version 1.1, 1994/10/18 15:57:17
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version 1.27, 2001/09/15 20:40:47
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\ History file support 16oct94py |
\ command line edit and history support 16oct94py |
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0 Value history |
\ Copyright (C) 1995,2000 Free Software Foundation, Inc. |
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\ This file is part of Gforth. |
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\ Gforth is free software; you can redistribute it and/or |
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\ modify it under the terms of the GNU General Public License |
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\ as published by the Free Software Foundation; either version 2 |
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\ of the License, or (at your option) any later version. |
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\ This program is distributed in the hope that it will be useful, |
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\ but WITHOUT ANY WARRANTY; without even the implied warranty of |
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\ MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the |
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\ GNU General Public License for more details. |
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\ You should have received a copy of the GNU General Public License |
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\ along with this program; if not, write to the Free Software |
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\ Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA 02111, USA. |
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:noname |
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char [char] @ - ; |
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:noname |
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char [char] @ - postpone Literal ; |
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interpret/compile: ctrl ( "<char>" -- ctrl-code ) |
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\ command line editing 16oct94py |
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: >string ( span addr pos1 -- span addr pos1 addr2 len ) |
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over 3 pick 2 pick chars /string ; |
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: 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 + ! ; |
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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 |
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0 Value history \ history file fid |
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2Variable forward^ |
2Variable forward^ |
2Variable backward^ |
2Variable backward^ |
2Variable end^ |
2Variable end^ |
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: get-history ( addr len -- wid ) |
: force-open ( addr len -- fid ) |
2dup r/w open-file 0< |
2dup r/w open-file |
IF drop r/w create-file throw ELSE nip nip THEN |
IF |
to history |
drop r/w create-file throw |
history file-size throw |
ELSE |
2dup forward^ 2! 2dup backward^ 2! end^ 2! ; |
nip nip |
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THEN ; |
s" gforth.history" get-history |
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s" os-class" environment? [IF] s" unix" compare 0= [ELSE] true [THEN] |
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[IF] |
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: history-file ( -- addr u ) |
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s" GFORTHHIST" getenv dup 0= IF |
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2drop s" ~/.gforth-history" |
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THEN ; |
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[ELSE] |
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: history-dir ( -- addr u ) |
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s" TMP" getenv ?dup ?EXIT drop |
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s" TEMP" getenv ?dup ?EXIT drop |
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s" c:/" ; |
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: history-file ( -- addr u ) |
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s" GFORTHHIST" getenv ?dup ?EXIT |
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drop |
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history-dir pad place |
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s" /ghist.fs" pad +place pad count ; |
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[THEN] |
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\ moving in history file 16oct94py |
\ moving in history file 16oct94py |
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Line 23 s" gforth.history" get-history
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Line 100 s" gforth.history" get-history
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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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: get-line ( max addr -- max span addr pos dpos ) |
: hist-pos ( -- ud ) history file-position throw ; |
history file-position throw backward^ 2! |
: hist-setpos ( ud -- ) history reposition-file throw ; |
2dup swap history read-line throw drop |
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2dup type tuck |
: get-line ( addr len -- len' flag ) |
history file-position throw forward^ 2! ; |
swap history read-line throw ; |
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: next-line ( max span addr pos1 -- max span addr pos2 false ) |
: next-line ( max span addr pos1 -- max span addr pos2 false ) |
clear-line |
clear-line |
forward^ 2@ history reposition-file throw |
forward^ 2@ 2dup hist-setpos backward^ 2! |
get-line 0 ; |
2dup get-line drop |
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hist-pos forward^ 2! |
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tuck 2dup type 0 ; |
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: find-prev-line ( max addr -- max span addr pos2 ) |
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backward^ 2@ forward^ 2! |
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over 2 + negate s>d backward^ 2@ d+ 0. dmax 2dup hist-setpos |
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BEGIN |
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backward^ 2! 2dup get-line WHILE |
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hist-pos 2dup forward^ 2@ d< WHILE |
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rot drop |
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REPEAT 2drop THEN tuck ; |
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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 over 2 + negate s>d backward^ 2@ d+ 0. dmax |
clear-line find-prev-line 2dup type 0 ; |
history reposition-file throw 0. |
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BEGIN 2over swap history read-line throw nip WHILE |
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history file-position throw |
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2dup backward^ 2@ d< WHILE 2swap 2drop |
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REPEAT 2drop THEN |
