nxu/femto.tal

1110 lines
33 KiB
Tal
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2022-02-09 20:04:12 -05:00
( femto.tal )
( )
( requires terminal to be in raw mode )
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( see femto launcher script for more details )
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( )
( ANSI sequences )
( )
( goto $row,$col ESC [ $row ; $col H )
( goto home ESC [ H )
( go up ESC [ A )
( go down ESC [ B )
( go right ESC [ C )
( go left ESC [ D )
( )
( query cursor ESC [ 6 n )
( )
( all scroll on ESC [ r )
( region scroll on ESC [ $y0 ; $y1 r )
( scroll down ESC D )
( scroll up ESC M )
( )
( erase cur->eol ESC [ K )
( erase cur->sol ESC [ 1 K )
( erase line ESC [ 2 K )
( erase line->bot ESC [ J )
( erase line->top ESC [ 1 J )
( erase all ESC [ 2 J )
( )
( set attrs ESC [ $at1 ; ... m )
( reset ESC [ m )
( 0 reset, 1 bright, 2 dim, )
( 4 underscore, 5 blink, )
( 7 reverse, 8 hidden )
( )
( fg (30-37), bg (40-47) )
( black, red, green, yellow, )
( blue, magenta, cyan, white )
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( TODO: )
( - optimize term drawing )
( - get long line truncation/scrolling working )
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( - allow line numbers to be toggled off )
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( - help text )
( - open file command? )
( - close file command? )
( - move by word/paragraph )
( - search )
( - search&replace )
( - windows line-ending support (CRLF) )
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( - consider using abssolute cursor positions )
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|00 @System [ &vector $2 &wst $1 &rst $1 &pad $4 &r $2 &g $2 &b $2 &debug $1 &halt $1 ]
|10 @Console [ &vector $2 &read $1 &pad $5 &write $1 &error $1 ]
|a0 @File [ &vector $2 &success $2 &stat $2 &delete $1 &append $1 &name $2 &length $2 &read $2 &write $2 ]
%dbg { #ff .System/debug DEO }
%emit { .Console/write DEO }
%sp { #2018 DEO }
%nl { #0a18 DEO }
%cr { #0d18 DEO }
%ansi { #1b18 DEO #5b18 DEO }
( emit macros )
( )
( these save one byte and are easier to read. )
%emit-! { LIT2 '! 18 DEO }
%emit-$ { LIT2 '$ 18 DEO }
%emit-( { LIT2 '( 18 DEO }
%emit-) { LIT2 ') 18 DEO }
%emit-, { LIT2 ', 18 DEO }
%emit-0 { LIT2 '0 18 DEO }
%emit-1 { LIT2 '1 18 DEO }
%emit-2 { LIT2 '2 18 DEO }
%emit-3 { LIT2 '3 18 DEO }
%emit-6 { LIT2 '6 18 DEO }
%emit-7 { LIT2 '7 18 DEO }
%emit-; { LIT2 '; 18 DEO }
%emit-C { LIT2 'C 18 DEO }
%emit-H { LIT2 'H 18 DEO }
%emit-J { LIT2 'J 18 DEO }
%emit-K { LIT2 'K 18 DEO }
%emit-[ { LIT2 '[ 18 DEO }
%emit-m { LIT2 'm 18 DEO }
%emit-n { LIT2 'n 18 DEO }
%emit-~ { LIT2 '~ 18 DEO }
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%quit! { #01 .System/halt DEO BRK }
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( zero page )
|0000
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@term [
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&cols $2 ( relative x coordinate of cursor, from 0 )
&rows $2 ( relative y coordinaet of cursor, from 1 )
&lmargin $2 ( left padding needed for line numbers )
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]
@config [
&tab-width $2 ( how many spaces to display tab chars )
&insert-tabs $1 ( tab key inserts tabs when true )
&color $2 ( digits of highlight color in reverse order )
]
@buffer [
&limit $2 ( last byte of actual data (not including \0) + 1 )
&offset $2 ( first byte of data visible in terminal )
&line-count $2 ( total number of lines in file )
&line-offset $2 ( first line of text visible in terminal )
]
( relative cursor positions, e.g. 0 to cols-1 )
@cursor [
&col $2 ( current column value 0-n (may exceed lenght of row) )
&row $2 ( current relative row value, 0-(height-1) )
]
@state [
&saw-esc $1 ( did we just see ESC? )
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&saw-xterm $1 ( did we just see an ESC [ xterm sequence? )
&saw-vt $1 ( did we just see an ESC [ $N vt sequence? )
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&modified $1 ( has the buffer been modified? )
&quitting $1 ( are we in the process of quitting? )
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]
( prompt uses .tmp/pos and .tmp/data to track user input )
@prompt [
&active $1 ( is prompt currently active? )
&vector $2 ( what code to run when user responds )
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&string $2 ( string to print for the prompt )
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]
@tmp [
&pos $2 ( temporary pointer to address when reading data )
&data $40 ( small scratch pad when reading data )
]
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( startup )
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|0100
;init-zero-page JSR2
;startup JMP2
( intialize zero page variables )
( )
( everything not specified starts as zero )
@init-zero-page ( -> )
#0050 .term/cols STZ2
#0018 .term/rows STZ2
#0006 .term/lmargin STZ2
#0004 .config/tab-width STZ2
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#00 .config/insert-tabs STZ
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#3333 .config/color STZ2
;data .buffer/offset STZ2
JMP2r
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( code to run on startup )
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@startup
;filename .tmp/pos STZ2
;read-filename .Console/vector DEO2
BRK
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( ERROR HANDLING )
( using error! will print the given message before causing )
( the interpreter to halt. )
@error! ( msg* -> )
emit-! sp
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&loop LDAk ,&continue JCN ,&done JMP
&continue LDAk emit INC2 ,&loop JMP
&done POP2 nl
dbg BRK
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@open-file ( filename* -> )
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.File/name DEO2
#f000 .File/length DEO2
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;data .File/read DEO2
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.File/success DEI2 #0000 GTH2 ,&ok JCN
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;messages/input-error ;print JSR2
;filename ;print JSR2 nl quit!
