A2osX/SBIN/SHELL.S.txt

NEW
PREFIX /A2OSX.BUILD
AUTO 4,1
				.LIST OFF
				.OP	65C02
				.OR	$2000
				.TF SBIN/SHELL
*--------------------------------------
				.INB INC/MACROS.I
				.INB INC/A2OSX.I
				.INB INC/MLI.I
				.INB INC/MLI.E.I
*--------------------------------------
ZPPtr1			.EQ ZPBIN
ZPPtr2			.EQ ZPBIN+2
ZPPtr3			.EQ ZPBIN+4
ZPCMDBuf		.EQ ZPBIN+6
ZPArgVBuf		.EQ ZPBIN+8
ZPCSHBufPtr		.EQ ZPBIN+10
ZPCSHSymbols	.EQ ZPBIN+12
ZPCSHData		.EQ ZPBIN+14
ZPCSHValue		.EQ ZPBIN+16
ZPCSHStack		.EQ ZPBIN+18
*--------------------------------------
CmdLine.MAX		.EQ 127
VarLen.MAX		.EQ 15
History.MAX		.EQ 256
*--------------------------------------
*			File Header (16 Bytes)
*--------------------------------------
CS.START		cld
				jmp (.1,x)
				.DA #$61				6502,Level 1 (65c02)
				.DA #1					BIN Layout Version 1
				.DA #S.PS.F.EVENT		S.PS.F
				.DA #0
				.DA CS.END-CS.START		CS
				.DA DS.END-DS.START		DS
				.DA #64					SS
				.DA #20					ZP
				.DA 0
*--------------------------------------
* Relocation Table
*--------------------------------------
.1				.DA CS.INIT
				.DA CS.RUN
				.DA CS.DOEVENT
				.DA	CS.QUIT
*--------------------------------------
L.MSG.GREETINGS	.DA MSG.GREETINGS
L.MSG.PROMPT	.DA MSG.PROMPT
L.MSG.ECHO		.DA MSG.ECHO
L.MSG.ECHOCRLF	.DA MSG.ECHOCRLF
L.MSG.ERROR		.DA MSG.ERROR
L.MSG.PRINTENV	.DA MSG.PRINTENV
L.MSG.CSHERR	.DA MSG.CSHERR
L.ENV.PATH		.DA ENV.PATH
L.ENV.PWD		.DA ENV.PWD
L.ENV.PS1		.DA ENV.PS1
L.ENV.HOME		.DA ENV.HOME
L.FMT.DATE		.DA FMT.DATE
L.FMT.TIME		.DA FMT.TIME
J.ESC			.DA CL.BS			left arrow
				.DA HIS.GetNext			
				.DA HIS.GetPrev
				.DA CL.NAK			right arow
L.CMD.INT		.DA CMD.INT
J.CMD.INT		.DA Cmd.INT.STARTPROC
				.DA Cmd.INT.CD
				.DA Cmd.INT.DATE
				.DA Cmd.INT.ECHO
				.DA Cmd.INT.EXIT
				.DA Cmd.INT.IF
				.DA Cmd.INT.PAUSE
				.DA Cmd.INT.PWD
				.DA Cmd.INT.READ
				.DA Cmd.INT.SET
				.DA Cmd.INT.SLEEP
				.DA Cmd.INT.TIME
L.CMD.IO		.DA CMD.IO
J.CMD.IO		.DA CMD.IO.AMP
				.DA CMD.IO.PIPE
				.DA CMD.IO.IN
				.DA CMD.IO.OUTA
				.DA CMD.IO.OUT
				.DA CMD.IO.1OUTA
				.DA CMD.IO.1OUT
				.DA CMD.IO.2OUTA
				.DA CMD.IO.2OUT
L.CSH.BOPS		.DA CSH.BOPS
J.CSH.BOPS		.DA CSH.BOPS.ADD
				.DA CSH.BOPS.SUB
				.DA CSH.BOPS.MUL
				.DA CSH.BOPS.DIV
				.DA CSH.BOPS.MOD
				.DA CSH.BOPS.SHL
				.DA CSH.BOPS.SHR
				.DA CSH.BOPS.L
				.DA CSH.BOPS.G
				.DA CSH.BOPS.LE
				.DA CSH.BOPS.GE
				.DA CSH.BOPS.EQ
				.DA CSH.BOPS.NE
				.DA CSH.BOPS.AND
				.DA CSH.BOPS.OR
				.DA CSH.BOPS.EOR
				.DA CSH.BOPS.LAND
				.DA CSH.BOPS.LOR
L.CSH.FN		.DA CSH.FN
L.CSH.KW		.DA CSH.KW
L.CSH.STYPES	.DA CSH.STYPES
J.CSH.KW		.DA CSH.IF
				.DA CSH.WHILE
				.DA CSH.ELSE
				.DA CSH.DO
				.DA CSH.FOR
				.DA CSH.SWITCH
				.DA CSH.CASE
				.DA CSH.BREAK
				.DA CSH.CONTINUE
				.DA CSH.FLOAT
				.DA CSH.SIGNED
				.DA CSH.UNSIGNED
J.CSH.STYPES	.DA CSH.CHAR
				.DA CSH.INT
				.DA CSH.LONG
J.CSH.UTYPES	.DA CSH.UCHAR
				.DA CSH.UINT
				.DA CSH.ULONG
J.CSH.KW.START	.DA CSH.IF.START
				.DA CSH.WHILE.START
J.CSH.KW.END	.DA CSH.IF.END
				.DA CSH.WHILE.END
L.ERR.Codes		.DA ERR.Codes
L.ERR.Messages	.DA ERR.Messages
				.DA 0
*--------------------------------------
CS.INIT			jsr SetPWD

