Aspose.Zip for .NET으로 Zip 파일 수정

using Aspose.Zip;
using System;
using System.Collections.Generic;
using System.IO;
using System.Linq;
using System.Text;
using System.Threading.Tasks;

string dataDir = "Your Data Directory";
using (Archive outer = new Archive(dataDir + "outer.zip"))
{
    // 내부 우편번호 항목 식별로 진행
}

List<ArchiveEntry> entriesToDelete = new List<ArchiveEntry>();
List<string> namesToInsert = new List<string>();
List<MemoryStream> contentToInsert = new List<MemoryStream>();

foreach (ArchiveEntry entry in outer.Entries)
{
    if (entry.Name.EndsWith(".zip", StringComparison.InvariantCultureIgnoreCase))
    {
        entriesToDelete.Add(entry);
        
        using (MemoryStream innerCompressed = new MemoryStream())
        {
            entry.Open().CopyTo(innerCompressed);
            
            // 내부 항목 추출
            using (Archive inner = new Archive(innerCompressed))
            {
                foreach (ArchiveEntry ie in inner.Entries)
                {
                    namesToInsert.Add(ie.Name);
                    MemoryStream content = new MemoryStream();
                    ie.Open().CopyTo(content);
                    contentToInsert.Add(content);
                }
            }
        }
    }
}

foreach (ArchiveEntry e in entriesToDelete)
{
    outer.DeleteEntry(e);
}

for (int i = 0; i < namesToInsert.Count; i++)
{
    outer.CreateEntry(namesToInsert[i], contentToInsert[i]);
}

outer.Save(dataDir + "flatten.zip");