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using System;
using System.IO;
using System.Security.Cryptography;
using System.Threading;
namespace StardewModdingAPI.Toolkit.Utilities
{
/// <summary>Provides utilities for dealing with files.</summary>
public static class FileUtilities
{
/*********
** Public methods
*********/
/// <summary>Delete a file or folder regardless of file permissions, and block until deletion completes.</summary>
/// <param name="entry">The file or folder to reset.</param>
public static void ForceDelete(FileSystemInfo entry)
{
// ignore if already deleted
entry.Refresh();
if (!entry.Exists)
return;
// delete children
if (entry is DirectoryInfo folder)
{
foreach (FileSystemInfo child in folder.GetFileSystemInfos())
FileUtilities.ForceDelete(child);
}
// reset permissions & delete
entry.Attributes = FileAttributes.Normal;
entry.Delete();
// wait for deletion to finish
for (int i = 0; i < 10; i++)
{
entry.Refresh();
if (entry.Exists)
Thread.Sleep(500);
}
// throw exception if deletion didn't happen before timeout
entry.Refresh();
if (entry.Exists)
throw new IOException($"Timed out trying to delete {entry.FullName}");
}
/// <summary>Get the MD5 hash for a file.</summary>
/// <param name="absolutePath">The absolute file path.</param>
public static string GetFileHash(string absolutePath)
{
using FileStream stream = File.OpenRead(absolutePath);
using MD5 md5 = MD5.Create();
byte[] hash = md5.ComputeHash(stream);
return BitConverter.ToString(hash).Replace("-", "").ToLowerInvariant();
}
}
}
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