使用 ZipArchive class 从文件夹中删除特定文件，在 war 文件中

Question

My goal is to get some files from the WAR, make changes, delete older files from WAR and then move the edited files to WAR.

At the moment I can find, edit, remove and move files from an WAR file using the ZipArchive class. But the problem I am facing is that I can not remove files from specific folders inside the WAR, just by name.

Given the WAR structure I have:
~/war
~/war/client/lib/file.jar
~/war/server/lib/file.jar

Until I reached this point I have been using the following function to remove files:

function Remove-FilesFromZip {
    param(
        [string]$ZipFile,
        [string]$FileName
    )

    try {
        
        [Reflection.Assembly]::LoadWithPartialName('System.IO.Compression')
        $Retorno
        $stream = New-Object IO.FileStream($ZipFile, [IO.FileMode]::Open)
        $mode = [IO.Compression.ZipArchiveMode]::Update
        $zip = New-Object IO.Compression.ZipArchive($stream, $mode)
        Write-Host "$zip $mode $stream $Retorno" 

    ($zip.Entries | Where-Object { $FileName -contains $_.Name }) | ForEach-Object { $_.Delete() }

        Write-Host "$FileName excluido de $ZipFile" 
    }
    catch {
        Write-Host "Erro ao excluir $FileName de $ZipFile" 

        $zip.Dispose()
        $stream.Close()
        $stream.Dispose()
    }

    $zip.Dispose()
    $stream.Close()
    $stream.Dispose()

}

Since the files I was deleting only came up once on my WAR, it was not a problem, but if I try something like this:

Remove-FilesFromZip "C:/pathToWar/warFile.war" "file.jar"

Both files are deleted from the war.

And if I try to use the path like so:

Remove-FilesFromZip "C:/pathToWar/warFile.war" "/server/lib/file.jar"

Nothing happens.

How can I edit my function so I can describe the path to the file I would like to delete?

Also, for context I have another function that I use after this one, that I can move files to the war and to the desired folder, but when I move without deleting the file with same name, I got duplicate files inside and this is not desirable.

This is the function:

function Move-FileToZip {
    param(
        $ZipFileName,
        $FileNameInZip,
        $NewFileToAdd
    )
    try {
        # Write-LogWIthTime "-------------- Move-FileToZip --------------"

        [Reflection.Assembly]::LoadWithPartialName('System.IO.Compression.FileSystem') | Out-Null
        $zip = [System.IO.Compression.ZipFile]::Open($ZIPFileName, "Update")

        [Reflection.Assembly]::LoadWithPartialName('System.IO.Compression.FileSystem') | Out-Null
        [System.IO.Compression.ZipFileExtensions]::CreateEntryFromFile($zip, $NewFileToAdd, $FileNameInZip, "Optimal") | Out-Null
        $zip.Dispose()

        Write-Host "Adicionado com sucesso $NewFileToAdd as $FileNameInZip para $ZIPFileName "
    }
    catch {
        $zip.Dispose()
        Write-Host "Falha ao adicionar $NewFileToAdd para $ZIPFileName . Detalhes : $_" 
    }
}

That I use as:

Move-FileToZip "C:/pathToWar/warFile.war" "/server/lib/file.jar" "C:/updatedFiles/server/lib/file.jar"

The ideal scenario for me would be to simply update the file when I use the Move-FileToZip function, but just getting the Remove-FilesFromZip to work as I intend it would be great!

Answer 1

The issue with your Remove-FilesFromZip function is that you are filtering the Zip entries by using the Name property and so you're not able to distinguish between the files with the same name but in different directories.

 $zip.Entries | Where-Object { $FileName -contains $_.Name }

If you filter instead using the FullName property then you should be able to target the specific file by using it's full name within the zip file:

 $zip.Entries | Where-Object { $FileName -eq $_.FullName }

With that change you should be able to do something like the following, assuming that client is a top level directory within the zip file:

Remove-FilesFromZip "C:/pathToWar/warFile.war" "client/lib/file.jar"