Added extension method to get URI for fs object

Author: sakno

src/DotNext.Tests/IO/FileUriTests.cs

@@ -37,6 +37,14 @@ public static void EncodeAsUri(string fileName, string expected)
         Equal(expected, uri.LocalPath);
     }
 
+    [Fact]
+    public static void GetUriExtension()
+    {
+        var fileName = OperatingSystem.IsWindows() ? "C:\\some\\path" : "/some/path";
+        var uri = new FileInfo(fileName).GetUri();
+        Equal(fileName, uri.LocalPath);
+    }
+
     [Theory]
     [MemberData(nameof(GetPaths))]
     public static void EncodeAsUriChars(string fileName, string expected)

src/DotNext/IO/FileUri.cs

@@ -33,8 +33,12 @@ public static string Encode(ReadOnlySpan<char> fileName, TextEncoderSettings? se
     {
         if (fileName.IsEmpty)
             throw new ArgumentException(ExceptionMessages.FullyQualifiedPathExpected, nameof(fileName));
-        
-        var encoder = settings is null ? UrlEncoder.Default : UrlEncoder.Create(settings);
+
+        return EncodeCore(fileName, settings is null ? UrlEncoder.Default : UrlEncoder.Create(settings));
+    }
+
+    private static string EncodeCore(ReadOnlySpan<char> fileName, UrlEncoder encoder)
+    {
         var maxLength = GetMaxEncodedLengthCore(fileName, encoder);
         using var buffer = (uint)maxLength <= (uint)SpanOwner<char>.StackallocThreshold
             ? stackalloc char[maxLength]
@@ -137,4 +141,17 @@ private static ReadOnlySpan<char> GetPathComponent(ref ReadOnlySpan<char> fileNa
 
         return component;
     }
+
+    /// <summary>
+    /// Gets URI that points to the file system object.
+    /// </summary>
+    /// <param name="fileInfo">The information about file system object.</param>
+    /// <param name="settings">The encoding settings.</param>
+    /// <returns><see cref="Uri"/> that points to the file system object.</returns>
+    public static Uri GetUri(this FileSystemInfo fileInfo, TextEncoderSettings? settings = null)
+    {
+        ArgumentNullException.ThrowIfNull(fileInfo);
+
+        return new(EncodeCore(fileInfo.FullName, settings is null ? UrlEncoder.Default : UrlEncoder.Create(settings)), UriKind.Absolute);
+    }
 }