A2osX/SBIN/SHELL.S.txt

NEW
PREFIX /A2OSX.BUILD
AUTO 4,1
				.LIST OFF
				.OP	65C02
				.OR	$2000
				.TF SBIN/SHELL
*--------------------------------------
CSH				.EQ 0
*--------------------------------------
C.STARTPROC		.EQ 0
C.CD			.EQ 2
C.DATE			.EQ 4
C.ECHO			.EQ 6
C.EXIT			.EQ 8
C.IF			.EQ 10
C.MD			.EQ 12
C.PAUSE			.EQ 14
C.PWD			.EQ 16
C.RD			.EQ 18
C.READ			.EQ 20
C.SET			.EQ 22
C.SLEEP			.EQ 24
C.TIME			.EQ 26
*--------------------------------------
C.ELSE			.EQ 28
C.FI			.EQ 30
*--------------------------------------
				.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
ZPFileBufPtr	.EQ ZPBIN+10
				.DO CSH=1
ZPCSHSymbols	.EQ ZPBIN+12
ZPCSHData		.EQ ZPBIN+14
ZPCSHValue		.EQ ZPBIN+16
ZPCSHStack		.EQ ZPBIN+18
				.FIN
*--------------------------------------
CmdLine.MAX		.EQ 127
VarLen.MAX		.EQ 15
History.MAX		.EQ 256
CMD.IF.STACK.MAX	.EQ 4
*--------------------------------------
*			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
				.DO CSH=1
				.DA #20					ZP
				.ELSE
				.DA #12					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.TRACE		.DA MSG.TRACE
L.MSG.ECHOCRLF	.DA MSG.ECHOCRLF
L.MSG.BATCHERR	.DA MSG.BATCHERR
L.MSG.ERROR		.DA MSG.ERROR
L.MSG.PRINTENV	.DA MSG.PRINTENV
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.CL.IO			.DA CL.IO
J.CL.IO			.DA CL.IO.AMP
				.DA CL.IO.PIPE
				.DA CL.IO.IN
				.DA CL.IO.OUTA
				.DA CL.IO.OUT
				.DA CL.IO.1OUTA
				.DA CL.IO.1OUT
				.DA CL.IO.2OUTA
				.DA CL.IO.2OUT
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.MD
				.DA Cmd.INT.PAUSE
				.DA Cmd.INT.PWD
				.DA Cmd.INT.RD
				.DA Cmd.INT.READ
				.DA Cmd.INT.SET
				.DA Cmd.INT.SLEEP
				.DA Cmd.INT.TIME
				.DA Cmd.INT.ELSE
				.DA Cmd.INT.FI
L.CMD.IF.TOKEN1	.DA CMD.IF.TOKEN1
L.CMD.IF.TOKEN2	.DA CMD.IF.TOKEN2
J.CMD.IF.TOKEN2	.DA CMD.IF.D
				.DA CMD.IF.E
				.DA CMD.IF.F
L.CMD.IF.TOKEN3	.DA CMD.IF.TOKEN3
L.ERR.Codes		.DA ERR.Codes
L.ERR.Messages	.DA ERR.Messages
				.DO CSH=1
				.INB /A2OSX.SRC/SBIN/SHELL.R.CSH
				.FIN
				.DA 0
*--------------------------------------
CS.INIT			clc
CS.INIT.RTS		rts
*--------------------------------------
CS.RUN			jsr SetPWD

				jsr CMD.Init
				bcs CS.INIT.RTS

				lda #1
				>SYSCALL ArgV
				bcs .1					no arg, continue starting interactive
				>SYSCALL LoadTxtFile
				bcs CS.INIT.RTS
				
				txa
				>STA.G hFileBuf
				>SYSCALL GetMemPtr
				>STYA ZPFileBufPtr
				
				.DO CSH=1
				jsr CSH.Init
				.FIN
				bra CS.RUN.LOOP
				
.1				jsr HIS.Init
				bcs CS.INIT.RTS

				>PUSHWI K.VER
				>PUSHBI 2
				>LDYA L.MSG.GREETINGS
				>SYSCALL printf
				bcs CS.INIT.RTS
*--------------------------------------
CS.RUN.LOOP		jsr CL.Reset
				jsr IO.Reset
				
