Fix csharp project dir detection in submissions

Cargo.toml

@@ -22,7 +22,7 @@ authors = [
 edition = "2021"
 license = "MIT OR Apache-2.0"
 rust-version = "1.70.0"
-version = "0.36.4"
+version = "0.37.0"
 
 [workspace.dependencies]
 mooc-langs-api = { git = "https://github.com/rage/secret-project-331.git", rev = "9fb5f894c72932e77dafa6d0f00df7a8abdfa84c" }

crates/plugins/csharp/src/plugin.rs

@@ -132,7 +132,7 @@ impl CSharpPlugin {
 }
 
 /// Project directory:
-/// Contains a src directory which contains a .csproj file (which may be inside a subdirectory).
+/// Contains a src directory which contains a .cs or .csproj file (which may be inside a subdirectory).
 impl LanguagePlugin for CSharpPlugin {
     const PLUGIN_NAME: &'static str = "csharp";
     const DEFAULT_SANDBOX_IMAGE: &'static str = "eu.gcr.io/moocfi-public/tmc-sandbox-csharp:latest";
@@ -145,7 +145,10 @@ impl LanguagePlugin for CSharpPlugin {
             .max_depth(2)
             .into_iter()
             .filter_map(|e| e.ok())
-            .any(|e| e.path().extension() == Some(&OsString::from("csproj")))
+            .any(|e| {
+                let ext = e.path().extension();
+                ext == Some(&OsString::from("cs")) || ext == Some(&OsString::from("csproj"))
+            })
     }
 
     fn find_project_dir_in_archive<R: Read + Seek>(
@@ -155,9 +158,10 @@ impl LanguagePlugin for CSharpPlugin {
         let project_dir = loop {
             let next = iter.with_next(|entry| {
                 let file_path = entry.path()?;
+                let ext = file_path.extension();
 
                 if entry.is_file()
-                    && file_path.extension() == Some(OsStr::new("csproj"))
+                    && (ext == Some(OsStr::new("cs")) || ext == Some(OsStr::new("csproj")))
                     && !file_path.components().any(|c| c.as_os_str() == "__MACOSX")
                 {
                     if let Some(parent) = file_path.parent() {

crates/tmc-langs-cli/src/lib.rs

@@ -621,7 +621,7 @@ fn run_tmc_inner(
             output_path,
         } => {
             let mut output_lock = Lock::dir(&output_path, file_util::LockOptions::Write)?;
-            let _output_guard = output_lock.lock()?;
+            let output_guard = output_lock.lock()?;
 
             tmc_langs::download_old_submission(
                 client,
@@ -630,6 +630,8 @@ fn run_tmc_inner(
                 submission_id,
                 save_old_state,
             )?;
+            drop(output_guard);
+            output_lock.forget();
             CliOutput::finished("extracted project")
         }
 

crates/tmc-langs-util/src/file_util/lock_unix.rs

@@ -17,6 +17,7 @@ pub struct Lock {
     pub path: PathBuf,
     options: LockOptions,
     lock_file_path: Option<PathBuf>,
+    forget: bool,
 }
 
 impl Lock {
@@ -32,6 +33,7 @@ impl Lock {
             path,
             options,
             lock_file_path: None,
+            forget: false,
         })
     }
 
@@ -56,6 +58,7 @@ impl Lock {
             path,
             options,
             lock_file_path: Some(lock_path),
+            forget: false,
         })
     }
 
@@ -84,10 +87,18 @@ impl Lock {
         };
         Ok(Guard { lock, path })
     }
+
+    pub fn forget(mut self) {
+        self.forget = true;
+    }
 }
 
 impl Drop for Lock {
     fn drop(&mut self) {
+        if self.forget {
+            return;
+        }
+
         // check if we created a lock file
         if let Some(lock_file_path) = self.lock_file_path.take() {
             // try to get a write lock and delete file

crates/tmc-langs-util/src/file_util/lock_windows.rs

@@ -121,6 +121,11 @@ impl Lock {
             path: Cow::Borrowed(&self.path),
         })
     }
+
+    pub fn forget(self) {
+        let _self = self;
+        // no-op on windows
+    }
 }
 
 pub struct Guard<'a> {