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
				
				>STYA ZPPtr1			Ptr to expanded CMD ARGS\0
				
				txa
				>STA.G CMD.hCmdLine
				
*				SET +X				
				>LDYA ZPPtr1
				>SYSCALL puts
				bcs .90
				
				ldy #0

				lda (ZPPtr1)			empty line...quit
				beq .9
				
.1				jsr Cmd.NextCharPtr1
				beq .8					no more char, exit
				
				cmp #' '				skip leading spaces
				beq .1
				
				cmp #'#'				Comment ?
				beq .8					ignore remaining chars
				
.3				sta (ZPCMDBuf),y		add char to buffer
				iny
				
				jsr Cmd.NextCharPtr1
				beq .8
				
				cmp #' '
				bne .3
				
				lda #0
				sta (ZPCMDBuf),y		add \0 to buffer
				iny
				
.5				jsr Cmd.NextCharPtr1
				beq .8
				
				cmp #' '
				beq .5					skip additional spaces
				bne .3					no more space, add next word...
				
.8				lda #0
				sta (ZPCMDBuf),y
				
.9				tya
				>STA.G CmdBuflen
				
.90				>LDA.G CMD.hCmdLine
				>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
				
				lda (ZPPtr2)
				beq Cmd.Exec.EXT		Array Ending 0, must be an external Cmd....

				plx
				inx
				inx
				bra .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
				bcc .2
				rts
				
.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
	
				>LDA.G CMD.hCmdLine
				>SYSCALL GetMemPtr
				ldx #0
				jsr CMD.InsertStrYAAtX
				
				>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 GetArg
				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	>LDYA ZPCMDBuf
				>SYSCALL puts
				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
				
				>LDYA ZPCMDBuf
				>STYA ZPPtr1
				
.1				dex
				bmi .2
				
				jsr Cmd.NextStrPtr1
				>STYA ZPPtr1
				bra .1
				
.2				>LDYA ZPPtr1
				>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				rts
*--------------------------------------
Cmd.RemoveStrAtX
				>LDYA ZPCMDBuf
				>STYA ZPPtr1
				
.1				dex
				bmi .2
				
				jsr Cmd.NextStrPtr1
				>STYA ZPPtr1
				bra .1
				
.2				jsr Cmd.NextStrPtr1
				>STYA ZPPtr2				

				ldy #0
				
.3				lda (ZPPtr2),y
				sta (ZPPtr1),y
				beq .4
				iny
				bra .3
				
.4				tay						we moved the ending \0
				beq .8
				
				jsr Cmd.NextStrPtr2
				>STYA ZPPtr2

				jsr Cmd.NextStrPtr1
				>STYA ZPPtr1
				bra .1
				
.8				rts
*--------------------------------------
Cmd.NextStrPtr1	>LDYA ZPPtr1
				>SYSCALL strlen
				pha
				tya
				sec						+1
				adc ZPPtr1
				tay
				
				pla
				adc ZPPtr1+1
				rts
*--------------------------------------
Cmd.NextStrPtr2	>LDYA ZPPtr2
				>SYSCALL strlen
				pha
				tya
				sec						+1
				adc ZPPtr2
				tay
				
				pla
				adc ZPPtr2+1
				rts
*--------------------------------------
Cmd.NextCharPtr1
				lda (ZPPtr1)
				beq .8
				
				inc ZPPtr1
				bne .8
				inc ZPPtr1+1			never Z
.8				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