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A2osX/SBIN/SHELL.S.CMD.txt

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PR#3
PREFIX /A2OSX.BUILD
NEW
INC 1
AUTO 6
.LIST OFF
*--------------------------------------
* Remove extra SPACE & comment
*--------------------------------------
Cmd.Normalize >LDYA pData
>STYA ZPPtr1
lda (pData) empty line...quit
beq .9
tax Char count
ldy #0
.1 jsr Cmd.Normalize.Next
beq .8 no more char, exit
cmp #' ' skip leading spaces
beq .1
cmp #'#' Comment ?
beq .8 ignore remaining chars
.3 iny add char to buffer
sta (pData),y
jsr Cmd.Normalize.Next
beq .8
cmp #' '
bne .3
iny add One SPACE to buffer
sta (pData),y
.5 jsr Cmd.Normalize.Next
beq .8
cmp #' '
beq .5 skip additional spaces
bne .3 no more space, add next word...
.8 tya
sta (pData)
.9 rts
Cmd.Normalize.Next
txa
beq .8
dex
inc ZPPtr1
bne .1
inc ZPPtr1+1
.1 lda (ZPPtr1)
.8 rts
*--------------------------------------
* Y,A -> Command line (formatted & not empty)
*--------------------------------------
Cmd.ExecYA stz bStartProc
Cmd.ExecYA.1 >SYSCALL ExpandPStrYA
>STYA ZPPtr1
phx
ldy #1
ldx #0 ARGS len
lda (ZPPtr1),y
.10 sta CMD,y Store Cmd in Buffer
sty CMD update CMD len
tya
cmp (ZPPtr1)
beq .13 end of string
iny
lda (ZPPtr1),y
cmp #' '
bne .10
.12 tya
cmp (ZPPtr1)
beq .13 end of string
iny
lda (ZPPtr1),y
inx
sta ARGS,x
bra .12
.13 stx ARGS update ARGS len
pla
>SYSCALL FreeMemA
>LDYA L.INTCMDS
>STYA ZPPtr2
ldx #0
.1 lda (ZPPtr2)
beq Cmd.Exec.EXT Ending 0, must be an external Cmd....
cmp CMD Same Len ?
bne .4
tay
.2 lda CMD,y
cmp #'a' To Uppercase
bcc .21
cmp #'z'+1
bcs .21
eor #$20
.21 cmp (ZPPtr2),y
bne .4
dey
bne .2
jsr .5 Found an internal Cmd...
bcs .3
lda #0
.3 ldy #S.PS.RC
sta (pPS),y
rts
.5 jmp (J.INTCMDS,x)
.4 inx
inx
lda ZPPtr2
sec
adc (ZPPtr2)
sta ZPPtr2
bcc .1
inc ZPPtr2+1
bra .1
*--------------------------------------
Cmd.Exec.EXT ldy #1
lda CMD,y
cmp #'/' Command line is already full path, no search
beq .3
>LDYA L.ENV.PATH push ENVNAME=PATH for search
>SYSCALL GetEnvYA get value for ENV=PATH
bcs .1 No PATH, try in CD
>PUSHYA push search list
>PUSHW L.CMD
>SYSCALL FileSearch
bcc .2
.1 ldy #S.PS.hPREFIX not found, try in CD
lda (pPs),y
>SYSCALL GetMemPtrA
>PUSHYA push search list
>PUSHW L.CMD
>SYSCALL FileSearch
bcs .99
.2 phx save X=hMem, Y,A = Filename
>PUSHYA
>PUSHW L.CMD replace CMD in TmpBuffer with full path
>SYSCALL PStrCpy
pla
>SYSCALL FreeMemA Discard this string...
.3 stz UsrBuf256 reset UsrBuf256 for final CMDLINE
>PUSHW L.STAT
>PUSHW L.CMD
>SYSCALL STAT
bcs .99
lda STAT+S.STAT.P.TYPE
cmp #$04 TXT File ?
beq Cmd.Exec.EXT.TXT
cmp #$06 BIN File ?
beq Cmd.Exec.EXT.BIN
cmp #$ff SYS File ?
bne .9
bra *
.9 lda #SYSMGR.ERRSYN
sec
.99 rts
*--------------------------------------
* TXT : Launch "/PATH/SHELL /PATH/CMD ARGS"
*--------------------------------------
Cmd.Exec.EXT.TXT
lda #0 Get arg[0] = /PATH/SHELL
>SYSCALL GetArgA
>PUSHYA
>PUSHWI UsrBuf256
>SYSCALL PStrCpy
inc UsrBuf256 Add a space....