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( calculate buffer limit address using start + size )
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&ok .File/success DEI2 ;data ADD2 .buffer/limit STZ2
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JMP2r
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@setup-terminal-size ( -> )
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#03e7 DUP2 ;term-move-cursor JSR2
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;term-get-cursor-position JSR2
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;tmp/data .tmp/pos STZ2
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;receive-terminal-size .Console/vector DEO2
JMP2r
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@receive-terminal-size ( -> )
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.Console/read DEI .tmp/pos LDZ2 STA
.tmp/pos LDZ2 INC2 .tmp/pos STZ2
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.Console/read DEI LIT 'R EQU ;parse-terminal-size JCN2
BRK
@parse-terminal-size ( -> )
LIT2r 0000 LIT2r 0000
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.tmp/data LDZk #1b NEQ ,&parse-error JCN ( i ) INC
LDZk LIT '[ NEQ ,&parse-error JCN ( i ) INC
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&loop
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LDZk LIT '; EQU ,&parse-col JCN
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LIT2r 000a MUL2r
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LDZk LIT '0 SUB #00 SWP STH2 ADD2r
INC ,&loop JMP
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&parse-col
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INC STH2r #0002 SUB2 .term/rows STZ2
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&loop2
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LDZk LIT 'R EQU ,&done JCN
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LIT2r 000a MUL2r
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LDZk LIT '0 SUB #00 SWP STH2 ADD2r
INC ,&loop2 JMP
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&done
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STH2r .term/cols STZ2 POP
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;on-key .Console/vector DEO2
;draw-all JSR2
BRK
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&parse-error POP .tmp/data LDZ2
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;messages/term-size-parse-error ;error! JMP2
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@setup-linecount ( -> )
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;data LIT2r 0001
&loop DUP2 .buffer/limit LDZ2 EQU2 ,&done JCN
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LDAk #00 EQU ,&done JCN
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LDAk #09 NEQ ,&next JCN #01 .config/insert-tabs STZ
&next LDAk #0a NEQ JMP INC2r
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INC2 ,&loop JMP
&done POP2
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STH2r .buffer/line-count STZ2
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JMP2r
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@read-filename ( -> )
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#12 DEI #0a EQU ,&execute JCN ( did we read \n ? )
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#12 DEI .tmp/pos LDZ2 STA ( no, so save in buffer )
.tmp/pos LDZ2 INC2 .tmp/pos STZ2 ( pos++ )
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BRK ( return )
&execute ( we saw a newline, so do something )
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#00 .tmp/pos LDZ2 STA ( null terminate str )
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;filename ;open-file JSR2 ( open file )
;setup-linecount JSR2 ( determine # of lines )
;setup-terminal-size JSR2 ( detect terminal dimensions )
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BRK
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@bol ( -> )
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#0000 .cursor/col STZ2
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;draw-statusbar-and-cursor JSR2 BRK
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( FIXME: handle long lines )
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@eol ( -> )
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;cur-line JSR2 ;line-len JSR2 .cursor/col STZ2
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;draw-statusbar-and-cursor JSR2 BRK
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( FIXME: handle long lines )
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@forward ( -> )
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;cur-pos JSR2 ;last-pos JSR2 GTH2 ,&skip JCN
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;cur-col JSR2 ;cur-len JSR2 LTH2 ,&normal JCN ,&next-line JMP
&normal
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;cur-col JSR2 INC2 .cursor/col STZ2
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;draw-statusbar-and-cursor JSR2
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,&skip JMP
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&next-line #0000 .cursor/col STZ2
;inc-row JSR2
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;ensure-visible-cursor JSR2
;draw-cursor JSR2
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&skip BRK
( FIXME: handle long lines )
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@back ( -> )
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;cur-col JSR2 #0001 LTH2 ,&next-line JCN
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;cur-col JSR2 #0001 SUB2 .cursor/col STZ2
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;draw-statusbar-and-cursor JSR2 BRK
&next-line
;dec-row JSR2
;cur-len JSR2 .cursor/col STZ2
;ensure-visible-cursor JSR2 ( FIXME )
;draw-cursor JSR2 BRK
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@up ( -> )
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;cur-abs-row JSR2 #0000 EQU2 ,&done JCN
;dec-row JSR2
;ensure-visible-cursor JSR2
;draw-statusbar JSR2
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&done ;draw-cursor JSR2 BRK
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@down ( -> )
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;cur-abs-row JSR2 ;last-abs-row JSR2 EQU2 ,&done JCN
;inc-row JSR2
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;ensure-visible-cursor JSR2
;draw-statusbar JSR2
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&done ;draw-cursor JSR2 BRK
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@center-view
;term/rows LDZ2 INC2 #0002 DIV2 STH2k
.cursor/row LDZ2 LTH2 ,&standard JCN
POP2r
#0000 .buffer/line-offset STZ2
;data .buffer/offset STZ2
,&done JMP
&standard
.cursor/row LDZ2 STH2r SUB2
DUP2 .buffer/line-offset STZ2
;abs-line JSR2 .buffer/offset STZ2
&done
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;draw-all JSR2 BRK
@page-up ( -> )
.term/rows LDZ2 #0002 SUB2 STH2k
.buffer/line-offset LDZ2 LTH2 ,&move-full JCN
POP2r
;zero-row JSR2
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#0000 .cursor/col STZ2
,&done JMP
&move-full
.cursor/row LDZ2 STH2kr SUB2 .cursor/row STZ2
.buffer/line-offset LDZ2 STH2r SUB2
DUP2 .buffer/line-offset STZ2
;abs-line JSR2 .buffer/offset STZ2
&done
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;draw-all JSR2 BRK
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@page-down
;eof-is-visible JSR2 ,&near-eof JCN
.term/rows LDZ2 #0002 SUB2 STH2k
.buffer/line-offset LDZ2 ADD2
DUP2 .buffer/line-offset STZ2
;abs-line JSR2 .buffer/offset STZ2
.cursor/row LDZ2 STH2r ADD2 .cursor/row STZ2
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;draw-all JSR2 BRK
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&near-eof
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.buffer/line-count LDZ2 #0001 SUB2 ;set-abs-row JSR2
;cur-len JSR2 .cursor/col STZ2
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;draw-cursor JSR2 BRK
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@quit
#01 .state/quitting STZ
.state/modified LDZ ,&is-modified JCN
quit!
