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Hex String - Wildcard replace?

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Hello folks,

I am new to this so please be patient. I have a file, that I need to replace a simple hex string with another hex string. The first part of the string is constant, and the last character is also constant. Everything inbetween is wild. In text it would be "EmailAdress=**********,". I have tried the Funtion "_ReplaceStringInFile.". Works well if you know exactly what to replace, but it does not handle wild cards, from what I can tell. I have also researched the StringRegExpReplace function. This neither seems to fit. Any help would be much appreciated.

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#2 ·  Posted (edited)

Hello folks,

I am new to this so please be patient. I have a file, that I need to replace a simple hex string with another hex string. The first part of the string is constant, and the last character is also constant. Everything inbetween is wild. In text it would be "EmailAdress=**********,". I have tried the Funtion "_ReplaceStringInFile.". Works well if you know exactly what to replace, but it does not handle wild cards, from what I can tell. I have also researched the StringRegExpReplace function. This neither seems to fit. Any help would be much appreciated.

$String = StringReplaceBetween("abcdabcdabcd","abcd","abcd","New")
MsgBox(0,"Between(abcd,abcd)",$String)
$String = StringReplaceBetween("abcdabcdabcd","a","c","New")
MsgBox(0,"Between(a,c)",$String)
$String = StringReplaceBetween("abcdabcdabcd","a","b","New")
MsgBox(0,"Between(a,b)",$String)
$String = StringReplaceBetween("aabcdabcdabcd","a","a","New")
MsgBox(0,"(aabcdabcdabcd) Between(a,a)",$String)
$String = StringReplaceBetween("abcdabcdabcd","ab","c","New")
MsgBox(0,"Between(ab,c)",$String)
$String = StringReplaceBetween("abcdabcdabcd","b","cd","New")
MsgBox(0,"Between(b,cd)",$String)

Func StringReplaceBetween($String,$beginString,$EndString,$Replacestring)
$CharA = StringUpper(StringLeft($beginString,1))
$CharB = StringUpper(StringLeft($EndString,1))
$Lena = StringLen($String)
$LenB = StringLen($beginString)
$LenC = StringLen($EndString)
$ibeginString = StringUpper($beginString)
$iEndString = StringUpper($EndString)
Local $i = 1
While ($i <= $Lena)
$CharC = StringUpper(StringMid($String,$i,1))
if ($CharA == $CharC) Then
$TextA = StringUpper(StringMid($String,$i,$LenB))
If ($TextA == $ibeginString) Then
Local $j = $i + $LenB - 1
While ($j <= $Lena)
$CharD = StringUpper(StringMid($String,$j,1))
if ($CharB == $CharD) Then
$TextB = StringUpper(StringMid($String,$j,$LenC))
if ($TextB == $iEndString) Then
if ($i = $j And $LenB = 1) Then
$iCharA = StringUpper(StringMid($String,$j,1))
$iCharB = StringUpper(StringMid($String,$j + 1,1))
if ($iCharA <> $iCharB) Then ExitLoop
$TextC = StringMid($String,1,$i - 1)
$TextD = StringMid($String,$j + 1 + $LenC,$Lena)
$String = $TextC & $Replacestring & $TextD
$Lena = StringLen($String)
$i = StringLen($TextC & $Replacestring)
ExitLoop
EndIf
$TextC = StringMid($String,1,$i - 1)
$TextD = StringMid($String,$j + $LenC,$Lena)
$String = $TextC & $Replacestring & $TextD
$Lena = StringLen($String)
$i = StringLen($TextC & $Replacestring)
EndIf
ExitLoop
EndIf
$j += 1
WEnd
Else
ExitLoop
EndIf
EndIf
$i += 1
WEnd
Return $String
EndFunc
Edited by wolf9228

صرح السماء كان هنا

 

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#3 ·  Posted (edited)

on this logic better than the previous

$String = StringReplaceBetween("abcdabcdabcd","abcd","abcd","New")
MsgBox(0,"Between(abcd,abcd)",$String)
$String = StringReplaceBetween("abcdabcdabcd","a","c","New")
MsgBox(0,"Between(a,c)",$String)
$String = StringReplaceBetween("abcdabcdabcd","a","b","New")
MsgBox(0,"Between(a,b)",$String)
$String = StringReplaceBetween("aabcdabcdabcd","a","a","New")
MsgBox(0,"(aabcdabcdabcd) Between(a,a)",$String)
$String = StringReplaceBetween("abcdabcdabcd","ab","c","New")
MsgBox(0,"Between(ab,c)",$String)
$String = StringReplaceBetween("abcdabcdabcd","b","cd","New")
MsgBox(0,"Between(b,cd)",$String)

