NEW
PREFIX /A2OSX.BUILD
AUTO 4,1
				.LIST OFF	
*--------------------------------------
CMD.Init		>LDYAI CmdLine.MAX+1
				>SYSCALL GetMem
				bcs .9
				>STYA ZPCMDBuf
				txa
				>STA.G hCmdBuf
.9				rts				
*--------------------------------------
CMD.Quit		>LDA.G hCmdBuf
				beq .9
				>SYSCALL FreeMem
.9				rts	
*--------------------------------------
* in:
* ZPCMDBuf : CString command line
* out:
* ZPCMDBuf : Remove extra SPACE & comment
* ZPCMDBuf : cmd\0 arg1\0 arg2\0 ... \0
*--------------------------------------
Cmd.Parse		>LDYA ZPCMDBuf
				>SYSCALL ExpandStr
				bcs .99
				
				phx						save expanded string
				pha
				>PUSHW ZPCMDBuf
				pla
				>SYSCALL Args2ArgV
				plx
				>SYSCALL FreeMem
				
.99				rts
*--------------------------------------
* ZPCMDBuf-> argv[] (formatted & not empty)
*--------------------------------------
CMD.Exec		lda #S.PS.F.HOLD+S.PS.F.DUPENV
				>STA.G CMD.PSFlags

				>LDYA L.CMD.INT
				>STYA ZPPtr2

				ldx #0
				
.1				phx
				
				>PUSHW ZPPtr2
				>LDYA ZPCMDBuf
				>SYSCALL StrCaseCmp
				bcs .2
				
				ldx #0
				jsr Cmd.RemoveStrAtX	Remove CMD...
				
				plx
				jmp (J.CMD.INT,x)		Found an internal Cmd...
				
.2				jsr Cmd.NextStrPtr2
				>STYA ZPPtr2
				plx
				inx
				inx
				
				lda (ZPPtr2)			Array Ending 0, must be an external Cmd....
				bne .1
*--------------------------------------
Cmd.Exec.EXT	ldy #0

.10				lda (ZPCMDBuf),y
				beq .1					no / found, search...
				cmp #'/'
				beq .11					found /, some path specified, no search
				iny
				bra .10
				
.11				>LDYA ZPCMDBuf
				>SYSCALL realpath
				bcs .99

				phy
				pha
				txa
				>STA.G CMD.hCmdLine
				pla
				ply
				>PUSHEA.G CMD.Stat		Command line is already full path, no search
				>LDYA ZPCMDBuf
				>SYSCALL STAT
				bcs .99
				
.1				>LDYAI 256				Get a buffer for found path
				>SYSCALL GetMem
				bcs .99
				txa
				>STA.G CMD.hCmdLine
				
				>LDYA L.ENV.PATH		push ENVNAME=PATH for search
				>SYSCALL GetEnv			get value for ENV=PATH
				bcs .99					No PATH, try in CD

				jsr Cmd.Exec.EXT.Search
				bcc .2

				ldy #S.PS.hPREFIX		not found, try in CD
				lda (pPs),y
				>SYSCALL GetMemPtr
				jsr Cmd.Exec.EXT.Search
				bcc .2
				
				pha
				>LDA.G CMD.hCmdLine
				>SYSCALL FreeMem
				pla
				
				sec
.99				rts
				
* CMD.hCmdLine = /path/bin

.2				ldx #0
				jsr Cmd.RemoveStrAtX
	
				>LDYA ZPCMDBuf
				>SYSCALL puts
				>DEBUG

				>LDA.G CMD.hCmdLine
				>SYSCALL GetMemPtr
				ldx #0
				jsr CMD.InsertStrYAAtX
				
				>LDYA ZPCMDBuf
				>SYSCALL puts
				>DEBUG

				>LDA.G CMD.hCmdLine
				>SYSCALL FreeMem
	
				ldy #CMD.Stat+S.STAT.P.TYPE
				lda (pData),y
				cmp #S.FI.T.TXT
				beq Cmd.Exec.EXT.TXT
				cmp #S.FI.T.BIN
				beq Cmd.Exec.EXT.BIN
				cmp #S.FI.T.SYS
				bne .9
				