&is-modified
;messages/quit-prompt ;messages/null ;do-quit ;start-prompt JSR2
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;draw-prompt-and-cursor JSR2
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BRK
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@do-quit
.tmp/data LDZ LIT 'n EQU ;quit-now JCN2
.tmp/data LDZ LIT 'y EQU ;save JCN2
#00 .state/quitting STZ
;move-to-message-line JSR2
;messages/unknown-input ;print JSR2
;tmp/data ;print JSR2
BRK
@quit-now quit!
@ignore
;draw-cursor JSR2
BRK
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@insert ( c^ -> )
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#01 .state/modified STZ
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;cur-pos JSR2 ;shift-right JSR2
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;cur-col JSR2 INC2 .cursor/col STZ2
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;draw-all JSR2
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BRK
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@insert-prompt ( c^ -> )
.tmp/pos LDZ2 STH2k STA ( data[pos] <- c )
INC2r #00 STH2kr STA ( data[pos+1] <- 0 )
STH2r .tmp/pos STZ2 ( pos <- pos+1 )
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;draw-prompt-and-cursor JSR2
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BRK
@insert-tab ( -> )
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#01 .state/modified STZ
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.config/insert-tabs LDZ ,&use-tabs JCN
#0000 .config/tab-width LDZ2 SUB2
&loop
DUP2 #0000 EQU2 ,&done JCN
#20 ;cur-pos JSR2 ;shift-right JSR2
INC2 ,&loop JMP
&done
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;cur-col JSR2 .config/tab-width LDZ2 ADD2 .cursor/col STZ2
;draw-all JSR2 BRK
&use-tabs
#09 ;insert JMP2
( TODO: handle last line )
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@newline ( c^ -> )
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#01 .state/modified STZ
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#0a ;cur-pos JSR2 ;shift-right JSR2
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#0000 .cursor/col STZ2
;inc-row JSR2
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.buffer/line-count LDZ2k INC2 ROT STZ2
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;ensure-visible-cursor JSR2
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;draw-all JSR2
BRK
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@at-buffer-start ( -> bool^ )
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;cur-pos JSR2 ;data EQU2 JMP2r
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@at-line-start ( -> bool^ )
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.cursor/col LDZ2 #0000 EQU2 JMP2r
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@bof-is-visible ( -> bool^ )
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.buffer/line-offset LDZ2 #0000 EQU2 JMP2r
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@eof-is-visible ( -> bool^ )
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.buffer/line-offset LDZ2 .term/rows LDZ2 ADD2 INC2
.buffer/line-count LDZ2
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GTH2 JMP2r
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@backspace ( -> )
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;cur-col JSR2 #01 LTH ,&skip JCN
;cur-col JSR2 #0001 SUB2 .cursor/col STZ2
;delete JMP2
&skip BRK
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@backspace-prompt ( -> )
#00 .tmp/pos LDZ2 #0001 SUB2 ( 0 pos-1 )
STH2k STA ( data[pos-1] <- 0 )
STH2r .tmp/pos STZ2 ( pos <- pos-1 )
;draw-prompt JSR2
;draw-cursor JSR2
BRK
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@delete ( -> )
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#01 .state/modified STZ
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;last-pos JSR2 ;cur-pos JSR2 LTH2 ,&skip JCN
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;cur-pos JSR2 LDAk STH ( cur [c] )
;shift-left JSR2 ( [c] )
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STHr #0a NEQ ,&not-newline JCN
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.buffer/line-count LDZ2k #0001 SUB2 ROT STZ2
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&not-newline ;draw-all JSR2 BRK
&skip ;draw-cursor JSR2 BRK
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@escape ( -> )
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#01 .state/saw-esc STZ BRK
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@goto-end ( -> )
.buffer/line-count LDZ2 #0001 SUB2 .cursor/row STZ2
.buffer/line-count LDZ2 .term/rows LDZ2 LTH2k ,&use-zero JCN
SUB2 #0002 ADD2 ,&continue JMP
&use-zero
POP2 POP2 #0000
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&continue
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DUP2 .buffer/line-offset STZ2
;abs-line JSR2 .buffer/offset STZ2
;cur-len JSR2 .cursor/col STZ2
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;draw-all JSR2 BRK
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@goto-start ( -> )
;zero-row JSR2
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#0000 .cursor/col STZ2
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;draw-all JSR2
BRK
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@goto-line ( -> )
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;messages/goto-line ;messages/null ;do-goto-line ;start-prompt JSR2
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;draw-prompt-and-cursor JSR2
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BRK
@parse-decimal-number ( addr* -> n* ok^ )
LDAk ,&non-empty JCN
#00 JMP2r
