From 752f1c31828e5587c0de011c1e50780d14ee44b6 Mon Sep 17 00:00:00 2001
From: Oleksii Holub <1935960+Tyrrrz@users.noreply.github.com>
Date: Thu, 26 May 2022 20:11:27 +0300
Subject: [PATCH] Rework relative path stuff

---
 GitHubActionsTestLogger/GitHubWorkflow.cs     |  2 +-
 .../Utils/Extensions/StringExtensions.cs      |  6 ----
 GitHubActionsTestLogger/Utils/PathEx.cs       | 27 +++++++++++++-----
 GitHubActionsTestLogger/Utils/Polyfills.cs    | 28 +++++++++++++++----
 4 files changed, 43 insertions(+), 20 deletions(-)

diff --git a/GitHubActionsTestLogger/GitHubWorkflow.cs b/GitHubActionsTestLogger/GitHubWorkflow.cs
index e17176e..3dd4fdc 100644
--- a/GitHubActionsTestLogger/GitHubWorkflow.cs
+++ b/GitHubActionsTestLogger/GitHubWorkflow.cs
@@ -108,7 +108,7 @@ public partial class GitHubWorkflow
             return null;
 
         var filePathNormalized = PathEx
-            .GetRelativePath(workspacePath.EnsureEndsWith("/"), filePath)
+            .GetRelativePath(workspacePath, filePath)
             .Replace("\\", "/")
             .Trim('/');
 
diff --git a/GitHubActionsTestLogger/Utils/Extensions/StringExtensions.cs b/GitHubActionsTestLogger/Utils/Extensions/StringExtensions.cs
index 6c5c67d..d0a0660 100644
--- a/GitHubActionsTestLogger/Utils/Extensions/StringExtensions.cs
+++ b/GitHubActionsTestLogger/Utils/Extensions/StringExtensions.cs
@@ -39,10 +39,4 @@ public static StringBuilder Trim(this StringBuilder builder)
 
         return builder;
     }
-
-    public static string EnsureEndsWith(
-        this string str,
-        string end,
-        StringComparison comparison = StringComparison.Ordinal) =>
-        !str.EndsWith(end, comparison) ? str + end : str;
 }
\ No newline at end of file
diff --git a/GitHubActionsTestLogger/Utils/PathEx.cs b/GitHubActionsTestLogger/Utils/PathEx.cs
index 1306ff8..4cb3d07 100644
--- a/GitHubActionsTestLogger/Utils/PathEx.cs
+++ b/GitHubActionsTestLogger/Utils/PathEx.cs
@@ -1,20 +1,33 @@
 using System;
+using System.IO;
+using System.Linq;
+using System.Runtime.InteropServices;
 
 namespace GitHubActionsTestLogger.Utils;
 
 internal static class PathEx
 {
+    private static readonly StringComparison PathStringComparison =
+        RuntimeInformation.IsOSPlatform(OSPlatform.Windows)
+            ? StringComparison.OrdinalIgnoreCase
+            : StringComparison.Ordinal;
+
     // This method exists on .NET5+ but it's impossible to polyfill static
     // members, so we'll just use this one on all targets.
     public static string GetRelativePath(string basePath, string path)
     {
-        var basePathUri = new Uri(basePath, UriKind.Absolute);
-        var pathUri = new Uri(path, UriKind.Absolute);
+        var basePathSegments = basePath.Split(Path.PathSeparator, Path.AltDirectorySeparatorChar);
+        var pathSegments = path.Split(Path.PathSeparator, Path.AltDirectorySeparatorChar);
+
+        var commonSegments = 0;
+        for (var i = 0; i < basePathSegments.Length && i < pathSegments.Length; i++)
+        {
+            if (!string.Equals(basePathSegments[i], pathSegments[i], PathStringComparison))
+                break;
+
+            commonSegments++;
+        }
 
-        return Uri.UnescapeDataString(
-            basePathUri
-                .MakeRelativeUri(pathUri)
-                .ToString()
-        );
+        return string.Join("/", pathSegments.Skip(commonSegments));
     }
 }
\ No newline at end of file
diff --git a/GitHubActionsTestLogger/Utils/Polyfills.cs b/GitHubActionsTestLogger/Utils/Polyfills.cs
index c6aa345..15ab163 100644
--- a/GitHubActionsTestLogger/Utils/Polyfills.cs
+++ b/GitHubActionsTestLogger/Utils/Polyfills.cs
@@ -1,4 +1,5 @@
 // ReSharper disable CheckNamespace
+// ReSharper disable InconsistentNaming
 
 #if NETSTANDARD2_0 || NET451
 using System;
@@ -12,12 +13,6 @@ public static bool Contains(this string str, string sub,
         str.IndexOf(sub, comparison) >= 0;
 }
 
-internal static class StringBuilderPolyfills
-{
-    public static StringBuilder AppendJoin<T>(this StringBuilder builder, string separator, IEnumerable<T> source) =>
-        builder.Append(string.Join(separator, source));
-}
-
 namespace System.Collections.Generic
 {
     internal static class CollectionPolyfills
@@ -26,4 +21,25 @@ public static TValue GetValueOrDefault<TKey, TValue>(this IReadOnlyDictionary<TK
             dic.TryGetValue(key!, out var result) ? result! : default!;
     }
 }
+#endif
+
+#if NET451
+namespace System.Runtime.InteropServices
+{
+    internal enum OSPlatform
+    {
+        Windows,
+        Linux,
+        OSX,
+        FreeBSD,
+        NetBSD,
+        Solaris,
+        Unknown
+    }
+
+    internal static class RuntimeInformation
+    {
+        public static bool IsOSPlatform(OSPlatform osPlatform) => osPlatform == OSPlatform.Windows;
+    }
+}
 #endif
\ No newline at end of file