				bra *
				
.9				lda #K.E.SYN
				sec	
				rts
*--------------------------------------
Cmd.Exec.EXT.Search
				pha
				phy
				>PUSHEA.G CMD.Stat
				>LDA.G CMD.hCmdLine
				>SYSCALL GetMemPtr
				>PUSHYA					push dest full path
				ply
				pla
				>PUSHYA					push search list
				>LDYA ZPCMDBuf			push CMD
				>SYSCALL FileSearch
				rts
*--------------------------------------
* TXT : Launch "/PATH/SHELL /PATH/CMD ARGS"
*--------------------------------------
Cmd.Exec.EXT.TXT
				lda #0
				>SYSCALL ArgV
				ldx #0
				jsr Cmd.InsertStrYAAtX
*--------------------------------------
* BIN : Launch "/PATH/CMD ARGS"
*--------------------------------------
Cmd.Exec.EXT.BIN
				>PUSHB.G CMD.PSFlags
				>LDYA ZPCMDBuf
				>SYSCALL Exec
				rts
*--------------------------------------
* Internal Commands
*--------------------------------------
Cmd.INT.PWD		ldy #S.PS.hPREFIX
				lda (pPs),y
				>SYSCALL GetMemPtr
				>SYSCALL puts
				rts
*--------------------------------------			
Cmd.INT.CD		lda (ZPCMDBuf)
				bne .1

				>LDYA L.ENV.HOME
				>SYSCALL GetEnv
				bcs Cmd.INT.PWD
				
				>SYSCALL ExpandStr
				bcs .9
				
				bra .4
				
.1				ldy #0

.2				lda (ZPCMDBuf),y
				tax
				iny
				lda (ZPCMDBuf),y
				bne .2
				cpx #'/'
				beq .3
				
				lda #'/'
				sta (ZPCMDBuf),y
				iny
				lda #0
				sta (ZPCMDBuf),y

.3				>LDYA ZPCMDBuf			Get ARG0
				>SYSCALL RealPath
				bcs .9
				
.4				>STYA ZPCMDBuf
				txa
				>STA.G CMD.hCmdLine
				
				ldy #1
				lda (ZPCMDBuf),y
				beq .8					we have '/'
				
				>PUSHEA.G CMD.Stat
				>LDYA ZPPTR2
				>SYSCALL STAT
				bcs .9

				ldy #CMD.Stat+S.STAT.P.TYPE
				lda (pData),y
				cmp #$0F				Directory ?
				bne Cmd.Exec.ERRSYN
				
.8				>LDYA ZPCMDBuf
				>SYSCALL NewStr
				bcs .9
				phx
				
				ldy #S.PS.hPREFIX
				lda (pPs),y
				>SYSCALL FreeMem
				
				pla
				
				ldy #S.PS.hPREFIX
				sta (pPs),y
				jsr SetPWD
				clc
.9				rts
*--------------------------------------
Cmd.Exec.ERRSYN	lda #K.E.SYN
				sec
				rts
*--------------------------------------
Cmd.INT.STARTPROC
				lda (ZPCMDBuf)
				beq Cmd.Exec.ERRSYN
				
				>LDA.G CMD.PSFlags
				and #$ff^S.PS.F.HOLD
				sta (pData),y
				
				jmp Cmd.Exec.EXT
*--------------------------------------
Cmd.INT.SET		lda (ZPCMDBuf)
				bne Cmd.INT.SETVAR

* No arg, print all ENV

				ldy #S.PS.hENV
				lda (pPs),y
				>SYSCALL GetMemPtr
				>STYA ZPPTR1

.1				lda (ZPPTR1)
				beq .8					Ending 0 ?

				ldy #$ff

.2				iny
				lda (ZPPTR1),y
				bne .2

				tya
				sec
				adc ZPPTR1
				sta ZPPTR2
				lda #0
				adc ZPPTR1+1
				sta ZPPTR2+1
				
				>PUSHW ZPPTR2			Push value
				>PUSHW ZPPTR1			Push name
				jsr Cmd.INT.SET.PRINT

				bcs .9

				ldy #$ff
				
.3				iny
				lda (ZPPTR2),y
				bne .3
				
				tya
				sec
				adc ZPPTR2
				sta ZPPTR1
				lda #0
				adc ZPPTR2+1
				sta ZPPTR1+1
				bra .1
				
.8				clc
.9				rts
*--------------------------------------
Cmd.INT.SETVAR	cmp #'='				string is '=value' ?
				beq .99					syntax error
				
				ldy #0

.1				iny
				lda (ZPCMDBuf),y
				beq .3					no =, GetEnv
				
				cmp #'='				ARGS contains =, PutEnv
				bne .1
				
				iny
				lda (ZPCMDBuf),y
				beq .2					"VAR=" go UnsetEnv
				
				>LDYA ZPCMDBuf			String is VAR=VALUE...	
				>SYSCALL PutEnv
				rts
				
.2				dey						String is "VAR=", Remove ending '='
				lda #0
				sta (ZPCMDBuf),y
				
