VfsEntryDirectory.cs

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using System;
using System.Collections.Concurrent;
using System.Linq;
 
namespace IKVM.Runtime.Vfs
{
 
    internal sealed class VfsEntryDirectory : VfsDirectory
    {
 
        readonly ConcurrentDictionary<string, VfsEntry> entries = new();
 
        public VfsEntryDirectory(VfsContext context) :
            base(context)
        {
 
        }
 
        public VfsDirectory GetOrCreateDirectory(string name)
        {
            return (VfsDirectory)entries.GetOrAdd(name, _ => new VfsEntryDirectory(Context));
        }
 
        public VfsEntry AddEntry(string name, VfsEntry entry)
        {
            if (name is null)
                throw new ArgumentNullException(nameof(name));
            if (entry is null)
                throw new ArgumentNullException(nameof(entry));
 
            return entries.AddOrUpdate(name, entry, (_, __) => entry);
        }
 
        public override VfsEntry GetEntry(string name)
        {
            if (name is null)
                throw new ArgumentNullException(nameof(name));
 
            return entries.TryGetValue(name, out VfsEntry entry) ? entry : null;
        }
 
        public override string[] List() => entries.Keys.ToArray();
 
    }
 
}