version 1.1, 2004/12/12 20:14:07
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version 1.7, 2004/12/28 21:09:47
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\ short: u8 means utf-8 encoded address |
\ short: u8 means utf-8 encoded address |
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: u8len ( u -- n ) |
s" malformed UTF-8 character" exception Constant UTF-8-err |
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: u8len ( u8 -- n ) |
dup $80 u< IF drop 1 EXIT THEN \ special case ASCII |
dup $80 u< IF drop 1 EXIT THEN \ special case ASCII |
$800 2 >r |
$800 2 >r |
BEGIN 2dup u>= WHILE 5 lshift r> 1+ >r REPEAT |
BEGIN 2dup u>= WHILE 5 lshift r> 1+ >r REPEAT |
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$7F and $40 >r |
$7F and $40 >r |
BEGIN dup r@ and WHILE r@ xor |
BEGIN dup r@ and WHILE r@ xor |
6 lshift r> 5 lshift >r >r count |
6 lshift r> 5 lshift >r >r count |
\ dup $C0 and $80 <> abort" malformed character" |
dup $C0 and $80 <> IF UTF-8-err throw THEN |
$3F and r> or |
$3F and r> or |
REPEAT rdrop ; |
REPEAT rdrop ; |
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$7F and $40 >r |
$7F and $40 >r |
BEGIN dup r@ and WHILE r@ xor |
BEGIN dup r@ and WHILE r@ xor |
6 lshift r> 5 lshift >r >r defers key |
6 lshift r> 5 lshift >r >r defers key |
\ dup $C0 and $80 <> abort" malformed character" |
dup $C0 and $80 <> IF UTF-8-err throw THEN |
$3F and r> or |
$3F and r> or |
REPEAT rdrop ; |
REPEAT rdrop ; |
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\ input editor |
\ input editor |
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: save-cursor ( -- ) 27 emit '7 emit ; |
[IFUNDEF] #esc 27 Constant #esc [THEN] |
: restore-cursor ( -- ) 27 emit '8 emit ; |
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: save-cursor ( -- ) #esc emit '7 emit ; |
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: restore-cursor ( -- ) #esc emit '8 emit ; |
: .rest ( addr pos1 -- addr pos1 ) |
: .rest ( addr pos1 -- addr pos1 ) |
restore-cursor 2dup type ; |
restore-cursor 2dup type ; |
: .all ( span addr pos1 -- span addr pos1 ) |
: .all ( span addr pos1 -- span addr pos1 ) |
restore-cursor >r 2dup swap type r> ; |
restore-cursor >r 2dup swap type r> ; |
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: <u8ins> ( max span addr pos1 u8char -- max span addr pos2 ) |
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>r 2over r@ u8len + u< IF rdrop bell EXIT THEN |
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>string over r@ u8len + swap move 2dup chars + r@ swap u8!+ drop |
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r> u8len >r rot r@ chars + -rot r> chars + ; |
: (u8ins) ( max span addr pos1 u8char -- max span addr pos2 ) |
: (u8ins) ( max span addr pos1 u8char -- max span addr pos2 ) |
>r >string over r@ u8len + swap move 2dup chars + r@ swap u8!+ drop |
<u8ins> .all .rest ; |
r> u8len >r rot r@ chars + -rot r> chars + .all .rest ; |
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: u8back ( max span addr pos1 -- max span addr pos2 f ) |
: u8back ( max span addr pos1 -- max span addr pos2 f ) |
dup IF over + u8<< over - 0 max |
dup IF over + u8<< over - 0 max .all .rest |
ELSE #bell emit THEN .rest 0 ; |
ELSE bell THEN 0 ; |
: u8forw ( max span addr pos1 -- max span addr pos2 f ) |
: u8forw ( max span addr pos1 -- max span addr pos2 f ) |
2 pick over <> IF over + u8@+ u8emit over - ELSE #bell emit THEN 0 ; |
2 pick over <> IF over + u8@+ u8emit over - ELSE bell THEN 0 ; |
: (u8del) ( max span addr pos1 -- max span addr pos2 ) |
: (u8del) ( max span addr pos1 -- max span addr pos2 ) |
over + dup u8<< tuck - >r over - |
over + dup u8<< tuck - >r over - |
>string over r@ + -rot move |
>string over r@ + -rot move |
rot r> - -rot .all 2 spaces .rest ; |
rot r> - -rot ; |
: ?u8del ( max span addr pos1 -- max span addr pos2 0 ) |
: ?u8del ( max span addr pos1 -- max span addr pos2 0 ) |
dup IF (u8del) THEN 0 ; |
dup IF (u8del) .all 2 spaces .rest THEN 0 ; |
: <u8del> ( max span addr pos1 -- max span addr pos2 0 ) |
: <u8del> ( max span addr pos1 -- max span addr pos2 0 ) |
2 pick over <> |
2 pick over <> |
IF u8forw drop (u8del) ELSE #bell emit THEN 0 ; |
IF u8forw drop (u8del) .all 2 spaces .rest |
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ELSE bell THEN 0 ; |
