From 20bbe1b57b3349c20ca17d675444b1f8a8edb76f Mon Sep 17 00:00:00 2001
From: Max Kellermann <max.kellermann@gmail.com>
Date: Wed, 6 Sep 2023 14:50:34 +0200
Subject: [PATCH] fs/Traits: add GetFilenameSuffix() overload with
 std::string_view

---
 src/fs/Traits.hxx | 16 ++++++++++++++++
 1 file changed, 16 insertions(+)

diff --git a/src/fs/Traits.hxx b/src/fs/Traits.hxx
index c14aa3f08..57f4814b0 100644
--- a/src/fs/Traits.hxx
+++ b/src/fs/Traits.hxx
@@ -92,6 +92,14 @@ struct PathTraitsFS {
 			: nullptr;
 	}
 
+	[[gnu::pure]]
+	static string_view GetFilenameSuffix(string_view filename) noexcept {
+		const auto dot = filename.rfind('.');
+		return dot != filename.npos && dot > 0
+			? filename.substr(dot + 1)
+			: string_view{};
+	}
+
 	[[gnu::pure]]
 	static const_pointer GetPathSuffix(const_pointer path) noexcept {
 		return GetFilenameSuffix(GetBase(path));
@@ -228,6 +236,14 @@ struct PathTraitsUTF8 {
 			: nullptr;
 	}
 
+	[[gnu::pure]]
+	static string_view GetFilenameSuffix(string_view filename) noexcept {
+		const auto dot = filename.rfind('.');
+		return dot != filename.npos && dot > 0
+			? filename.substr(dot + 1)
+			: string_view{};
+	}
+
 	[[gnu::pure]]
 	static const_pointer GetPathSuffix(const_pointer path) noexcept {
 		return GetFilenameSuffix(GetBase(path));