mirror of
https://github.com/A2osX/A2osX.git
synced 2024-06-07 01:29:33 +00:00
558 lines
10 KiB
Plaintext
558 lines
10 KiB
Plaintext
PR#3
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PREFIX /A2OSX.SRC
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NEW
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INC 1
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AUTO 6
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.LIST OFF
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*/--------------------------------------
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* #ExpandPStrYA
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* ##In:
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* Y,A = PTR to String to Expand (PSTR)
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* ##Out:
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* X = hMem to Expanded String (PSTR)
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* Y,A = PTR to Expanded String
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*\--------------------------------------
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K.ExpandPStrYA stz K.ExpandPStr.hPStr Reset Intermediate string...
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.11 >STYA ZPPtr2
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stz KrnBuf256 init Expanded String len=0
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stz K.ExpandPStr.bFound No var found yet
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stz K.ExpandPStr.bNoExp Reset no expand flag
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ldy #0
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.10 stz K.ExpandPStr.Start
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.1 tya
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cmp (ZPPtr2) End of PSTR?
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beq .6
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iny
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lda (ZPPtr2),y
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cmp #'''
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bne .21
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lda K.ExpandPStr.bNoExp
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eor #$ff
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sta K.ExpandPStr.bNoExp toggle flag
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bra .1
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.21 bit K.ExpandPStr.bNoExp
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bmi .22
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ldx K.ExpandPStr.Start
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bne .3 already in a var?
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cmp #'$' no, found one ?
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beq .2
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.22 inc KrnBuf256 no, copy char
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ldx KrnBuf256
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sta KrnBuf256,x
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bra .1
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.2 sec
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ror K.ExpandPStr.bFound Toggle flag
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sty K.ExpandPStr.Start save var start
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stz K.ExpandPStr.End
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bra .1 skip this char
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.3 cmp #'{' we are in var, "{" after "$"?
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beq .2
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cmp #'}' end of var?
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beq .5
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jsr K.ExpandPStr.VC we are in var, is char valid?
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bcs .5 no, end here
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sty K.ExpandPStr.End yes, save end
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bra .1
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.5 lda K.ExpandPStr.End get end
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beq .1 empty {} or $/
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phy save current index
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jsr K.ExpandPStr.AV
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ply restore index in string...
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bra .10 reset start flag and continue
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.6 sty K.ExpandPStr.End end of PSTR
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lda K.ExpandPStr.Start are we in a var?
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beq .8 no...exit...
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jsr K.ExpandPStr.AV yes, expand and add to STR
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.8 lda K.ExpandPStr.hPStr working from our temp string ?
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beq .81 no...
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jsr K.FreeMemA yes, discard....
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.81 >LDYAI KrnBuf256
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jsr K.NewPStrYA
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bcs .9
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stx K.ExpandPStr.hPStr save this as temp string, in case of recurse
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bit K.ExpandPStr.bFound Did we expand something ?
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bpl .82
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jmp .11 Yes, start over with hPStr
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.82
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* or exit with Y,A & X from K.NewPStrYA
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.9 rts
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*--------------------------------------
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K.ExpandPStr.AV lda K.ExpandPStr.End
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sec
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sbc K.ExpandPStr.Start compute len of VAR End-Start+1
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ldx KrnBuf256
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inx
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sta KrnBuf256,x
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stx ZPPtr1 Make Ptr1 -> Var NAME
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lda /KrnBuf256
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sta ZPPtr1+1
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ldy K.ExpandPStr.Start
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.1 iny
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inx
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lda (ZPPtr2),y
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sta KrnBuf256,x
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cpy K.ExpandPStr.End
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bne .1
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jsr ENV.CheckSysVarPtr1
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bcc .2 Ptr3=VALUE
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jsr ENV.FindVarPtr1
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bcs .9
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jsr ENV.NextEnvPtr3 Skip NAME
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.2 lda (ZPPtr3)
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beq .9 in case CheckSysVarPtr1 returned a NUL string
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ldy #0
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ldx KrnBuf256
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.3 iny
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lda (ZPPtr3),y
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inx
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sta KrnBuf256,x
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tya
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cmp (ZPPtr3) last char?
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bne .3
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stx KrnBuf256
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.9 rts
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*--------------------------------------
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K.ExpandPStr.VC cmp #'0'
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bcc .9
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cmp #'9'+1
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bcc .8
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cmp #'A'
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bcc .9
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cmp #'Z'+1
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bcc .8
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cmp #'_'
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bne .9
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.8 clc
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rts
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.9 sec
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rts
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*--------------------------------------
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K.ExpandPStr.Start .BS 1
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K.ExpandPStr.End .BS 1
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K.ExpandPStr.bFound .BS 1
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K.ExpandPStr.bNoExp .BS 1
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K.ExpandPStr.hPStr .BS 1
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*/--------------------------------------
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* #PutEnvYA
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* ##In:
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* Y,A = PTR to String NAME=VALUE (PSTR)
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* ##Out:
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*\--------------------------------------
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K.PutEnvYA >STYA ZPPtr1 NAME=VALUE
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lda (ZPPtr1)
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beq .9
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sta KrnBuf256
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tay
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.1 lda (ZPPtr1),y copy PSTR to KrnBuf256
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sta KrnBuf256,y
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dey
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bne .1
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ldy #0
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.2 iny
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cpy KrnBuf256 last char ?
