FindDuplicates/AlgListCommand.cs

@@ -1,26 +0,0 @@
-using System.ComponentModel;
-using Humanizer;
-using Spectre.Console;
-using Spectre.Console.Cli;
-
-namespace FindDuplicates;
-
-[Description("Display a list of usable hashing algorithms.")]
-internal sealed class AlgListCommand : Command
-{
-    public override int Execute(CommandContext context)
-    {
-        AnsiConsole.WriteLine("The default algorithm fdup uses is SHA512.");
-        AnsiConsole.MarkupLine("To specify a different one, use the [cyan]-a[/] or [cyan]--algorithm[/] flag, and pass one of the values below:");
-
-        var table = new Table();
-        table.AddColumn("Algorithm");
-        table.AddColumn("Value");
-
-        foreach (Algorithm algorithm in Enum.GetValues<Algorithm>())
-            table.AddRow($"{algorithm.Humanize()}", $"{algorithm.ToString().ToLower()}");
-
-        AnsiConsole.Write(table);
-        return 0;
-    }
-}

FindDuplicates/Algorithm.cs

@@ -1,15 +0,0 @@
-using System.ComponentModel;
-
-namespace FindDuplicates;
-
-internal enum Algorithm
-{
-    [Description("SHA512")] Sha512,
-    [Description("SHA384")] Sha384,
-    [Description("SHA256")] Sha256,
-    [Description("SHA3-512")] Sha3512,
-    [Description("SHA3-384")] Sha3384,
-    [Description("SHA3-256")] Sha3256,
-    [Description("SHA1")] Sha1,
-    [Description("MD5")] Md5
-}

FindDuplicates/AlgorithmExtensions.cs

@@ -1,42 +0,0 @@
-using System.Security.Cryptography;
-
-namespace FindDuplicates;
-
-internal static class AlgorithmExtensions
-{
-    public static int GetByteCount(this Algorithm algorithm)
-    {
-        return algorithm switch
-        {
-            Algorithm.Sha512 => SHA512.HashSizeInBytes,
-            Algorithm.Sha384 => SHA384.HashSizeInBytes,
-            Algorithm.Sha256 => SHA256.HashSizeInBytes,
-            Algorithm.Sha3512 => SHA3_512.HashSizeInBytes,
-            Algorithm.Sha3384 => SHA3_384.HashSizeInBytes,
-            Algorithm.Sha3256 => SHA3_256.HashSizeInBytes,
-            Algorithm.Sha1 => SHA1.HashSizeInBytes,
-            Algorithm.Md5 => MD5.HashSizeInBytes,
-            _ => 0
-        };
-    }
-
-    public static int HashData(this Algorithm algorithm, Stream source, Span<byte> destination)
-    {
-        // I'd love to use a dictionary to cache the function map, but you can't use Span<> as a type argument,
-        // probably due to the fact that a lambda heap allocs, and we can't have that for ref structs, oh no (!)
-        // so enjoy this absolutely cursed switch expression which checks each algorithm separately. I hate it too.
-
-        return algorithm switch
-        {
-            Algorithm.Sha512 => SHA512.HashData(source, destination),
-            Algorithm.Sha384 => SHA384.HashData(source, destination),
-            Algorithm.Sha256 => SHA256.HashData(source, destination),
-            Algorithm.Sha3512 => SHA3_512.HashData(source, destination),
-            Algorithm.Sha3384 => SHA3_384.HashData(source, destination),
-            Algorithm.Sha3256 => SHA3_256.HashData(source, destination),
-            Algorithm.Sha1 => SHA1.HashData(source, destination),
-            Algorithm.Md5 => MD5.HashData(source, destination),
-            _ => -1
-        };
-    }
-}

FindDuplicates/FindDuplicates.csproj

@@ -33,7 +33,6 @@
     </PropertyGroup>
 
     <ItemGroup>
-        <PackageReference Include="Humanizer.Core" Version="2.14.1" />
         <PackageReference Include="Spectre.Console.Cli" Version="0.48.0"/>
     </ItemGroup>
 

FindDuplicates/ListCommand.cs

@@ -1,6 +1,6 @@
 using System.Collections.Concurrent;
+using System.Security.Cryptography;
 using System.Text;
-using Humanizer;
 using Spectre.Console;
 using Spectre.Console.Cli;
 
