTEGER" />
        </CONNECTOR>
        
    </CONNECTORS>

here is my xml pattern, the value i m after to replace is "127.1.1.1"   thanks for your help

2 hours ago, mikell said:

?

$txt = StringRegExpReplace(FileRead("test.xml"), '(?<=LoopCheckbox" value=")[^"]*', "anything")

Msgbox(0,"test", $txt)

Edited January 22, 2018 by antonioj84
error

antonioj84 · January 22, 2018

$sFile = @ScriptDir & '\Manager.xml'
FileSetAttrib($sFile & '\Manager.xml', "-R") ; remove flag make file editable





  _FileReadToArray($sFile, $aFile)
 ;_ArrayDisplay($aFile)

    For $a = 1 To $aFile[0]

        If StringInStr($aFile[$a], '"hostname" propvalue="127.1.1.1"') Then

        $sText = StringReplace(FileReadLine($sFile, $a), '="127.1.1.1"','="127.2.2.2"')
        MsgBox(0,'',$sText)
            _FileWriteToLine($sFile, $a, $sText, 1)
        EndIf
    Next

this current code works, all i need is to be able to replace anything after propvalue="" with another value example 127.2.2.2 thankd

mikell · January 22, 2018

Why didn't you provide the real xml first ? :rolleyes:

$new = "127.2.2.2"

$txt = StringRegExpReplace(FileRead("test.xml"), '(?<=hostname" propvalue=")[^"]*', $new)

Msgbox(0,"test", $txt)

antonioj84 · January 22, 2018

thanks works

AspirinJunkie · January 22, 2018

Because it's an xml-file so why not handle it as an xml-file?:

; load XMLDOM-object
Local $o_XML = ObjCreate("Microsoft.XMLDOM")

; try to load xml from file
If Not $o_XML.load("MyPlayer.exe.config") Then Exit MsgBox(48, "Error", "error when opening file")

; pick node (with XPath-selector) and directly set the new attribute value
$o_XML.SelectSingleNode('//add[@key="LoopCheckbox"]').setAttribute("value", "true")

; write out the xml:
$o_XML.save("Out.config")
ConsoleWrite($o_XML.xml() & @CRLF)

antonioj84 · January 26, 2018

On 1/22/2018 at 8:26 AM, mikell said:
Why didn't you provide the real xml first ?
$new = "127.2.2.2"

$txt = StringRegExpReplace(FileRead("test.xml"), '(?<=hostname" propvalue=")[^"]*', $new)

Msgbox(0,"test", $txt)

if i were to read a second node adding same ip, this does not work below. thanks ahead

$new = "127.2.2.2"


while 1
$txt = StringRegExpReplace(FileRead("test.xml"), '(?<=hostname" propvalue=")[^"]*', $new)

$txt = StringRegExpReplace(FileRead("test.xml"), '(?<=hostname3" propvalue3=")[^"]*', $new)   ; how  do i read next


Msgbox(0,"test", $txt)

if @error = -1 then exitloop

wend

Edited January 26, 2018 by antonioj84
error

mikell · January 26, 2018

Hey, you posted just a part of the xml and asked a partial question, so you got a partial answer
As I said before, post the whole xml with all the replacements to do and you will get a complete answer

antonioj84 · January 26, 2018

#RequireAdmin
  #include<file.au3>
  #include<array.au3>

  local $Jpos = @ScriptDir & "\Jpos.xml", $aFile,$sText
  FileSetAttrib($Jpos, "-R")


  _FileReadToArray($Jpos, $aFile)
 ;_ArrayDisplay($aFile)

    For $a = 1 To $aFile[0]

        If StringInStr($aFile[$a], '"PortName" "String" value="0.0.0.0"') Then

        $sText = StringReplace(FileReadLine($Jpos, $a), '="0.0.0.0"','="127.2.2.2"')
        MsgBox(0,'',$sText)
            _FileWriteToLine($Jpos, $a, $sText, 1)
        EndIf
    Next

the Problem here is what I am trying to do is to change the whole xlm file at the 2 locations anywhere it encounter PortName value=" anything"

<JposEntry logicalName="CashDrawer">
 <prop name="PortName" type="String" value="0.0.0.0"/>
 </JposEntry>

 <JposEntry logicalName="POSPrinter">
 <prop name="PortName" type="String" value="0.0.0.0"/>
 </JposEntry>

Edited January 26, 2018 by antonioj84
error

mikell · January 26, 2018

Hmmm it's different from the previous requirement again ...

$new = "127.2.2.2"

$txt = StringRegExpReplace(FileRead("test.xml"), '(?m)^.*PortName.*value="\K[^"]*', $new)

Msgbox(0,"test", $txt)

antonioj84 · January 27, 2018

14 hours ago, mikell said:
Hmmm it's different from the previous requirement again ...
$new = "127.2.2.2"

$txt = StringRegExpReplace(FileRead("test.xml"), '(?m)^.*PortName.*value="\K[^"]*', $new)

Msgbox(0,"test", $txt)
Thanks

JLogan3o13 · January 27, 2018

@antonioj84 please stop quoting the previous text every...single...response. Just hit reply; we know what we said, and it pads the thread needlessly.

antonioj84 · January 27, 2018

let me share this piece of snippet, the regex look for the ip pattern in the file and replace the ip address. The 1 is the count, if left empty it will change ip until the end of the file

#include <File.au3>
#include <Array.au3>



_ChangeIP("127.1.1.1")

Func _ChangeIP($sNewIPAddress)
    Local $iRet = 0
    Local $sFile = @ScriptDir & '\Manager.xml'
    FileSetAttrib($sFile & '\Manager.xml', "-R") ; remove flag make file editable
    Local $sData = FileRead($sFile)
    Local $hFile = FileOpen($sFile, 2)
    $sData = StringRegExpReplace($sData, '\b(?:[0-9]{1,3}\.){3}[0-9]{1,3}\b', $sNewIPAddress, 1)  ; 2 count change ip twice
    $iRet = @extended
    FileWrite($hFile, $sData)
    FileClose($hFile)
    Return $iRet
EndFunc   ;==>_ChangeIP

Replacing String in a text file

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