Add license, and expand variables

1 files changed, 20 insertions, 16 deletions

diff --git a/src/preferences/storage.rs b/src/preferences/storage.rs
index 83db786..b61266b 100644
--- a/src/preferences/storage.rs
+++ b/src/preferences/storage.rs
@@ -1,17 +1,18 @@
-// Copyright (C) 2024 Rubén Beltrán del Río
+// Map, wardley map editor for linux
+// Copyright (C) 2026 Rubén Beltrán del Río
 
 // This program is free software: you can redistribute it and/or modify
-// it under the terms of the GNU General Public License as published by
+// it under the terms of the GNU Affero General Public License as published by
 // the Free Software Foundation, either version 3 of the License, or
 // (at your option) any later version.
 
 // This program is distributed in the hope that it will be useful,
 // but WITHOUT ANY WARRANTY; without even the implied warranty of
 // MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
-// GNU General Public License for more details.
+// GNU Affero General Public License for more details.
 
-// You should have received a copy of the GNU General Public License
-// along with this program. If not, see https://map.tranquil.systems.
+// You should have received a copy of the GNU Affero General Public License
+// along with this program.  If not, see <http://www.gnu.org/licenses/>.
 
 use std::fs;
 use std::path::PathBuf;
@@ -47,30 +48,30 @@ pub fn load() -> UserPreferences {
 }
 
 /// Saves preferences to disk
-pub fn save(prefs: &UserPreferences) -> Result<(), std::io::Error> {
+pub fn save(preferences: &UserPreferences) -> Result<(), std::io::Error> {
     let path = preferences_path();
 
     if let Some(parent) = path.parent() {
         fs::create_dir_all(parent)?;
     }
 
-    let content = serde_json::to_string_pretty(prefs).map_err(std::io::Error::other)?;
+    let content = serde_json::to_string_pretty(preferences).map_err(std::io::Error::other)?;
 
     fs::write(path, content)
 }
 
 /// Exports preferences to JSON string (for file export)
-pub fn export_json(prefs: &UserPreferences) -> Option<String> {
-    let json_prefs = prefs.to_json();
-    serde_json::to_string_pretty(&json_prefs).ok()
+pub fn export_json(preferences: &UserPreferences) -> Option<String> {
+    let json_preferences = preferences.to_json();
+    serde_json::to_string_pretty(&json_preferences).ok()
 }
 
 /// Imports preferences from JSON string (partial updates supported)
 /// Returns true on success, false on parse error
-pub fn import_json(prefs: &mut UserPreferences, json: &str) -> bool {
+pub fn import_json(preferences: &mut UserPreferences, json: &str) -> bool {
     match serde_json::from_str::<UserPreferencesJson>(json) {
         Ok(imported) => {
-            prefs.update_from_json(&imported);
+            preferences.update_from_json(&imported);
             true
         }
         Err(_) => false,
@@ -78,16 +79,19 @@ pub fn import_json(prefs: &mut UserPreferences, json: &str) -> bool {
 }
 
 /// Saves preferences to a specific file path (for export dialog)
-pub fn export_to_file(prefs: &UserPreferences, path: &PathBuf) -> Result<(), std::io::Error> {
+pub fn export_to_file(preferences: &UserPreferences, path: &PathBuf) -> Result<(), std::io::Error> {
     let content =
-        export_json(prefs).ok_or_else(|| std::io::Error::other("Serialization failed"))?;
+        export_json(preferences).ok_or_else(|| std::io::Error::other("Serialization failed"))?;
     fs::write(path, content)
 }
 
 /// Loads preferences from a specific file path (for import dialog)
-pub fn import_from_file(prefs: &mut UserPreferences, path: &PathBuf) -> Result<(), std::io::Error> {
+pub fn import_from_file(
+    preferences: &mut UserPreferences,
+    path: &PathBuf,
+) -> Result<(), std::io::Error> {
     let content = fs::read_to_string(path)?;
-    if import_json(prefs, &content) {
+    if import_json(preferences, &content) {
         Ok(())
     } else {
         Err(std::io::Error::new(