.1				jsr CheckSleep
				beq .3
				
				>SLEEP
				>SYSCALL GetChar
				bcs .2
				
				cmp #3					Ctrl-C
				bne .1
				
				>LDA.G hFileBuf			batch mode ?
				bne .8
				bra .1

.2				tay
				beq .1
				rts						I/O err

.3				>LDA.G bPause
				bpl .6
				
.4				>SLEEP
				>SYSCALL GetChar
				bcc .5					got one
				tay
				beq .4					no char
				rts						I/O err
				
.5				cmp #3					Ctrl-C
				bne .60
				
				>LDA.G hFileBuf			batch mode ?
				bne .8
				
.60				cmp #C.CR
				bne .4
				
				>STZ.G bPause

.6				>LDA.G bReadMode		READ Command ?
				bne .7
				
				>LDA.G hFileBuf			batch mode ?
				beq CS.RUN.INTERCATIVE
				jmp CS.RUN.BATCH
.7				jmp CS.RUN.READ

.8				lda #3					User Interrupt
.9				sec
				rts
*--------------------------------------
CS.RUN.INTERCATIVE
				>STZ.G bSecureRead		Clear password mode

				jsr CL.PrintPrompt
				bcs .9

.1				>SLEEP
				>SYSCALL GetChar
				bcc .2

				tay
				beq .1					no char

.9				rts						I/O error 
				
.2				cmp #C.EOF				....or Ctrl-D
				beq .9					CS

				jsr CL.CHARIN

				>LDA.G CL.bExec			Something to execute ?
				bpl .1
				
				lda (ZPCMDBuf)
				beq .8					Empty line

				jsr HIS.Add

				jmp CS.RUN.Exec
.8				jmp CS.RUN.LOOP				
*--------------------------------------
CS.RUN.READ
.1				>SLEEP
				>SYSCALL GetChar
				bcs .1					no char

				jsr CL.CHARIN

				>LDA.G CL.bExec
				bpl .1

				>STZ.G bReadMode

				lda (ZPCMDBuf)
				beq .8
				
				>PUSHW ZPCMDBuf

				>LEA.G CMD.VarName
				>SYSCALL SetEnv
				
.8				jmp CS.RUN.LOOP.END
*--------------------------------------
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
				jmp CS.RUN.LOOP.END

.2				.DO CSH=1
				jsr	CSH.Run
				.ELSE
				jsr CL.GetLine
				.FIN
				bcc .7
				
				cmp #C.EOF
				bne .3

				lda #$ff
				>STA.G bExit
				inc
				clc
				bra CS.RUN.LOOP.END
				
.3				sec
				bra CS.RUN.LOOP.END

.7				>LDA.G CL.bExec
				bpl CS.RUN.LOOP.80

				lda (ZPCMDBuf)
				beq CS.RUN.LOOP.80

				jsr CL.Trace
*--------------------------------------
CS.RUN.Exec		jsr CL.Parse
				bcs CS.RUN.LOOP.END
				
				lda (ZPArgVBuf)
				beq CS.RUN.LOOP.8
				jsr CMD.Exec
				>SLEEP					if S.PS.HOLD
*--------------------------------------
CS.RUN.LOOP.END	ldy #S.PS.RC
				sta (pPs),y
				
				bcc CS.RUN.LOOP.8

				>LDA.G hFileBuf			batch mode ?
				beq .1
				
				jsr IO.PrintBatchErrMsg
				bcs CS.RUN.LOOP.RTS
				
.1				ldy #S.PS.RC
				lda (pPs),y
				
				jsr IO.PrintErrMsg
				bcs CS.RUN.LOOP.RTS

CS.RUN.LOOP.8	>LDA.G bExit
				beq CS.RUN.LOOP.80
				
				lda #0
				sec
CS.RUN.LOOP.RTS	rts
				
CS.RUN.LOOP.80	jmp CS.RUN.LOOP
*--------------------------------------
CS.DOEVENT		lda (pEvent)
				bpl .9

