515 lines
20 KiB
C#
515 lines
20 KiB
C#
#region License
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// Copyright (c) 2007 James Newton-King
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//
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// Permission is hereby granted, free of charge, to any person
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// obtaining a copy of this software and associated documentation
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// files (the "Software"), to deal in the Software without
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// restriction, including without limitation the rights to use,
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// copy, modify, merge, publish, distribute, sublicense, and/or sell
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// copies of the Software, and to permit persons to whom the
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// Software is furnished to do so, subject to the following
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// conditions:
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//
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// The above copyright notice and this permission notice shall be
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// included in all copies or substantial portions of the Software.
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//
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// THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND,
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// EXPRESS OR IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES
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// OF MERCHANTABILITY, FITNESS FOR A PARTICULAR PURPOSE AND
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// NONINFRINGEMENT. IN NO EVENT SHALL THE AUTHORS OR COPYRIGHT
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// HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER LIABILITY,
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// WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING
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// FROM, OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR
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// OTHER DEALINGS IN THE SOFTWARE.
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#endregion
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using System;
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using System.Collections.Generic;
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using System.Globalization;
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using System.IO;
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using System.Text;
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using System.Xml;
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using Newtonsoft.Json.Linq;
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#if DNXCORE50
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using Xunit;
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using Test = Xunit.FactAttribute;
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using Assert = Newtonsoft.Json.Tests.XUnitAssert;
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#else
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using NUnit.Framework;
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#endif
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#if !(DNXCORE50 || NET20) || NETSTANDARD1_3 || NETSTANDARD2_0 || NET6_0_OR_GREATER
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namespace Newtonsoft.Json.Tests.Documentation.Samples.Json
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{
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#region Types
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public class XmlJsonReader : JsonReader
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{
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private readonly Stack<JTokenType> _stateStack;
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private readonly XmlReader _reader;
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private JTokenType? _valueType;
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public XmlJsonReader(XmlReader reader)
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{
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_reader = reader;
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_stateStack = new Stack<JTokenType>();
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}
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private JTokenType PeekState()
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{
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JTokenType current = (_stateStack.Count > 0) ? _stateStack.Peek() : JTokenType.None;
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return current;
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}
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public override bool Read()
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{
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if (HandleValueType())
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{
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return true;
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}
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while (_reader.Read())
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{
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switch (_reader.NodeType)
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{
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case XmlNodeType.Element:
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string typeName = _reader.GetAttribute("type");
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if (typeName == null)
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{
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throw new Exception("No type specified.");
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}
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_valueType = (JTokenType)Enum.Parse(typeof(JTokenType), typeName, true);
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switch (PeekState())
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{
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case JTokenType.None:
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HandleValueType();
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return true;
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case JTokenType.Object:
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SetToken(JsonToken.PropertyName, _reader.LocalName);
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_stateStack.Push(JTokenType.Property);
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return true;
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case JTokenType.Array:
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case JTokenType.Constructor:
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continue;
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default:
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throw new ArgumentOutOfRangeException();
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}
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case XmlNodeType.EndElement:
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switch (_stateStack.Peek())
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{
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case JTokenType.Object:
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SetToken(JsonToken.EndObject);
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_stateStack.Pop();
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if (PeekState() == JTokenType.Property)
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{
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_stateStack.Pop();
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}
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return true;
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case JTokenType.Array:
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SetToken(JsonToken.EndArray);
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_stateStack.Pop();
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if (PeekState() == JTokenType.Property)
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{
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_stateStack.Pop();
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}
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return true;
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case JTokenType.Constructor:
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SetToken(JsonToken.EndConstructor);
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_stateStack.Pop();
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if (PeekState() == JTokenType.Property)
