chore: 初始化北汽福田MES采集程序

Common/00-1Json8.3/Json8.3/Utilities/StringReference.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
+{
+    internal struct StringReference
+    {
+        private readonly char[] _chars;
+        private readonly int _startIndex;
+        private readonly int _length;
+
+        public char this[int i]
+        {
+            get { return _chars[i]; }
+        }
+
+        public char[] Chars
+        {
+            get { return _chars; }
+        }
+
+        public int StartIndex
+        {
+            get { return _startIndex; }
+        }
+
+        public int Length
+        {
+            get { return _length; }
+        }
+
+        public StringReference(char[] chars, int startIndex, int length)
+        {
+            _chars = chars;
+            _startIndex = startIndex;
+            _length = length;
+        }
+
+        public override string ToString()
+        {
+            return new string(_chars, _startIndex, _length);
+        }
+    }
+
+    internal static class StringReferenceExtensions
+    {
+        public static int IndexOf(this StringReference s, char c, int startIndex, int length)
+        {
+            int index = Array.IndexOf(s.Chars, c, s.StartIndex + startIndex, length);
+            if (index == -1)
+            {
+                return -1;
+            }
+
+            return index - s.StartIndex;
+        }
+
+        public static bool StartsWith(this StringReference s, string text)
+        {
+            if (text.Length > s.Length)
+            {
+                return false;
+            }
+
+            char[] chars = s.Chars;
+
+            for (int i = 0; i < text.Length; i++)
+            {
+                if (text[i] != chars[i + s.StartIndex])
+                {
+                    return false;
+                }
+            }
+
+            return true;
+        }
+
+        public static bool EndsWith(this StringReference s, string text)
+        {
+            if (text.Length > s.Length)
+            {
+                return false;
+            }
+
+            char[] chars = s.Chars;
+
+            int start = s.StartIndex + s.Length - text.Length;
+            for (int i = 0; i < text.Length; i++)
+            {
+                if (text[i] != chars[i + start])
+                {
+                    return false;
+                }
+            }
+
+            return true;
+        }
+    }
+}