version 1.9, 1996/01/07 17:22:11
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version 1.21, 2000/04/12 20:53:46
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\ History file support 16oct94py |
\ command line edit and history support 16oct94py |
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\ Copyright (C) 1995 Free Software Foundation, Inc. |
\ Copyright (C) 1995 Free Software Foundation, Inc. |
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\ along with this program; if not, write to the Free Software |
\ along with this program; if not, write to the Free Software |
\ Foundation, Inc., 675 Mass Ave, Cambridge, MA 02139, USA. |
\ Foundation, Inc., 675 Mass Ave, Cambridge, MA 02139, USA. |
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0 Value history |
: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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: eof 2 pick over or 0= IF |
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bye |
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ELSE 2 pick over <> |
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IF forw drop (del) ELSE #bell emit THEN 0 |
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THEN ; |
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' forw ctrl F cells ctrlkeys + ! |
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' back ctrl B cells ctrlkeys + ! |
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' ?del ctrl H cells ctrlkeys + ! |
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' eof ctrl D cells ctrlkeys + ! |
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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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: force-open ( addr len -- handle ) |
: 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 |
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drop r/w create-file throw |
: get-history ( addr len -- wid ) |
ELSE |
force-open to history |
nip nip |
history file-size throw |
THEN ; |
2dup forward^ 2! 2dup backward^ 2! end^ 2! ; |
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s" os-class" environment? [IF] s" unix" compare 0= [ELSE] true [THEN] |
s" ~/.gforth-history" get-history |
[IF] |
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: history-file ( -- addr u ) |
: history-cold |
s" GFORTHHIST" getenv dup 0= IF |
Defers 'cold |
2drop s" ~/.gforth-history" |
s" ~/.gforth-history" get-history ; |
THEN ; |
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[ELSE] |
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' history-cold IS 'cold |
: 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 62 s" ~/.gforth-history" get-history
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Line 111 s" ~/.gforth-history" get-history
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hist-pos forward^ 2! |
hist-pos forward^ 2! |
tuck 2dup type 0 ; |
tuck 2dup type 0 ; |
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: prev-line ( max span addr pos1 -- max span addr pos2 false ) |
: find-prev-line ( max addr -- max span addr pos2 ) |
clear-line backward^ 2@ forward^ 2! |
backward^ 2@ forward^ 2! |
over 2 + negate s>d backward^ 2@ d+ 0. dmax 2dup hist-setpos |
over 2 + negate s>d backward^ 2@ d+ 0. dmax 2dup hist-setpos |
BEGIN |
BEGIN |
backward^ 2! 2dup get-line WHILE |
backward^ 2! 2dup get-line WHILE |
hist-pos 2dup forward^ 2@ d< WHILE |
hist-pos 2dup forward^ 2@ d< WHILE |
rot drop |
rot drop |
REPEAT 2drop THEN |
REPEAT 2drop THEN tuck ; |
tuck 2dup type 0 ; |
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: ctrl ( "<char>" -- ctrl-code ) |
: prev-line ( max span addr pos1 -- max span addr pos2 false ) |
char [char] @ - postpone Literal ; immediate |
clear-line find-prev-line 2dup type 0 ; |
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Create lfpad #lf c, |
Create lfpad #lf c, |
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Line 145 Create prefix-found 0 , 0 ,
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Line 193 Create prefix-found 0 , 0 ,
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: search-prefix ( addr1 len1 -- addr2 len2 ) |
: search-prefix ( addr1 len1 -- addr2 len2 ) |
0 vp dup @ 1- cells over + |
0 vp dup @ 1- cells over + |
DO I 2@ <> |
DO I 2@ <> |
IF I cell+ @ @ swap search-voc THEN |
IF I cell+ @ wordlist-id @ swap search-voc THEN |
[ -1 cells ] Literal +LOOP |
[ -1 cells ] Literal +LOOP |
prefix-string ; |
prefix-string ; |
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Line 175 Create prefix-found 0 , 0 ,
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Line 223 Create prefix-found 0 , 0 ,
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' (enter) #lf cells ctrlkeys + ! |
' (enter) #lf cells ctrlkeys + ! |
' (enter) #cr cells ctrlkeys + ! |
' (enter) #cr cells ctrlkeys + ! |
' tab-expand #tab cells ctrlkeys + ! |
' tab-expand #tab cells ctrlkeys + ! |
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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 |
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[ #lf cells ctrlkeys + ]L ! |
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[ #cr cells ctrlkeys + ]L ! |
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[ ctrl P cells ctrlkeys + ]L ! |
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[ ctrl N cells ctrlkeys + ]L ! |
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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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