				>LDYA ZPCMDBuf			String is "VAR"...	
				>SYSCALL UnsetEnv
				rts

* Print requested VAR
				
.3				>LDYA ZPCMDBuf
				>SYSCALL GetEnv
				bcs .8
				
				>PUSHYA					push value
				>PUSHW ZPCMDBuf			push name
				jsr Cmd.INT.SET.PRINT
				
.8				clc
.9				rts

.99				jmp Cmd.Exec.ERRSYN
*--------------------------------------
Cmd.INT.SET.PRINT
				>PUSHBI 4
				>LDYA L.MSG.PRINTENV
				>SYSCALL printf
				rts
*--------------------------------------
Cmd.INT.DATE	sec
				.HS 90					bcc
Cmd.INT.TIME	clc
				php
				>LEA.G CMD.Time
				>SYSCALL Time

				>PUSHEA.G CMD.Time
				
				plp
				bcc .1
				>PUSHW L.FMT.DATE
				bra .2
.1				>PUSHW L.FMT.TIME

.2				>LDYA ZPCMDBuf
				>SYSCALL StrFTime
				
				>LDYA ZPCMDBuf
				>SYSCALL puts
				rts
*--------------------------------------
Cmd.INT.ECHO	>PUSHW ZPCMDBuf
				ldy #S.PS.hStdOut
				lda (pPs),y
				>SYSCALL fputs
				bcs .9
				
				ldx #1

.1				phx
				jsr Cmd.GetStrAtX
				bcs .7
				>PUSHYA
				
				lda #C.SPACE
				>SYSCALL putchar

				ldy #S.PS.hStdOut
				lda (pPs),y
				>SYSCALL fputs				
				plx
				inx
				bcc .1

				rts
				
.7				plx
				>LDA.G bECHO.N
				bmi .8
				
				>PUSHBI 0
				>LDYA L.MSG.ECHOCRLF
				>SYSCALL printf
				rts

.8				clc
.9				rts
*--------------------------------------
Cmd.INT.READ	lda (ZPCMDBuf)
				beq .9 

				lda #0
				>STA.G bSecureRead
				>STA.G CMD.VarName.LEN
				
				lda pData
				clc
				adc #CMD.VarName
				sta ZPPTR1
				lda pData+1
				adc #0
				sta ZPPTR1+1
				
.1				lda (ZPPtr2)
				beq .8

				cmp #' '
				bne .11
				jsr Cmd.NextCharPtr2
				bra .1
				
.11				cmp #'-'
				bne .7
				
				jsr Cmd.NextCharPtr2
				beq .9

				cmp #'S'
				bne .2
				
				lda #$80
				>STA.G bSecureRead
				
				jsr Cmd.NextCharPtr2
				beq .8
				cmp #' '
				bne .9
				
				bra .1
				
.2				cmp #'P'			
				bne .9
				
				jsr Cmd.NextCharPtr2
				beq .9

				cmp #' '
				bne .9
				
				jsr Cmd.NextCharPtr2
				beq .9

				cmp #'"'
				bne .9
				
.3				jsr Cmd.NextCharPtr2
				beq .9

				cmp #'"'
				beq .1
				
				>SYSCALL PutChar
				bcs .99
				bra .3
				
.9				jmp Cmd.Exec.ERRSYN			
				
.7				>LDA.G CMD.VarName.LEN
				cmp #VarLen.MAX
				beq .9
				pha
				
				inc
				sta (pData),y
				
				ply
				lda (ZPPtr2)
				sta (ZPPTR1),y
				iny
				lda #0
				sta (ZPPTR1),y
				
				jsr Cmd.NextCharPtr2
				beq .1
				cmp #' '
				beq .1
				
				bra .7
				
.8				>LDA.G CMD.VarName.LEN	No var name ? SYNERR
				beq .9
				
				lda #$ff
				>STA.G bReadMode
				
				clc
.99				rts
*--------------------------------------
Cmd.INT.SLEEP	lda (ZPCMDBuf)
				beq .9

