Newtonsoft.Json/JsonTextWriter.cs

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#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

using System;
using System.Collections.Generic;
using System.Globalization;
#if !(NET20 || NET35 || PORTABLE40 || PORTABLE)
using System.Numerics;
#endif
using System.Text;
using System.IO;
using System.Xml;
using Newtonsoft.Json.Utilities;

namespace Newtonsoft.Json
{
    /// <summary>
    /// Represents a writer that provides a fast, non-cached, forward-only way of generating Json data.
    /// </summary>
    public class JsonTextWriter : JsonWriter
    {
        private readonly TextWriter _writer;
        private Base64Encoder _base64Encoder;
        private char _indentChar;
        private int _indentation;
        private char _quoteChar;
        private bool _quoteName;
        private bool[] _charEscapeFlags;
        private char[] _writeBuffer;

        private Base64Encoder Base64Encoder
        {
            get
            {
                if (_base64Encoder == null)
                    _base64Encoder = new Base64Encoder(_writer);

                return _base64Encoder;