ServiceStack.StreamExtensions.CollapseWhitespace C# (CSharp) Метод

        public static string CollapseWhitespace(this string str)
        {
            if (str == null)
                return null;

            var sb = StringBuilderThreadStatic.Allocate();
            var lastChar = (char)0;
            for (var i = 0; i < str.Length; i++)
            {
                var c = str[i];
                if (c < 32) continue; // Skip all these
                if (c == 32)
                {
                    if (lastChar == 32)
                        continue; // Only write one space character
                }
                sb.Append(c);
                lastChar = c;
            }

            return StringBuilderThreadStatic.ReturnAndFree(sb);
        }