230411

YANLib/YANJson.cs

@@ -0,0 +1,94 @@
+using System.Text;
+using System.Text.Json;
+using static System.Text.Json.JsonNamingPolicy;
+
+namespace YANLib;
+
+public static partial class YANJson
+{
+    public static string Serialize<T>(this T mdl) where T : class => JsonSerializer.Serialize(mdl);
+
+    public static async IAsyncEnumerable<string> Serialize<T>(this IEnumerable<T> mdls) where T : class
+    {
+        if (mdls is not null && mdls.Any())
+        {
+            var opts = new JsonSerializerOptions();
+            foreach (var mdl in mdls)
+            {
+                await using var stream = new MemoryStream();
+                await using (var writer = new Utf8JsonWriter(stream))
+                {
+                    JsonSerializer.Serialize(writer, mdl, opts);
+                }
+                yield return Encoding.UTF8.GetString(stream.ToArray());
+            }
+        }
+        else
+        {
+            yield break;
+        }
+    }
+
+    public static string SerializeCamel<T>(this T mdl) where T : class => JsonSerializer.Serialize(mdl, new JsonSerializerOptions
+    {
+        PropertyNamingPolicy = CamelCase,
+        PropertyNameCaseInsensitive = false
+    });
+
+    public static T? Deserialize<T>(this string str) where T : class
+    {
+        try
+        {
+            return JsonSerializer.Deserialize<T>(str);
+        }
+        catch
+        {
+            return default;
+        }
+    }
+
+    public static T? DeserializeCamel<T>(this string str) where T : class
+    {
+        try
+        {
+            return JsonSerializer.Deserialize<T>(str, new JsonSerializerOptions
+            {
+                PropertyNamingPolicy = CamelCase,
+                PropertyNameCaseInsensitive = false
+            });
+        }
+        catch
+        {
+            return default;
+        }
+    }
+
+    public static T? DeserializeStandard<T>(this string str) where T : class
+    {
+        T? rslt;
+        try
+        {
+            rslt = JsonSerializer.Deserialize<T>(str);
+        }
+        catch
+        {
+            rslt = default;
+        }
+        if (rslt == null || rslt.AllPropertiesDefault())
+        {
+            try
+            {
+                rslt = JsonSerializer.Deserialize<T>(str, new JsonSerializerOptions
+                {
+                    PropertyNamingPolicy = CamelCase,
+                    PropertyNameCaseInsensitive = false
+                });
+            }
+            catch
+            {
+                rslt = default;
+            }
+        }
+        return rslt;
+    }
+}