Added a bunch of utilities and modfief the character data structue

Packages/com.jovian.logger/Editor/JovianProjectSettings.cs

@@ -0,0 +1,67 @@
+using System.IO;
+using Newtonsoft.Json;
+using Newtonsoft.Json.Linq;
+using UnityEngine;
+
+namespace Jovian.ProjectSettings {
+    /// <summary>
+    /// Reads and writes settings to ProjectSettings/CustomLoggerSettings.json.
+    /// Flat key-value store. Use prefixed keys by convention (e.g. "logger.myKey").
+    /// </summary>
+    internal static class JovianProjectSettings {
+        private const string FileName = "CustomLoggerSettings.json";
+
+        private static string FilePath {
+            get {
+                var fullName = Directory.GetParent(Application.dataPath)?.FullName;
+                return Path.Combine(fullName ?? Application.dataPath, "ProjectSettings", FileName);
+            }
+        }
+
+        internal static T Get<T>(string packagePrefix, string setting, T defaultValue) {
+            var root = LoadRoot();
+            var key = $"{packagePrefix}.{setting}";
+            if (root.TryGetValue(key, out var token)) {
+                try {
+                    return token.ToObject<T>();
+                } catch {
+                    return defaultValue;
+                }
+            }
+
+            return defaultValue;
+        }
+
+        internal static void Set<T>(string packagePrefix, string setting, T value) {
+            var root = LoadRoot();
+            var key = $"{packagePrefix}.{setting}";
+            root[key] = value != null ? JToken.FromObject(value) : JValue.CreateNull();
+            SaveRoot(root);
+        }
+
+        private static JObject LoadRoot() {
+            string path = FilePath;
+            if (!File.Exists(path)) {
+                return new JObject();
+            }
+
+            try {
+                string json = File.ReadAllText(path);
+                return JObject.Parse(json);
+            } catch {
+                return new JObject();
+            }
+        }
+
+        private static void SaveRoot(JObject root) {
+            string path = FilePath;
+            string dir = Path.GetDirectoryName(path);
+            if (!string.IsNullOrEmpty(dir) && !Directory.Exists(dir)) {
+                Directory.CreateDirectory(dir);
+            }
+
+            string json = root.ToString(Formatting.Indented);
+            File.WriteAllText(path, json);
+        }
+    }
+}