version 1.27, 2001/09/15 20:40:47
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version 1.54, 2007/06/07 20:57:13
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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 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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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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' 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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' (ins) IS insert-char |
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\ history support 16oct94py |
\ history support 16oct94py |
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0 Value history \ history file fid |
0 Value history \ history file fid |
Line 72 interpret/compile: ctrl ( "<char>" -- c
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Line 47 interpret/compile: ctrl ( "<char>" -- c
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nip nip |
nip nip |
THEN ; |
THEN ; |
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s" os-class" environment? [IF] s" unix" compare 0= [ELSE] true [THEN] |
s" os-class" environment? [IF] s" unix" str= [ELSE] true [THEN] |
[IF] |
[IF] |
: history-file ( -- addr u ) |
: history-file ( -- addr u ) |
s" GFORTHHIST" getenv dup 0= IF |
s" GFORTHHIST" getenv dup 0= IF |
Line 94 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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: 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 throw ; |
: hist-pos ( -- ud ) history file-position drop ( throw ) ; |
: hist-setpos ( ud -- ) history reposition-file throw ; |
: hist-setpos ( ud -- ) history reposition-file drop ( throw ) ; |
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: get-line ( addr len -- len' flag ) |
: get-line ( addr len -- len' flag ) |
swap history read-line throw ; |
swap history read-line throw ; |
Line 125 s" os-class" environment? [IF] s" unix"
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Line 107 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 |
2dup swap history write-line throw |
2dup swap history write-line drop ( throw ) \ don't worry about errors |
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 - ; |
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Create prefix-found 0 , 0 , |
Create prefix-found 0 , 0 , |
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: sgn ( n -- -1/0/1 ) |
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dup 0= IF EXIT THEN 0< 2* 1+ ; |
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: capscomp ( c_addr1 u c_addr2 -- n ) |
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swap bounds |
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?DO dup c@ I c@ <> |
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IF dup c@ toupper I c@ toupper = |
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ELSE true THEN WHILE 1+ LOOP drop 0 |
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ELSE c@ toupper I c@ toupper - unloop THEN sgn ; |
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: word-lex ( nfa1 nfa2 -- -1/0/1 ) |
: word-lex ( nfa1 nfa2 -- -1/0/1 ) |
dup 0= |
dup 0= |
IF |
IF |
Line 183 Create prefix-found 0 , 0 ,
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Line 168 Create prefix-found 0 , 0 ,
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REPEAT |
REPEAT |
drop r> ; |
drop r> ; |
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: prefix-off ( -- ) 0 0 prefix-found 2! ; |
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: prefix-string ( addr len nfa -- addr' len' ) |
: prefix-string ( addr len nfa -- addr' len' ) |
dup prefix-found ! ?dup |
dup prefix-found ! ?dup |
IF |
IF |
name>string rot /string rot drop |
name>string rot /string rot drop |
dup 1+ prefix-found cell+ ! |
dup 1+ prefix-found cell+ ! |
ELSE |
ELSE |
2drop s" " prefix-found cell+ off |
2drop s" " prefix-off |
THEN ; |
THEN ; |
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: search-prefix ( addr1 len1 -- addr2 len2 ) |
: search-prefix ( addr1 len1 -- addr2 len2 ) |
Line 199 Create prefix-found 0 , 0 ,
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Line 186 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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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 0 0 prefix-found 2! THEN ; |
dup #tab <> IF prefix-off THEN ; |
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\ UTF-8 support |
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require utf-8.fs |
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' kill-prefix IS everychar |
[IFUNDEF] #esc 27 Constant #esc [THEN] |
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' next-line ctrl N bindkey |
Variable curpos |
' prev-line ctrl P bindkey |
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' clear-tib ctrl K bindkey |
s" os-type" environment? [IF] s" cygwin" str= [IF] |
' first-pos ctrl A bindkey |
: save-cursor ( -- ) #esc emit '7 emit ; |
' end-pos ctrl E bindkey |
: restore-cursor ( -- ) #esc emit '8 emit ; |
' (enter) #lf bindkey |
: cur-correct ( addr u -- ) 2drop ; |
' (enter) #cr bindkey |
[ELSE] |
' tab-expand #tab bindkey |
: 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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: 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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: 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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Line 233 Create prefix-found 0 , 0 ,
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Line 322 Create prefix-found 0 , 0 ,
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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 |
Line 248 Create prefix-found 0 , 0 ,
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Line 337 Create prefix-found 0 , 0 ,
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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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: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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