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chewy

Hosts file array help

8 posts in this topic

I know there has been question asked about editing the host file before. I have been able to successfully open the host file and add in a new entry with no problem. I am also able to do a find and replace in the host file with no problem.

What I want to accomplish is to be able to open a host file and search for a string of text and replace the entire line.

For example:

in my host file if I may or may not have a line like the following

10.0.0.1 zenwsimport

However the ip address could be different, so what I would like to have happen is check for the word "zenwsimport" (that will be constant, if the line is there at all) and if it is found, edit the entire line to say:

10.0.0.2 zenwsimport

Also if zenwsimport is not found I would add in the line above. So basically I know I need to read everything into an array, but that is where I am stuck. I get confused trying to delete out the array line I want removed and the new line added in.

Any direction and help would be appreciated!

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#2 ·  Posted (edited)

There is a function to create an array with each line of the file. FileToArray or something like that

Hmm, also check FileReadLine

Edited by Inverted

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There is a function to create an array with each line of the file. FileToArray or something like that

Hmm, also check FileReadLine

i got the array to read in, but I dont know how to find and delete out a line within the array and save the results to the original file

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#4 ·  Posted (edited)

i got the array to read in, but I dont know how to find and delete out a line within the array and save the results to the original file

Come on, it should be kinda easy. You need a loop to go through each line to check for the string or replace it if you want (StringReplace maybe ?)

You can fill a line with empty string "" or ";" used for comments. Or you can put a ";" in front of the old line for backup.

If you're stuck post some code.

Edited by Inverted

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here is what I have

#include <file.au3>
#include <Array.au3>

Dim $zenfind
Dim $aRecords
If Not _FileReadToArray(@SystemDir & "\Drivers\etc\hosts",$aRecords) Then
    
   MsgBox(4096,"Error", " Error reading log to Array     error:" & @error)
   
   Exit
EndIf

;_ArrayDisplay($aRecords, "b")

For $x = 0 to $aRecords[0]
    Msgbox(0,'Record:' & $x, $aRecords[$x])
;;;;;xxxxx;;;;;msgbox (0, "test", $aRecords[0])
    $zenfind = _ArraySearch ($aRecords[$x], "zenwsimport", 0, 0)
    msgbox (0,"zenfind", $zenfind)
    if  $zenfind <> -1 then 
        $aRecords[$x] = "172.20.96.2      zenwsimport"
        msgbox (0,"after 96.2 check",$aRecords[$x])
    EndIf
    
Next

Im getting -1 everytime for the $zenfind from the array search even though I know it is in the host file

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#6 ·  Posted (edited)

Parameter 1 should be just the array name ? :

For $x = 0 to $aRecords[0]
    Msgbox(0,'Record:' & $x, $aRecords[$x])
;;;;;xxxxx;;;;;msgbox (0, "test", $aRecords[0])
    $zenfind = _ArraySearch ($aRecords[$x], "zenwsimport", 0, 0)
    msgbox (0,"zenfind", $zenfind)
    if  $zenfind <> -1 then
        $aRecords[$x] = "172.20.96.2      zenwsimport"
        msgbox (0,"after 96.2 check",$aRecords[$x])
    EndIf
    
Next

should be?:

$zenfind = _ArraySearch ($aRecords, "zenwsimport", 0, 0)
    if  $zenfind <> -1 then
        $aRecords[$x] = "172.20.96.2      zenwsimport"
        msgbox (0,"after 96.2 check",$aRecords[$x])
    EndIf
Edited by Jos

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#7 ·  Posted (edited)

If you want a line-by-line search, look at this approach :

(I used the string "example" for searching, cause I don't have that zen thingy)

#include <file.au3>
#include <Array.au3>

Dim $zenfind
Dim $aRecords
If Not _FileReadToArray(@SystemDir & "\Drivers\etc\hosts",$aRecords) Then
    
   MsgBox(4096,"Error", " Error reading log to Array     error:" & @error)
  
   Exit
EndIf

;_ArrayDisplay($aRecords, "b")

For $x = 1 to $aRecords[0]
   ; Msgbox(0,'Record:' & $x, $aRecords[$x])
;;;;;xxxxx;;;;;msgbox (0, "test", $aRecords[0])
    If StringInStr ($aRecords[$x], "example") Then
          msgbox (4096,"zenfind", "String found in line : " & $x)
    EndIf
Next
Edited by Inverted

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thanks for the help guys, I was overthinking this. I reworked it and got it to work. Here is the code in case anyone is interested.

#cs ----------------------------------------------------------------------------

 AutoIt Version: 3.2.10.0
 Author:         Matt Majewski
 Date:           5.20.09
 Script Function: Edits the host file to append zenwsimport IP
 this will add the specified IP address regardless of whether zenwsimport is already in the HOSTS File
 This script will either add the IP in or edit the existing.  It will NOT leave the ZEN IP in the file
 if one exists already
 
 for some reason it adds an extra line break at the beginning of the HOSTS file when it saves.  Feel free
 to figure out why and fix if you want!
#ce ----------------------------------------------------------------------------

; Script Start - Add your code below here


#include <file.au3>
#include <Array.au3>



;DEFINES

;EDIT THIS IP TO THE IP ADDRESS OF YOUR ZEN SERVER YOU WANT MACHINES TO IMPORT TO
$ZENIP = "172.20.96.2"
;HOSTS file path
$sFile = @SystemDir & "\Drivers\etc\hosts"
;used to define the index in the array when zenwsimport was found
Dim $zenfind
;the array used to import the HOSTS file to
Dim $aRecords


;Open the HOSTS file for reading into the array
If Not _FileReadToArray(@SystemDir & "\Drivers\etc\hosts",$aRecords) Then
    
   MsgBox(4096,"Error", " Error reading log to Array     error:" & @error)
   
   Exit
EndIf


;searches the imported array to find the word "zenwsimport"
;then set the arrayindex it found it into $zenfind
$zenfind = _ArraySearch ($aRecords, "zenwsimport", 0 , 0, 0, True)



;IF it found zenwsimport
IF ($zenfind <> -1)  Then
    
;change the array to include the new zen ip Number
;it changes the specific array index based on the earlier search
    $aRecords[$zenfind] = $ZENIP & "     zenwsimport"


;open the host file for editing
;the 2 parameter will erase the contents of the file
    $hFile = FileOpen($sFile, 2); 2 = erase
;write the array to the open File
    _FileWriteFromArray($hfile, $aRecords, 1)
;close the HOSTS file that was opened
    FileClose($hFile)

; did not find zenwsimport
Else
    
;open the host file for editing
;the 1 parameter will append to the end of the file
    $hFile = FileOpen($sFile, 1); 1 = append
;write the new zen ip to the end of the file
    FileWriteLine($hFile, $ZENIP & "     zenwsimport")
;close the HOSTS file that was opened
    Fileclose($hFile)
    
;END IF found ZENWSImport of not
EndIf

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