&non-empty
LIT2r 0000
&loop
LDAk ,&continue JCN
POP2 STH2r #01 JMP2r
&continue
LDAk LIT '0 LTH ,&fail JCN
LDAk LIT '9 GTH ,&fail JCN
LIT2r 000a MUL2r
LDAk LIT '0 SUB #00 SWP STH2 ADD2r
INC2 ,&loop JMP
&fail
POP2r #00 JMP2r
@do-goto-line
;tmp/data ;parse-decimal-number JSR2
,&ok JCN
;move-to-message-line JSR2
;messages/unknown-input ;print JSR2
;tmp/data ;print JSR2
BRK
&ok
#0001 SUB2 ( convert 1-indexing to 0-indexing )
DUP2 .buffer/line-count LDZ2 LTH2 ,&within JCN
POP2 ;goto-end JMP2
&within
;jump-to-line JSR2
;draw-all JSR2
BRK
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@jump-to-line ( n* -> )
.term/rows LDZ2 INC2 #0002 DIV2 LTH2k ( n rows/2 n<rows/2? ) ,&early JCN
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OVR2 SWP2 SUB2 ( n n-rows/2 )
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.buffer/line-count LDZ2 ( n n-rows/2 lines )
.term/rows LDZ2 SUB2 ( n n-rows/2 lines-rows )
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GTH2k ( n n-rows/2 lines-rows n-rows/2>lines-rows? )
,&late JCN ( n n-rows/2 lines-rows )
POP2 ,&finish JMP
&early ( n rows/2 )
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POP2 #0000 ,&finish JMP ( n 0000 )
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&late ( n n-rows/2 lines-rows )
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NIP2
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&finish ( n o )
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SUB2k STH2 DUP2 ( n o o [n-o] )
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.buffer/line-offset STZ2 ( n o [n-o] )
;abs-line JSR2 .buffer/offset STZ2 ( n [n-o] )
#0000 .cursor/col STZ2 ( n [n-o] )
( POP2 STH2r .cursor/row STZ2 )
POP2r .cursor/row STZ2
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JMP2r
2022-03-07 22:38:02 -05:00
@ensure-visible-cursor
;cur-rel-row JSR2 .term/rows LDZ2 LTH2 ,&noop JCN
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;cur-abs-row JSR2 ;jump-to-line JSR2
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;draw-all JSR2
&noop JMP2r
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@debug
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;messages/rel-line-error ;error! JMP2
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2022-02-15 21:19:44 -05:00
@move-to-message-line ( -> )
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#0000 .term/rows LDZ2 #0002 ADD2 ;term-move-cursor JMP2
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( TODO: need to create draw-prompt and call it from draw-all )
( when called vector should end in BRK )
@start-prompt ( prompt* default* vector* -> )
.prompt/active LDZ ,&is-active JCN
#01 .prompt/active STZ ( prompt/active <- 1 )
.prompt/vector STZ2 ( prompt/vector <- vector )
DUP2 ;tmp/data ;str-copy JSR2 ( tmp/data <- default )
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;str-len JSR2 ;tmp/data ADD2 ( len(default)+data )
.tmp/pos STZ2 ( tmp/pos <- len(default)+data )
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.prompt/string STZ2 ( prompt/string <- prompt )
JMP2r
&is-active
#0000 DIV
( ends prompt without calling vector )
@cancel-prompt ( -> )
.prompt/active LDZ ,&is-active JCN
#0000 DIV
&is-active
#00 .prompt/active STZ
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#00 .state/quitting STZ
;draw-prompt-and-cursor JSR2
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BRK
( when called vector should end in BRK )
@finish-prompt ( -> )
.prompt/active LDZ ,&is-active JCN
#0000 DIV
&is-active
#00 .prompt/active STZ
;draw-prompt JSR2
;draw-cursor JSR2
.prompt/vector LDZ2 JMP2
@save
;messages/save-prompt ;filename ;do-save ;start-prompt JSR2
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;draw-prompt-and-cursor JSR2
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BRK
@do-save ( -> )
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.buffer/limit LDZ2 ;data SUB2 STH2 ( [size] )
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;tmp/data .File/name DEO2
STH2kr .File/length DEO2
;data .File/write DEO2
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;move-to-message-line JSR2
.File/success DEI2 STH2r EQU2 ( ok? ) ,&ok JCN
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;messages/save-failed ,&finish JMP
&ok
#00 .state/modified STZ
;tmp/data ;filename ;str-copy JSR2
;messages/save-ok
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&finish
;print JSR2 ;tmp/data ;print JSR2
;draw-all JSR2
.state/quitting LDZ ;quit-now JCN2
BRK
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@toggle-color ( -> )
.config/color LDZ2 #3733 EQU2 ,&wrap-around JCN
.config/color LDZ2 #0100 ADD2 .config/color STZ2 ,&done JMP
&wrap-around #3033 .config/color STZ2
&done ;draw-all JSR2 BRK
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@toggle-tabs ( -> )
.config/insert-tabs LDZk #01 EOR SWP STZ
;draw-statusbar-and-cursor JSR2 BRK
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( TODO: M-f and M-b for next/previous word )
( M-n and M-p for next/previous paragraph )
( maybe M-% for search&replace )
@on-key-escaped ( -> )
#00 .state/saw-esc STZ
.Console/read DEI LIT '< EQU ( M-< ) ;goto-start JCN2
.Console/read DEI LIT '> EQU ( M-> ) ;goto-end JCN2
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.Console/read DEI LIT 'c EQU ( M-c ) ;toggle-color JCN2
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.Console/read DEI LIT 'g EQU ( M-g ) ;goto-line JCN2
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.Console/read DEI LIT 't EQU ( M-t ) ;toggle-tabs JCN2
