Separate camel case String

Below is the query to separate camel case string and removing first lower part from the string on condition IF @skipFirstLowerPart = 0 means skip first lower part from the string and                 IF @skipFirstLowerPart = 1 then do not skip first lower part from the string

DECLARE @str VARCHAR(100) = 'txtFirstName'

DECLARE @skipFirstLowerPart INT = 0 -- 0 yes 1 no

DECLARE @len INT = LEN(@str), @ptr INT = 1, @chk INT = 0

DECLARE @newstr VARCHAR(100) = ''

WHILE @len > 0

BEGIN

      DECLARE @char CHAR(1) = SUBSTRING(@str, @ptr, @ptr+1)

     

      IF @skipFirstLowerPart = 0

      BEGIN

            IF (CONVERT(VARBINARY(128), @char) = CONVERT(VARBINARY(128), LOWER(@char))) AND (@chk = 0)

            BEGIN

                  SET @char = ''

            END

      END

      IF CONVERT(VARBINARY(128), @char) <> CONVERT(VARBINARY(128), LOWER(@char))

      BEGIN

            SELECT @newstr += ' ', @chk = 1

      END

     

      SET @newstr += @char

     

      SELECT @ptr += 1, @len -= 1

END

SELECT LTRIM(RTRIM(@newstr))

RESULT :

First Name