@@ -21,7 +21,6 @@ internal sealed class ListCommand : AsyncCommand<ListSettings>
 
         AnsiConsole.MarkupLineInterpolated($"Searching [cyan]{inputDirectory.FullName}[/]");
         AnsiConsole.MarkupLine($"Recursive mode is {(settings.Recursive ? "[green]ON" : "[red]OFF")}[/]");
-        AnsiConsole.MarkupLine($"Using hash algorithm [cyan]{settings.Algorithm.Humanize()}[/]");
 
         await AnsiConsole.Status()
             .StartAsync("Waiting to hash files...", DoHashWaitAsync)
@@ -34,17 +33,17 @@ internal sealed class ListCommand : AsyncCommand<ListSettings>
         {
             int fileCount = files.Count;
 
-            if (fileCount <= 1)
-                continue;
+            if (fileCount > 1)
+            {
+                duplicates += fileCount;
+                AnsiConsole.MarkupLineInterpolated($"Found [cyan]{fileCount}[/] identical files");
+                AnsiConsole.MarkupLineInterpolated($"SHA512 [green]{hash}[/]:");
 
-            duplicates += fileCount;
-            AnsiConsole.MarkupLineInterpolated($"Found [cyan]{fileCount}[/] identical files");
-            AnsiConsole.MarkupLineInterpolated($"{settings.Algorithm.Humanize()} [green]{hash}[/]:");
+                foreach (FileInfo file in files)
+                    AnsiConsole.MarkupLineInterpolated($"- {file.FullName}");
 
-            foreach (FileInfo file in files)
-                AnsiConsole.MarkupLineInterpolated($"- {file.FullName}");
-
-            AnsiConsole.WriteLine();
+                AnsiConsole.WriteLine();
+            }
         }
 
         if (duplicates == 0)
@@ -110,12 +109,12 @@ internal sealed class ListCommand : AsyncCommand<ListSettings>
 
     private void ProcessFile(FileInfo file, ListSettings settings)
     {
-        Span<byte> buffer = stackalloc byte[settings.Algorithm.GetByteCount()];
+        Span<byte> buffer = stackalloc byte[64];
         try
         {
             using FileStream stream = file.OpenRead();
             using BufferedStream bufferedStream = new BufferedStream(stream, 1048576 /* 1MB */);
-            settings.Algorithm.HashData(bufferedStream, buffer);
+            SHA512.HashData(bufferedStream, buffer);
             string hash = ByteSpanToString(buffer);
             if (settings.Verbose)
                 AnsiConsole.WriteLine($"{file.FullName} ->\n    {hash}");
@@ -147,7 +146,7 @@ internal sealed class ListCommand : AsyncCommand<ListSettings>
 
     private static string ByteSpanToString(ReadOnlySpan<byte> buffer)
     {
-        var builder = new StringBuilder(buffer.Length * 2);
+        var builder = new StringBuilder();
 
         foreach (byte b in buffer)
             builder.Append($"{b:X2}");

FindDuplicates/ListSettings.cs

@@ -10,13 +10,8 @@ internal sealed class ListSettings : CommandSettings
     [DefaultValue(".")]
     public string InputPath { get; set; } = ".";
 
-    [CommandOption("-a|--algorithm <algorithm>")]
-    [Description("The hash algorithm used for comparison. Defaults to SHA512. For a list of all available algorithms, run fdup alglist")]
-    [DefaultValue(Algorithm.Sha512)]
-    public Algorithm Algorithm { get; set; } = Algorithm.Sha512;
-
     [CommandOption("-r|--recursive")]
-    [Description("Scans the directory recursively. This may increase run time and is not advised to use when at high order directories such as C: or /")]
+    [Description("When this flag is set, the directory will be scanned recursively. This may take longer.")]
     [DefaultValue(false)]
     public bool Recursive { get; set; } = false;
 

FindDuplicates/Program.cs

@@ -2,5 +2,4 @@ using FindDuplicates;
 using Spectre.Console.Cli;
 
 var app = new CommandApp<ListCommand>();
-app.Configure(cfg => cfg.AddCommand<AlgListCommand>("alglist"));
 await app.RunAsync(args).ConfigureAwait(false);