add rider diff support

fixes #77

src/DiffEngine/DiffTool.cs

@@ -18,5 +18,6 @@ public enum DiffTool
         AraxisMerge,
         P4Merge,
         BeyondCompare,
+        Rider
     }
 }

src/DiffEngine/DiffTools.cs

@@ -15,6 +15,7 @@ internal static List<ToolDefinition> Tools()
         {
             return new List<ToolDefinition>
             {
+                Implementation.Rider(),
                 Implementation.VisualStudio(),
                 Implementation.VsCode(),
                 Implementation.TkDiff(),

src/DiffEngine/Implementation/Rider.cs

@@ -0,0 +1,20 @@
+using System;
+using DiffEngine;
+
+static partial class Implementation
+{
+    public static ToolDefinition Rider() => new ToolDefinition(
+        name: DiffTool.Rider,
+        url: "https://www.jetbrains.com/rider/",
+        supportsAutoRefresh: false,
+        isMdi: false,
+        supportsText: true,
+        buildArguments: (tempFile, targetFile) => $" diff \"{tempFile}\" \"{targetFile}\"",
+        windowsExePaths: new[]
+        {
+            @"%ProgramFiles%\JetBrains\JetBrains Rider *\bin\rider64.exe"
+        },
+        binaryExtensions: Array.Empty<string>(),
+        linuxExePaths: Array.Empty<string>(),
+        osxExePaths: Array.Empty<string>());
+}

src/DiffEngine/ProcessCommand.cs

@@ -1,5 +1,4 @@
-
-using System.Diagnostics;
+using System.Diagnostics;
 
 namespace DiffEngine
 {

src/DiffEngine/ToolDefinition.cs

@@ -1,5 +1,6 @@
 using System;
 using System.IO;
+using System.Linq;
 using System.Runtime.InteropServices;
 using DiffEngine;
 
@@ -70,15 +71,12 @@ void FindExe(string[] exePaths)
     {
         foreach (var exePath in exePaths)
         {
-            var expanded = Environment.ExpandEnvironmentVariables(exePath);
-            if (!File.Exists(expanded))
+            if (WildcardFileFinder.TryFind(exePath, out var result))
             {
-                continue;
+                ExePath = result;
+                Exists = true;
+                return;
             }
-
-            ExePath = expanded;
-            Exists = true;
-            return;
         }
     }
 }