Move config loading logic to config.rs

Config loading was complexity that shouldn't be in main.

src/config.rs

@@ -1123,7 +1123,43 @@ impl Config {
         self.hide_cursor_when_typing
     }
 
-    pub fn load_from<P: Into<PathBuf>>(path: P) -> Result<Config> {
+    /// Load configuration
+    ///
+    /// If a configuration file is given as a command line argument we don't
+    /// generate a default file. If an empty configuration file is given, i.e.
+    /// /dev/null, we load the compiled-in defaults.
+    pub fn load(options: &::cli::Options) -> Config {
+        let config_path = options.config_path()
+            .or_else(|| Config::installed_config())
+            .unwrap_or_else(|| {
+                Config::write_defaults()
+                    .unwrap_or_else(|err| die!("Write defaults config failure: {}", err))
+            });
+
+        Config::load_from(&*config_path)
+            .map(|config| {
+                if let Some(path) = config.path().as_ref() {
+                    info!("Config loaded from {}", path.display());
+                }
+
+                config
+            })
+            .unwrap_or_else(|err| {
+                use self::Error::*;
+                match err {
+                    NotFound => {
+                        die!("Config file not found at: {}", config_path.display());
+                    },
+                    Empty => {
+                        err_println!("Empty config; Loading defaults");
+                        Config::default()
+                    },
+                    _ => die!("{}", err),
+                }
+            })
+    }
+
+    fn load_from<P: Into<PathBuf>>(path: P) -> Result<Config> {
         let path = path.into();
         let raw = Config::read_file(path.as_path())?;
         let mut config: Config = serde_yaml::from_str(&raw)?;

src/main.rs

@@ -37,55 +37,29 @@ use alacritty::tty::{self, process_should_exit};
 use alacritty::util::fmt::Red;
 
 fn main() {
-    // Load command line options and config
-    let options = cli::Options::load();
-    let config = load_config(&options);
-
     // Run alacritty
-    if let Err(err) = run(config, options) {
+    if let Err(err) = run() {
-        die!("Alacritty encountered an unrecoverable error:\n\n\t{}\n", Red(err));
+        die!("Encountered an unrecoverable error:\n\n\t{}\n", Red(err));
     }
 
     info!("Goodbye.");
 }
 
-/// Load configuration
-///
-/// If a configuration file is given as a command line argument we don't
-/// generate a default file. If an empty configuration file is given, i.e.
-/// /dev/null, we load the compiled-in defaults.
-fn load_config(options: &cli::Options) -> Config {
-    let config_path = options.config_path()
-        .or_else(|| Config::installed_config())
-        .unwrap_or_else(|| {
-            Config::write_defaults()
-                .unwrap_or_else(|err| die!("Write defaults config failure: {}", err))
-        });
-
-    Config::load_from(&*config_path).unwrap_or_else(|err| {
-        match err {
-            config::Error::NotFound => {
-                die!("Config file not found at: {}", config_path.display());
-            },
-            config::Error::Empty => {
-                err_println!("Empty config; Loading defaults");
-                Config::default()
-            },
-            _ => die!("{}", err),
-        }
-    })
-}
-
 /// Run Alacritty
 ///
 /// Creates a window, the terminal state, pty, I/O event loop, input processor,
 /// config change monitor, and runs the main display loop.
-fn run(mut config: Config, options: cli::Options) -> Result<(), Box<Error>> {
+fn run() -> Result<(), Box<Error>> {
-    // Initialize the logger first as to capture output from other subsystems
+    // Load command line options
-    logging::initialize(&options)?;
+    let options = cli::Options::load();
 
+    // Initialize the logger ASAP
+    logging::initialize(&options)?;
     info!("Welcome to Alacritty.");
 
+    // Load config
+    let mut config = Config::load(&options);
+
     // Create a display.
     //
     // The display manages a window and can draw the terminal