\ -*- mode: forth -*-
\ $Id: wc.bigforth,v 1.1 2001/06/24 22:27:35 doug Exp $
\ http://www.bagley.org/~doug/shootout/

variable  nn       0       nn !       \ number of newlines
variable  nw       0       nw !       \ number of words
variable  nc       0       nc !       \ number of chars
variable  in_word  0       in_word !  \ flag: "in word"

10  constant  nl_ch
9   constant  tab_ch
32  constant  space_ch

4096 constant MAXREAD
create buff MAXREAD allot

\ scan the buffer and count lines, words, chars
: scanbuff 
    dup nc +!                 \ update nc with amount of chars in buffer
    buff + buff           \ from start of buff to buff + n
    do
    i c@
    case
        nl_ch    of  0 in_word !  1 nn +!  endof
        tab_ch   of  0 in_word !  endof
        space_ch of  0 in_word !  endof
        \ otherwise:
        in_word @ 0=
        if
        1 in_word !
        1 nw +!
        then
    endcase
    loop ;

: wc 
    buff
    begin
        buff MAXREAD stdin read-file throw dup
    while
    scanbuff
    repeat ;

wc nn @ . nw @ . nc @ 1 u.r cr

bye \ th-th-that's all folks!