mirror of
https://github.com/A2osX/A2osX.git
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221 lines
3.6 KiB
Plaintext
221 lines
3.6 KiB
Plaintext
NEW
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AUTO 3,1
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*/--------------------------------------
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* # Shift
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* ## ASM
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* A = argument index.
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* ## RETURN VALUE
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* CC : success
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* Y,A = PTR To Arg[A]
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* CS : Out Of Bound
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*\--------------------------------------
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K.Shift jsr K.ArgV
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bcs .9
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>STYA ZPPtr1
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* >STYA ZPPtr2 already set from ArgV
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ldy #$ff
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.1 iny
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lda (ZPPtr1),y
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bne .1
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.2 jsr SHARED.AddYp12P1
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ldy #$ff
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.3 iny
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lda (ZPPtr1),y
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sta (ZPPtr2),y
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bne .3
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tya
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beq .8
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jsr SHARED.AddYp12P2
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bra .2
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.8 ldy #S.PS.ARGC
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lda (pPS),y
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dec
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sta (pPS),y
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clc
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.9 rts
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*/--------------------------------------
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* # ArgV
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* ## ASM
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* A = argument index.
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* ## RETURN VALUE
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* CC : success
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* Y,A = PTR To Arg[A]
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* CS : Out Of Bound
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*\--------------------------------------
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K.ArgV tax save requested arg#
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ldy #S.PS.hARGV
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lda (pPS),y
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jsr K.GetMemPtr
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>STYA ZPPtr2 Use Ptr2, called from ExpandStr
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.1 lda (ZPPtr2) end of ARGV[] ?
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beq .9 yes, not found....
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dex
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bmi .7
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.3 jsr SHARED.GetCP2 skip str
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bne .3
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jsr SHARED.NextCP2 skip \0
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bra .1
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.7 >LDYA ZPPtr2
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.8 clc
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rts
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.9 lda #E.OOB
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sec
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rts
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*/--------------------------------------
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* # Arg2ArgV
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* Expand String and convert to StrV List
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* ## C
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* short int arg2argv(char* args, char* argv[])
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* ## ASM
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* `>PUSHW args`
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* `>PUSHW argv`
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* `>SYSCALL Arg2ArgV`
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* ## RETURN VALUE
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* A = Arg count
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*\--------------------------------------
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K.Arg2ArgV >PULLW ZPPtr2 Get target buffer
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>PUSHWI 0 allocate a new buffer
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jsr K.Expand args on stack
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bcs .9
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>STYA ZPPtr1
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stx .80+1
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ldx #0 Arg Count
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ldy #0 bInQuote
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.1 jsr SHARED.GetCP1
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beq .8
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cmp #C.SPACE
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beq .1 skip leading spaces
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.2 cmp #'"' found a quote ?
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bne .3
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tya
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eor #$ff
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tay
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bra .7 skip quote and check next char
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.3 cmp #C.SPACE
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bne .6 regular char ...store...
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tya
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bmi .4 between quotes... store space...
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inx Found one arg !!!
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lda #0 set this token End
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jsr SHARED.PutCP2
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bra .1
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.4 lda #C.SPACE
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.6 jsr SHARED.PutCP2
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.7 jsr SHARED.GetCP1
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bne .2
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inx
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.8 jsr SHARED.PutCP2 set Argv[x] Ending 0
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sta (ZPPtr2) set Array Ending 0
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phx
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.80 lda #$FF SELF MODIFIED
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jsr K.FreeMem Discard expanded string
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pla get back Arg Count
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* clc
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.9 rts
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*/--------------------------------------
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* # ArgVDup
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* ## ASM
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* Y,A = Src StrV
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* ## RETURN VALUE
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* X = hMem of new StrV
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* A = Str Count
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*\--------------------------------------
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K.ArgVDup >STYA ZPPtr1
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>STYA ZPPtr2
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ldy #0
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ldx #0
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.1 lda (ZPPtr2),y
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beq .2
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.11 iny
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bne .1
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inx
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inc ZPPtr2+1
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bra .1
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.2 iny
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bne .3
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inx
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inc ZPPtr2+1
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.3 lda (ZPPtr2),y
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bne .11
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txa
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jsr K.getmem
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bcs .9
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>STYA ZPPtr2
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phx
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ldx #0
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ldy #0
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.4 lda (ZPPtr1),y
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sta (ZPPtr2),y
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beq .6
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.5 iny
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bne .4
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inc ZPPtr1+1
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inc ZPPtr2+1
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bra .4
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.6 inx
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iny
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bne .7
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inc ZPPtr1+1
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inc ZPPtr2+1
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.7 lda (ZPPtr1),y
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sta (ZPPtr2),y Ending \0 ?
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bne .5
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txa Count
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plx hMem
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clc
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.9 rts
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*--------------------------------------
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MAN
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SAVE usr/src/sys/kernel.s.arg
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LOAD usr/src/sys/kernel.s
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ASM
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