--- gforth/history.fs 1997/03/04 22:09:53 1.14 +++ gforth/history.fs 2008/05/07 20:38:46 1.71 @@ -1,12 +1,12 @@ \ command line edit and history support 16oct94py -\ Copyright (C) 1995 Free Software Foundation, Inc. +\ Copyright (C) 1995,2000,2003,2004,2005,2006,2007 Free Software Foundation, Inc. \ This file is part of Gforth. \ Gforth is free software; you can redistribute it and/or \ modify it under the terms of the GNU General Public License -\ as published by the Free Software Foundation; either version 2 +\ as published by the Free Software Foundation, either version 3 \ of the License, or (at your option) any later version. \ This program is distributed in the hope that it will be useful, @@ -15,44 +15,22 @@ \ GNU General Public License for more details. \ You should have received a copy of the GNU General Public License -\ along with this program; if not, write to the Free Software -\ Foundation, Inc., 675 Mass Ave, Cambridge, MA 02139, USA. +\ along with this program. If not, see http://www.gnu.org/licenses/. +: ctrl-i ( "" -- c ) + char toupper $40 xor ; + +' ctrl-i :noname - char [char] @ - ; -:noname - char [char] @ - postpone Literal ; + ctrl-i postpone Literal ; interpret/compile: ctrl ( "" -- ctrl-code ) \ command line editing 16oct94py : >string ( span addr pos1 -- span addr pos1 addr2 len ) over 3 pick 2 pick chars /string ; -: type-rest ( span addr pos1 -- span addr pos1 back ) - >string tuck type ; -: (del) ( max span addr pos1 -- max span addr pos2 ) - 1- >string over 1+ -rot move - rot 1- -rot #bs emit type-rest bl emit 1+ backspaces ; -: (ins) ( max span addr pos1 char -- max span addr pos2 ) - >r >string over 1+ swap move 2dup chars + r> swap c! - rot 1+ -rot type-rest 1- backspaces 1+ ; -: ?del ( max span addr pos1 -- max span addr pos2 0 ) - dup IF (del) THEN 0 ; -: (ret) type-rest drop true space ; -: back dup IF 1- #bs emit ELSE #bell emit THEN 0 ; -: forw 2 pick over <> IF 2dup + c@ emit 1+ ELSE #bell emit THEN 0 ; -: eof 2 pick over or 0= IF - bye - ELSE 2 pick over <> - IF forw drop (del) ELSE #bell emit THEN 0 - THEN ; -' forw ctrl F cells ctrlkeys + ! -' back ctrl B cells ctrlkeys + ! -' ?del ctrl H cells ctrlkeys + ! -' eof ctrl D cells ctrlkeys + ! - -' (ins) IS insert-char +: bindkey ( xt key -- ) cells ctrlkeys + ! ; \ history support 16oct94py @@ -63,36 +41,57 @@ interpret/compile: ctrl ( "" -- c 2Variable end^ : force-open ( addr len -- fid ) - 2dup r/w open-file 0< - IF drop r/w create-file throw ELSE nip nip THEN ; - -: get-history ( addr len -- ) - force-open to history - history file-size throw - 2dup forward^ 2! 2dup backward^ 2! end^ 2! ; - -s" GFORTHHIST" getenv dup 0= [IF] - 2drop s" ~/.gforth-history" -[THEN] get-history + 2dup r/w open-file + IF + drop r/w create-file throw + ELSE + nip nip + THEN ; -: history-cold - Defers 'cold +s" os-class" environment? [IF] s" unix" str= [ELSE] true [THEN] +[IF] +: history-file ( -- addr u ) s" GFORTHHIST" getenv dup 0= IF 2drop s" ~/.gforth-history" - THEN get-history ; + THEN ; +[ELSE] -' history-cold IS 'cold +: history-dir ( -- addr u ) + s" TMP" getenv ?dup ?EXIT drop + s" TEMP" getenv ?dup ?EXIT drop + s" c:/" ; + +: history-file ( -- addr u ) + s" GFORTHHIST" getenv ?dup ?EXIT + drop + history-dir pad place + s" /ghist.fs" pad +place pad count ; +[THEN] \ moving in history file 16oct94py -: clear-line ( max span addr pos1 -- max addr ) - backspaces over spaces swap backspaces ; +defer back-restore ( u -- ) +defer cur-correct ( addr u -- ) +' backspaces IS back-restore +' 2drop IS cur-correct + +Variable linew +Variable screenw +: linew-off linew off cols screenw ! ; -: clear-tib ( max span addr pos -- max 0 addr 0 false ) - clear-line 0 tuck dup ; +[IFDEF] x-width +: clear-line ( max span addr pos1 -- max addr ) + drop linew @ back-restore over over swap x-width + dup spaces back-restore nip linew off ; +[ELSE] +: clear-line ( max span addr pos1 -- max addr ) + back-restore over spaces swap back-restore ; +[THEN] +\ : clear-tib ( max span addr pos -- max 0 addr 0 false ) +\ clear-line 0 tuck dup ; -: hist-pos ( -- ud ) history file-position throw ; -: hist-setpos ( ud -- ) history reposition-file throw ; +: hist-pos ( -- ud ) history file-position drop ( throw ) ; +: hist-setpos ( ud -- ) history reposition-file drop ( throw ) ; : get-line ( addr len -- len' flag ) swap history read-line throw ; @@ -102,39 +101,44 @@ s" GFORTHHIST" getenv dup 0= [IF] forward^ 2@ 2dup hist-setpos backward^ 2! 2dup get-line drop hist-pos forward^ 2! - tuck 2dup type 0 ; + tuck 2dup type 2dup cur-correct 0 ; -: prev-line ( max span addr pos1 -- max span addr pos2 false ) - clear-line backward^ 2@ forward^ 2! +: find-prev-line ( max addr -- max span addr pos2 ) + backward^ 2@ forward^ 2! over 2 + negate s>d backward^ 2@ d+ 0. dmax 2dup hist-setpos BEGIN backward^ 2! 2dup get-line WHILE hist-pos 2dup forward^ 2@ d< WHILE rot drop - REPEAT 2drop THEN - tuck 2dup type 0 ; + REPEAT 2drop THEN tuck ; + +: prev-line ( max span addr pos1 -- max span addr pos2 false ) + clear-line find-prev-line 2dup type 2dup cur-correct 0 ; -Create lfpad #lf c, +\ Create lfpad #lf c, : (enter) ( max span addr pos1 -- max span addr pos2 true ) >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! r> (ret) ; -\ some other key commands 16oct94py - -: first-pos ( max span addr pos1 -- max span addr 0 0 ) - backspaces 0 0 ; -: end-pos ( max span addr pos1 -- max span addr span 0 ) - type-rest 2drop over 0 ; - : extract-word ( addr len -- addr' len' ) dup >r BEGIN 1- dup 0>= WHILE 2dup + c@ bl = UNTIL THEN 1+ tuck + r> rot - ; Create prefix-found 0 , 0 , +: sgn ( n -- -1/0/1 ) + dup 0= IF EXIT THEN 0< 2* 1+ ; + +: capscomp ( c_addr1 u c_addr2 -- n ) + swap bounds + ?DO dup c@ I c@ <> + IF dup c@ toupper I c@ toupper = + ELSE true THEN WHILE 1+ LOOP drop 0 + ELSE c@ toupper I c@ toupper - unloop THEN sgn ; + : word-lex ( nfa1 nfa2 -- -1/0/1 ) dup 0= IF @@ -172,45 +176,192 @@ Create prefix-found 0 , 0 , REPEAT drop r> ; +: prefix-off ( -- ) 0 0 prefix-found 2! ; + : prefix-string ( addr len nfa -- addr' len' ) dup prefix-found ! ?dup IF name>string rot /string rot drop dup 