version 1.40, 2005/01/12 21:21:53
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version 1.45, 2006/02/19 15:13:38
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\ command line edit and history support 16oct94py |
\ command line edit and history support 16oct94py |
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\ Copyright (C) 1995,2000,2003,2004 Free Software Foundation, Inc. |
\ Copyright (C) 1995,2000,2003,2004,2005 Free Software Foundation, Inc. |
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\ This file is part of Gforth. |
\ This file is part of Gforth. |
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Line 28 interpret/compile: ctrl ( "<char>" -- c
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Line 28 interpret/compile: ctrl ( "<char>" -- c
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: >string ( span addr pos1 -- span addr pos1 addr2 len ) |
: >string ( span addr pos1 -- span addr pos1 addr2 len ) |
over 3 pick 2 pick chars /string ; |
over 3 pick 2 pick chars /string ; |
: type-rest ( span addr pos1 -- span addr pos1 back ) |
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>string tuck type ; |
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: (del) ( max span addr pos1 -- max span addr pos2 ) |
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1- >string over 1+ -rot move |
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rot 1- -rot #bs emit type-rest bl emit 1+ backspaces ; |
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: (ins) ( max span addr pos1 char -- max span addr pos2 ) |
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>r >string over 1+ swap move 2dup chars + r> swap c! |
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rot 1+ -rot type-rest 1- backspaces 1+ ; |
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: ?del ( max span addr pos1 -- max span addr pos2 0 ) |
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dup IF (del) THEN 0 ; |
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: (ret) type-rest drop true space ; |
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: back dup IF 1- #bs emit ELSE #bell emit THEN 0 ; |
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: forw 2 pick over <> IF 2dup + c@ emit 1+ ELSE #bell emit THEN 0 ; |
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: <del> ( max span addr pos1 -- max span addr pos2 0 ) |
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2 pick over <> |
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IF forw drop (del) ELSE #bell emit THEN 0 ; |
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: eof 2 pick over or 0= IF bye ELSE <del> THEN ; |
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: bindkey ( xt key -- ) cells ctrlkeys + ! ; |
: bindkey ( xt key -- ) cells ctrlkeys + ! ; |
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Line 86 s" os-class" environment? [IF] s" unix"
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Line 69 s" os-class" environment? [IF] s" unix"
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\ moving in history file 16oct94py |
\ moving in history file 16oct94py |
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defer back-restore ( u -- ) |
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' backspaces is back-restore |
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: clear-line ( max span addr pos1 -- max addr ) |
: clear-line ( max span addr pos1 -- max addr ) |
backspaces over spaces swap backspaces ; |
back-restore over spaces swap back-restore ; |
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: clear-tib ( max span addr pos -- max 0 addr 0 false ) |
\ : clear-tib ( max span addr pos -- max 0 addr 0 false ) |
clear-line 0 tuck dup ; |
\ clear-line 0 tuck dup ; |
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: hist-pos ( -- ud ) history file-position drop ( throw ) ; |
: hist-pos ( -- ud ) history file-position drop ( throw ) ; |
: hist-setpos ( ud -- ) history reposition-file drop ( throw ) ; |
: hist-setpos ( ud -- ) history reposition-file drop ( throw ) ; |
Line 117 s" os-class" environment? [IF] s" unix"
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Line 103 s" os-class" environment? [IF] s" unix"
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: prev-line ( max span addr pos1 -- max span addr pos2 false ) |
: prev-line ( max span addr pos1 -- max span addr pos2 false ) |
clear-line find-prev-line 2dup type 0 ; |
clear-line find-prev-line 2dup type 0 ; |
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Create lfpad #lf c, |
\ Create lfpad #lf c, |
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: (enter) ( max span addr pos1 -- max span addr pos2 true ) |
: (enter) ( max span addr pos1 -- max span addr pos2 true ) |
>r end^ 2@ hist-setpos |
>r end^ 2@ hist-setpos |
Line 125 Create lfpad #lf c,
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Line 111 Create lfpad #lf c,
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hist-pos 2dup backward^ 2! end^ 2! |
hist-pos 2dup backward^ 2! end^ 2! |
r> (ret) ; |
r> (ret) ; |
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\ some other key commands 16oct94py |
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: first-pos ( max span addr pos1 -- max span addr 0 0 ) |
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backspaces 0 0 ; |
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: end-pos ( max span addr pos1 -- max span addr span 0 ) |
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type-rest 2drop over 0 ; |