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{
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_stateStack.Pop();
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}
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return true;
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}
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_stateStack.Pop();
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if (PeekState() == JTokenType.Property)
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{
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_stateStack.Pop();
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}
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break;
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case XmlNodeType.Text:
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case XmlNodeType.CDATA:
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switch (_valueType)
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{
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case JTokenType.Integer:
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SetToken(JsonToken.Integer, Convert.ToInt64(_reader.Value, CultureInfo.InvariantCulture));
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break;
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case JTokenType.Float:
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SetToken(JsonToken.Float, Convert.ToDouble(_reader.Value, CultureInfo.InvariantCulture));
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break;
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case JTokenType.String:
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case JTokenType.Uri:
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case JTokenType.TimeSpan:
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case JTokenType.Guid:
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SetToken(JsonToken.String, _reader.Value);
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break;
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case JTokenType.Boolean:
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SetToken(JsonToken.Boolean, Convert.ToBoolean(_reader.Value, CultureInfo.InvariantCulture));
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break;
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case JTokenType.Date:
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SetToken(JsonToken.Date, Convert.ToDateTime(_reader.Value, CultureInfo.InvariantCulture));
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break;
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case JTokenType.Bytes:
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SetToken(JsonToken.Bytes, Convert.FromBase64String(_reader.Value));
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break;
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default:
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throw new ArgumentOutOfRangeException();
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}
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_stateStack.Push(_valueType.Value);
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return true;
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default:
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throw new ArgumentOutOfRangeException();
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}
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}
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return false;
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}
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private bool HandleValueType()
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{
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switch (_valueType)
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{
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case JTokenType.Null:
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SetToken(JsonToken.Null);
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_valueType = null;
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if (PeekState() == JTokenType.Property)
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{
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_stateStack.Pop();
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}
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return true;
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case JTokenType.Object:
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SetToken(JsonToken.StartObject);
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_stateStack.Push(JTokenType.Object);
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_valueType = null;
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return true;
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case JTokenType.Array:
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SetToken(JsonToken.StartArray);
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_stateStack.Push(JTokenType.Array);
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_valueType = null;
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return true;
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case JTokenType.Constructor:
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string constructorName = _reader.GetAttribute("name");
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if (constructorName == null)
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{
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throw new Exception("No constructor name specified.");
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}
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SetToken(JsonToken.StartConstructor, constructorName);
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_stateStack.Push(JTokenType.Constructor);
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_valueType = null;
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return true;
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}
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return false;
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}
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public override int? ReadAsInt32()
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{
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if (!Read())
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{
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return null;
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}
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return (Value != null) ? (int?)Convert.ToInt32(Value) : null;
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}
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public override string ReadAsString()
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{
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if (!Read())
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{
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return null;
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}
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return (string)Value;
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}
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public override byte[] ReadAsBytes()
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{
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if (!Read())
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{
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return null;
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}
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return (byte[])Value;
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}
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public override decimal? ReadAsDecimal()
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{
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if (!Read())
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{
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return null;
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}
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return (Value != null) ? (decimal?)Convert.ToDecimal(Value) : null;
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}
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public override DateTime? ReadAsDateTime()
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{
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if (!Read())
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{
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return null;
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}
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return (Value != null) ? (DateTime?)Convert.ToDateTime(Value) : null;
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}
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public override DateTimeOffset? ReadAsDateTimeOffset()