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.Console/read DEI LIT 'v EQU ( M-v ) ;page-up JCN2
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.Console/read DEI LIT '[ EQU ( M-[ ) ;xterm JCN2
BRK
@xterm
#01 .state/saw-xterm STZ BRK
@on-key-vt ( -> )
.state/saw-vt LDZk STH #00 SWP STZ
.Console/read DEI LIT '~ EQU ,&ok JCN
POPr BRK
&ok
STHr DUP LIT '1 NEQ ,&not-1 JCN
( ^[[1~ -> home ) POP ;bol JMP2
&not-1 DUP LIT '2 NEQ ,&not-2 JCN
( ^[[2~ -> insert ) POP BRK
&not-2 DUP LIT '3 NEQ ,&not-3 JCN
( ^[[3~ -> delete ) POP ;delete JMP2
&not-3 DUP LIT '4 NEQ ,&not-4 JCN
( ^[[4~ -> end ) POP ;eol JMP2
&not-4 DUP LIT '5 NEQ ,&not-5 JCN
( ^[[5~ -> page up ) POP ;page-up JMP2
&not-5 DUP LIT '6 NEQ ,&not-6 JCN
( ^[[6~ -> page down ) POP ;page-down JMP2
&not-6 DUP LIT '7 NEQ ,&not-7 JCN
( ^[[7~ -> home ) POP ;bol JMP2
&not-7 DUP LIT '8 NEQ ,&not-8 JCN
( ^[[8~ -> end ) POP ;eol JMP2
&not-8
( ??? ) POP BRK
@on-key-xterm ( -> )
#00 .state/saw-xterm STZ
.Console/read DEI LIT 'A EQU ( ^[[A -> up ) ;up JCN2
.Console/read DEI LIT 'B EQU ( ^[[B -> down ) ;down JCN2
.Console/read DEI LIT 'C EQU ( ^[[C -> right ) ;forward JCN2
.Console/read DEI LIT 'D EQU ( ^[[D -> left ) ;back JCN2
.Console/read DEI LIT 'F EQU ( ^[[F -> end ) ;eol JCN2
.Console/read DEI LIT 'H EQU ( ^[[H -> home ) ;bol JCN2
.Console/read DEI LIT '0 LTH ;ignore JCN2
.Console/read DEI LIT '8 GTH ;ignore JCN2
.Console/read DEI .state/saw-vt STZ ( ^[[1 through ^[[8 )
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BRK
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@clear-line ( -> )
ansi emit-2 emit-K JMP2r
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@clear-message-line
;move-to-message-line JSR2
;clear-line JSR2
JMP2r
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@on-key-prompt
.Console/read DEI #07 EQU ( C-g ) ;cancel-prompt JCN2
.Console/read DEI #0d EQU ( \r ) ;finish-prompt JCN2
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.Console/read DEI #7f EQU ( DEL ) ;backspace-prompt JCN2
.Console/read DEI #20 LTH ;ignore JCN2 ( ignore for now )
.Console/read DEI #7e GTH ;ignore JCN2 ( ignore for now )
.Console/read DEI ( printable ASCII ) ;insert-prompt JMP2
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BRK
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( TODO: C-h for help )
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( TODO: C-s for search )
( TODO: tab input? )
@on-key
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;clear-message-line JSR2
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.prompt/active LDZ ;on-key-prompt JCN2
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.state/saw-vt LDZ ;on-key-vt JCN2
.state/saw-xterm LDZ ;on-key-xterm JCN2
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.state/saw-esc LDZ ;on-key-escaped JCN2
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.Console/read DEI #01 EQU ( C-a ) ;bol JCN2
.Console/read DEI #02 EQU ( C-b ) ;back JCN2
.Console/read DEI #04 EQU ( C-d ) ;delete JCN2
.Console/read DEI #05 EQU ( C-e ) ;eol JCN2
.Console/read DEI #06 EQU ( C-f ) ;forward JCN2
.Console/read DEI #09 EQU ( \t ) ;insert-tab JCN2
.Console/read DEI #0c EQU ( C-l ) ;center-view JCN2
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.Console/read DEI #0d EQU ( \r ) ;newline JCN2
.Console/read DEI #0e EQU ( C-n ) ;down JCN2
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.Console/read DEI #0f EQU ( C-o ) ;save JCN2
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.Console/read DEI #10 EQU ( C-p ) ;up JCN2
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.Console/read DEI #16 EQU ( C-v ) ;page-down JCN2
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.Console/read DEI #18 EQU ( C-x ) ;quit JCN2
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.Console/read DEI #1a EQU ( C-z ) ;debug JCN2
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.Console/read DEI #1b EQU ( ESC ) ;escape JCN2
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.Console/read DEI #7f EQU ( DEL ) ;backspace JCN2
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.Console/read DEI #20 LTH ;ignore JCN2 ( ignore for now )
.Console/read DEI #7e GTH ;ignore JCN2 ( ignore for now )
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.Console/read DEI ( printable ASCII ) ;insert JMP2
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BRK
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@min2 ( x* y* -> min* )
LTH2k JMP SWP2 POP2 JMP2r
( @max2 ( x* y* -> min* )
GTH2k JMP SWP2 POP2 JMP2r )
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2022-02-18 00:20:09 -05:00
@term-move-cursor ( col* row* -> )
ansi INC2 ( row+1 ) ;emit-dec2 JSR2
emit-; INC2 ( col+1 ) ;emit-dec2 JSR2
emit-H JMP2r
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@term-move-right ( n* -> )
ansi ;emit-dec2 JSR2 emit-C JMP2r
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@term-get-cursor-position ( -> )
ansi emit-6 emit-n JMP2r
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2022-02-18 00:20:09 -05:00
@term-erase-all ( -> )
ansi emit-2 emit-J JMP2r
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( @offset-for-cur-row
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.buffer/offset LDZ2 ( offset )
#0000 ;cur-rel-row JSR2 SUB2 STH2 ( offset [-k] )
&loop STH2r ORA ,&next JCN
POP2r JMP2r
&next LDAk #0a NEQ JMP INC2r
INC2 ,&loop JMP )
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2022-02-18 00:20:09 -05:00
@draw-cursor ( -> )
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.prompt/active LDZ ,&on-prompt JCN
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;cur-w-col JSR2 .term/lmargin LDZ2 ADD2
