fs/Path: rename GetSuffix() to GetExtension()

The "extension" is the name after the dot, but the "suffix" is the
string including the dot.

src/TagFile.cxx

@@ -77,7 +77,7 @@ ScanFileTagsNoGeneric(Path path_fs, TagHandler &handler)
 
 	/* check if there's a suffix and a plugin */
 
-	const auto *suffix = path_fs.GetSuffix();
+	const auto *suffix = path_fs.GetExtension();
 	if (suffix == nullptr)
 		return false;
 

src/decoder/plugins/GmeDecoderPlugin.cxx

@@ -113,7 +113,7 @@ static AllocatedPath
 ReplaceSuffix(Path src,
 	      const PathTraitsFS::const_pointer new_suffix) noexcept
 {
-	const auto *old_suffix = src.GetSuffix();
+	const auto *old_suffix = src.GetExtension();
 	if (old_suffix == nullptr)
 		return nullptr;
 
@@ -322,7 +322,7 @@ gme_container_scan(Path path_fs)
 	if (num_songs < 2)
 		return list;
 
-	const auto *subtune_suffix = path_fs.GetSuffix();
+	const auto *subtune_suffix = path_fs.GetExtension();
 
 	TagBuilder tag_builder;
 

src/fs/AllocatedPath.hxx

@@ -296,8 +296,8 @@ public:
 	}
 
 	[[gnu::pure]]
-	const_pointer GetSuffix() const noexcept {
-		return Path{*this}.GetSuffix();
+	const_pointer GetExtension() const noexcept {
+		return Path{*this}.GetExtension();
 	}
 
 	/**

src/fs/Path.cxx

@@ -37,7 +37,7 @@ Path::ToUTF8Throw() const
 }
 
 Path::const_pointer
-Path::GetSuffix() const noexcept
+Path::GetExtension() const noexcept
 {
 	const auto base = GetBase().c_str();
 	const auto *dot = StringFindLast(base, '.');

src/fs/Path.hxx

@@ -167,7 +167,7 @@ public:
 	}
 
 	[[gnu::pure]]
-	const_pointer GetSuffix() const noexcept;
+	const_pointer GetExtension() const noexcept;
 };
 
 /**

src/input/plugins/ArchiveInputPlugin.cxx

@@ -49,7 +49,7 @@ OpenArchiveInputStream(Path path, Mutex &mutex)
 		return nullptr;
 	}
 
-	const char *suffix = l.archive.GetSuffix();
+	const char *suffix = l.archive.GetExtension();
 	if (suffix == nullptr)
 		return nullptr;
 

src/playlist/PlaylistStream.cxx

@@ -34,7 +34,7 @@ playlist_open_path_suffix(Path path, Mutex &mutex)
 try {
 	assert(!path.IsNull());
 
-	const auto *suffix = path.GetSuffix();
+	const auto *suffix = path.GetExtension();
 	if (suffix == nullptr)
 		return nullptr;