src/Converters/StringExtensions.cs

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using System;
using System.Collections.Generic;
using System.Text;

namespace Rapidity.Json.Converters
{
    internal static class StringExtensions
    {
        public static string ToCamelCase(this string name)
        {
            if (string.IsNullOrEmpty(name) || !char.IsUpper(name[0]))
            {
                return name;
            }
            char[] chars = name.ToCharArray();
            for (int i = 0; i < chars.Length; i++)
            {
                if (i == 1 && !char.IsUpper(chars[i]))
                {
                    break;
                }
                bool hasNext = (i + 1 < chars.Length);
                if (i > 0 && hasNext && !char.IsUpper(chars[i + 1]))
                {
                    if (char.IsSeparator(chars[i + 1]))
                    {
                        chars[i] = char.ToLower(chars[i]);
                    }
                    break;
                }
                chars[i] = char.ToLower(chars[i]);
            }
            return new string(chars);
        }
    }
}