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volksFORTH Full-Screen-Editor HELP Screen cas 11nov05 Quit Editor : flushed: ESC updated: ^E discard changes : ^U (UNDO) move cursor : Cursorkeys (delete with DEL or <- ) insert : INS (toggle), ^ENTER (insert Screen) Tabs : TAB (to right), SHIFT TAB (to left) paging : Pg Dn (next screen), Pg Up (previous scr) : F9 (alternate), SHIFT F9 (shadow scr) mark alternate Scr. : F10 delete/insert line : ^Y (delete), ^N (insert) split line : ^PgDn (split), ^PgUp (join) search and replace : F2 (stop with ESC, replace with 'R' ) linebuffer : F3 (push&delete), F5 (push), F7 (pop) charbuffer : F4 (push&delete), F6 (push), F8 (pop) misc : ^F (Fix), ^L (Showload), ^S (Screen #) --> \ Full-Screen Editor cas 10nov05This is the Full-Screen Editor for MS-DOS volksFORTH Features: Line- and Char-Buffer, Find- and Replace, Support for "Shadow-Screens", View Function and loading of screens with visual feedback (showload) The Keybinding can be easily changed by using the integrated Keytable. Ported to the MS-DOS volksFORTH by K.Schleisiek on 22 dez 87 Original design by Ullrich Hoffmann \ Load Screen for the Editor cas 10nov05 Onlyforth \needs Assembler 2 loadfrom asm.scr 3 load \ PC adaption 4 9 thru \ Editor \ &10 load \ ANSI display interface \ &11 load \ BIOS display interface &12 load \ MULTItasking display interface &13 &39 thru \ Editor Onlyforth .( Screen Editor loaded ) cr \ BIM adaption UH 11dez88 | : ?range ( n -- n ) isfile@ 0=exit dup 0< 9 and ?diskerror dup capacity - 1+ 0 max ?dup 0=exit more ; | : block ( n -- adr ) ?range block ; $1B Constant #esc : curon &11 &12 curshape ; : curoff &14 dup curshape ; Variable caps caps off Label ?capital 1 # caps #) byte test 0= ?[ (capital # jmp ]? ret end-code \ search delete insert replace ks 20 dez 87 | : delete ( buffer size count -- ) over min >r r@ - ( left over ) dup 0> IF 2dup swap dup r@ + -rot swap cmove THEN + r> bl fill ; | : insert ( string length buffer size -- ) rot over min >r r@ - ( left over ) over dup r@ + rot cmove> r> cmove ; | : replace ( string length buffer size -- ) rot min cmove ; \ usefull definitions and Editor vocabulary UH 11mai88 Vocabulary Editor ' Forth | Alias [F] immediate ' Editor | Alias [E] immediate Editor also definitions | : c ( n --) \ moves cyclic thru the screen r# @ + b/blk mod r# ! ; | Variable r#' r#' off | Variable scr' scr' off ' fromfile | Alias isfile' | Variable lastfile | Variable lastscr | Variable lastr# \\ move cursor with position-checking ks 18 dez 87 \ different versions of cursor positioning error reporting | : c ( n --) \ checks the cursor position r# @ + dup 0 b/blk uwithin not Abort" There is a border!" r# ! ; | : c ( n --) \ goes thru the screens r# @ + dup b/blk 1- > IF 1 scr +! THEN dup 0< IF -1 scr +! THEN b/blk mod r# ! ; | : c ( n --) \ moves cyclic thru the screen r# @ + b/blk mod r# ! ; \ calculate addresses ks 20 dez 87 | : *line ( l -- adr ) c/l * ; | : /line ( n -- c l ) c/l /mod ; | : top ( -- ) r# off ; | : cursor ( -- n ) r# @ ; | : 'start ( -- adr ) scr @ block ; | : 'end ( -- adr ) 'start b/blk + ; | : 'cursor ( -- adr ) 'start cursor + ; | : position ( -- c l ) cursor /line ; | : line# ( -- l ) position nip ; | : col# ( -- c ) position drop ; | : 'line ( -- adr ) 'start line# *line + ; | : 'line-end ( -- adr ) 'line c/l + 1- ; | : #after ( -- n ) c/l col# - ; | : #remaining ( -- n ) b/blk cursor - ; | : #end ( -- n ) b/blk line# *line - ; \ move cursor directed UH 11dez88| Create >at 0 , 0 , | : curup c/l negate c ; | : curdown c/l c ; | : curleft -1 c ; | : curright 1 c ; | : +tab ( 1/4 -> ) cursor $10 / 1+ $10 * cursor - c ; | : -tab ( 1/8 <- ) cursor 8 mod negate dup 0= 8 * + c ; | : >last ( adr len -- ) -trailing nip b/blk min r# ! ; | : <cr> #after c ; | : <line ( -- ) col# negate c 'line c/l -trailing nip 0=exit BEGIN 'cursor c@ bl = WHILE curright REPEAT ; | : line> ( -- ) 'start line# 1+ *line 1- >last ; | : >""end ( -- ) 'start b/blk >last ; \ show border UH 29Sep87 &14 | Constant dx 1 | Constant dy | : horizontal ( row eck1 eck2 -- row' ) rot dup >r dx 1- at swap emit c/l 0 DO Ascii - emit LOOP emit r> 1+ ; | : vertical ( row -- row' ) l/s 0 DO dup dx 1- at Ascii | emit row dx c/l + at Ascii | emit 1+ LOOP ; | : border dy 1- Ascii / Ascii \ horizontal vertical Ascii \ Ascii / horizontal drop ; | : edit-at ( -- ) position swap dy dx d+ at ; \ ANSI display interface ks 03 feb 88 | : redisplay ( line# -- ) dup dy + dx at *line 'start + c/l type ; | : (done ( -- ) ; immediate | : install-screen ( -- ) l/s 6 + 0 >at 2! page ; \ BIOS-display interface ks 03 feb 88 | Code (.line ( line addr videoseg -- ) A pop W pop I push E: push D E: mov $0E # W add W W add A I xchg c/l # C mov attribut #) A+ mov [[ byte lods stos C0= ?] E: pop I pop D pop Next end-code | : redisplay ( line# -- ) dup 1+ c/row * swap c/l * 'start + video@ (.line ; | : (done ( -- ) ; immediate | : install-screen ( -- ) l/s 6 + 0 >at 2! page ; \ MULTI-display interface ks UH 10Sep87| Code (.line ( line addr videoseg -- ) C pop W pop I push E: push D E: mov $0E # W add W W add u' area U D) I mov u' catt I D) A+ mov C I mov c/l # C mov [[ byte lods stos C0= ?] E: pop I pop D pop Next end-code | : redisplay ( line# -- ) dup 1+ c/row * swap c/l * 'start + video@ (.line ; | : (done ( -- ) line# 2+ c/col 2- window ; | : cleartop ( -- ) 0 l/s 5 + window (page ; | : install-screen ( -- ) row l/s 6 + u< IF l/s 6 + 0 full page ELSE at? cleartop THEN >at 2! ; \ display screen UH 11mai88Forth definitions : updated? ( -- f) 'start 2- @ 0< ; Editor definitions | : .updated ( -- ) 9 0 at updated? IF 4 spaces ELSE ." not " THEN ." updated" ; | : .screen l/s 0 DO I redisplay LOOP ; \ | : .file ( fcb -- ) \ ?dup IF body> >name .name exit THEN ." direct" ; | : .title [ DOS ] 1 0 at isfile@ .file dx 1- tab 2 0 at drv (.drv scr @ 6 .r 4 0 at fromfile @ .file dx 1- tab 5 0 at fswap drv (.drv scr' @ 6 .r fswap .updated ; | : .all .title .screen ; \ check errors UH 02Nov86 | : ?bottom ( -- ) 'end c/l - c/l -trailing nip Abort" You would lose a line" ; | : ?fit ( n -- ) 'line c/l -trailing nip + c/l > IF line# redisplay true Abort" You would lose a char" THEN ; | : ?end 1 ?fit ; \ programmer's id ks 18 dez 87 $12 | Constant id-len Create id id-len allot id id-len erase | : stamp ( -- ) id 1+ count 'start c/l + over - swap cmove ; | : ?stamp ( -- ) updated? IF stamp THEN ; | : ## ( n -- ) base push decimal 0 <# # # #> id 1+ attach ; | : get-id ( -- ) id c@ ?exit ID on cr ." Enter your ID : " at? 3 0 DO Ascii . emit LOOP at id 2+ 3 expect normal span @ dup id 1+ c! 0=exit bl id 1+ append date@ rot ## swap >months id 1+ attach ## ; \ update screen-display UH 28Aug87 | : emptybuf prev @ 2+ dup on 4+ off ; | : undo emptybuf .all ; | : modified updated? ?exit update .updated ; | : linemodified modified line# redisplay ; | : screenmodified modified l/s line# ?DO I redisplay LOOP ; | : .modified ( -- ) >at 2@ at space scr @ . updated? not IF ." un" THEN ." modified" ?stamp ; \ leave editor UH 10Sep87| Variable (pad (pad off | : memtop ( -- adr) sp@ $100 - ; | Create char 1 allot | Variable imode imode off | : .imode at? 7 0 at imode @ IF ." insert " ELSE ." overwrite" THEN at ; | : setimode imode on .imode ; | : clrimode imode off .imode ; | : done ( -- ) (done ['] (quit is 'quit ['] (error errorhandler ! quit ; | : update-exit ( -- ) .modified done ; | : flushed-exit ( -- ) .modified save-buffers done ; \ handle screens UH 21jan89 | : insert-screen ( scr -- ) \ before scr 1 more fromfile push isfile@ fromfile ! capacity 2- over 1+ convey ; | : wipe-screen ( -- ) 'start b/blk blank ; | : new-screen ( -- ) scr @ insert-screen wipe-screen top screenmodified ; \ handle lines UH 01Nov86 | : (clear-line 'line c/l blank ; | : clear-line (clear-line linemodified ; | : clear> 'cursor #after blank linemodified ; | : delete-line 'line #end c/l delete screenmodified ; | : backline curup delete-line ; | : (insert-line ?bottom 'line c/l over #end insert (clear-line ; | : insert-line (insert-line screenmodified ; \ join and split lines UH 11dez88 | : insert-spaces ( n -- ) 'cursor swap 2dup over #remaining insert blank ; | : split ( -- ) ?bottom cursor col# <cr> insert-spaces r# ! #after insert-spaces screenmodified ; | : delete-characters ( n -- ) 'cursor #remaining rot delete ; | : join ( -- ) cursor <cr> line> col# <line col# under - rot r# ! #after > Abort" next line will not fit!" #after + dup delete-characters cursor <cr> c/l rot - dup 0< IF negate insert-spaces ELSE delete-characters THEN r# ! screenmodified ; \ handle characters UH 01Nov86 | : delete-char 'cursor #after 1 delete linemodified ; | : backspace curleft delete-char ; | : (insert-char ?end 'cursor 1 over #after insert ; | : insert-char (insert-char bl 'cursor c! linemodified ; | : putchar ( --) char c@ imode @ IF (insert-char THEN 'cursor c! linemodified curright ; \ stack lines UH 31Oct86 | Create lines 4 allot \ { 2+pointer | 2base } | : 'lines ( -- adr) lines 2@ + ; | : @line 'lines memtop u> Abort" line buffer full" 'line 'lines c/l cmove c/l lines +! ; | : copyline @line curdown ; | : line>buf @line delete-line ; | : !line c/l negate lines +! 'lines 'line c/l cmove ; | : buf>line lines @ 0= Abort" line buffer empty" ?bottom (insert-line !line screenmodified ; \ stack characters UH 01Nov86 | Create chars 4 allot \ { 2+pointer | 2base } | : 'chars ( -- adr) chars 2@ + ; | : @char 'chars 1- lines 2+ @ u> Abort" char buffer full" 'cursor c@ 'chars c! 1 chars +! ; | : copychar @char curright ; | : char>buf @char delete-char ; | : !char -1 chars +! 