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history reposition-file throw get-line 0 ; |
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: ctrl ( "<char>" -- ctrl-code ) |
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char [char] @ - postpone Literal ; immediate |
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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@ history reposition-file throw |
>r end^ 2@ hist-setpos |
2dup swap history write-file throw |
2dup swap history write-line throw |
lfpad 1 history write-file throw |
hist-pos 2dup backward^ 2! end^ 2! |
history file-position throw 2dup backward^ 2! end^ 2! |
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r> (ret) ; |
r> (ret) ; |
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\ some other key commands 16oct94py |
\ some other key commands 16oct94py |
Line 69 Create lfpad #lf c,
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Line 147 Create lfpad #lf c,
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Create prefix-found 0 , 0 , |
Create prefix-found 0 , 0 , |
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: word-lex ( nfa1 nfa2 -- -1/0/1 ) |
: word-lex ( nfa1 nfa2 -- -1/0/1 ) |
dup 0= IF 2drop 1 EXIT THEN |
dup 0= |
cell+ >r cell+ count $1F and |
IF |
dup r@ c@ $1F and = |
2drop 1 EXIT |
IF r> char+ capscomp 0<= EXIT THEN |
THEN |
nip r> c@ $1F and < ; |
name>string 2>r name>string |
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dup r@ = |
: search-prefix ( addr len1 -- suffix len2 ) |
IF |
context @ @ 0 >r |
rdrop r> capscomp 0<= EXIT |
BEGIN dup WHILE |
THEN |
>r dup r@ cell+ c@ $1F and <= |
r> < |
IF 2dup r@ cell+ char+ capscomp 0= |
nip rdrop ; |
IF r> dup r@ word-lex |
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IF dup prefix-found @ word-lex |
: search-voc ( addr len nfa1 nfa2 -- addr len nfa3 ) |
0>= IF rdrop dup >r THEN |
>r |
THEN >r |
BEGIN |
THEN |
dup |
THEN r> @ |
WHILE |
REPEAT drop r> dup prefix-found ! ?dup |
>r dup r@ name>string nip <= |
IF cell+ count $1F and rot /string rot drop |
IF |
ELSE 2drop s" " THEN ; |
2dup r@ name>string drop capscomp 0= |
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IF |
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r> dup r@ word-lex |
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IF |
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dup prefix-found @ word-lex |
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0>= |
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IF |
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rdrop dup >r |
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THEN |
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THEN |
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>r |
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THEN |
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THEN |
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r> @ |
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REPEAT |
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drop r> ; |
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: prefix-string ( addr len nfa -- addr' len' ) |
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dup prefix-found ! ?dup |
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IF |
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name>string rot /string rot drop |
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dup 1+ prefix-found cell+ ! |
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ELSE |
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2drop s" " prefix-found cell+ off |
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THEN ; |
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: search-prefix ( addr1 len1 -- addr2 len2 ) |
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0 vp dup @ 1- cells over + |
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DO I 2@ <> |
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IF I cell+ @ wordlist-id @ swap search-voc THEN |
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[ -1 cells ] Literal +LOOP |
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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 ) |
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5 pick over 4 pick + prefix-found @ 0<> - < ; |
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: tab-expand ( max span addr pos1 -- max span addr pos2 0 ) |
: tab-expand ( max span addr pos1 -- max span addr pos2 0 ) |
prefix-found cell+ @ 0 ?DO (del) LOOP |
kill-expand 2dup extract-word dup 0= IF nip EXIT THEN |
2dup extract-word search-prefix |
search-prefix tib-full? |
dup prefix-found @ 0<> - prefix-found cell+ ! |
IF 7 emit 2drop 0 0 prefix-found 2! |
bounds ?DO I c@ (ins) LOOP |
ELSE bounds ?DO I c@ (ins) LOOP THEN |
prefix-found @ IF bl (ins) THEN 0 ; |
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 0 0 prefix-found 2! THEN ; |
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' kill-prefix IS everychar |
' kill-prefix IS everychar |
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' next-line ctrl N cells ctrlkeys + ! |
' next-line ctrl N bindkey |
' prev-line ctrl P cells ctrlkeys + ! |
' prev-line ctrl P bindkey |
' clear-tib ctrl K cells ctrlkeys + ! |
' clear-tib ctrl K bindkey |
' first-pos ctrl A cells ctrlkeys + ! |
' first-pos ctrl A bindkey |
' end-pos ctrl E cells ctrlkeys + ! |
' end-pos ctrl E bindkey |
' (enter) #lf cells ctrlkeys + ! |
' (enter) #lf bindkey |
' (enter) #cr cells ctrlkeys + ! |
' (enter) #cr bindkey |
' tab-expand #tab cells ctrlkeys + ! |
' tab-expand #tab bindkey |
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\ initializing history |
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: get-history ( addr len -- ) |
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['] force-open catch |
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?dup-if |
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\ !! >stderr |
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\ history-file type ." : " .error cr |
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drop 2drop |
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['] false ['] false ['] (ret) |
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else |
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to history |
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history file-size throw |
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2dup forward^ 2! 2dup backward^ 2! end^ 2! |
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['] next-line ['] prev-line ['] (enter) |
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endif |
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dup #lf bindkey |
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#cr bindkey |
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ctrl P bindkey |
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ctrl N bindkey |
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; |
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: history-cold ( -- ) |
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history-file get-history ; |
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' history-cold INIT8 chained |
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history-cold |
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