feature: supports to use relative path in remote URL (#1339)

Signed-off-by: leo <[email protected]>

Author: love-linger

src/Models/Remote.cs

@@ -50,7 +50,10 @@ public static bool IsValidURL(string url)
                     return true;
             }
 
-            return url.StartsWith("file://", StringComparison.Ordinal) || Directory.Exists(url);
+            return url.StartsWith("file://", StringComparison.Ordinal) || 
+                url.StartsWith("./", StringComparison.Ordinal) ||
+                url.StartsWith("../", StringComparison.Ordinal) ||
+                Directory.Exists(url);
         }
 
         public bool TryGetVisitURL(out string url)

src/ViewModels/AddSubmodule.cs

@@ -34,17 +34,10 @@ public AddSubmodule(Repository repo)
 
         public static ValidationResult ValidateURL(string url, ValidationContext ctx)
         {
-            if (ctx.ObjectInstance is AddSubmodule)
-            {
-                if (!Models.Remote.IsValidURL(url) &&
-                    !url.StartsWith("./", StringComparison.Ordinal) &&
-                    !url.StartsWith("../", StringComparison.Ordinal))
-                    return new ValidationResult("Invalid repository URL format");
-                
-                return ValidationResult.Success;
-            }
-            
-            return new ValidationResult("Missing validation context");
+            if (!Models.Remote.IsValidURL(url))
+                return new ValidationResult("Invalid repository URL format");
+
+            return ValidationResult.Success;
         }
 
         public override Task<bool> Sure()