version 1.3, 2004/12/12 22:20:00
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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 ) |
: <u8ins> ( max span addr pos1 u8char -- max span addr pos2 ) |
>r >string over r@ u8len + swap move 2dup chars + r@ swap u8!+ drop |
>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 |
r> u8len >r rot r@ chars + -rot r> chars + ; |
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 ) |
<u8ins> .all .rest ; |
<u8ins> .all .rest ; |
: 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 .all .rest |
dup IF over + u8<< over - 0 max .all .rest |
ELSE #bell emit THEN 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 |
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: <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) .all 2 spaces .rest |
IF u8forw drop (u8del) .all 2 spaces .rest |
ELSE #bell emit THEN 0 ; |
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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: u8first-pos ( max span addr pos1 -- max span addr 0 0 ) |
: u8first-pos ( max span addr pos1 -- max span addr 0 0 ) |
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: u8tab-expand ( max span addr pos1 -- max span addr pos2 0 ) |
: u8tab-expand ( max span addr pos1 -- max span addr pos2 0 ) |
key? IF #tab (u8ins) 0 EXIT THEN |
key? IF #tab (u8ins) 0 EXIT THEN |
u8kill-expand 2dup extract-word dup 0= IF nip EXIT THEN |
u8kill-expand 2dup extract-word dup 0= IF nip EXIT THEN |
search-prefix tib-full? |
search-prefix tib-full? |
IF 7 emit 2drop 0 0 prefix-found 2! |
IF 7 emit 2drop prefix-off |
ELSE dup >r |
ELSE dup >r |
2>r >string r@ + 2r> 2swap insert |
2>r >string r@ + 2r> 2swap insert |
r@ + rot r> + -rot |
r@ + rot r> + -rot |
THEN |
THEN |
prefix-found @ IF bl (u8ins) THEN 0 ; |
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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' 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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' save-cursor IS everyline |
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' u8key IS key |
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' u8emit IS emit |
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