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.term/cols LDZ2 LTH2 ,&ok JCN
( we have a long line )
( ;offset-for-cur-row JSR2 )
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&ok
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;cur-w-col JSR2 .term/lmargin LDZ2 ADD2
;cur-rel-row JSR2
;term-move-cursor JMP2
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&on-prompt
JMP2r
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2022-03-23 22:55:03 -04:00
@get-save-status
.state/modified LDZ ,&is-modified JCN
;messages/saved JMP2r
&is-modified ;messages/unsaved JMP2r
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@get-tab-status
.config/insert-tabs LDZ ,&tabs JCN
;messages/st-spaces JMP2r
&tabs ;messages/st-tabs JMP2r
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@draw-statusbar ( -> )
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#0000 .term/rows LDZ2 ;term-move-cursor JSR2
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;emit-color-reverse JSR2
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LIT2r 2018
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.term/cols LDZ2 #0000
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&loop GTH2k ,&continue JCN ,&done JMP
&continue DEOkr INC2 ,&loop JMP
&done POP2 POP2 POP2r
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2022-03-07 22:38:02 -05:00
#0000 .term/rows LDZ2 ;term-move-cursor JSR2
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;get-save-status JSR2 ;print JSR2
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;filename ;print JSR2
sp
emit-[
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.buffer/limit LDZ2 ;data SUB2 ;emit-dec2 JSR2
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;messages/bytes ;print JSR2
sp
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.buffer/line-count LDZ2 ;emit-dec2 JSR2
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;messages/lines ;print JSR2
sp
emit-(
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;cur-col JSR2 INC2 ;emit-dec2 JSR2
emit-,
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;cur-abs-row JSR2 INC2 ;emit-dec2 JSR2
emit-)
sp
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;get-tab-status JSR2 ;print JSR2
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;emit-reset JSR2
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JMP2r
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@draw-statusbar-and-cursor ( -> )
;draw-statusbar JSR2
;draw-cursor JMP2
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@draw-prompt ( -> )
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;clear-message-line JSR2
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.prompt/active LDZ ,&is-active JCN
JMP2r
&is-active
;emit-color-bold JSR2
.prompt/string LDZ2 ;print JSR2
;emit-reset JSR2
;tmp/data ;print JSR2
JMP2r
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@draw-prompt-and-cursor ( -> )
;draw-prompt JSR2
;draw-cursor JMP2
@draw-linenum ( n* -> )
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;emit-reset JSR2
ansi .config/color LDZ2 emit emit ( LIT 'm emit ) emit-m
;emit-dec2-pad JSR2
ansi ( LIT2 'm '0 emit emit ) emit-0 emit-m JMP2r
@emit-tab ( -> )
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#0000 .config/tab-width LDZ2 SUB2
LIT2r 2018
&loop ORAk ,&next JCN POP2 POP2r JMP2r
&next DEOkr INC2 ,&loop JMP
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@emit-red ( -> )
( ansi LIT '3 emit LIT '1 emit LIT 'm emit JMP2r )
ansi emit-3 emit-1 emit-m JMP2r
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@emit-reset ( -> )
( ansi LIT '0 emit LIT 'm emit JMP2r )
ansi emit-0 emit-m JMP2r
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@emit-red-dollar ( -> )
;emit-red JSR2 ( LIT '$ emit ) emit-$ ;emit-reset JMP2
2022-03-04 01:47:11 -05:00
2022-03-04 15:30:26 -05:00
@emit-color-reverse ( -> )
( ansi .config/color LDZ2 emit emit LIT2 '7 '; emit emit LIT 'm emit JMP2r )
ansi .config/color LDZ2 emit emit emit-; emit-7 emit-m JMP2r
2022-03-04 15:30:26 -05:00
2022-03-23 21:46:59 -04:00
@emit-color-bold ( -> )
( ansi .config/color LDZ2 emit emit LIT2 '1 '; emit emit LIT 'm emit JMP2r )
ansi .config/color LDZ2 emit emit emit-; emit-1 emit-m JMP2r
2022-03-23 21:46:59 -04:00
2022-02-18 00:20:09 -05:00
@draw-all ( -> )
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;term-erase-all JSR2
2022-02-18 00:20:09 -05:00
#0000 #0000 ;term-move-cursor JSR2
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.buffer/line-offset LDZ2 STH2 LIT2r 0001 ( [k line-offset] )
.buffer/offset LDZ2
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&bol
ADD2kr STH2r ;draw-linenum JSR2
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.term/lmargin LDZ2 INC2 ,&x STR2
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&loop ( offset [k line-offset] )
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LDAk #00 EQU ,&eof JCN
LDAk #0a EQU ,&eol JCN
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,&x LDR2 .term/cols LDZ2
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LTH2k ,&ok JCN
GTH2 ,&skip JCN
;emit-red-dollar JSR2 ,&x LDR2 INC2 ,&x STR2
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&skip INC2
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,&loop JMP
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&ok POP2 POP2
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LDAk #09 EQU ,&do-tab JCN
LDAk emit INC2 ,&x LDR2 INC2 ,&x STR2
,&loop JMP
&eol INC2r
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STH2kr .term/rows LDZ2 GTH2 ,&done JCN