				jsr CMD.Init
				bcs .9

				ldy #S.PS.ARGC
				lda (pPs),y
				cmp #1
				
				beq .1					no arg, continue starting interactive

				jmp CSH.Init

.1				jsr HIS.Init
				bcs .9

				>PUSHWI K.VER
				>PUSHBI 2
				>LDYA L.MSG.GREETINGS
				>SYSCALL printf

.9				rts
*--------------------------------------
CS.RUN			>LDA.G bReadMode		READ Command ?
				beq .22
				jmp CS.RUN.READ

.22				ldy #S.PS.RC
				lda (pPs),y
				beq .11
				
				jsr IO.PrintErrMsg
				bcs .9
				
.11				>LDA.G bPause
				bpl .13

				>SYSCALL GetChar
				bcs .8

				>STZ.G bPause

.13				jsr CheckSleep
				bne .8

				>LDA.G CSH.hBuf			batch mode ?
				beq .10
				jmp CS.RUN.BATCH
*--------------------------------------
.10				jsr CL.RESET			reset CmdBuf
				jsr IO.Reset

				>STZ.G bSecureRead		Clear password mode

				jsr CL.PrintPrompt
				bcs .9

.1				>SLEEP
				>SYSCALL GetChar
				bcc .21					no char

				tay
				beq .1

				rts
				
.21				cmp #C.EOF
				beq .9

				jsr CL.CHARIN

				>LDA.G bCmdBufExec		Something to execute ?
				bpl .1
				
				lda (ZPCMDBuf)
				beq .10					Empty line

				jsr HIS.Add

				jsr CMD.Parse
				bcs .2
				
				lda (ZPArgVBuf)
				beq .10					Empty line

				jsr CMD.Exec
				bcs .2
				
				lda #0

.2				ldy #S.PS.RC
				sta (pPs),y

				>LDA.G bExit
				bne .80

.8				clc
				rts

.80				lda #0
				sec
.9				rts	
*--------------------------------------
CS.RUN.READ		jsr CL.RESET			reset CmdBuf
				jsr IO.Reset
				
.1				>SLEEP
				>SYSCALL GetChar
				bcs .1					no char

				jsr CL.CHARIN

				>LDA.G bCmdBufExec
				bpl .1

				>STZ.G bReadMode

				lda (ZPCMDBuf)
				beq .8
				
				>PUSHW ZPCMDBuf

				>LEA.G CMD.VarName
				>SYSCALL SetEnv
				rts
				
.8				clc
				rts
*--------------------------------------
CS.RUN.BATCH	>SYSCALL GetChar
				bcs .2
				
				cmp #3					test Ctrl-c
				bne .1

				sec
				rts

.1				cmp #19					test Ctrl-s
				bne .2

				lda #$80
				>STA.G bPause
				clc
				rts

.2				jsr	CSH.Run
				bcc .7
				
				cmp #MLI.E.EOF
				beq .9

				pha

				jsr CSH.ErrorMsg
				
				pla

				ldy #S.PS.RC
				sta (pPs),y
				sec
				rts

.7				>LDA.G bCmdBufExec
				bpl .8					Empty line....nothing to do....