				>LDYA ZPCMDBuf
				>SYSCALL AToL
				bcs .9

				>PULLL.G Sleep
				clc
				rts
				
.9				jmp Cmd.Exec.ERRSYN				
*--------------------------------------
Cmd.INT.PAUSE	lda #$FF
				>STA.G bPause
				clc
				rts
*--------------------------------------
Cmd.INT.EXIT	lda #$FF
				>STA.G bExit
				clc
				rts
*--------------------------------------
Cmd.INT.IF		>STZ.G CMD.IFNOT

				lda (ZPCMDBuf)
				beq .9

				cmp #'!'
				bne .1
				
				lda #$ff
				sta (pData),y			Y = #CMD.IFNOT
				
				jsr Cmd.NextCharPtr2NB
				beq .9
				
				cmp #'('
				bne .9
				
				jsr Cmd.NextCharPtr2NB
				beq .9
				
				cmp #'-'				-d -e -f
				bne .1
				
				jsr Cmd.NextCharPtr2NB
				beq .9
				
				
				
.1				>DEBUG





				>LDYA ZPCMDBuf
				>SYSCALL puts

				rts
				
.9				jmp Cmd.Exec.ERRSYN	
*--------------------------------------
Cmd.InsertStrYAAtX
				>STYA ZPPtr3			new string to insert
				
				jsr Cmd.GetStrAtX
				bcs .9
				
				>STYA ZPPtr4			Save Arg[x] ptr
				
				>LDYA ZPPtr3
				>SYSCALL strlen
				pha
				tya
				sec						+1
				adc ZPPtr1
				sta ZPPtr2
				
				pla
				adc ZPPtr1+1
				lda ZPPtr2+1
				
				ldy #0
				
.3				lda (ZPPtr1),y
				sta (ZPPtr2),y
				beq .4
				iny
				bne .3
				
.4				tay
				beq .5
				
				jsr Cmd.NextStrPtr1
				>STYA ZPPtr1
				jsr Cmd.NextStrPtr2
				>STYA ZPPtr2
				bra .3
				
.5				ldy #0

.6				lda (ZPPtr3),y
				sta (ZPPtr4),y
				beq .8
				iny
				bne .6

.8				clc
.9				rts
*--------------------------------------
Cmd.RemoveStrAtX
				jsr Cmd.GetStrAtX
				bcs .9
				
				jsr Cmd.NextStrPtr1
				>STYA ZPPtr2				

.3				ldy #0
				
.4				lda (ZPPtr2),y
				sta (ZPPtr1),y
				beq .5
				iny
				bra .4
				
.5				tya						we moved the ending \0
				beq .8
				
				sec
				adc ZPPtr2
				sta ZPPtr2
				bcc .6
				
				inc ZPPtr2+1
				
.6				tya
			
				sec
				adc ZPPtr1
				sta ZPPtr1
				bcc .3
				
				inc ZPPtr2+1
				bra .3
				
.8				rts
*--------------------------------------
Cmd.GetStrAtX	>LDYA ZPCMDBuf
				
.1				dex
				bmi .8
				
				>STYA ZPPtr1
				
				jsr Cmd.NextStrPtr1
				bcc .1
				rts
				
.8				>LDYA ZPPtr1

				clc
				rts
*--------------------------------------
Cmd.NextStrPtr1	lda (ZPPtr1)
				beq .9

.1				inc ZPPtr1
				bne .2
				inc ZPPtr1+1
.2				lda (ZPPtr1)
				bne .1
				
				inc ZPPtr1
				bne .8
				inc ZPPtr1+1

.8				clc
				rts
				
.9				sec
				rts
*--------------------------------------
Cmd.NextStrPtr2	lda (ZPPtr2)
				beq .9
				
				>LDYA ZPPtr2
				>SYSCALL strlen
				pha
				tya
				sec						+1
				adc ZPPtr2
				tay
				
				pla
				adc ZPPtr2+1
*				clc
				rts
				
.9				sec
				rts
*--------------------------------------
Cmd.NextCharPtr2NB
.1				jsr Cmd.NextCharPtr2
				beq .9
				cmp #C.SPACE
				beq .1
				
.9				rts				
*--------------------------------------
Cmd.NextCharPtr2
				inc ZPPtr2
				bne .1
				inc ZPPtr2+1
.1				lda (ZPPtr2)
				rts				
*--------------------------------------
MAN
SAVE /A2OSX.SRC/SBIN/SHELL.S.CMD
LOAD /A2OSX.SRC/SBIN/SHELL.S
ASM