'chars c@ 'cursor c! ; | : buf>char chars @ 0= Abort" char buffer empty" ?end (insert-char !char linemodified ; \ switch screens UH 11mai88 | : imprint ( -- ) \ remember valid file isfile@ lastfile ! scr @ lastscr ! r# @ lastr# ! ; | : remember ( -- ) lastfile @ isfile ! lastscr @ scr ! lastr# @ r# ! ; | : associate \ switch to alternate screen isfile' @ isfile@ isfile' ! isfile ! scr' @ scr @ scr' ! scr ! r#' @ r# @ r#' ! r# ! ; | : mark isfile@ isfile' ! scr @ scr' ! r# @ r#' ! .all ; | : n ?stamp 1 scr +! .all ; | : b ?stamp -1 scr +! .all ; | : a ?stamp associate .all ; \ shadow screens UH 03Nov86 Variable shadow shadow off | : (shadow isfile@ IF capacity 2/ exit THEN shadow @ ; | : >shadow ?stamp \ switch to shadow screen (shadow dup scr @ u> not IF negate THEN scr +! .all ; \ load and show screens ks 02 mar 88 | : showoff ['] exit 'name ! normal ; | : show ( -- ) blk @ 0= IF showoff exit THEN >in @ 1- r# ! edit-at imprint blk @ scr @ - 0=exit blk @ scr ! normal curoff .all invers curon ; | : showload ( -- ) ?stamp save-buffers ['] show 'name ! curon invers adr .status push ['] noop is .status scr @ scr push scr off r# push r# @ (load showoff ; \ find strings ks 20 dez 87 | Variable insert-buffer | Variable find-buffer | : 'insert ( -- addr ) insert-buffer @ ; | : 'find ( -- addr ) find-buffer @ ; | : .buf ( addr -- ) count type ." |" &80 col - spaces ; | : get ( addr -- ) >r at? r@ .buf 2dup at r@ 1+ c/l expect span @ ?dup IF r@ c! THEN at r> .buf ; | : get-buffers dy l/s + 2+ dx 1- 2dup at ." find: |" 'find get swap 1+ swap 2- at ." ? replace: |" 'insert get ; \ ks 20 dez 87 Code match ( addr1 len1 string -- addr2 len2 ) D W mov W ) D- mov $FF # D and 0= ?[ D pop Next ]? W inc D dec C pop I A mov I pop A push W ) A- mov W inc ?capital # call A- A+ mov D C sub >= ?[ I inc Label done I dec A pop I push A I mov C D add Next ]? [[ byte lods ?capital # call A+ A- cmp 0= ?[ D D or done 0= not ?] I push W push C push A push D C mov [[ byte lods ?capital # call A+ A- xchg W ) A- mov W inc ?capital # call A+ A- cmp 0= ?[[ C0= ?] A pop C pop W pop I pop done ]] ]? A pop C pop W pop I pop ]? C0= ?] I inc done ]] end-code \ search for string UH 11mai88 | : skip ( addr -- addr' ) 'find c@ + ; | : search ( buf len string -- offset flag ) >r stash r@ match r> c@ < IF drop 0= false exit THEN swap - true ; | : find? ( -- r# f ) 'cursor #remaining 'find search ; | : searchthru ( -- r# scr ) find? IF skip cursor + scr @ exit THEN drop capacity scr @ 1+ ?DO I 2 3 at 6 .r I block b/blk 'find search IF skip I endloop exit THEN stop? Abort" Break!" LOOP true Abort" not found!" ; \ replace strings UH 14mai88| : replace? ( -- f ) dy l/s + 3+ dx 3 - at key dup #cr = IF line# redisplay true Abort" Break!" THEN capital Ascii R = ; | : "mark ( -- ) r# push 'find count dup negate c edit-at invers type normal ; | : (replace 'insert c@ 'find c@ - ?fit r# push 'find c@ negate c 'cursor #after 'find c@ delete 'insert count 'cursor #after insert modified ; | : "replace get-buffers