Import YamlDotNet.

Assets/YamlDotNet/Serialization/Utilities/StringExtensions.cs

@@ -0,0 +1,79 @@
+// This file is part of YamlDotNet - A .NET library for YAML.
+// Copyright (c) Antoine Aubry and contributors
+//
+// 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.
+
+using System;
+using System.Text.RegularExpressions;
+
+namespace YamlDotNet.Serialization.Utilities
+{
+    /// <summary>
+    /// Various string extension methods
+    /// </summary>
+    internal static class StringExtensions
+    {
+        private static string ToCamelOrPascalCase(string str, Func<char, char> firstLetterTransform)
+        {
+            var text = Regex.Replace(str, "([_\\-])(?<char>[a-z])", match => match.Groups["char"].Value.ToUpperInvariant(), RegexOptions.IgnoreCase);
+            return firstLetterTransform(text[0]) + text.Substring(1);
+        }
+
+
+        /// <summary>
+        /// Convert the string with underscores (this_is_a_test) or hyphens (this-is-a-test) to 
+        /// camel case (thisIsATest). Camel case is the same as Pascal case, except the first letter
+        /// is lowercase.
+        /// </summary>
+        /// <param name="str">String to convert</param>
+        /// <returns>Converted string</returns>
+        public static string ToCamelCase(this string str)
+        {
+            return ToCamelOrPascalCase(str, char.ToLowerInvariant);
+        }
+
+        /// <summary>
+        /// Convert the string with underscores (this_is_a_test) or hyphens (this-is-a-test) to 
+        /// pascal case (ThisIsATest). Pascal case is the same as camel case, except the first letter
+        /// is uppercase.
+        /// </summary>
+        /// <param name="str">String to convert</param>
+        /// <returns>Converted string</returns>
+        public static string ToPascalCase(this string str)
+        {
+            return ToCamelOrPascalCase(str, char.ToUpperInvariant);
+        }
+
+        /// <summary>
+        /// Convert the string from camelcase (thisIsATest) to a hyphenated (this-is-a-test) or 
+        /// underscored (this_is_a_test) string
+        /// </summary>
+        /// <param name="str">String to convert</param>
+        /// <param name="separator">Separator to use between segments</param>
+        /// <returns>Converted string</returns>
+        public static string FromCamelCase(this string str, string separator)
+        {
+            // Ensure first letter is always lowercase
+            str = char.ToLower(str[0]) + str.Substring(1);
+
+            str = Regex.Replace(str.ToCamelCase(), "(?<char>[A-Z])", match => separator + match.Groups["char"].Value.ToLowerInvariant());
+            return str;
+        }
+    }
+}