Creating Directories in a ZipArchive C# .Net 4.5

Question

A ZipArchive is a collection of ZipArchiveEntries, and adding/removing \"Entries\" works nicely. But it appears there is no notion of directories / nested \"Archives\". In t

Answer 1

I don't like recursion as it was proposed by @Val, @sDima, @Nitheesh. Potentially it leads to the StackOverflowException because the stack has limited size. So here is my two cents with tree traversal.

public static class ZipArchiveExtensions
{
    public static void CreateEntryFromDirectory(this ZipArchive archive, string sourceDirName, CompressionLevel compressionLevel = CompressionLevel.Fastest)
    {
        var folders = new Stack();
        folders.Push(sourceDirName);
        
        do
        {
            var currentFolder = folders.Pop();
            Directory.GetFiles(currentFolder).ForEach(f => archive.CreateEntryFromFile(f, f.Substring(sourceDirName.Length+1), compressionLevel));
            Directory.GetDirectories(currentFolder).ForEach(d => folders.Push(d));
        } while (folders.Count > 0);
    }
}