cr nl INC2 ,&bol JMP
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&do-tab ;emit-tab JSR2 INC2
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.config/tab-width LDZ2 ,&x LDR2 ADD2 ,&x STR2
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,&loop JMP
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[ &x $2 ]
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&eof
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;emit-red JSR2
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&eof-loop
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STH2kr .term/rows LDZ2 GTH2 ,&done JCN
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cr nl
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.term/lmargin LDZ2 ;term-move-right JSR2
( LIT '~ emit ) emit-~ INC2r
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,&eof-loop JMP
&done POP2 POP2r POP2r
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;emit-reset JSR2
;draw-statusbar JSR2
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;draw-prompt-and-cursor JSR2
2022-02-06 17:07:11 -05:00
JMP2r
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@str-copy ( src* dst* -> )
STH2 ( src [dst] )
&loop LDAk #00 EQU ,&done JCN
LDAk STH2kr STA
INC2 INC2r ,&loop JMP
&done POP2 #00 STH2r STA
JMP2r
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@str-len ( s* -> n* )
LIT2r 0000
&loop LDAk #00 EQU ,&done JCN
INC2 INC2r ,&loop JMP
&done POP2 STH2r
JMP2r
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@print ( s* -> )
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&loop LDAk #00 EQU ,&eof JCN
LDAk #18 DEO INC2 ,&loop JMP
&eof POP2 JMP2r
@cur-len ( -> n* )
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;cur-line JSR2 ;line-len JMP2
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@cur-last ( -> n* )
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;cur-line JSR2 ;line-len JSR2 #0001 SUB2 JMP2r
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2022-03-25 00:12:09 -04:00
( @cur-width ( -> n* )
;cur-line JSR2 ;line-width JMP2 )
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( @cur-w-last ( -> n* )
;cur-line JSR2 ;line-width JSR2 #0001 SUB2 JMP2r )
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@line-len ( s* -> n* )
#0000 STH2
&loop LDAk #00 EQU ,&end JCN
LDAk #0a EQU ,&end JCN
INC2 INC2r ,&loop JMP
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&end POP2 STH2r JMP2r
( @line-width ( s* -> n* )
#0000 STH2
&loop LDAk #00 EQU ,&done JCN
LDAk #0a EQU ,&done JCN
LDAk #09 EQU ,&tabs JCN
INC2 INC2r ,&loop JMP
&tabs #0004 ADD2 ,&loop JMP
&done POP2 STH2r JMP2r )
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@abs-line ( y* -> s* )
#0000 SWP2 SUB2 STH2 ( [-y] )
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;data ( addr )
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&newline ( addr [-y] )
STH2kr ORA ,&loop JCN ,&done JMP
&loop ( addr [-y] )
LDAk #00 EQU ,&not-found JCN ( addr [-y] )
LDAk #0a EQU ,&found JCN ( addr [-y] )
INC2 ,&loop JMP ( addr+1 [-y] )
&found INC2 INC2r ( addr+1 [-y+1] ) ,&newline JMP
&done POP2r JMP2r
&not-found POP2 POP2r #0000 JMP2r
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( line number relative to the offset, starting at 0 )
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@rel-line ( y* -> s* )
#0000 SWP2 SUB2 STH2 ( [-y] )
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.buffer/offset LDZ2 ( addr* )
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STH2kr #0000 EQU2 ,&done JCN ( addr [-y] )
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&newline ( addr [-y] )
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STH2kr ORA ,&loop JCN ,&done JMP
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&loop ( addr [-y] )
LDAk #00 EQU ,&not-found JCN ( addr [-y] )
LDAk #0a EQU ,&found JCN ( addr [-y] )
INC2 ,&loop JMP ( addr+1 [-y] )
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&found INC2 INC2r ( addr+1 [-y+1] ) ,&newline JMP
&done POP2r JMP2r
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&not-found ;messages/rel-line-error ;error! JMP2
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@cur-line ( -> s* )
;cur-rel-row JSR2 .term/rows LDZ2 LTH2 ,&safe JCN
.cursor/row LDZ2 ;abs-line JMP2
&safe ;cur-rel-row JSR2 ;rel-line JMP2
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@cur-pos ( -> s* )
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;cur-line JSR2 ;cur-col JSR2 ADD2 JMP2r
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@cur-abs-row ( -> n* )
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;cur-rel-row JSR2 .buffer/line-offset LDZ2 ADD2 JMP2r
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@last-abs-row ( -> n* )
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.buffer/line-count LDZ2 #0001 SUB2 JMP2r
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@shift-right ( c^ addr* -> )
ROT STH ( addr [prev^] )
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;last-pos JSR2 SWP2 ( last addr [prev^] )
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&loop LTH2k ,&done JCN ( last addr [prev^] )
LDAk STH SWPr ( last addr [prev^ curr^] )
DUP2 STHr ( last addr addr prev^ [curr^] )
ROT ROT STA ( last addr [curr^] )
INC2 ,&loop JMP ( last addr+1 [curr^] )
&done NIP2 DUP2 ( addr addr [prev^] )
STHr ROT ROT ( addr prev^ addr )
STA INC2 ( addr+1 )
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.buffer/limit STZ2 ( )
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JMP2r