ldy UsrBuf256
lda #' '
sta UsrBuf256,y
*--------------------------------------
* BIN : Launch "/PATH/CMD ARGS"
*--------------------------------------
Cmd.Exec.EXT.BIN
>PUSHW L.CMD
>PUSHWI UsrBuf256
>SYSCALL PStrCat
lda ARGS
beq .1
inc UsrBuf256 Add a space....
ldy UsrBuf256
lda #' '
sta UsrBuf256,y
>PUSHW L.ARGS
>PUSHWI UsrBuf256
>SYSCALL PStrCat
.1 >LDYAI UsrBuf256
bit bStartProc
bmi .2 startproc
>SYSCALL ExecProcessNewEnvYA
rts
.2 >SYSCALL CreateProcessYA
rts
*--------------------------------------
* Internal Commands
*--------------------------------------
Cmd.Exec.CD lda ARGS
bne Cmd.Exec.CD1
Cmd.Exec.PWD ldy #S.PS.hPREFIX
lda (pPs),y
>SYSCALL GetMemPtrA
>PUSHYA
>LDYA L.MSG.PSTRCR
>SYSCALL PrintFYA
rts
Cmd.Exec.CD1 stz UsrBuf256
lda ARGS+1
cmp #'/' Full Path?
beq .1
ldy #S.PS.hPREFIX no, init target prefix with actual prefix
lda (pPs),y
>SYSCALL GetMemPtrA
>PUSHYA
>PUSHWI UsrBuf256
>SYSCALL PStrCpy
.1 >PUSHW L.ARGS Append ARG to buffer
>PUSHWI UsrBuf256
>SYSCALL PStrCat
lda #'/'
ldx UsrBuf256
cmp UsrBuf256,x Ending '/' ?
beq .2
sta UsrBuf256+1,x no, add one...
inc UsrBuf256
.2 ldx #0 path is something like : /dir1/../dir2/
.3 ldy #0 reset char counter
.4 cpx UsrBuf256
beq .8
inx
lda UsrBuf256,x
cmp #'/'
beq .5
iny char=char+1!!!
bra .4
.5 tya any char count?
beq .4 no, start counting...
cpy #2 do we have /xx/?
bne .3 no, skip this token
lda #'.'
cmp UsrBuf256-1,x /yy/x./ ?
bne .3
cmp UsrBuf256-2,x /yy/../ ?
bne .3
cpx #4 /../ ?
beq Cmd.Exec.ERRSYN illegal
txa
tay save end of /../
sec
sbc #3 remove ../
tax
.6 dex
lda UsrBuf256,x Found beginning of dir before /../
cmp #'/'
bne .6
.7 lda UsrBuf256,y strip dir/../
sta UsrBuf256,x
cpy UsrBuf256
beq .71
iny
inx
bra .7
.71 stx UsrBuf256
bra .2 Start over...
.8 cpx #1
beq .80 we have '/' go change prefix
>PUSHW L.STAT
>PUSHWI UsrBuf256
>SYSCALL STAT
bcs .9
lda STAT+S.STAT.P.TYPE
cmp #$0F Directory ?
bne Cmd.Exec.ERRSYN
.80 >LDYAI UsrBuf256
>SYSCALL NewPStrYA
bcs .9
phx
ldy #S.PS.hPREFIX
lda (pPs),y
>SYSCALL FreeMemA
pla
ldy #S.PS.hPREFIX
sta (pPs),y
jsr SetPWD
clc
.9 rts
*--------------------------------------
Cmd.Exec.ERRSYN lda #SYSMGR.ERRSYN
sec
rts
*--------------------------------------
Cmd.Exec.STARTPROC
lda ARGS
beq Cmd.Exec.ERRSYN
sec
ror bStartProc
>LDYA L.ARGS
jmp Cmd.ExecYA.1
*--------------------------------------
Cmd.Exec.SET lda ARGS
bne Cmd.Exec.SETVAR
ldy #S.PS.hENV
lda (pPs),y
>SYSCALL GetMemPtrA
>STYA ZPPTR1
* No arg, print all ENV
.1 lda (ZPPTR1)
beq .8 Ending 0 ?
lda ZPPTR1 get next for value
sec
adc (ZPPTR1) Add len+1 to PTR
sta ZPPTR2
lda ZPPTR1+1
adc #0
sta ZPPTR2+1
lda (ZPPTR2) just in case...