Func StringReplaceBetween($String,$beginString,$EndString,$Replacestring)
$CharA = StringUpper(StringLeft($beginString,1))
$CharB = StringUpper(StringLeft($EndString,1))
$Lena = StringLen($String)
$LenB = StringLen($beginString)
$LenC = StringLen($EndString)
$ibeginString = StringUpper($beginString)
$iEndString = StringUpper($EndString)
Local $i = 1
While ($i <= $Lena)
$CharC = StringUpper(StringMid($String,$i,1))
if ($CharA == $CharC) Then
$TextA = StringUpper(StringMid($String,$i,$LenB))
If ($TextA == $ibeginString) Then
Local $j = $i + $LenB - 1
While ($j <= $Lena)
$CharD = StringUpper(StringMid($String,$j,1))
if ($CharB == $CharD) Then
$TextB = StringUpper(StringMid($String,$j,$LenC))
if ($TextB == $iEndString) Then
if ($i = $j And $LenB = 1) Then
$iCharA = StringUpper(StringMid($String,$j,1))
$iCharB = StringUpper(StringMid($String,$j + 1,1))
if ($iCharA <> $iCharB) Then ExitLoop
$TextC = StringMid($String,1,($i + $LenB) - 1)
$TextD = StringMid($String,$j + 1,$Lena)
$String = $TextC & $Replacestring & $TextD
$Lena = StringLen($String)
$i = StringLen($TextC & $Replacestring)
ExitLoop
EndIf
$TextC = StringMid($String,1,($i + $LenB) - 1)
$TextD = StringMid($String,$j,$Lena)
$String = $TextC & $Replacestring & $TextD
$Lena = StringLen($String)
$i = StringLen($TextC & $Replacestring)
EndIf
ExitLoop
EndIf
$j += 1
WEnd
Else
ExitLoop
EndIf
EndIf
$i += 1
WEnd
Return $String
EndFunc
Edited by wolf9228

صرح السماء كان هنا

 

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Thanks Wolf9228. I will need to experiment with this some. You have introduced me to some new functions that I was not aware of. Some don't seem to show in my help index. Thanks again.

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#5 ·  Posted (edited)

Is the request as simple as this?

Array:

#include <String.au3>
Global $gs_data = FileRead('SomeFile')
Global $ga_between = _StringBetween($gs_data, "unique_front_str", "unique_end_str")

Enum through array something like

Global $gs_findstr, $gs_replacestr, $gs_myreplacementstr
For $i = 0 To UBound($ga_between) - 1
    $gs_findstr = "unique_front_str" & $ga_between[$i] & "unique_end_str"
    $gs_replacestr = "unique_front_str" & $gs_myreplacementstr & "unique_end_str"
    $gs_data = StringReplace($gs_data, $gs_findstr, $gs_replacestr)
Next
; Now $gs_data should have the corrected values

?

Edited by SmOke_N

Common sense plays a role in the basics of understanding AutoIt... If you're lacking in that, do us all a favor, and step away from the computer.

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Guys, Both versions worked but I chose the $ga_between script by Smoke_N. Below is what I have so far (bit messy) but it works for the test I have conducted so far. I used it to modified the session file for a webcam application and it worked without any apparent errors. i.e. I was able to pull up the webcam application with the new session file, and see the changed receipient email in various places, and all other functions appeared to be unaffected. Thanks again to all.

-------------------------------------------------------------------------------------------------------------

;Below finds the HEX string to replace, and defines the replacement string variables.

$filename = "TEST.txt"

Global $gs_data = FileRead($filename)

if @error = 1 then

MsgBox(0,"File not opened or other error")

Else

msgbox(0,"AFTER",$gs_data)

EndIf

;Hex for (EmailAddress=) and (,"EmailSubject=)

Global $ga_between = _StringBetween($gs_data, "456d61696c416464726573733d", "2c22456d61696c5375626a6563743d")

if $ga_between = 0 then

MsgBox(0, "_StringBetween", "Failure")

EndIf

if $ga_between = 1 then

MsgBox(0,"_StringBetween", "No between found")

else

MsgBox(0, "StringBetween Is", $ga_between)

EndIf

;Hex for the replacement string (dog@catz.com) -Example email address for demo

Global $gs_findstr, $gs_replacestr, $gs_myreplacementstr

$gs_myreplacementstr = "646f6773406361747a2e636f6d"

MsgBox(0,"Replacement String", $gs_myreplacementstr)

For $i = 0 To UBound($ga_between) - 1

MsgBox(0,"$ga_between size",UBound($ga_between))

$gs_findstr = "456d61696c416464726573733d" & $ga_between[$i] & "2c22456d61696c5375626a6563743d"

MsgBox(0,"gs_findstr", $gs_findstr)

$gs_replacestr = "456d61696c416464726573733d" & $gs_myreplacementstr & "2c22456d61696c5375626a6563743d"

MsgBox(0,"$gs_replacestr",$gs_replacestr)

$find = $gs_findstr

$replace = $gs_replacestr

$NewFile = _ReplaceStringInFile($filename,$find,$replace, 0, 0)

if $NewFile = -1 then

msgbox(0, "ERROR", "The pattern could not be replaced in file: " & $filename & " Error: " & @error)

exit

else

msgbox(0, "INFO", "Found " & $NewFile & " occurances of the pattern: " & $find & " in the file: " & $filename)

endif

Next

FileClose($filename)

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