use fallback world name

Apparently, the default world of minetest-server does not have a name
set (which is kind of okay because it is the only existing world
anyway). But ModderBaas needs to deal with this situation properly. In
this case, we simply take the directory name, similar to games.

1 files changed, 6 insertions, 0 deletions

diff --git a/src/world.rs b/src/world.rs
index 42a41a4..79ba3f9 100644
--- a/src/world.rs
+++ b/src/world.rs
@@ -37,8 +37,14 @@ impl World {
 
     /// Returns the name of the world.
     pub fn world_name(&self) -> Result<String> {
+        let fallback = self.path
+            .file_name()
+            .map(|s| s.to_str().expect("Non-UTF8 directory encountered"));
+
         let conf = self.conf()?;
         conf.get("world_name")
+            .map(String::as_str)
+            .or(fallback)
             .ok_or_else(|| Error::InvalidWorldDir(self.path.clone()))
             .map(Into::into)
     }