Exports the list of files modified between two commit ids (or tag ids) to a zip archive.

exportGitDiffFilesToZipArchive.ps1

param(
    # Git tag or commit has from which we want the patch to start
    [String] $FromTag,
    # Path of the patch file
    [String] $PatchFilePath,
    # Git tag or commit hash where to we want the patch to update to (default HEAD, current checkout)
    [String] $ToTag = "HEAD"
)

function New-ZipFromFiles (
    # The name and path of the resulting ZIP file
    [Parameter(Mandatory = $true)]
    [String] $ZipFilename,
    
    # The source directory to compress into a zip
    [Parameter(Mandatory = $true)]
    [ValidateScript({Test-Path $_ -PathType Container})]
    [String] $SourceDir)
{
   Add-Type -Assembly System.IO.Compression.FileSystem
   $absoluteSourcePath = Resolve-Path $SourceDir

   $resultPath = $ExecutionContext.SessionState.Path.GetUnresolvedProviderPathFromPSPath($ZipFilename)
   
   $compressionLevel = [System.IO.Compression.CompressionLevel]::Optimal
   [System.IO.Compression.ZipFile]::CreateFromDirectory(
       $absoluteSourcePath,
       $resultPath, 
       $compressionLevel,
       $false)
}

$modifiedFiles = git diff "$FromTag..$ToTag" --no-commit-id --name-only --diff-filter=ACMRT 

foreach ($itemToCopy in $modifiedFiles)
{
    $targetFolder = Split-Path $itemToCopy
    $targetFileName = Split-Path $itemToCopy -Leaf
    $targetFolder = Join-Path ./Temp $targetFolder

    $targetPathAndFile = Join-Path $targetFolder $targetFileName

    # If destination folder doesn't exist
    if (!(Test-Path $targetFolder -PathType Container)) {
        # Create destination folder
        New-Item -Path $targetFolder -ItemType Directory -Force
    }

    Copy-Item -Path $itemToCopy -Destination $targetPathAndFile 
}

$PatchFilePath
New-ZipFromFiles $PatchFilePath "./Temp"

Remove-Item -Recurse -Force ./Temp