sdk/Sdk.Generators/Extensions/StringExtensions.cs

// Copyright (c) .NET Foundation. All rights reserved.
// Licensed under the MIT License. See License.txt in the project root for license information.

using System;
using System.Collections.Generic;
using System.Linq;

namespace Microsoft.Azure.Functions.Worker.Sdk.Generators
{
    internal static class StringExtensions
    {
        public static string TrimStringFromEnd(this string str, string end)
        {
            if (end is null)
            {
                throw new ArgumentNullException(nameof(end));
            }

            return str.EndsWith(end) ? str.Substring(0, str.Length - end.Length) : str;
        }

        public static string TrimStringsFromEnd(this string str, IReadOnlyList<string> strings)
        {
            var result = str;

            foreach (string s in strings)
            {
                result = result.TrimStringFromEnd(s);
            }

            return result;
        }

        /// <summary>
        /// Returns a copy of the string where the first character is in lower case.
        /// </summary>
        public static string ToLowerFirstCharacter(this string str)
        {
            if (!string.IsNullOrEmpty(str))
            {
                return Char.ToLowerInvariant(str[0]) + str.Substring(1);
            }
            else
            {
                return str;
            }
        }
    }
}