: u8eof 2 pick over or 0= IF bye ELSE <u8del> THEN ; |
: u8eof 2 pick over or 0= IF bye ELSE <u8del> THEN ; |
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' u8forw ctrl F bindkey |
: u8first-pos ( max span addr pos1 -- max span addr 0 0 ) |
' u8back ctrl B bindkey |
drop 0 .all .rest 0 ; |
' ?u8del ctrl H bindkey |
: u8end-pos ( max span addr pos1 -- max span addr span 0 ) |
' u8eof ctrl D bindkey |
drop over .all 0 ; |
' <u8del> ctrl X bindkey |
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' (u8ins) IS insert-char |
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' noop IS everychar |
: u8clear-line ( max span addr pos1 -- max addr ) |
' save-cursor IS everyline |
drop restore-cursor swap spaces restore-cursor ; |
' u8key IS key |
: u8clear-tib ( max span addr pos -- max 0 addr 0 false ) |
' u8emit IS emit |
u8clear-line 0 tuck dup ; |
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: (u8enter) ( max span addr pos1 -- max span addr pos2 true ) |
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>r end^ 2@ hist-setpos |
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2dup swap history write-line drop ( throw ) \ don't worry about errors |
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hist-pos 2dup backward^ 2! end^ 2! |
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r> .all space true ; |
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: u8kill-expand ( max span addr pos1 -- max span addr pos2 ) |
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prefix-found cell+ @ ?dup IF >r |
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r@ - >string over r@ + -rot move |
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rot r@ - -rot .all r> spaces .rest THEN ; |
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: insert ( string length buffer size -- ) |
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rot over min >r r@ - ( left over ) |
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over dup r@ + rot move r> move ; |
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: u8tab-expand ( max span addr pos1 -- max span addr pos2 0 ) |
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key? IF #tab (u8ins) 0 EXIT THEN |
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u8kill-expand 2dup extract-word dup 0= IF nip EXIT THEN |
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search-prefix tib-full? |
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IF 7 emit 2drop prefix-off |
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ELSE dup >r |
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2>r >string r@ + 2r> 2swap insert |
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r@ + rot r> + -rot |
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THEN |
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prefix-found @ IF bl (u8ins) ELSE .all .rest THEN 0 ; |
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: utf-8-io ( -- ) |
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['] u8forw ctrl F bindkey |
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['] u8back ctrl B bindkey |
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['] ?u8del ctrl H bindkey |
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['] u8eof ctrl D bindkey |
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['] <u8del> ctrl X bindkey |
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['] u8clear-tib ctrl K bindkey |
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['] u8first-pos ctrl A bindkey |
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['] u8end-pos ctrl E bindkey |
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['] (u8enter) #lf bindkey |
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['] (u8enter) #cr bindkey |
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['] u8tab-expand #tab bindkey |
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['] (u8ins) IS insert-char |
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['] kill-prefix IS everychar |
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['] save-cursor IS everyline |
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['] u8key IS key |
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['] u8emit IS emit ; |
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