version 1.5, 1995/04/30 23:18:21
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version 1.8, 1995/11/07 18:06:45
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\ History file support 16oct94py |
\ History file support 16oct94py |
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\ Copyright (C) 1995 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., 675 Mass Ave, Cambridge, MA 02139, USA. |
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0 Value history |
0 Value history |
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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 -- handle ) |
check-file-prefix drop |
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2dup r/w open-file 0< |
2dup r/w open-file 0< |
IF drop r/w create-file throw ELSE nip nip THEN |
IF drop r/w create-file throw ELSE nip nip THEN ; |
to history |
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: get-history ( addr len -- wid ) |
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force-open to history |
history file-size throw |
history file-size throw |
2dup forward^ 2! 2dup backward^ 2! end^ 2! ; |
2dup forward^ 2! 2dup backward^ 2! end^ 2! ; |
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s" ~/gforth.history" get-history |
s" ~/.gforth-history" get-history |
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: history-cold Defers 'cold |
: history-cold |
s" ~/gforth.history" get-history ; |
Defers 'cold |
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s" ~/.gforth-history" get-history ; |
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' history-cold IS 'cold |
' history-cold IS 'cold |
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Line 29 s" ~/gforth.history" get-history
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Line 49 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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: 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 backward^ 2@ forward^ 2! |
2dup history reposition-file throw |
over 2 + negate s>d backward^ 2@ d+ 0. dmax 2dup hist-setpos |
BEGIN 2over swap history read-line throw WHILE |
BEGIN |
>r history file-position throw |
backward^ 2! 2dup get-line WHILE |
2dup backward^ 2@ d< WHILE 2swap 2drop rdrop |
hist-pos 2dup forward^ 2@ d< WHILE |
REPEAT ELSE >r history file-position throw THEN |
rot drop |
forward^ 2! backward^ 2! r> tuck 2dup type 0 ; |
REPEAT 2drop THEN |
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tuck 2dup type 0 ; |
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: ctrl ( "<char>" -- ctrl-code ) |
: ctrl ( "<char>" -- ctrl-code ) |
char [char] @ - postpone Literal ; immediate |
char [char] @ - postpone Literal ; immediate |
Line 55 s" ~/gforth.history" get-history
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Line 78 s" ~/gforth.history" get-history
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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 81 Create prefix-found 0 , 0 ,
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Line 103 Create prefix-found 0 , 0 ,
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IF r> char+ capscomp 0<= EXIT THEN |
IF r> char+ capscomp 0<= EXIT THEN |
nip r> c@ $1F and < ; |
nip r> c@ $1F and < ; |
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: search-prefix ( addr len1 -- suffix len2 ) 0 >r context |
: search-voc ( addr len nfa1 nfa2 -- addr len nfa3 ) >r |
BEGIN BEGIN dup @ over cell - @ = WHILE cell - REPEAT |
BEGIN dup WHILE >r dup r@ cell+ c@ $1F and <= |
dup >r -rot r> @ @ |
IF 2dup r@ cell+ char+ capscomp 0= |
BEGIN dup WHILE >r dup r@ cell+ c@ $1F and <= |
IF r> dup r@ word-lex |
IF 2dup r@ cell+ char+ capscomp 0= |
IF dup prefix-found @ word-lex |
IF r> dup r@ word-lex |
0>= IF rdrop dup >r THEN |
IF dup prefix-found @ word-lex |
THEN >r |
0>= IF rdrop dup >r THEN |
THEN |
THEN >r |
THEN r> @ |
THEN |
REPEAT drop r> ; |
THEN r> @ |
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REPEAT drop rot cell - dup vp u> 0= |
: prefix-string ( addr len nfa -- addr' len' ) |
UNTIL drop r> dup prefix-found ! ?dup |
dup prefix-found ! ?dup |
IF cell+ count $1F and rot /string rot drop |
IF cell+ count $1F and rot /string rot drop |
ELSE 2drop s" " THEN ; |
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+ @ @ 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 search-prefix |
2dup extract-word 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 ; |