mirror of
https://github.com/A2osX/A2osX.git
synced 2024-06-01 07:41:51 +00:00
593 lines
11 KiB
Plaintext
593 lines
11 KiB
Plaintext
PR#3
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PREFIX /A2OSX.BUILD
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LOMEM $A00
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INC 1
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AUTO 6
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*/--------------------------------------
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* # ExpandStr.YA
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* ## In:
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* Y,A = PTR to String to Expand (C-String)
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* ## Out:
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* X = hMem to Expanded String (C-String)
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* Y,A = PTR to Expanded String
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*\--------------------------------------
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K.ExpandStr.YA stz K.ExpandStr.hPStr Reset Intermediate string...
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.1 >STYA ZPPtr2
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stz K.ExpandStr.BufLen init Expanded String len=0
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stz K.ExpandStr.bFound No var found yet
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stz K.ExpandStr.bNoExp Reset no expand flag
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ldy #0
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.10 stz K.ExpandStr.VarLen
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stz K.ExpandStr.bInVar
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.11 lda (ZPPtr2),y End of CSTR?
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beq .8
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iny
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cmp #'''
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bne .21
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lda K.ExpandStr.bNoExp
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eor #$ff
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sta K.ExpandStr.bNoExp toggle flag
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bra .11
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.21 bit K.ExpandStr.bNoExp
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bpl .23
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.22 ldx K.ExpandStr.BufLen
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sta K.Buf256,x
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inx
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stx K.ExpandStr.BufLen
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bra .11
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.23 ldx K.ExpandStr.bInVar already in a var?
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bne .3 yes...
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cmp #'$' no, found one ?
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bne .22 no, store...
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sta K.ExpandStr.bFound Toggle flag
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sta K.ExpandStr.bInVar
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bra .11 skip this char
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.3 cmp #'{' we are in var, "{" after "$"?
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bne .31
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ldx K.ExpandStr.VarLen No char in var yet ?
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beq .11 normal, "${" syntax is ok,skip
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bne .5 not allowed char in varname, end of var
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.31 cmp #'}' end of var?
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beq .50
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jsr K.ExpandStrValidChar
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bcc .32 yes, add to varname
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ldx K.ExpandStr.VarLen
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bne .5 varname has already chars...end of var
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inx must be a $? or ?x.....go expand
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stx K.ExpandStr.VarLen
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sta K.ExpandStr.VarName
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bra .51 go Expand....
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.32 ldx K.ExpandStr.VarLen
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cpx #16
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beq .11 varname longer than 15....ignore
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sta K.ExpandStr.VarName,x
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inx
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stx K.ExpandStr.VarLen
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bra .11
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.5 dey last char was invalid...move back
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.50 ldx K.ExpandStr.VarLen
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beq .52 var name is empty...start over
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.51 stz K.ExpandStr.VarName,x
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phy save current index
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jsr K.ExpandStrGetValue
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ply restore index in string...
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.52 jmp .10 reset start flag and continue
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.8 ldx K.ExpandStr.VarLen end of STR,are we in a var?
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beq .80 no...exit...
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stz K.ExpandStr.VarName,x
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jsr K.ExpandStrGetValue yes, expand and add to STR
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.80 lda K.ExpandStr.hPStr working from our temp string ?
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beq .81 no...
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jsr K.FreeMem.A yes, discard....
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.81 ldx K.ExpandStr.BufLen
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stz K.Buf256,x
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>LDYAI K.Buf256
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jsr K.NewStr.YA
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bcs .9
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stx K.ExpandStr.hPStr save this as temp string, in case of recurse
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ldx K.ExpandStr.bFound Did we expand something ?