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{
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if (!Read())
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{
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return null;
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}
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return (Value != null) ? (DateTimeOffset?)Convert.ToDateTime(Value) : null;
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}
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}
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#endregion
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[TestFixture]
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public class CustomJsonReader : TestFixtureBase
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{
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[Test]
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public void Example()
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{
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#region Usage
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string xml = @"<Root type=""Object"">
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<Null type=""Null"" />
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<String type=""String"">This is a string!</String>
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<Char type=""String"">!</Char>
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<Integer type=""Integer"">123</Integer>
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<DateTime type=""Date"">2001-02-22T20:59:59Z</DateTime>
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<DateTimeOffset type=""Date"">2001-02-22T20:59:59+12:00</DateTimeOffset>
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<Float type=""Float"">1.1</Float>
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<Double type=""Float"">3.14</Double>
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<Decimal type=""Float"">19.95</Decimal>
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<Guid type=""Guid"">d66eab59-3715-4b35-9e06-fa61c1216eaa</Guid>
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<Uri type=""Uri"">http://james.newtonking.com</Uri>
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<Array type=""Array"">
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<Item type=""Integer"">1</Item>
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<Item type=""Bytes"">SGVsbG8gd29ybGQh</Item>
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<Item type=""Boolean"">True</Item>
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</Array>
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<Object type=""Object"">
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<String type=""String"">This is a string!</String>
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<Null type=""Null"" />
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</Object>
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<Constructor type=""Constructor"" name=""Date"">
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<Item type=""Integer"">2000</Item>
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<Item type=""Integer"">12</Item>
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<Item type=""Integer"">30</Item>
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</Constructor>
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</Root>";
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StringReader sr = new StringReader(xml);
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using (XmlReader xmlReader = XmlReader.Create(sr, new XmlReaderSettings { IgnoreWhitespace = true }))
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using (XmlJsonReader reader = new XmlJsonReader(xmlReader))
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{
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JObject o = JObject.Load(reader);
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//{
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// "Null": null,
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// "String": "This is a string!",
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// "Char": "!",
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// "Integer": 123,
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// "DateTime": "2001-02-23T09:59:59+13:00",
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// "DateTimeOffset": "2001-02-22T21:59:59+13:00",
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// "Float": 1.1,
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// "Double": 3.14,
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// "Decimal": 19.95,
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// "Guid": "d66eab59-3715-4b35-9e06-fa61c1216eaa",
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// "Uri": "http://james.newtonking.com",
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// "Array": [
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// 1,
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// "SGVsbG8gd29ybGQh",
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// true
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// ],
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// "Object": {
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// "String": "This is a string!",
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// "Null": null
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// },
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// "Constructor": new Date(2000, 12, 30)
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//}
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}
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#endregion
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using (XmlReader xmlReader = XmlReader.Create(new StringReader(xml), new XmlReaderSettings { IgnoreWhitespace = true }))
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using (XmlJsonReader reader = new XmlJsonReader(xmlReader))
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{
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Assert.IsTrue(reader.Read());
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Assert.AreEqual(JsonToken.StartObject, reader.TokenType);
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Assert.IsTrue(reader.Read());
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Assert.AreEqual(JsonToken.PropertyName, reader.TokenType);
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Assert.AreEqual("Null", reader.Value);
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Assert.IsTrue(reader.Read());
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Assert.AreEqual(JsonToken.Null, reader.TokenType);
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Assert.IsTrue(reader.Read());
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Assert.AreEqual(JsonToken.PropertyName, reader.TokenType);
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Assert.AreEqual("String", reader.Value);
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Assert.IsTrue(reader.Read());
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Assert.AreEqual(JsonToken.String, reader.TokenType);
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Assert.AreEqual("This is a string!", reader.Value);
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Assert.IsTrue(reader.Read());
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Assert.AreEqual(JsonToken.PropertyName, reader.TokenType);
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Assert.AreEqual("Char", reader.Value);
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Assert.IsTrue(reader.Read());
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Assert.AreEqual(JsonToken.String, reader.TokenType);
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Assert.AreEqual("!", reader.Value);
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Assert.IsTrue(reader.Read());
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Assert.AreEqual(JsonToken.PropertyName, reader.TokenType);
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Assert.AreEqual("Integer", reader.Value);
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Assert.IsTrue(reader.Read());
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Assert.AreEqual(JsonToken.Integer, reader.TokenType);
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Assert.AreEqual(123L, reader.Value);
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Assert.IsTrue(reader.Read());
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Assert.AreEqual(JsonToken.PropertyName, reader.TokenType);
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Assert.AreEqual("DateTime", reader.Value);
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Assert.IsTrue(reader.Read());
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Assert.AreEqual(JsonToken.Date, reader.TokenType);