				jsr CheckSleep
				beq .9

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

.9				sec
				rts
*--------------------------------------
CS.QUIT			.DO CSH=1
				jsr CSH.Quit
				.FIN
				jsr HIS.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
SetPWD.I		>SYSCALL GetMemPtr
				>PUSHYA
				>LDYA L.ENV.PWD
				>SYSCALL SetEnv
				rts
*--------------------------------------
Lookup			>STYA ZPPtr2
				>PULLW ZPPtr1

				ldx #0
				
.1				phx
				
				>PUSHW ZPPtr2
				>LDYA ZPPtr1
				>SYSCALL StrCaseCmp
				bcs .2
				
				plx
				>LDYA ZPPtr2
				clc
				rts
				
.2				inc ZPPtr2
				bne .3
				inc ZPPtr2+1

.3				lda (ZPPtr2)
				bne .2
				
				inc ZPPtr2
				bne .4
				inc ZPPtr2+1
								
.4				plx
				inx
				inx
				
				lda (ZPPtr2)			Array Ending 0, must be an external Cmd....
				bne .1
				
				sec
				rts
*--------------------------------------
				.INB /A2OSX.SRC/SBIN/SHELL.S.CL
				.INB /A2OSX.SRC/SBIN/SHELL.S.CMD
				.INB /A2OSX.SRC/SBIN/SHELL.S.IO
				.INB /A2OSX.SRC/SBIN/SHELL.S.HIS
				.DO CSH=1
				.INB /A2OSX.SRC/SBIN/SHELL.S.CSH
				.FIN
*--------------------------------------
CS.END
*--------------------------------------
MSG.GREETINGS	.AZ "\r\nA2osX-Shell %d.%d\r\n\r\n"
MSG.PROMPT		.AZ "\e[7h$ "
MSG.TRACE		.AS ">%s"
MSG.ECHOCRLF	.AZ "\r\n"
MSG.BATCHERR	.AZ "^\r\nLine #%D:"
MSG.ERROR		.AZ "[$%h]:%S.\r\n"
MSG.PRINTENV	.AZ "%s=%s\r\n"
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
*--------------------------------------
CL.IO			.AZ "&"
				.AZ "|"
				.AZ "<"
				.AZ ">>"
				.AZ ">"
				.AZ "1>>"
				.AZ "1>"
				.AZ "2>>"
				.AZ "2>"
				.HS 00
*--------------------------------------
CMD.INT			.AZ "STARTPROC"
				.AZ "CD"
				.AZ "DATE"
				.AZ "ECHO"
				.AZ "EXIT"
				.AZ "IF"
				.AZ "MD"
				.AZ "PAUSE"
				.AZ "PWD"
				.AZ "RD"
				.AZ "READ"
				.AZ "SET"
				.AZ "SLEEP"
				.AZ "TIME"
				.AZ "ELSE"
				.AZ "FI"
				.HS 00
*--------------------------------------
CMD.IF.TOKEN1	.AZ "["
				.AZ "!["
				.HS 00
CMD.IF.TOKEN2	.AZ "-d"
				.AZ "-e"
				.AZ "-f"
				.HS 00
CMD.IF.TOKEN3	.AZ "-eq"
				.AZ "-ne"
				.HS 00				
*--------------------------------------
				.DO CSH=1
				.INB /A2OSX.SRC/SBIN/SHELL.C.CSH
				.FIN
				.INB /A2OSX.SRC/X.ERRORS.S
*--------------------------------------
EscChars		.AS 'DBAC'
EscChars.Cnt	.EQ *-EscChars
*--------------------------------------
				.DUMMY
				.OR 0
DS.START
hFileBuf		.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

CL.Ptr			.BS 1
CL.Len			.BS 1
CL.bExec		.BS 1

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.IF.PTR		.BS 1
CMD.IF.STACK	.BS CMD.IF.STACK.MAX

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

IO.hIn			.BS 1
IO.hOut			.BS 1
IO.hErr			.BS 1
				.DO CSH=1
				.INB /A2OSX.SRC/SBIN/SHELL.G.CSH
				.FIN
DS.END			.ED
*--------------------------------------
MAN
SAVE /A2OSX.SRC/SBIN/SHELL.S
ASM