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beq .82
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jmp .1 Yes, start over with hPStr
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.82 ldx K.ExpandStr.hPStr
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* or exit with Y,A from K.NewStrYA
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.9 rts
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*--------------------------------------
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K.ExpandStrValidChar
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cmp #'_'
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beq .8
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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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rts
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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.ExpandStrGetValue
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jsr ENV.ExpandSysVar
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bcc .9
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>LDYAI K.ExpandStr.VarName
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jsr K.GetEnv.YA
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bcs .9
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>STYA ZPPtr3
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jsr ENV.AppendPtr3ToBuf
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.9 rts
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*--------------------------------------
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K.ExpandStr.BufLen .BS 1
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K.ExpandStr.bNoExp .BS 1
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K.ExpandStr.bInVar .BS 1
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K.ExpandStr.bFound .BS 1
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K.ExpandStr.hPStr .BS 1
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K.ExpandStr.VarLen .BS 1
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K.ExpandStr.VarName .BS 16
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*/--------------------------------------
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* # PutEnv.YA
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* ## In:
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* Y,A = PTR to String NAME=VALUE (C-String)
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* ## Out:
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*\--------------------------------------
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K.PutEnv.YA >STYA ZPPtr1 NAME=VALUE
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ldy #0
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.1 lda (ZPPtr1),y copy STR to K.Buf256
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beq .9
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cmp #'='
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beq .2
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sta K.Buf256,y
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iny
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bne .1
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.2 lda #0
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sta K.Buf256,y
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tya
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sec
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adc ZPPtr1
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sta ZPPtr2
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lda ZPPtr1+1
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adc #0
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sta ZPPtr2+1
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>LDYAI K.Buf256
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>STYA ZPPtr1
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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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ldy #0
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ldx #0
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.10 lda (ZPPtr3) End of ENV
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beq .15
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.11 iny Compute ENV size in X,Y
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bne .12
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inx
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.12 inc ZPPtr3
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bne .13
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inc ZPPtr3+1
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.13 lda (ZPPtr3) End of string
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bne .11
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iny
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bne .14
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inx
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.14 inc ZPPtr3
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bne .10
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inc ZPPtr3+1
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bra .10
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.15 sty ZPPtr4
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stx ZPPtr4+1
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ldy #0
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.16 lda (ZPPtr1),y
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beq .17
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iny
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bne .16
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.17 tya
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sec
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adc ZPPtr4
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sta ZPPtr4
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bcc .18
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inc ZPPtr4+1
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.18 ldy #0
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.19 lda (ZPPtr2),y
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beq .20
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iny
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bne .19
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.20 tya
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sec
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adc ZPPtr4
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tax
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bcc .21
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inc ZPPtr4+1
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.21 cpx #K.ENV.SIZE
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lda ZPPtr4+1
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sbc /K.ENV.SIZE
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bcs .99
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ldy #$ff
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.22 iny
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lda (ZPPtr1),y
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sta (ZPPtr3),y
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bne .22
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tya
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sec
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adc ZPPtr3
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sta ZPPtr3
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bcc .23
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inc ZPPtr3+1
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.23 ldy #$ff
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.24 iny
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lda (ZPPtr2),y
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sta (ZPPtr3),y
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bne .24
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iny
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sta (ZPPtr3),y don't forget array ending 0
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clc
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rts
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.99 lda #K.E.ENVF
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* sec
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rts
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*/--------------------------------------
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* # GetEnv.YA
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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.GetEnv.YA >STYA ZPPtr1
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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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clc just in case ADC in NextEnvPtr1 disturb CC
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.9 >LDYA ZPPtr3
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rts
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*/--------------------------------------
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* # UnsetEnv.YA
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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.UnsetEnv.YA >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.ExpandSysVar
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* In:
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* K.ExpandStr.VarName
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* Out:
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* CC: Found
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* Append VALUE to K.Buf256
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* CS: Not Found
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*--------------------------------------
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ENV.ExpandSysVar
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ldx K.ExpandStr.VarLen
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cpx #1 is name 1 char?
