Replacing String in a text file

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.

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

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

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:

July 21, 2017

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

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

January 22

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 by antonioj84
correction

January 22

?

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

Msgbox(0,"test", $txt)

January 22

<!-- 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 by antonioj84
error

January 22

$sFile = @ScriptDir & '\Manager.xml'
FileSetAttrib($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

January 22

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)

January 22

thanks works

January 22

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)

January 26

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 by antonioj84
error

January 26

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

January 26

#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 by antonioj84
error

January 26

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)

January 27

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

January 27

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

January 27

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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