PlaylistFile: use TruncateFile()

As a side effect, "playlistclear" no longer creates a new playlist if the given one doesn't yet exist.

PlaylistFile: use TruncateFile()
b6b8fb7d · Max Kellermann · 2bca3cd2 · b6b8fb7d
Commit b6b8fb7d authored Aug 15, 2016 by Max Kellermann
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Showing with 9 additions and 5 deletions

PlaylistFile.cxx src/PlaylistFile.cxx +9 -5

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--- a/src/PlaylistFile.cxx
+++ b/src/PlaylistFile.cxx
@@ -302,11 +302,15 @@ spl_clear(const char *utf8path)
 	const auto path_fs = spl_map_to_fs(utf8path);
 	assert(!path_fs.IsNull());
-	FILE *file = FOpen(path_fs, FOpenMode::WriteText);
+	try {
-	if (file == nullptr)
+		TruncateFile(path_fs);
-		ThrowPlaylistErrno();
+	} catch (const std::system_error &e) {
+		if (IsFileNotFound(e))
-	fclose(file);
+			throw PlaylistError(PlaylistResult::NO_SUCH_LIST,
+					    "No such playlist");
+		else
+			throw;
+	}
 	idle_add(IDLE_STORED_PLAYLIST);
 }