src/IOL.Helpers/InMemoryZipArchive.cs


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using System;
using System.Collections.Generic;
using System.IO;
using System.IO.Compression;

namespace IOL.Helpers;

public static class InMemoryZipArchive
{
	public static byte[] Create(IEnumerable<InMemoryFile> files, string unixPermissionString = "664") {
		using var archiveStream = new MemoryStream();
		using (var archive = new ZipArchive(archiveStream, ZipArchiveMode.Create, true)) {
			foreach (var file in files) {
				var zipArchiveEntry = archive.CreateEntry(file.FileName, CompressionLevel.Fastest);
				zipArchiveEntry.ExternalAttributes |= Convert.ToInt32(unixPermissionString, 8) << 16;
				using var zipStream = zipArchiveEntry.Open();
				zipStream.Write(file.Content, 0, file.Content.Length);
			}
		}

		return archiveStream.ToArray();
	}

	public class InMemoryFile
	{
		public string FileName { get; set; }
		public byte[] Content { get; set; }
	}
}