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beq .9 no "=" found
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lda KrnBuf256,y
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cmp #'='
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bne .2
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cpy #1 String like "=value" ?
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beq .9
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cpy KrnBuf256 last char ?
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beq .9 we have "VAR="
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lda KrnBuf256 get actual string len
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sty KrnBuf256 set length of VAR string
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dec KrnBuf256 ...without "="
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clc Substract VAR len+1 from whole len to get
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sbc KrnBuf256 VALUE len
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sta KrnBuf256,y save it at "=" POS
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stz ZPPtr1 #KrnBuf256
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sty ZPPtr2
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lda /KrnBuf256
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sta ZPPtr1+1
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sta ZPPtr2+1
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bra K.SetEnvPtr1Ptr2
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.9 sec
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rts
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*/--------------------------------------
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* #SetEnv
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* ##In:
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* PUSHW = PTR To Value (PSTR)
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* PUSHW = PTR To Name (PSTR)
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* ##Out:
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*\--------------------------------------
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K.SetEnv jsr PullPtr1Ptr2 Ptr1=NAME,Ptr2=VALUE
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K.SetEnvPtr1Ptr2
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jsr S.UnsetEnvPtr1
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jsr ENV.InitEnvPtr3 ZPPtr3 -> Env
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lda ZPPtr3 Compute ENV UPPER LIMIT in Ptr4
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clc
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adc #K.ENV.SIZE
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sta ZPPtr4
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lda ZPPtr3+1
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adc /K.ENV.SIZE
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sta ZPPtr4+1
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ldy ZPPtr3+1
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lda ZPPtr3 Compute New Env Upper limit in A,Y
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sec
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adc (ZPPtr1) add NAME len +1
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bcc .1
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iny
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.1 sec
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adc (ZPPtr2) add VALUE len +1
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bcc .2
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iny
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.2 cmp ZPPtr4 GE than hMem Upper limit ?
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tya
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sbc ZPPtr4+1
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bcs .99
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.3 lda (ZPPtr3) Scan until ending 0...
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beq .4
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inc ZPPtr3
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bne .3
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inc ZPPtr3+1
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bne .3
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.4 lda (ZPPtr1)
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sta (ZPPtr3)
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tay
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.5 lda (ZPPtr1),y
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sta (ZPPtr3),y
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dey
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bne .5
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jsr ENV.NextEnvPtr3
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lda (ZPPtr2)
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sta (ZPPtr3)
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tay
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.6 lda (ZPPtr2),y
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sta (ZPPtr3),y
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dey
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bne .6
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jsr ENV.NextEnvPtr3
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.8 lda #0
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sta (ZPPtr3)
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clc
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rts
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.99 lda #SYSMGR.ERRENVF
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sec
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rts
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*/--------------------------------------
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* #GetEnvYA
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* ##In:
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* Y,A = PTR to NAME (PSTR)
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* ##Out:
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* CC : Y,A = PTR to VALUE (PSTR)
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* CS : not found
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*\--------------------------------------
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K.GetEnvYA >STYA ZPPtr1
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jsr ENV.CheckSysVarPtr1
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bcc .8
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jsr ENV.FindVarPtr1
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bcs .9
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jsr ENV.NextEnvPtr3 Skip NAME
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>LDYA ZPPtr3
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clc just in case ADC in NextEnvPtr1 disturb CC
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.8 rts
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.9 >LDYAI EmptyPSTR
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rts
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*/--------------------------------------
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* #UnsetEnvYA
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* ##In:
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* Y,A = PTR To Name (PSTR)
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* ##Out:
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*\--------------------------------------
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K.UnsetEnvYA >STYA ZPPtr1 Store VAR Name
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S.UnsetEnvPtr1 jsr ENV.FindVarPtr1
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bcs .8 not found, quit
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jsr ENV.DiscardVarPtr3 Ptr3 -> ENVNAME
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.8 clc
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rts
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*--------------------------------------
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* PRIVATE
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*--------------------------------------
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* ENV.CheckSysVarPtr1
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* In:
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* ZPPtr1 -> NAME
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* Out:
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* CC: Found
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* YA -> VALUE
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* CS: Not Found
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*--------------------------------------
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ENV.CheckSysVarPtr1
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lda (ZPPtr1)
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cmp #1 is name 1 char?
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bne .9
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ldy #1
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lda (ZPPtr1),y
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cmp #'0'-1 $0...$9 ??
