Powershell Expand-archive problem.


  1. Posts : 501
    windows 10 (x64) Home 20H2 19042.844
       #1

    Powershell Expand-archive problem.


    I have a line as below in my script.
    Expand-Archive .\PR.zip -DestinationPath .\

    But it gives an error as below and does not do expand archive.
    ===
    calling ".ctor" with "3" argument(s): "End of Central Directory record could not be found."
    At C:\WINDOWS\system32\WindowsPowerShell\v1.0\Modules\Microsoft.PowerShell.Archive\Microsoft.PowerShell .Archive.psm1:934 char:23
    + ... ipArchive = New-Object -TypeName System.IO.Compression.ZipArchive -Ar ...
    + ~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~
    + CategoryInfo : InvalidOperation: (:) [New-Object], MethodInvocationException
    + FullyQualifiedErrorId : ConstructorInvokedThrowException,Microsoft.PowerShell.Commands.NewObjectCommand

    ===

    What should I do to make expand-archive to work?
      My Computer


  2. Posts : 3,453
       #2

    It's due to the compression type not being recognised.

    Try this - it should extract most types of compressed files

    Code:
    function Extract-Cab ($CabFilePath, $Destination){
        $Shell = New-Object -Comobject "Shell.Application"
        $SourceCab = $Shell.Namespace($CabFilePath).items()
        $DestinationFolder = $Shell.Namespace($Destination)
        $DestinationFolder.CopyHere($SourceCab)
    }
    
    Extract-Cab -CabFilePath .\PR.zip -Destination .\
    Just realised - it won't resolve relative paths - you will need to call Convert-Path

    Here's another example that works with short paths

    Code:
    Param($CabFilePath, $Destination)
    
    $Shell = New-Object -Comobject "Shell.Application"
    $SourceCab = $Shell.Namespace((Convert-Path $CabFilePath)).items()
    $DestinationFolder = $Shell.Namespace((Convert-Path $Destination))
    $DestinationFolder.CopyHere($SourceCab)
    Eg:
    .\ExtractCab.ps1 -CabFilePath .\PR.zip -Destination .\
    Powershell Expand-archive problem. Attached Files
    Last edited by Superfly; 06 Jan 2020 at 12:38.
      My Computer


  3. Posts : 501
    windows 10 (x64) Home 20H2 19042.844
    Thread Starter
       #3

    Superfly said:
    It's due to the compression type not being recognised.

    Try this - it should extract most types of compressed files

    Code:
    function Extract-Cab ($CabFilePath, $Destination){
        $Shell = New-Object -Comobject "Shell.Application"
        $SourceCab = $Shell.Namespace($CabFilePath).items()
        $DestinationFolder = $Shell.Namespace($Destination)
        $DestinationFolder.CopyHere($SourceCab)
    }
    
    Extract-Cab -CabFilePath .\PR.zip -Destination .\
    Just realised - it won't resolve relative paths - you will need to call Convert-Path

    Here's another example that works with short paths

    Code:
    Param($CabFilePath, $Destination)
    
    $Shell = New-Object -Comobject "Shell.Application"
    $SourceCab = $Shell.Namespace((Convert-Path $CabFilePath)).items()
    $DestinationFolder = $Shell.Namespace((Convert-Path $Destination))
    $DestinationFolder.CopyHere($SourceCab)
    Eg:
    .\ExtractCab.ps1 -CabFilePath .\PR.zip -Destination .\
    I get msg as
    D:\Data\Lvg\backup\bin\ExtractCab.ps1 is not digitally signed. What to do?
      My Computer


  4. Posts : 3,453
       #4

    lvgandhi said:
    I get msg as
    D:\Data\Lvg\backup\bin\ExtractCab.ps1 is not digitally signed. What to do?
    Run this in PS as Admin:

    Set-ExecutionPolicy -ExecutionPolicy RemoteSigned -Scope CurrentUser
      My Computer


  5. Posts : 501
    windows 10 (x64) Home 20H2 19042.844
    Thread Starter
       #5

    Superfly said:
    Run this in PS as Admin:

    Set-ExecutionPolicy -ExecutionPolicy RemoteSigned -Scope CurrentUser
    I ran this as admn in powershell. Still I get the same error when running Extract-Cab
      My Computer


  6. Posts : 3,453
       #6

    See if the file is blocked - right clicking the .PS1 file, Properties and choosing Unblock.

    Or try other execution policies eg -ExecutionPolicy Bypass

    You can send me your script and I'll add the function to it.

    The file I uploaded is just to test.




      My Computer


  7. Posts : 501
    windows 10 (x64) Home 20H2 19042.844
    Thread Starter
       #7

    Superfly said:
    See if the file is blocked - right clicking the .PS1 file, Properties and choosing Unblock.

    Or try other execution policies eg -ExecutionPolicy Bypass

    You can send me your script and I'll add the function to it.

    The file I uploaded is just to test.


    Thanks. Now Expand-Archive is working. Still a puzzle why it was not working yesterday , but working at 12 noon IST. After 5 hrs, it did not work. Now again it works. .

    - - - Updated - - -

    Now I have found problem is with downloaded file, not with expand-archive.
    When I download a file using firefox browser its size is as follows
    PS D:\Data\Downloads> dir PR0*


    Directory: D:\Data\Downloads


    Mode LastWriteTime Length Name
    ---- ------------- ------ ----
    -a---- 08/01/2020 19:41 312568 PR080120.zip

    I used this code below to download file.
    $url = "https://www.nseindia.com/archives/equities/bhavcopy/pr/$PR"
    $output = "PR.zip"
    Invoke-WebRequest -Uri $url -OutFile $output

    file size as below.
    PS D:\Data\Lvg> dir PR*


    Directory: D:\Data\Lvg


    Mode LastWriteTime Length Name
    ---- ------------- ------ ----
    -a---- 08/01/2020 20:08 180410 PR.zip

    7zip is able to unzip direct download. when try to unzip file downloaded by PS script I get comment it is not archive file.
    This happens only for last 3 days. Previously there was no problem.
    How to download file with PS to get file same as direct download.
    Last edited by lvgandhi; 07 Jan 2020 at 08:23.
      My Computer


 

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