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( TODO: change last/addr order and GTH -> LTH to remove hack )
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@shift-left ( addr* -> )
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;last-pos JSR2 SWP2 ( last addr )
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&loop GTH2k ,&next JCN ( last addr )
,&done JMP ( last addr )
&next DUP2 INC2 LDAk ( last addr addr+1 c1^ )
STH SWP2 STHr ( last addr+1 addr c1^ )
ROT ROT ( last addr+1 c1^ addr )
STA ,&loop JMP ( last addr+1 )
&done POP2 ( last )
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.buffer/limit STZ2 ( )
#00 .buffer/limit LDZ2 STA ( ensure null termination )
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JMP2r
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@cur-col ( -> col* )
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.cursor/col LDZ2 ;cur-len JSR2 ;min2 JMP2
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@cur-w-col ( -> col* )
LIT2r 0000 ( [0] )
;cur-line JSR2 DUP2 ;cur-col JSR2 ADD2 SWP2 ( lim s [0] )
&loop GTH2k ,&next JCN
POP2 POP2 STH2r JMP2r
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&next LDAk #09 EQU ,&tabs JCN INC2 INC2r ,&loop JMP
&tabs INC2 .config/tab-width LDZ2 STH2 ADD2r ,&loop JMP
@cur-rel-row ( -> row* )
( .cursor/row LDZ2 JMP2r )
.cursor/row LDZ2 .buffer/line-offset LDZ2 SUB2 JMP2r
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@set-abs-row ( n* -> )
( .buffer/line-offset LDZ2 SUB2 .cursor/row STZ2 JMP2r )
.cursor/row STZ2 JMP2r
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( @set-rel-row ( n* -> )
.cursor/row STZ2 JMP2r )
@zero-row ( -> )
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;data .buffer/offset STZ2
#0000 .buffer/line-offset STZ2
#0000 .cursor/row STZ2
JMP2r
@inc-row ( -> )
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.cursor/row LDZ2 INC2 .cursor/row STZ2 JMP2r
@dec-row ( -> )
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.cursor/row LDZ2 #0001 SUB2 .cursor/row STZ2 JMP2r
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@last-pos ( -> addr* )
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.buffer/limit LDZ2 #0001 SUB2 JMP2r
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( @more-than-one-screen ( -> bool^ )
.buffer/line-count LDZ2 .term/rows LDZ2 GTH2 JMP2r )
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( @fits-in-one-screen ( -> bool^ )
.buffer/line-count LDZ2 .term/rows LDZ2 INC2 LTH2 JMP2r )
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( @mod-div ( x^ y^ -> x%d x/y )
DIVk STHk MUL SUB STHr JMP2r )
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@mod-div2 ( x^ y^ -> x%d x/y )
DIV2k STH2k MUL2 SUB2 STH2r JMP2r
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( @base-10-width ( n* -> w* )
LIT2r 0000 ( n [0] )
&loop ( n [w] )
DUP2 #0000 EQU2 ,&done JCN ( n [w] )
#000a DIV2 ( n/10 [w] )
INC2r ,&loop JMP ( n/10 [w+1] )
&done ( 0 [w] )
POP2 STH2r JMP2r )
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@emit-digit ( n^ -> )
LIT '0 ADD emit JMP2r
( @emit-dec ( n^ -> )
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DUP #63 GTH ,&do3 JCN
DUP #09 GTH ,&do2 JCN
,&do1 JMP
&do3 #64 ;mod-div JSR2 ;emit-digit JSR2
&do2 #0a ;mod-div JSR2 ;emit-digit JSR2
&do1 ;emit-digit JMP2 )
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@emit-dec2 ( n* -> )
DUP2 #270f GTH2 ,&do5 JCN
DUP2 #03e7 GTH2 ,&do4 JCN
DUP2 #0063 GTH2 ,&do3 JCN
DUP2 #0009 GTH2 ,&do2 JCN
,&do1 JMP
&do5 #2710 ;mod-div2 JSR2 NIP ;emit-digit JSR2
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&do4 #03e8 ;mod-div2 JSR2 NIP ;emit-digit JSR2
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&do3 #0064 ;mod-div2 JSR2 NIP ;emit-digit JSR2
&do2 #000a ;mod-div2 JSR2 NIP ;emit-digit JSR2
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&do1 NIP ;emit-digit JMP2
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@emit-dec2-pad ( n* -> )
LIT2r 2018 ( preload #20 .Console/write into rst )
DUP2 #270f GTH2 ,&do5 JCN DEOkr
DUP2 #03e7 GTH2 ,&do4 JCN DEOkr
DUP2 #0063 GTH2 ,&do3 JCN DEOkr
DUP2 #0009 GTH2 ,&do2 JCN DEOkr
,&do1 JMP
&do5 #2710 ;mod-div2 JSR2 NIP ;emit-digit JSR2
&do4 #03e8 ;mod-div2 JSR2 NIP ;emit-digit JSR2
&do3 #0064 ;mod-div2 JSR2 NIP ;emit-digit JSR2
&do2 #000a ;mod-div2 JSR2 NIP ;emit-digit JSR2
&do1 NIP ;emit-digit JSR2
DEOr JMP2r
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( various string constants used as messages for the user )
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@messages [ &null 00
&input-error "input 20 "error: 20 00
&bytes 20 "bytes, 00
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&save-ok "Successfully 20 "saved 20 00
&save-failed "Failed 20 "to 20 "save 20 00
&lines 20 "lines] 00
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&goto-line "Go 20 "to 20 "line: 20 00
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&save-prompt "File 20 "Name 20 "to 20 "Write: 20 00
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&quit-prompt "Save 20 "modified 20 "file 20 "(y/n)? 20 00
&unknown-input "Unknown 20 "input: 20 00
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&saved "-- 20 00
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&unsaved "** 20 00
&term-size-parse-error "error 20 "parsing 20 "term 20 "size 00
&rel-line-error "invalid 20 "relative 20 "line 20 "number 00
&st-tabs "[t] 00
&st-spaces "[s] 00
]
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@filename $80 ( path to file being edited )
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@data $f000 ( actual file data to be edited )