				lda (ZPCMDBuf)
				beq .8

				jsr CMD.Parse
				bcs .8
				
				lda (ZPArgVBuf)
				beq .8

				jsr CMD.Exec
				bcs .8

				lda #0
				
.8				ldy #S.PS.RC
				sta (pPs),y
				clc
				rts
				
.9				lda #0
				sec
				rts
*--------------------------------------
CS.DOEVENT		lda (pEvent)
				bpl .9

				jsr CheckSleep
				beq .9

*				ldy #Sleep				already set by CheckSleep
				clc
				ldx #4
				
.1				lda (pData),y
				sbc #0
				sta (pData),y
				iny
				dex
				bne .1

.9				sec
				rts
*--------------------------------------
CS.QUIT			jsr HIS.Quit
				jsr CSH.Quit
				jsr CMD.Quit
				clc
				rts
*--------------------------------------
CheckSleep		ldy #Sleep+3
				lda (pData),y
				dey
				ora (pData),y
				dey
				ora (pData),y
				dey
				ora (pData),y
				rts
*--------------------------------------
SetPWD			ldy #S.PS.hPREFIX
				lda (pPs),y
				>SYSCALL GetMemPtr
				>PUSHYA
				>LDYA L.ENV.PWD
				>SYSCALL SetEnv
				rts
*--------------------------------------
				.INB /A2OSX.SRC/SBIN/SHELL.S.CL
				.INB /A2OSX.SRC/SBIN/SHELL.S.CMD
				.INB /A2OSX.SRC/SBIN/SHELL.S.CSH
				.INB /A2OSX.SRC/SBIN/SHELL.S.IO
				.INB /A2OSX.SRC/SBIN/SHELL.S.HIS
*--------------------------------------
CS.END
*--------------------------------------
MSG.GREETINGS	.AZ "\r\nA2osX-Shell %d.%d\r\n\r\n"
MSG.PROMPT		.AZ "\e[7h$ "
MSG.ECHO		.AS ">%s"
MSG.ECHOCRLF	.AZ "\r\n"
MSG.ERROR		.AZ "[$%h]:%S.\r\n"
MSG.PRINTENV	.AZ "%s=%s\r\n"
MSG.CSHERR		.AZ "^\r\nLine #%D:"
FMT.DATE		.AZ "%A (%w), %B %d %Y"
FMT.TIME		.AZ "%H:%M:%S (%I:%M:%S%p)"
*--------------------------------------
ENV.PATH		.AZ "PATH"
ENV.PWD			.AZ "PWD"
ENV.PS1			.AZ "PS1"
ENV.HOME		.AZ "HOME"
*--------------------------------------
* https://www.tldp.org/LDP/abs/html/io-redirection.html
*--------------------------------------
CMD.INT			.AZ "STARTPROC"
				.AZ "CD"
				.AZ "DATE"
				.AZ "ECHO"
				.AZ "EXIT"
				.AZ "IF"
				.AZ "PAUSE"
				.AZ "PWD"
				.AZ "READ"
				.AZ "SET"
				.AZ "SLEEP"
				.AZ "TIME"
				.HS 00
*--------------------------------------
CMD.IO			.AZ "&"
				.AZ "|"
				.AZ "<"
				.AZ ">>"
				.AZ ">"
				.AZ "1>>"
				.AZ "1>"
				.AZ "2>>"
				.AZ "2>"
				.HS 00
*--------------------------------------
CMD.IF.Chars	.AS "def"
CMD.IF.Chars.Cnt	.EQ *-CMD.IF.Chars
*--------------------------------------
				.INB /A2OSX.SRC/SBIN/SHELL.C.CSH
				.INB /A2OSX.SRC/X.ERRORS.S
*--------------------------------------
EscChars		.AS 'DBAC'
EscChars.Cnt	.EQ *-EscChars
*--------------------------------------
				.DUMMY
				.OR 0
DS.START
CmdBufPtr		.BS 1
CmdBuflen		.BS 1
bCmdBufexec		.BS 1

bEscMode		.BS 1
bPause			.BS 1
bExit			.BS 1
bSET.X			.BS 1
bECHO.N			.BS 1
bReadMode		.BS 1
bSecureRead		.BS 1

Sleep			.BS 4

CMD.IntCmd		.BS 1
CMD.hCmdLine	.BS 1
CMD.hCmdBuf		.BS 1
CMD.hArgVBuf	.BS 1

CMD.PSFlags		.BS 1
CMD.VarName.LEN	.BS 1
CMD.VarName		.BS VarLen.MAX+1
CMD.Stat		.BS S.STAT
CMD.Time		.BS S.TIME
CMD.IFNOT		.BS 1

HIS.hBuf		.BS 1
HIS.Count		.BS 1
HIS.Index		.BS 1

IO.hIn			.BS 1
IO.hOut			.BS 1
IO.hErr			.BS 1

				.INB /A2OSX.SRC/SBIN/SHELL.G.CSH
				
DS.END			.ED
*--------------------------------------
MAN
SAVE /A2OSX.SRC/SBIN/SHELL.S
ASM