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: extract-word ( addr len -- addr' len' ) dup >r |
: extract-word ( addr len -- addr' len' ) dup >r |
BEGIN 1- dup 0>= WHILE 2dup + c@ bl = UNTIL THEN 1+ |
BEGIN 1- dup 0>= WHILE 2dup + c@ bl = UNTIL THEN 1+ |
tuck + r> rot - ; |
tuck + r> rot - ; |
Line 203 Create prefix-found 0 , 0 ,
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Line 182 Create prefix-found 0 , 0 ,
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[ -1 cells ] Literal +LOOP |
[ -1 cells ] Literal +LOOP |
prefix-string ; |
prefix-string ; |
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: kill-expand ( max span addr pos1 -- max span addr pos2 ) |
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prefix-found cell+ @ 0 ?DO (del) LOOP ; |
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: tib-full? ( max span addr pos addr' len' -- max span addr pos addr1 u flag ) |
: tib-full? ( max span addr pos addr' len' -- max span addr pos addr1 u flag ) |
5 pick over 4 pick + prefix-found @ 0<> - < ; |
5 pick over 4 pick + prefix-found @ 0<> - < ; |
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: tab-expand ( max span addr pos1 -- max span addr pos2 0 ) |
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key? IF #tab (ins) 0 EXIT THEN |
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kill-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 0 0 prefix-found 2! |
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ELSE bounds ?DO I c@ (ins) LOOP THEN |
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prefix-found @ IF bl (ins) THEN 0 ; |
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: kill-prefix ( key -- key ) |
: kill-prefix ( key -- key ) |
dup #tab <> IF prefix-off THEN ; |
dup #tab <> IF prefix-off THEN ; |
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[IFUNDEF] everyline defer everyline [THEN] |
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: char-history ( -- ) |
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\ might be useful on dumb terminals, otherwise unused |
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['] forw ctrl F bindkey |
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['] back ctrl B bindkey |
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['] ?del ctrl H bindkey |
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['] eof ctrl D bindkey |
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['] <del> ctrl X bindkey |
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['] next-line ctrl N bindkey |
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['] prev-line ctrl P bindkey |
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['] clear-tib ctrl K bindkey |
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['] first-pos ctrl A bindkey |
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['] end-pos ctrl E bindkey |
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['] (enter) #lf bindkey |
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['] (enter) #cr bindkey |
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['] tab-expand #tab bindkey |
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['] (ins) IS insert-char |
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['] kill-prefix IS everychar |
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['] noop IS everyline ; |
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\ UTF-8 support |
\ UTF-8 support |
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require utf-8.fs |
require utf-8.fs |
Line 253 require utf-8.fs
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Line 200 require utf-8.fs
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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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: xback-restore ( u -- ) |
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drop restore-cursor ; |
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\ In the following, addr max is the buffer, addr span is the current |
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\ string in the buffer, and pos1 is the cursor position in the buffer. |
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: <xins> ( max span addr pos1 xc -- max span addr pos2 ) |
: <xins> ( max span addr pos1 xc -- max span addr pos2 ) |
>r 2over r@ xc-size + u< IF ( max span addr pos1 R:xc ) |
>r 2over r@ xc-size + u< IF ( max span addr pos1 R:xc ) |
Line 330 require utf-8.fs
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Line 282 require utf-8.fs
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['] xtab-expand #tab bindkey |
['] xtab-expand #tab bindkey |
['] (xins) IS insert-char |
['] (xins) IS insert-char |
['] kill-prefix IS everychar |
['] kill-prefix IS everychar |
['] save-cursor IS everyline ; |
['] save-cursor IS everyline |
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['] xback-restore IS back-restore |
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; |
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xchar-history |
xchar-history |
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Line 356 xchar-history
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Line 310 xchar-history
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; |
; |
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: history-cold ( -- ) |
: history-cold ( -- ) |
history-file get-history ; |
history-file get-history xchar-history ; |
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' history-cold INIT8 chained |
' history-cold INIT8 chained |
history-cold |
history-cold |