1+ prefix-found cell+ ! ELSE - 2drop s" " prefix-found cell+ off + 2drop s" " prefix-off THEN ; : search-prefix ( addr1 len1 -- addr2 len2 ) 0 vp dup @ 1- cells over + DO I 2@ <> - IF I cell+ @ @ swap search-voc THEN + IF I cell+ @ wordlist-id @ swap search-voc THEN [ -1 cells ] Literal +LOOP prefix-string ; -: kill-expand ( max span addr pos1 -- max span addr pos2 ) - prefix-found cell+ @ 0 ?DO (del) LOOP ; - : tib-full? ( max span addr pos addr' len' -- max span addr pos addr1 u flag ) 5 pick over 4 pick + prefix-found @ 0<> - < ; -: tab-expand ( max span addr pos1 -- max span addr pos2 0 ) - kill-expand 2dup extract-word search-prefix - tib-full? - IF 7 emit 2drop 0 0 prefix-found 2! - ELSE bounds ?DO I c@ (ins) LOOP THEN - prefix-found @ IF bl (ins) THEN 0 ; - : kill-prefix ( key -- key ) - dup #tab <> IF 0 0 prefix-found 2! THEN ; + dup #tab <> IF prefix-off THEN ; + +\ UTF-8 support + +require utf-8.fs + +[IFUNDEF] #esc 27 Constant #esc [THEN] + +: at-deltaxy ( dx dy -- ) + over 0< over 0= and IF drop abs backspaces EXIT THEN + base @ >r decimal + ?dup IF + #esc emit '[ emit dup abs 0 .r 0< IF 'A ELSE 'B THEN emit + THEN + ?dup IF + #esc emit '[ emit dup abs 0 .r 0< IF 'D ELSE 'C THEN emit + THEN r> base ! ; + +\ : cygwin? ( -- flag ) s" TERM" getenv s" cygwin" str= ; +\ : at-xy? ( -- x y ) +\ key? drop \ make sure prep_terminal() is executed +\ #esc emit ." [6n" 0 0 +\ BEGIN key dup 'R <> WHILE +\ dup '; = IF drop swap ELSE +\ dup '0 '9 1+ within IF '0 - swap 10 * + ELSE +\ drop THEN THEN +\ REPEAT drop 1- swap 1- ; +\ : cursor@ ( -- n ) at-xy? screenw @ * + ; +\ : cursor! ( n -- ) screenw @ /mod at-xy ; +: xcur-correct ( addr u -- ) x-width linew ! ; + +' xcur-correct IS cur-correct + +: xback-restore ( u -- ) + screenw @ /mod negate swap negate swap at-deltaxy ; +: .rest ( addr pos1 -- addr pos1 ) + linew @ xback-restore 2dup type 2dup cur-correct ; +: .all ( span addr pos1 -- span addr pos1 ) + linew @ xback-restore >r 2dup swap type 2dup swap cur-correct r> ; + +: xretype ( max span addr pos1 -- max span addr pos1 f ) + .all cols screenw @ >r screenw ! + linew @ screenw @ / linew @ r@ / max + screenw @ r> - * 0 max + dup spaces linew +! .rest false ; + +\ In the following, addr max is the buffer, addr span is the current +\ string in the buffer, and pos1 is the cursor position in the buffer. + +: ( max span addr pos1 xc -- max span addr pos2 ) + >r 2over r@ xc-size + u< IF ( max span addr pos1 R:xc ) + rdrop bell EXIT THEN + >string over r@ xc-size + swap move + 2dup chars + r@ swap r@ xc-size xc!+? 2drop drop + r> xc-size >r rot r@ chars + -rot r> chars + ; +: (xins) ( max span addr pos1 xc -- max span addr pos2 ) + key? 0= IF .all .rest THEN ; +: xback ( max span addr pos1 -- max span addr pos2 f ) + dup IF over + xchar- over - 0 max .all .rest + ELSE bell THEN 0 ; +: xforw ( max span addr pos1 -- max span addr pos2 f ) + 2 pick over <> IF over + xc@+ xemit over - ELSE bell THEN + 2dup cur-correct 0 ; +: (xdel) ( max span addr pos1 -- max span addr pos2 ) + over + dup xchar- tuck - >r over - + >string