beq .8
>PUSHW ZPPTR2 Push value
>PUSHW ZPPTR1 Push name
>LDYA L.MSG.PRINTENV
>SYSCALL PrintFYA
bcs .9
lda ZPPTR2
sec
adc (ZPPTR2) Add len+1 to PTR
sta ZPPTR1
lda ZPPTR2+1
adc #0
sta ZPPTR1+1
bra .1
.8 clc
.9 rts
Cmd.Exec.SETVAR tax
lda ARGS,x
cmp #'=' ARGS ends with =, UnsetEnv
beq .2
.1 dex
beq .3 no =, GetEnv
lda ARGS,x
cmp #'=' ARGS contains =, PutEnv
bne .1
cpx #1 string is '=value' ?
beq .99 syntax error
>LDYA L.ARGS String is VAR=VALUE...
>SYSCALL PutEnvYA
rts
.2 dec ARGS String is "VAR=", Remove endig '='
>LDYA L.ARGS String is "VAR"...
>SYSCALL UnsetEnvYA
rts
* Print requested VAR
.3 >LDYA L.ARGS
>SYSCALL GetEnvYA
bcs .8
>PUSHYA push value
>PUSHW L.ARGS push name
>LDYA L.MSG.PRINTENV
>SYSCALL PrintFYA
.8 clc
.9 rts
.99 jmp Cmd.Exec.ERRSYN
*--------------------------------------
Cmd.Exec.DATE sec
.HS 90 bcc
Cmd.Exec.TIME clc
php
>LDYA L.TIME
>SYSCALL TimeYA
>PUSHWI UsrBuf256
plp
bcc .1
>PUSHW L.FMT.DATE
bra .2
.1 >PUSHW L.FMT.TIME
.2 >PUSHW L.TIME
>SYSCALL StrFTime
>LDYAI UsrBuf256
>SYSCALL PrintFYA
bcs Cmd.Exec.ECHO.RTS
bra Cmd.Exec.ECHO.CR
*--------------------------------------
Cmd.Exec.ECHO lda ARGS
beq Cmd.Exec.ECHO.CR
>PUSHW L.ARGS
>LDYA L.MSG.PSTRCR
>SYSCALL PrintFYA
rts
Cmd.Exec.ECHO.CR
lda #13
>SYSCALL PutCharA
bcs Cmd.Exec.ECHO.RTS
lda #10
>SYSCALL PutCharA
Cmd.Exec.ECHO.RTS
rts
*--------------------------------------
Cmd.Exec.READ lda ARGS
beq .9
lda #0
ldy #bSecureRead
sta (pData),y
lda pData
clc
adc #VarBuffer
sta ZPPTR1
lda pData+1
adc #0
sta ZPPTR1+1
ldx #0
.1 cpx ARGS
beq .8
inx
lda ARGS,x
cmp #' '
beq .1
cmp #'-'
bne .7
cpx ARGS
beq .9
inx
lda ARGS,x
cmp #'S'
bne .2
ldy #bSecureRead
lda #$80
sta (pData),y
bra .1
.2 cmp #'P'
bne .9
cpx ARGS
beq .9
inx
lda ARGS,x
cmp #' '
bne .9
cpx ARGS
beq .9
inx
lda ARGS,x
cmp #'"'
bne .9
.3 cpx ARGS
beq .9
inx
lda ARGS,x
cmp #'"'
beq .1
phx
>SYSCALL PutCharA
plx
bcs .99
bra .3
.9 jmp Cmd.Exec.ERRSYN
.70 inx
lda ARGS,x
cmp #' '
beq .1
.7 lda (ZPPTR1)
cmp #VarLen.MAX
beq .9
inc
sta (ZPPTR1)
tay
lda ARGS,x
sta (ZPPTR1),y
cpx ARGS
bne .70
.8 lda (ZPPTR1) No var name ? SYNERR
beq .9
clc
.99 rts
*--------------------------------------
Cmd.Exec.SLEEP lda ARGS
beq .9
lda #Sleep
clc
adc pData
tay
lda /Sleep
adc pData+1
>PUSHYA
>PUSHW L.ARGS
>SYSCALL AToI
bcs .9
rts
.9 jmp Cmd.Exec.ERRSYN
*--------------------------------------
Cmd.Exec.PAUSE ldy #bPause
lda #$80
sta (pData),y
clc
rts
*--------------------------------------
Cmd.Exec.EXIT ldy #bEXIT
lda #$FF
sta (pData),y
clc
rts
*--------------------------------------
MAN
SAVE /A2OSX.SRC/SBIN/SHELL.S.CMD
LOAD /A2OSX.SRC/SBIN/SHELL.S
ASM
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