version 1.2, 1994/10/27 16:32:21
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version 1.3, 1994/11/03 15:27:57
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\ History file support 16oct94py |
\ History file support 16oct94py
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0 Value history |
0 Value history
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2Variable forward^ |
2Variable forward^
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2Variable backward^ |
2Variable backward^
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2Variable end^ |
2Variable end^
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: get-history ( addr len -- wid ) |
: get-history ( addr len -- wid )
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2dup r/w open-file 0< |
2dup r/w open-file 0<
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IF drop r/w create-file throw ELSE nip nip THEN |
IF drop r/w create-file throw ELSE nip nip THEN
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to history |
to history
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history file-size throw |
history file-size throw
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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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\ moving in history file 16oct94py |
\ moving in history file 16oct94py
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: clear-line ( max span addr pos1 -- max addr ) |
: clear-line ( max span addr pos1 -- max addr )
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backspaces over spaces swap backspaces ; |
backspaces over spaces swap backspaces ;
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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 )
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clear-line 0 tuck dup ; |
clear-line 0 tuck dup ;
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: get-line ( max addr -- max span addr pos dpos ) |
: get-line ( max addr -- max span addr pos dpos )
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history file-position throw backward^ 2! |
history file-position throw backward^ 2!
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2dup swap history read-line throw drop |
2dup swap history read-line throw drop
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2dup type tuck |
2dup type tuck
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history file-position throw forward^ 2! ; |
history file-position throw forward^ 2! ;
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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 )
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clear-line |
clear-line
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forward^ 2@ history reposition-file throw |
forward^ 2@ history reposition-file throw
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get-line 0 ; |
get-line 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 )
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clear-line over 2 + negate s>d backward^ 2@ d+ 0. dmax |
clear-line over 2 + negate s>d backward^ 2@ d+ 0. dmax
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2dup history reposition-file throw |
2dup history reposition-file throw
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BEGIN 2over swap history read-line throw WHILE |
BEGIN 2over swap history read-line throw WHILE
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>r history file-position throw |
>r history file-position throw
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2dup backward^ 2@ d< WHILE 2swap 2drop rdrop |
2dup backward^ 2@ d< WHILE 2swap 2drop rdrop
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REPEAT ELSE >r history file-position throw THEN |
REPEAT ELSE >r history file-position throw THEN
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forward^ 2! backward^ 2! r> tuck 2dup type 0 ; |
forward^ 2! backward^ 2! r> tuck 2dup type 0 ;
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: ctrl ( "<char>" -- ctrl-code ) |
: ctrl ( "<char>" -- ctrl-code )
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char [char] @ - postpone Literal ; immediate |
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 )
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>r end^ 2@ history reposition-file throw |
>r end^ 2@ history reposition-file throw
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2dup swap history write-file throw |
2dup swap history write-file throw
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lfpad 1 history write-file throw |
lfpad 1 history write-file throw
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history file-position throw 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
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: first-pos ( max span addr pos1 -- max span addr 0 0 ) |
: first-pos ( max span addr pos1 -- max span addr 0 0 )
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backspaces 0 0 ; |
backspaces 0 0 ;
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: end-pos ( max span addr pos1 -- max span addr span 0 ) |
: end-pos ( max span addr pos1 -- max span addr span 0 )
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type-rest 2drop over 0 ; |
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
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BEGIN 1- dup 0>= WHILE 2dup + c@ bl = UNTIL THEN 1+ |
BEGIN 1- dup 0>= WHILE 2dup + c@ bl = UNTIL THEN 1+
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tuck + r> rot - ; |
tuck + r> rot - ;
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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 )
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dup 0= IF 2drop 1 EXIT THEN |
dup 0= IF 2drop 1 EXIT THEN
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cell+ >r cell+ count $1F and |
cell+ >r cell+ count $1F and
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dup r@ c@ $1F and = |
dup r@ c@ $1F and =
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IF r> char+ capscomp 0<= EXIT THEN |
IF r> char+ capscomp 0<= EXIT THEN
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nip r> c@ $1F and < ; |
nip r> c@ $1F and < ;
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: search-prefix ( addr len1 -- suffix len2 ) |
: search-prefix ( addr len1 -- suffix len2 ) 0 >r context
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context @ @ 0 >r |
BEGIN BEGIN dup @ over cell - @ = WHILE cell - REPEAT
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BEGIN dup WHILE |
dup >r -rot r> @ @
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>r dup r@ cell+ c@ $1F and <= |
BEGIN dup WHILE >r dup r@ cell+ c@ $1F and <=
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IF 2dup r@ cell+ char+ capscomp 0= |
IF 2dup r@ cell+ char+ capscomp 0=
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IF r> dup r@ word-lex |
IF r> dup r@ word-lex
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IF dup prefix-found @ word-lex |
IF dup prefix-found @ word-lex
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0>= IF rdrop dup >r THEN |
0>= IF rdrop dup >r THEN
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THEN >r |
THEN >r
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THEN |
THEN
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THEN r> @ |
THEN r> @
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REPEAT drop r> dup prefix-found ! ?dup |
REPEAT drop rot cell - dup vp u> 0=
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IF cell+ count $1F and rot /string rot drop |
UNTIL drop r> dup prefix-found ! ?dup
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ELSE 2drop s" " THEN ; |
IF cell+ count $1F and rot /string rot drop
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ELSE 2drop s" " THEN ;
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: tab-expand ( max span addr pos1 -- max span addr pos2 0 ) |
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prefix-found cell+ @ 0 ?DO (del) LOOP |
: tab-expand ( max span addr pos1 -- max span addr pos2 0 )
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2dup extract-word search-prefix |
prefix-found cell+ @ 0 ?DO (del) LOOP
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dup prefix-found @ 0<> - prefix-found cell+ ! |
2dup extract-word search-prefix
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bounds ?DO I c@ (ins) LOOP |
dup prefix-found @ 0<> - prefix-found cell+ !
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prefix-found @ IF bl (ins) THEN 0 ; |
bounds ?DO I c@ (ins) LOOP
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prefix-found @ IF bl (ins) THEN 0 ;
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: kill-prefix ( key -- key ) |
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dup #tab <> IF 0 0 prefix-found 2! THEN ; |
: kill-prefix ( key -- key )
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dup #tab <> IF 0 0 prefix-found 2! THEN ;
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' kill-prefix IS everychar |
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' kill-prefix IS everychar
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' next-line ctrl N cells ctrlkeys + ! |
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' prev-line ctrl P cells ctrlkeys + ! |
' next-line ctrl N cells ctrlkeys + !
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' clear-tib ctrl K cells ctrlkeys + ! |
' prev-line ctrl P cells ctrlkeys + !
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' first-pos ctrl A cells ctrlkeys + ! |
' clear-tib ctrl K cells ctrlkeys + !
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' end-pos ctrl E cells ctrlkeys + ! |
' first-pos ctrl A cells ctrlkeys + !
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' (enter) #lf cells ctrlkeys + ! |
' end-pos ctrl E cells ctrlkeys + !
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' (enter) #cr cells ctrlkeys + ! |
' (enter) #lf cells ctrlkeys + !
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' tab-expand #tab cells ctrlkeys + ! |
' (enter) #cr cells ctrlkeys + !
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' tab-expand #tab cells ctrlkeys + !
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