init: 导入项目到 meswork Gitea

Common/00-1Json8.3/Json8.3/Converters/BinaryConverter.cs

@@ -0,0 +1,201 @@
+#region License
+// Copyright (c) 2007 James Newton-King
+//
+// Permission is hereby granted, free of charge, to any person
+// obtaining a copy of this software and associated documentation
+// files (the "Software"), to deal in the Software without
+// restriction, including without limitation the rights to use,
+// copy, modify, merge, publish, distribute, sublicense, and/or sell
+// copies of the Software, and to permit persons to whom the
+// Software is furnished to do so, subject to the following
+// conditions:
+//
+// The above copyright notice and this permission notice shall be
+// included in all copies or substantial portions of the Software.
+//
+// THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND,
+// EXPRESS OR IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES
+// OF MERCHANTABILITY, FITNESS FOR A PARTICULAR PURPOSE AND
+// NONINFRINGEMENT. IN NO EVENT SHALL THE AUTHORS OR COPYRIGHT
+// HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER LIABILITY,
+// WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING
+// FROM, OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR
+// OTHER DEALINGS IN THE SOFTWARE.
+#endregion
+
+#if !(DOTNET || PORTABLE40 || PORTABLE)
+using System;
+using System.Data.SqlTypes;
+using System.Globalization;
+using Newtonsoft.Json.Utilities;
+using System.Collections.Generic;
+
+namespace Newtonsoft.Json.Converters
+{
+    /// <summary>
+    /// Converts a binary value to and from a base 64 string value.
+    /// </summary>
+    public class BinaryConverter : JsonConverter
+    {
+#if !NET20
+        private const string BinaryTypeName = "System.Data.Linq.Binary";
+        private const string BinaryToArrayName = "ToArray";
+        private ReflectionObject _reflectionObject;
+#endif
+
+        /// <summary>
+        /// Writes the JSON representation of the object.
+        /// </summary>
+        /// <param name="writer">The <see cref="JsonWriter"/> to write to.</param>
+        /// <param name="value">The value.</param>
+        /// <param name="serializer">The calling serializer.</param>
+        public override void WriteJson(JsonWriter writer, object value, JsonSerializer serializer)
+        {
+            if (value == null)
+            {
+                writer.WriteNull();
+                return;
+            }
+
+            byte[] data = GetByteArray(value);
+
+            writer.WriteValue(data);
+        }
+
+        private byte[] GetByteArray(object value)
+        {
+#if !(NET20)
+            if (value.GetType().AssignableToTypeName(BinaryTypeName))
+            {
+                EnsureReflectionObject(value.GetType());
+                return (byte[])_reflectionObject.GetValue(value, BinaryToArrayName);
+            }
+#endif
+            if (value is SqlBinary)
+            {
+                return ((SqlBinary)value).Value;
+            }
+
+            throw new JsonSerializationException("Unexpected value type when writing binary: {0}".FormatWith(CultureInfo.InvariantCulture, value.GetType()));
+        }
+
+#if !NET20
+        private void EnsureReflectionObject(Type t)
+        {
+            if (_reflectionObject == null)
+            {
+                _reflectionObject = ReflectionObject.Create(t, t.GetConstructor(new[] { typeof(byte[]) }), BinaryToArrayName);
+            }
+        }
+#endif
+
+        /// <summary>
+        /// Reads the JSON representation of the object.
+        /// </summary>
+        /// <param name="reader">The <see cref="JsonReader"/> to read from.</param>
+        /// <param name="objectType">Type of the object.</param>
+        /// <param name="existingValue">The existing value of object being read.</param>
+        /// <param name="serializer">The calling serializer.</param>
+        /// <returns>The object value.</returns>
+        public override object ReadJson(JsonReader reader, Type objectType, object existingValue, JsonSerializer serializer)
+        {
+            if (reader.TokenType == JsonToken.Null)
+            {
+                if (!ReflectionUtils.IsNullable(objectType))
+                {
+                    throw JsonSerializationException.Create(reader, "Cannot convert null value to {0}.".FormatWith(CultureInfo.InvariantCulture, objectType));
+                }
+
+                return null;
+            }
+
+            byte[] data;
+
+            if (reader.TokenType == JsonToken.StartArray)
+            {
+                data = ReadByteArray(reader);
+            }
+            else if (reader.TokenType == JsonToken.String)
+            {
+                // current token is already at base64 string
+                // unable to call ReadAsBytes so do it the old fashion way
+                string encodedData = reader.Value.ToString();
+                data = Convert.FromBase64String(encodedData);
+            }
+            else
+            {
+                throw JsonSerializationException.Create(reader, "Unexpected token parsing binary. Expected String or StartArray, got {0}.".FormatWith(CultureInfo.InvariantCulture, reader.TokenType));
+            }
+
+            Type t = (ReflectionUtils.IsNullableType(objectType))
+                ? Nullable.GetUnderlyingType(objectType)
+                : objectType;
+
+#if !NET20
+            if (t.AssignableToTypeName(BinaryTypeName))
+            {
+                EnsureReflectionObject(t);
+
+                return _reflectionObject.Creator(data);
+            }
+#endif
+
+            if (t == typeof(SqlBinary))
+            {
+                return new SqlBinary(data);
+            }
+
+            throw JsonSerializationException.Create(reader, "Unexpected object type when writing binary: {0}".FormatWith(CultureInfo.InvariantCulture, objectType));
+        }
+
+        private byte[] ReadByteArray(JsonReader reader)
+        {
+            List<byte> byteList = new List<byte>();
+
+            while (reader.Read())
+            {
+                switch (reader.TokenType)
+                {
+                    case JsonToken.Integer:
+                        byteList.Add(Convert.ToByte(reader.Value, CultureInfo.InvariantCulture));
+                        break;
+                    case JsonToken.EndArray:
+                        return byteList.ToArray();
+                    case JsonToken.Comment:
+                        // skip
+                        break;
+                    default:
+                        throw JsonSerializationException.Create(reader, "Unexpected token when reading bytes: {0}".FormatWith(CultureInfo.InvariantCulture, reader.TokenType));
+                }
+            }
+
+            throw JsonSerializationException.Create(reader, "Unexpected end when reading bytes.");
+        }
+
+        /// <summary>
+        /// Determines whether this instance can convert the specified object type.
+        /// </summary>
+        /// <param name="objectType">Type of the object.</param>
+        /// <returns>
+        /// 	<c>true</c> if this instance can convert the specified object type; otherwise, <c>false</c>.
+        /// </returns>
+        public override bool CanConvert(Type objectType)
+        {
+#if !NET20
+            if (objectType.AssignableToTypeName(BinaryTypeName))
+            {
+                return true;
+            }
+#endif
+
+            if (objectType == typeof(SqlBinary) || objectType == typeof(SqlBinary?))
+            {
+                return true;
+            }
+
+            return false;
+        }
+    }
+}
+
+#endif