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bcc .1
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cmp #'9'+1
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bcs .1
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and #$0F
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jsr K.GetArgA
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>STYA ZPPtr3
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rts
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.1 ldx #ENV.SysVarsJmp-ENV.SysVars-1
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.2 cmp ENV.SysVars,x
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beq .3
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dex
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bpl .2
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.9 sec
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rts
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.3 txa
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asl
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tax
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jmp (ENV.SysVarsJmp,x)
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*--------------------------------------
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ENV.SysVars .AS "*#?@$!"
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ENV.SysVarsJmp .DA ENV.SysVarsArgs
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.DA ENV.SysVarsArgC
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.DA ENV.SysVarsRC
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.DA ENV.SysVarsPPID
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.DA ENV.SysVarsPID
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.DA ENV.SysVarsCPID
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*--------------------------------------
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ENV.SysVarsArgs lda #1
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jsr K.GetArgA Trash Ptr1
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stz KrnOut256
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ldx #0
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.1 lda (ZPPtr1)
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beq ENV.SysVarsExit
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ldy #0
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.2 iny
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inx
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lda (ZPPtr1),y
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sta KrnOut256,x
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tya
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cmp (ZPPtr1)
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bne .2
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adc ZPPtr1 CS from beq .2
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sta ZPPtr1
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bcc .3
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inc ZPPtr1+1
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.3 lda #' '
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inx
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beq ENV.SysVarsExit make sure not overlapping buf 256
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sta KrnOut256,x
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bra .1
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ENV.SysVarsArgC jsr K.GetArgC Trash Ptr1
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bra ENV.SysVarsA
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ENV.SysVarsRC ldy #S.PS.RC
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.HS 2C
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ENV.SysVarsPPID ldy #S.PS.PPID
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.HS 2C
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ENV.SysVarsPID ldy #S.PS.PID
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.HS 2C
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ENV.SysVarsCPID ldy #S.PS.CPID
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lda (pPS),y
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ENV.SysVarsA sta HEXBUF
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stz HEXBUF+1
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stz HEXBUF+2
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stz HEXBUF+3
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jsr HEX2DEC
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ldy #0
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.1 lda ASCBUF,y
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cmp #'0'
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bne .2
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iny
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cpy #10
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bne .1
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sta KrnOut256+1
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ldx #1
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bra ENV.SysVarsExit
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.2 ldx #0
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.3 lda ASCBUF,y
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inx
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sta KrnOut256,x
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iny
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cpy #10
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bne .3
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ENV.SysVarsExit stx KrnOut256
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>LDYAI KrnOut256
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>STYA ZPPtr3
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clc
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rts
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*--------------------------------------
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* ENV.FindVarPtr1
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* In:
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* ZPPtr1 -> NAME
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* Out:
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* CC: Found
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* ZPPtr1 -> NAME
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* ZPPtr3 -> ENV.NAME
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* CS: Not Found
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* ZPPtr1 -> NAME
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* ZPPtr3 -> PTR to Ending 0
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*--------------------------------------
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ENV.FindVarPtr1 jsr ENV.InitEnvPtr3 Store ENV
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bcs .99
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lda (ZPPtr3)
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beq .9 end of ENV
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.1 cmp (ZPPtr1) Same len as NAME?
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bne .3
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tay
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.2 lda (ZPPtr1),y
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cmp (ZPPtr3),y
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bne .3
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dey
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bne .2
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clc
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rts
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.3 jsr ENV.NextEnvPtr3 Skip NAME
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jsr ENV.NextEnvPtr3 Skip VALUE
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lda (ZPPtr3)
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bne .1
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.9 sec
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.99 rts
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*--------------------------------------
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* ENV.DiscardVarPtr3
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* In:
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* ZPPtr3 -> ENV.NAME to Discard
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*--------------------------------------
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ENV.DiscardVarPtr3
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lda ZPPtr3 Discard current NAME & VALUE definition
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sec ZPPtr3 -> NAME
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adc (ZPPtr3) add NAME+1 to ZPPtr3
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sta ZPPtr4 store it in ZPPtr4
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lda #0
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adc ZPPtr3+1
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sta ZPPtr4+1
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lda ZPPtr4 add VALUE+1 to ZPPtr4
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sec
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adc (ZPPtr4)
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sta ZPPtr4
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bcc .1
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inc ZPPtr4+1
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.1 ldy #0
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.2 lda (ZPPtr4),y Move back tail...
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sta (ZPPtr3),y
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beq .8 ...until we move ending 0
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iny
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bne .2
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inc ZPPtr3+1
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inc ZPPtr4+1
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bra .2
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.8 rts
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*--------------------------------------
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ENV.InitEnvPtr3 ldy #S.PS.hENV
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lda (pPs),y
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jsr K.GetMemPtrA
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>STYA ZPPtr3 Store ENV
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rts
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*--------------------------------------
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ENV.NextEnvPtr3 lda ZPPtr3
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sec
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adc (ZPPtr3)
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sta ZPPtr3
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bcc .8
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inc ZPPtr3+1
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.8 rts
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*--------------------------------------
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MAN
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SAVE SYS/KERNEL.S.ENV
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LOAD SYS/KERNEL.S
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ASM
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