to_title Function

  1. stdlib_ascii.fypp
  2. stdlib_ascii
  3. to_title

public pure function to_title(string) result(title_string)

Converts character sequence to title case (Specification)

Version: experimental

Arguments

TypeIntentOptionalAttributesName
character(len=*), intent(in) :: string

Return Value character(len=len)


Contents

Source Code

to_title

Source Code

    pure function to_title(string) result(title_string)
        character(len=*), intent(in) :: string
        character(len=len(string)) :: title_string
        integer :: i
        logical :: capitalize_switch

        capitalize_switch = .true.
        do i = 1, len(string)
            if (is_alphanum(string(i:i))) then
                if (capitalize_switch) then
                    title_string(i:i) = char_to_upper(string(i:i))
                    capitalize_switch = .false.
                else
                    title_string(i:i) = char_to_lower(string(i:i))
                end if
            else
                title_string(i:i) = string(i:i)
                capitalize_switch = .true.
            end if
        end do

    end function to_title