over r@ + -rot move + rot r> - -rot ; +: ?xdel ( max span addr pos1 -- max span addr pos2 0 ) + dup IF (xdel) .all 2 spaces 2 linew +! .rest THEN 0 ; +: ( max span addr pos1 -- max span addr pos2 0 ) + 2 pick over <> + IF xforw drop (xdel) .all 2 spaces 2 linew +! .rest + ELSE bell THEN 0 ; +: xeof 2 pick over or 0= IF bye ELSE THEN ; + +: xfirst-pos ( max span addr pos1 -- max span addr 0 0 ) + drop 0 .all .rest 0 ; +: xend-pos ( max span addr pos1 -- max span addr span 0 ) + drop over .all 0 ; + + +: xclear-line ( max span addr pos1 -- max addr ) + 2dup x-width dup xback-restore dup spaces xback-restore drop nip ; +: xclear-tib ( max span addr pos -- max 0 addr 0 false ) + xclear-line 0 tuck dup ; + +: (xenter) ( max span addr pos1 -- max span addr pos2 true ) + >r end^ 2@ hist-setpos + 2dup swap history write-line drop ( throw ) \ don't worry about errors + hist-pos 2dup backward^ 2! end^ 2! + r> .all space true ; + +: xkill-expand ( max span addr pos1 -- max span addr pos2 ) + prefix-found cell+ @ ?dup IF >r + r@ - >string over r@ + -rot move + rot r@ - -rot .all r@ spaces r> back-restore .rest THEN ; + +: insert ( string length buffer size -- ) + rot over min >r r@ - ( left over ) + over dup r@ + rot move r> move ; + +: xtab-expand ( max span addr pos1 -- max span addr pos2 0 ) + key? IF #tab (xins) 0 EXIT THEN + xkill-expand 2dup extract-word dup 0= IF nip EXIT THEN + search-prefix tib-full? + IF bell 2drop prefix-off + ELSE dup >r + 2>r >string r@ + 2r> 2swap insert + r@ + rot r> + -rot + THEN + prefix-found @ IF bl (xins) ELSE .all .rest THEN 0 ; + +: xchar-history ( -- ) + ['] xforw ctrl F bindkey + ['] xback ctrl B bindkey + ['] ?xdel ctrl H bindkey + ['] xeof ctrl D bindkey + ['] ctrl X bindkey + ['] xclear-tib ctrl K bindkey + ['] xfirst-pos ctrl A bindkey + ['] xend-pos ctrl E bindkey + ['] xretype ctrl L bindkey + history IF ['] (xenter) #lf bindkey THEN + history IF ['] (xenter) #cr bindkey THEN + ['] xtab-expand #tab bindkey + ['] (xins) IS insert-char + ['] kill-prefix IS everychar +[ifdef] everyline + ['] linew-off IS everyline +[endif] + ['] xback-restore IS back-restore + ['] xcur-correct IS cur-correct +; + +xchar-history + +\ initializing history + +: get-history ( addr len -- ) + ['] force-open catch + ?dup-if + \ !! >stderr + \ history-file type ." : " .error cr + drop 2drop 0 to history + ['] false ['] false ['] (ret) + else + to history + history file-size throw + 2dup forward^ 2! 2dup backward^ 2! end^ 2! + ['] next-line ['] prev-line ['] (enter) + endif + dup #lf bindkey + #cr bindkey + ctrl P bindkey + ctrl N bindkey +; + +: history-cold ( -- ) + history-file get-history xchar-history ; + +:noname ( -- ) + defers 'cold + history-cold +; is 'cold -' kill-prefix IS everychar +history-cold -' next-line ctrl N cells ctrlkeys + ! -' prev-line ctrl P cells ctrlkeys + ! -' clear-tib ctrl K cells ctrlkeys + ! -' first-pos ctrl A cells ctrlkeys + ! -' end-pos ctrl E cells ctrlkeys + ! -' (enter) #lf cells ctrlkeys + ! -' (enter) #cr cells ctrlkeys + ! -' tab-expand #tab cells ctrlkeys + !