| \ 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) 1995,2000,2003,2004,2005,2006 Free Software Foundation, Inc. |
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| \ This file is part of Gforth. |
\ This file is part of Gforth. |
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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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| \ moving in history file 16oct94py |
\ moving in history file 16oct94py |
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| : clear-line ( max span addr pos1 -- max addr ) |
defer back-restore ( u -- ) |
| backspaces over spaces swap backspaces ; |
' backspaces is back-restore |
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| : clear-tib ( max span addr pos -- max 0 addr 0 false ) |
[IFDEF] x-width |
| clear-line 0 tuck dup ; |
: clear-line ( max span addr pos1 -- max addr ) |
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back-restore over over swap x-width spaces swap back-restore ; |
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[ELSE] |
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: clear-line ( max span addr pos1 -- max addr ) |
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back-restore over spaces swap back-restore ; |
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[THEN] |
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\ : clear-tib ( max span addr pos -- max 0 addr 0 false ) |
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\ 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 ) ; |
| : 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 |
| 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 - ; |
| [ -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] |
\ UTF-8 support |
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| : 8-bit-io ( -- ) |
require utf-8.fs |
| ['] 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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| [ action-of key ] Literal IS key |
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| [ action-of emit ] Literal IS emit ; |
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| \ UTF-8 support |
[IFUNDEF] #esc 27 Constant #esc [THEN] |
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| include utf-8.fs |
Variable curpos |
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| : utf-8-cold ( -- ) |
s" os-type" environment? [IF] s" cygwin" str= [IF] |
| s" LANG" getenv s" .UTF-8" search nip nip |
: save-cursor ( -- ) #esc emit '7 emit ; |
| IF utf-8-io ELSE 8-bit-io THEN ; |
: restore-cursor ( -- ) #esc emit '8 emit ; |
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: cur-correct ( addr u -- ) 2drop ; |
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[ELSE] |
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: at-xy? ( -- x y ) |
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key? drop |
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#esc emit ." [6n" 0 0 |
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BEGIN key dup 'R <> WHILE |
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dup '; = IF drop swap ELSE |
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dup '0 '9 1+ within IF '0 - swap 10 * + ELSE |
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drop THEN THEN |
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REPEAT drop 1- swap 1- ; |
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: cursor@ ( -- n ) at-xy? form nip * + ; |
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: cursor! ( n -- ) form nip /mod at-xy ; |
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: cur-correct ( addr u -- ) x-width curpos @ + cursor@ - |
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form nip >r r@ 2/ + r@ / r> * negate curpos +! ; |
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: save-cursor ( -- ) cursor@ curpos ! ; |
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: restore-cursor ( -- ) curpos @ cursor! ; |
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[THEN] |
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: .rest ( addr pos1 -- addr pos1 ) |
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key? ?EXIT |
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restore-cursor 2dup type 2dup cur-correct ; |
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: .all ( span addr pos1 -- span addr pos1 ) |
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key? ?EXIT |
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restore-cursor >r 2dup swap type 2dup swap cur-correct r> ; |
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: xback-restore ( u -- ) |
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drop key? ?EXIT |
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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 ) |
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>r 2over r@ xc-size + u< IF ( max span addr pos1 R:xc ) |
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rdrop bell EXIT THEN |
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>string over r@ xc-size + swap move |
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2dup chars + r@ swap r@ xc-size xc!+? 2drop drop |
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r> xc-size >r rot r@ chars + -rot r> chars + ; |
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: (xins) ( max span addr pos1 xc -- max span addr pos2 ) |
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<xins> .all .rest ; |
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: xback ( max span addr pos1 -- max span addr pos2 f ) |
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dup IF over + xchar- over - 0 max .all .rest |
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ELSE bell THEN 0 ; |
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: xforw ( max span addr pos1 -- max span addr pos2 f ) |
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2 pick over <> IF over + xc@+ xemit over - ELSE bell THEN 0 ; |
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: (xdel) ( max span addr pos1 -- max span addr pos2 ) |
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over + dup xchar- tuck - >r over - |
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>string over r@ + -rot move |
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rot r> - -rot ; |
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: ?xdel ( max span addr pos1 -- max span addr pos2 0 ) |
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dup IF (xdel) .all 2 spaces .rest THEN 0 ; |
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: <xdel> ( max span addr pos1 -- max span addr pos2 0 ) |
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2 pick over <> |
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IF xforw drop (xdel) .all 2 spaces .rest |
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ELSE bell THEN 0 ; |
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: xeof 2 pick over or 0= IF bye ELSE <xdel> THEN ; |
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: xfirst-pos ( max span addr pos1 -- max span addr 0 0 ) |
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drop 0 .all .rest 0 ; |
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: xend-pos ( max span addr pos1 -- max span addr span 0 ) |
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drop over .all 0 ; |
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: xclear-line ( max span addr pos1 -- max addr ) |
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drop restore-cursor swap spaces restore-cursor ; |
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: xclear-tib ( max span addr pos -- max 0 addr 0 false ) |
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xclear-line 0 tuck dup ; |
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: (xenter) ( 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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| ' utf-8-cold INIT8 chained |
: xkill-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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: xtab-expand ( max span addr pos1 -- max span addr pos2 0 ) |
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key? IF #tab (xins) 0 EXIT THEN |
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xkill-expand 2dup extract-word dup 0= IF nip EXIT THEN |
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search-prefix tib-full? |
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IF bell 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 (xins) ELSE .all .rest THEN 0 ; |
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| utf-8-cold |
: xchar-history ( -- ) |
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['] xforw ctrl F bindkey |
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['] xback ctrl B bindkey |
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['] ?xdel ctrl H bindkey |
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['] xeof ctrl D bindkey |
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['] <xdel> ctrl X bindkey |
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['] xclear-tib ctrl K bindkey |
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['] xfirst-pos ctrl A bindkey |
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['] xend-pos ctrl E bindkey |
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history IF ['] (xenter) #lf bindkey THEN |
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history IF ['] (xenter) #cr bindkey THEN |
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['] xtab-expand #tab bindkey |
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['] (xins) IS insert-char |
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['] kill-prefix IS everychar |
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['] save-cursor IS everyline |
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['] xback-restore IS back-restore |
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; |
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xchar-history |
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| \ initializing history |
\ initializing history |
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| ?dup-if |
?dup-if |
| \ !! >stderr |
\ !! >stderr |
| \ history-file type ." : " .error cr |
\ history-file type ." : " .error cr |
| drop 2drop |
drop 2drop 0 to history |
| ['] false ['] false ['] (ret) |
['] false ['] false ['] (ret) |
| else |
else |
| to history |
to history |
| ; |
; |
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| : history-cold ( -- ) |
: history-cold ( -- ) |
| history-file get-history ; |
history-file get-history xchar-history ; |
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:noname ( -- ) |
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defers 'cold |
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history-cold |
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; is 'cold |
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| ' history-cold INIT8 chained |
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| history-cold |
history-cold |
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