--- gforth/ekey.fs 2008/11/23 20:49:37 1.22 +++ gforth/ekey.fs 2008/11/24 15:35:24 1.24 @@ -337,25 +337,36 @@ set-current : clear-ekey-buffer ( -- ) ekey-buffer 0 ekey-buffered 2! ; +[IFDEF] max-single-byte + : read-xkey ( key -- flag ) + clear-ekey-buffer + ekey-buffered char-append-buffer + ekey-buffer 1 u8addrlen 1 +do + key? 0= ?leave + key ekey-buffered char-append-buffer + loop + ekey-buffer 1 u8addrlen ekey-buffered @ = ; + : get-xkey ( u -- xc ) + dup max-single-byte u>= if + read-xkey if + ekey-buffer xc@+ nip else + ekey-buffered 2@ unkeys key then + then ; + : xkey? ( -- flag ) + key? dup if + drop key read-xkey ekey-buffered 2@ unkeys + clear-ekey-buffer then ; +[THEN] + : ekey ( -- u ) \ facility-ext e-key \G Receive a keyboard event @var{u} (encoding implementation-defined). key dup #esc = if drop clear-ekey-buffer - esc-prefix + esc-prefix exit then [IFDEF] max-single-byte - dup max-single-byte u>= if - clear-ekey-buffer - ekey-buffered char-append-buffer - ekey-buffer 1 u8addrlen 1 +do - key? 0= ?leave - key ekey-buffered char-append-buffer - loop - ekey-buffer 1 u8addrlen ekey-buffered @ = if - ekey-buffer xc@+ nip else - ekey-buffered 2@ unkeys key then - then + get-xkey [THEN] ; @@ -371,6 +382,8 @@ set-current \G keyboard event @var{u1} into key id @var{u2} and return true; \G otherwise return @var{u1} and false. ekey>xchar 0= ; + +' xkey? alias ekey? ( -- flag ) \ facility-ext e-key-question [ELSE] : ekey>char ( u -- u false | c true ) \ facility-ext e-key-to-char \G Convert keyboard event @var{u} into character @code{c} if possible. @@ -380,9 +393,10 @@ set-current \G keyboard event @var{u1} into key id @var{u2} and return true; \G otherwise return @var{u1} and false. ekey>char 0= ; -[THEN] ' key? alias ekey? ( -- flag ) \ facility-ext e-key-question +[THEN] + \G True if a keyboard event is available. \ : esc? ( -- flag ) recursive