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bne .9
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lda K.ExpandStr.VarName
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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 #$0F
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jsr K.GetArg.A
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bcs .8 Arg# is undefined, do not append anything
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>STYA ZPPtr3
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jmp ENV.AppendPtr3ToBuf
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.8 clc
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rts
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.1 ldx #ENV.SysVarsJmp-ENV.SysVars-1
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.2 cmp ENV.SysVars,x
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beq .3
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dex
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bpl .2
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.9 sec
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.99 rts
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.3 txa
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asl
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tax
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jmp (ENV.SysVarsJmp,x)
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ENV.SysVars .AS "*#?@$!"
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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.GetArg.A
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bcs .8
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>STYA ZPPtr3
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.1 lda (ZPPtr3)
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beq .8
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jsr ENV.AppendPtr3ToBuf
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.2 jsr ENV.NextEnvPtr3
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lda (ZPPtr3)
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beq .8
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inx
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beq .8 make sure not overlapping buf 256
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lda #' '
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sta K.Buf256,x
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stx K.ExpandStr.BufLen
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jsr ENV.AppendPtr3ToBuf
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bra .2
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.8 clc
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rts
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*--------------------------------------
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ENV.AppendPtr3ToBuf
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ldx K.ExpandStr.BufLen
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ldy #$ff
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dex
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.1 iny
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inx
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lda (ZPPtr3),y
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sta K.Buf256,x
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bne .1
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stx K.ExpandStr.BufLen
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rts
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*--------------------------------------
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ENV.SysVarsArgC ldy #S.PS.ARGC
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.HS 2C
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ENV.SysVarsRC ldy #S.PS.RC
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.HS 2C
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ENV.SysVarsPPID ldy #S.PS.PPID
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.HS 2C
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ENV.SysVarsPID ldy #S.PS.PID
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.HS 2C
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ENV.SysVarsCPID ldy #S.PS.CPID
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lda (pPS),y
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stz .2+1
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stz .3+1
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ldx #8
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sed
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.1 asl
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pha
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.2 lda #$ff Self Modified
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adc .2+1
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sta .2+1
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.3 lda #$ff Self Modified
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adc .3+1
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sta .3+1
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pla
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dex
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bne .1
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cld
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ldx K.ExpandStr.BufLen
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lda .3+1
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beq .4
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sta K.Buf256,x
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inx
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.4 lda .2+1
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lsr
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lsr
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lsr
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lsr
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beq .5
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ora #$30
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sta K.Buf256,x
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inx
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.5 lda .2+1
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and #$0f
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ora #$30
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sta K.Buf256,x
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inx
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stx K.ExpandStr.BufLen
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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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.1 lda (ZPPtr3)
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beq .9 end of ENV
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ldy #0
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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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ora #0
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beq .8
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iny
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bne .2
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.8 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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bra .1
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.9 sec
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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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>LDYA ZPPtr3 save actual Ptr
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>STYA ZPPtr4
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jsr ENV.NextEnvPtr3 Skip current NAME....
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jsr ENV.NextEnvPtr3 Skip current VALUE....
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ldy #0
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.1 lda (ZPPtr3),y Move back CSTRs...
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.2 sta (ZPPtr4),y
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beq .3 0 ended....
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iny
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bne .1
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inc ZPPtr3+1
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inc ZPPtr4+1
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bra .1
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.3 iny
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bne .4
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inc ZPPtr3+1
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inc ZPPtr4+1
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.4 lda (ZPPtr3),y
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bne .2 Until array ending 0
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sta (ZPPtr4),y
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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.GetMemPtr.A
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>STYA ZPPtr3 Store ENV
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rts
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*--------------------------------------
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ENV.NextEnvPtr3 ldy #0
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.1 lda (ZPPtr3),y
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beq .2
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iny
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bne .1
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.2 tya
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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 /A2OSX.SRC/SYS/KERNEL.S.ENV
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LOAD /A2OSX.SRC/SYS/KERNEL.S
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ASM
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