chore: 初始化北汽福田MES采集程序

Common/00-1Json8.3/Json8.3/Utilities/StringBuffer.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;
+
+namespace Newtonsoft.Json.Utilities
+{
+    /// <summary>
+    /// Builds a string. Unlike StringBuilder this class lets you reuse it's internal buffer.
+    /// </summary>
+    internal struct StringBuffer
+    {
+        private char[] _buffer;
+        private int _position;
+
+        public int Position
+        {
+            get { return _position; }
+            set { _position = value; }
+        }
+
+        public bool IsEmpty
+        {
+            get { return _buffer == null; }
+        }
+
+        public StringBuffer(IArrayPool<char> bufferPool, int initalSize) : this(BufferUtils.RentBuffer(bufferPool, initalSize))
+        {
+        }
+
+        private StringBuffer(char[] buffer)
+        {
+            _buffer = buffer;
+            _position = 0;
+        }
+
+        public void Append(IArrayPool<char> bufferPool, char value)
+        {
+            // test if the buffer array is large enough to take the value
+            if (_position == _buffer.Length)
+            {
+                EnsureSize(bufferPool, 1);
+            }
+
+            // set value and increment poisition
+            _buffer[_position++] = value;
+        }
+
+        public void Append(IArrayPool<char> bufferPool, char[] buffer, int startIndex, int count)
+        {
+            if (_position + count >= _buffer.Length)
+            {
+                EnsureSize(bufferPool, count);
+            }
+
+            Array.Copy(buffer, startIndex, _buffer, _position, count);
+
+            _position += count;
+        }
+
+        public void Clear(IArrayPool<char> bufferPool)
+        {
+            if (_buffer != null)
+            {
+                BufferUtils.ReturnBuffer(bufferPool, _buffer);
+                _buffer = null;
+            }
+            _position = 0;
+        }
+
+        private void EnsureSize(IArrayPool<char> bufferPool, int appendLength)
+        {
+            char[] newBuffer = BufferUtils.RentBuffer(bufferPool, (_position + appendLength) * 2);
+
+            if (_buffer != null)
+            {
+                Array.Copy(_buffer, newBuffer, _position);
+                BufferUtils.ReturnBuffer(bufferPool, _buffer);
+            }
+
+            _buffer = newBuffer;
+        }
+
+        public override string ToString()
+        {
+            return ToString(0, _position);
+        }
+
+        public string ToString(int start, int length)
+        {
+            // TODO: validation
+            return new string(_buffer, start, length);
+        }
+
+        public char[] InternalBuffer
+        {
+            get { return _buffer; }
+        }
+    }
+}