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Assert.AreEqual(DateTime.Parse("2001-02-22T20:59:59Z"), reader.Value);
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Assert.IsTrue(reader.Read());
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Assert.AreEqual(JsonToken.PropertyName, reader.TokenType);
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Assert.AreEqual("DateTimeOffset", reader.Value);
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Assert.IsTrue(reader.Read());
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Assert.AreEqual(JsonToken.Date, reader.TokenType);
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Assert.AreEqual(DateTime.Parse("2001-02-22T20:59:59+12:00"), reader.Value);
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Assert.IsTrue(reader.Read());
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Assert.AreEqual(JsonToken.PropertyName, reader.TokenType);
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Assert.AreEqual("Float", reader.Value);
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Assert.IsTrue(reader.Read());
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Assert.AreEqual(JsonToken.Float, reader.TokenType);
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Assert.AreEqual(1.1d, reader.Value);
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Assert.IsTrue(reader.Read());
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Assert.AreEqual(JsonToken.PropertyName, reader.TokenType);
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Assert.AreEqual("Double", reader.Value);
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Assert.IsTrue(reader.Read());
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Assert.AreEqual(JsonToken.Float, reader.TokenType);
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Assert.AreEqual(3.14d, reader.Value);
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Assert.IsTrue(reader.Read());
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Assert.AreEqual(JsonToken.PropertyName, reader.TokenType);
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Assert.AreEqual("Decimal", reader.Value);
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Assert.IsTrue(reader.Read());
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Assert.AreEqual(JsonToken.Float, reader.TokenType);
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Assert.AreEqual(19.95d, reader.Value);
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Assert.IsTrue(reader.Read());
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Assert.AreEqual(JsonToken.PropertyName, reader.TokenType);
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Assert.AreEqual("Guid", reader.Value);
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Assert.IsTrue(reader.Read());
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Assert.AreEqual(JsonToken.String, reader.TokenType);
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Assert.AreEqual("d66eab59-3715-4b35-9e06-fa61c1216eaa", reader.Value);
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Assert.IsTrue(reader.Read());
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Assert.AreEqual(JsonToken.PropertyName, reader.TokenType);
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Assert.AreEqual("Uri", reader.Value);
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Assert.IsTrue(reader.Read());
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Assert.AreEqual(JsonToken.String, reader.TokenType);
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Assert.AreEqual("http://james.newtonking.com", reader.Value);
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Assert.IsTrue(reader.Read());
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Assert.AreEqual(JsonToken.PropertyName, reader.TokenType);
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Assert.AreEqual("Array", reader.Value);
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Assert.IsTrue(reader.Read());
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Assert.AreEqual(JsonToken.StartArray, reader.TokenType);
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Assert.AreEqual(1, reader.ReadAsInt32());
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Assert.AreEqual(JsonToken.Integer, reader.TokenType);
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Assert.AreEqual(1L, reader.Value);
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Assert.IsTrue(reader.Read());
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Assert.AreEqual(JsonToken.Bytes, reader.TokenType);
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Assert.AreEqual(Encoding.UTF8.GetBytes("Hello world!"), reader.Value);
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Assert.IsTrue(reader.Read());
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Assert.AreEqual(JsonToken.Boolean, reader.TokenType);
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Assert.AreEqual(true, reader.Value);
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Assert.IsTrue(reader.Read());
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Assert.AreEqual(JsonToken.EndArray, reader.TokenType);
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Assert.IsTrue(reader.Read());
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Assert.AreEqual(JsonToken.PropertyName, reader.TokenType);
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Assert.AreEqual("Object", reader.Value);
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Assert.IsTrue(reader.Read());
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Assert.AreEqual(JsonToken.StartObject, reader.TokenType);
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Assert.IsTrue(reader.Read());
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Assert.AreEqual(JsonToken.PropertyName, reader.TokenType);
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Assert.AreEqual("String", reader.Value);
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Assert.AreEqual("This is a string!", reader.ReadAsString());
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Assert.AreEqual(JsonToken.String, reader.TokenType);
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Assert.AreEqual("This is a string!", reader.Value);
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Assert.IsTrue(reader.Read());
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Assert.AreEqual(JsonToken.PropertyName, reader.TokenType);
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Assert.AreEqual("Null", reader.Value);
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Assert.IsTrue(reader.Read());
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Assert.AreEqual(JsonToken.Null, reader.TokenType);
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Assert.IsTrue(reader.Read());
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Assert.AreEqual(JsonToken.EndObject, reader.TokenType);
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Assert.IsTrue(reader.Read());
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Assert.AreEqual(JsonToken.PropertyName, reader.TokenType);
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Assert.AreEqual("Constructor", reader.Value);
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Assert.IsTrue(reader.Read());
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Assert.AreEqual(JsonToken.StartConstructor, reader.TokenType);
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Assert.AreEqual("Date", reader.Value);
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Assert.IsTrue(reader.Read());
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Assert.AreEqual(JsonToken.Integer, reader.TokenType);
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Assert.AreEqual(2000L, reader.Value);
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Assert.IsTrue(reader.Read());
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Assert.AreEqual(JsonToken.Integer, reader.TokenType);
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Assert.AreEqual(12L, reader.Value);
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Assert.IsTrue(reader.Read());
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Assert.AreEqual(JsonToken.Integer, reader.TokenType);
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Assert.AreEqual(30L, reader.Value);
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Assert.IsTrue(reader.Read());
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Assert.AreEqual(JsonToken.EndConstructor, reader.TokenType);
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Assert.IsTrue(reader.Read());
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Assert.AreEqual(JsonToken.EndObject, reader.TokenType);
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Assert.IsFalse(reader.Read());
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}
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}
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}
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}
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#endif |