-- The procedure produces a series of lines of output.
-- Each of output line has a specified first and last character.
-- Between the first and last characters are a specified character
-- that is repeated a specified number of times.
--
-- Input consists of a sequence of output line specifications, as follows:
--      first character
--      number of times to repeat middle character
--      middle character
--      last character
--
-- If the last character is 'u', then the entire line
-- is printed in upper case.
--
-- The program continues to read line specifications until 
-- end of file is reached, after which the word "done"
-- is printed on a separate line.
--
with ada.text_io; use ada.text_io; 
with ada.integer_text_io; use ada.integer_text_io; 

-- This package contains the to_upper function
with ada.characters.handling; use ada.characters.handling;
 
procedure repeat_middle  is 
    first_char, 
    middle_char, 
    last_char: Character;  -- Characters to print

    num_middle: Integer;   -- Number of times to repeat middle
begin
    -- Input and process line specifications until eof is reached
    while not end_of_file loop
        -- Get specification for a single line
        get(first_char);
        get(num_middle);
        get(middle_char);
        get(last_char);

        -- Convert characters to upper case, if needed
        if last_char = 'u' then
            first_char := to_upper(first_char);
            middle_char := to_upper(middle_char);
            last_char := to_upper(last_char);
        end if;

        -- Output line
        put(first_char);
        for i in 1 .. num_middle loop
            put(middle_char);
        end loop;
        put(last_char);
        new_line;

    end loop;

    -- Output final line
    put_line("done");
end repeat_middle;