FastZip does not allow Extended Path Filter to be specified

[atcobb01]

Version of SharpZipLib: 1.2.0

trying to use Extended Path Filter, but don't see any examples. FastZip uses strings for Name and Directory filters, but I need file time as a criteria. I don't see how to use the ExtendedPathFilter class when creating a zip file using FastZip or any other method. Can you help?

[piksel]

No, there does not seem to be any way to provide custom filters for FastZip. I'm not sure about what the purpose of ExtendedPathFilter is. It looks like it's meant to be used in FastZip, perhaps with an overloaded constructor. That should be a pretty small PR.

Otherwise, your use case could be achieved fairly easily with ZipFile like this:

using (var zf = new ZipFile(zipFileName)) {
    zf.BeginUpdate();
    var yesterday = DateTime.UtcNow.AddDays(-1);
    var files = Directory.GetFiles(sourceDir)
        .Where(f => new FileInfo(f).LastWriteTimeUtc > yesterday);
        
    foreach(var file in files){
        // Provide an entry name as a second parameter 
        // to avoid using the full path to the file
        var entryName = Path.GetFileName(file);
        zf.Add(file, entryName);
    }
    zf.CommitUpdate();
}

[Numpsy]

Maybe an extra version of CreateZip that takes the file/directory filters as IScanFilter rather than strings?

It looks like FileSystemScanner already has a constructor that can take a pair of IScanFilters on top of the one that uses strings (currently used by FastZip), so maybe that's a straight forward way of passing in alternate filter implementations?

[Numpsy]

#482 allows alternate filters to be specified for CreateZip, though doesn't change the Extract functions.

[piksel]

This should be fixed by #482.