Eigenständige Linux-Anwendung bereitstellen

gui/src/main.rs

@@ -121,6 +121,18 @@ fn setup(data: &Path) -> Result<(), String> {
     fs::remove_file(data.join(".write-test")).map_err(|e| e.to_string())?;
     workflow::init_index(data)
 }
+fn default_data_dir() -> PathBuf {
+    std::env::var_os("XDG_DATA_HOME")
+        .filter(|value| !value.is_empty())
+        .map(PathBuf::from)
+        .or_else(|| {
+            std::env::var_os("HOME")
+                .filter(|value| !value.is_empty())
+                .map(|home| PathBuf::from(home).join(".local/share"))
+        })
+        .unwrap_or_else(|| PathBuf::from("."))
+        .join("csr-intake")
+}
 fn label(key: &str, en: bool) -> String {
     match key {
         "display" => tr(en, "Bildschirm", "Display"),
@@ -1845,12 +1857,20 @@ fn main() -> eframe::Result<()> {
         println!("CS-R Intake {} · {BUILD}", env!("CARGO_PKG_VERSION"));
         return Ok(());
     }
+    if args.iter().any(|a| a == "--help" || a == "-h") {
+        println!(
+            "CS-R Intake {}\nUsage: intake-gui [--data DIRECTORY] [--version]\nDefault data directory: {}",
+            env!("CARGO_PKG_VERSION"),
+            default_data_dir().display()
+        );
+        return Ok(());
+    }
     let data = args
         .iter()
         .position(|a| a == "--data")
         .and_then(|i| args.get(i + 1))
         .map(PathBuf::from)
-        .unwrap_or_else(|| PathBuf::from("/mnt/intake-data"));
+        .unwrap_or_else(default_data_dir);
     eframe::run_native(
         "CS-R Intake",
         eframe::NativeOptions {