BEGIN searchthru scr @ - ?dup IF ?stamp scr +! .all THEN r# ! imprint "mark replace? IF (replace THEN line# redisplay REPEAT ;\ Display Help-Screen, misc commands cas 11nov05 | : helpfile ( -- ) fromfile push editor.fb ; | : .help ( --) isfile push scr push helpfile scr off .screen ; | : help ( -- ) .help key drop .screen ; | : screen# ( -- scr ) scr @ ; | Defer (fix-word | : fix-word ( -- ) isfile@ loadfile ! scr @ blk ! cursor >in ! (fix-word ; \ Control-Characters IBM-PC Functionkeys UH 10Sep87 Forth definitions : Ctrl ( -- c ) name 1+ c@ $1F and state @ IF [compile] Literal THEN ; immediate \needs #del $7F Constant #del Editor definitions | : flipimode imode @ 0= imode ! .imode ; | : F ( # -- 16b ) $FFC6 swap - ; | : shift ( n -- n' ) dup 0< + &24 - ; \ Control-Characters IBM-PC Functionkeys UH 11dez88 Create keytable -&72 , -&75 , -&80 , -&77 , 3 F , 4 F , 7 F , 8 F , Ctrl F , Ctrl S , 5 F , 6 F , 1 F , Ctrl H , #del , -&83 , Ctrl Y , Ctrl N , -&82 , #cr , #tab , #tab shift , -&119 , -&117 , 2 F , Ctrl U , Ctrl E , #esc , Ctrl L , 9 F shift , -&81 , -&73 , 9 F , &10 F , -&71 , -&79 , -&118 , -&132 , #lf , here keytable - 2/ Constant #keys \ Try a screen Editor UH 11dez88 Create: actiontable curup curleft curdown curright line>buf char>buf buf>line buf>char fix-word screen# copyline copychar help backspace backspace delete-char ( insert-char ) delete-line insert-line flipimode ( clear-line clear> ) <cr> +tab -tab top >""end "replace undo update-exit flushed-exit showload >shadow n b a mark <line line> split join new-screen ; here actiontable - 2/ 1- #keys - abort( # of actions) \ find keys ks 20 dez 87 | : findkey ( key -- adr/default ) #keys 0 DO dup keytable [F] I 2* + @ = IF drop [E] actiontable [F] I 2* + @ endloop exit THEN LOOP drop ['] putchar ; \ allocate buffers UH 01Nov86 c/l 2* | Constant cstack-size | : nextbuf ( adr -- adr' ) cstack-size + ; | : ?clearbuffer pad (pad @ = ?exit pad dup (pad ! nextbuf dup find-buffer ! 'find off nextbuf dup insert-buffer ! 'insert off nextbuf dup 0 chars 2! nextbuf 0 lines 2! ; \ enter and exit the editor, editor's loop UH 11mai88 | Variable jingle jingle on | : bell 07 charout jingle off ; | : clear-error ( -- ) jingle @ ?exit dy l/s + 1+ dx at c/l spaces jingle on ; | : fullquit ( -- ) BEGIN ?clearbuffer edit-at key dup char c! findkey imprint execute ( .status ) clear-error REPEAT ; | : fullerror ( string -- ) jingle @ IF bell THEN count dy l/s + 1+ over 2/ dx $20 + swap - at invers type normal &80 col - spaces remember .all quit ; | : install ( -- ) ['] fullquit Is 'quit ['] fullerror errorhandler ! ; \ enter and exit the Editor UH 11mai88 Forth definitions : v ( -- ) [E] 'start drop get-id install-screen install ?clearbuffer border .all .imode .status quit ; ' v Alias ed : l ( scr -- ) 1 arguments scr ! [E] top [F] v ; ' l Alias edit \ savesystem enhanced view UH 24jun88 : savesystem [E] id off (pad off savesystem ; Editor definitions | : >find ?clearbuffer >in push name dup c@ 2+ >r bl over c! r> 'find place ; Forth definitions : fix [ Dos ] >find ' @view >file isfile ! scr ! [E] top curdown find? IF skip 1- THEN c v ; ' fix Is (fix-word |