2021-06-23 15:22:33 +00:00
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.LIST OFF
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.OP 65C02
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.OR $2000
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.TF bin/sed
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*--------------------------------------
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.INB inc/macros.i
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.INB inc/a2osx.i
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.INB inc/kernel.i
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.INB inc/mli.i
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.INB inc/mli.e.i
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*--------------------------------------
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.DUMMY
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.OR ZPBIN
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ZS.START
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ArgIndex .BS 1
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ArgPattern .BS 1
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ZPPtr1 .BS 2
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ZPPatternPtr .BS 2
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ZPBufPtr .BS 2
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hFile .BS 1
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hBuf .BS 1
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LineNum .BS 2
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char .BS 1
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delimiter .BS 1
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replaceidx .BS 1
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bIgnoreCase .BS 1
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ZS.END .ED
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*--------------------------------------
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* File Header (16 Bytes)
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*--------------------------------------
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CS.START cld
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jmp (.1,x)
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.DA #$61 6502,Level 1 (65c02)
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.DA #1 BIN Layout Version 1
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.DA #0 S.PS.F.EVENT
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.DA #0
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.DA CS.END-CS.START Code Size (without Constants)
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.DA DS.END-DS.START Data Segment Size
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.DA #16 Stack Size
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.DA #ZS.END-ZS.START Zero Page Size
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.DA 0
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*--------------------------------------
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* Relocation Table
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*--------------------------------------
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.1 .DA CS.INIT
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.DA CS.RUN
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.DA CS.DOEVENT
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.DA CS.QUIT
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L.MSG.USAGE .DA MSG.USAGE
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L.MSG.CRLF .DA MSG.CRLF
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.DA 0
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*--------------------------------------
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CS.INIT clc
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rts
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*--------------------------------------
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CS.RUN jsr CS.RUN.CheckArgs
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bcs CS.RUN.LOOP.RTS
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stz LineNum
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stz LineNum+1
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CS.RUN.LOOP >SLEEP
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>PUSHB hFile
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>PUSHW ZPBufPtr
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>PUSHWI 256
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>SYSCALL FGetS
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bcs .9
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inc LineNum
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bne .2
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inc LineNum+1
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.2 jsr CS.RUN.PRINT
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bcc CS.RUN.LOOP
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rts
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.9 cmp #MLI.E.EOF
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bne .99
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lda #0 Exit with no Error
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.99 sec
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CS.RUN.LOOP.RTS rts
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*--------------------------------------
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CS.RUN.CheckArgs
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jsr CS.RUN.NextArg
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bcs .4
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lda (ZPPtr1)
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cmp #'-'
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beq .1
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lda ArgPattern
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bne .11
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lda ArgIndex
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sta ArgPattern
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>LDYA ZPPtr1
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>STYA ZPPatternPtr
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jsr CS.RUN.SEDParser
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bcs .97
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bra CS.RUN.CheckArgs
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.11 lda hFile
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bne .97
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>LDYA ZPPtr1
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jsr CS.RUN.OPEN
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bcs .9
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sta hFile
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bra CS.RUN.CheckArgs
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.1 ldy #1
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lda (ZPPtr1),y
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ldx #OptionList.Cnt-1
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.2 cmp OptionList,x
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beq .3
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dex
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bpl .2
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bra .97
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.3 txa
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lsr
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beq .98
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tax
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lda #$80
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sta bIgnoreCase-1,x
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bra CS.RUN.CheckArgs
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.4 lda hFile
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bne .80
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ldy #S.PS.hStdIn
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lda (pPS),y
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tax
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lsr
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bcs .97
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lda Nod.Table.hFD-2,x
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>SYSCALL GetMemPtr
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>STYA ZPPtr1
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lda (ZPPtr1)
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cmp #S.FD.T.PIPE
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bne .97
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ldy #S.PS.hStdIn
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lda (pPS),y
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sta hFile
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.80 >LDYAI 256
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>SYSCALL GetMem
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bcs .9
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>STYA ZPBufPtr
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stx hBuf
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* clc
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.9 rts
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.97 lda #E.SYN
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.98 pha
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>PUSHW L.MSG.USAGE
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>PUSHBI 0
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>SYSCALL PrintF
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pla
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sec
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rts
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*--------------------------------------
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CS.RUN.NextArg inc ArgIndex
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lda ArgIndex
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>SYSCALL ArgV
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bcs .9
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>STYA ZPPtr1
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.9 rts
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*--------------------------------------
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CS.RUN.SEDParser
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* On entry, the expression is in ZPPatternPtr
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* We are looking for "s/search string/replace string/"
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* The '/' delimiter can be any char
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* On exit. ZPPatternPtr points to delimiter-terminated search string,
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* replaceidx contains the offset to the start of replacement str
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stz LineNum Reusing this as cntr
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lda (ZPPatternPtr)
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cmp #'s' Substitute cmd
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bne .8 If not, error
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ldy #$01 Delimiter char
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lda (ZPPatternPtr),y
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sta delimiter Stash for later
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.2 iny
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lda (ZPPatternPtr),y
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beq .4 End of string
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cmp delimiter Is it delimiter?
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bne .2
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inc LineNum Keep count
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lda LineNum
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cmp #$01 Second delim
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bne .2
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sty replaceidx
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bra .2
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.4 lda LineNum Check # of delims
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cmp #$02
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bne .8
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inc ZPPatternPtr Eat 's/'
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bne .5
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inc ZPPatternPtr+1
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.5 inc ZPPatternPtr
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bne .7
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inc ZPPatternPtr+1
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.7 clc
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rts No error return
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.8 sec
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rts
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*--------------------------------------
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CS.RUN.OPEN >PUSHYA
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>PUSHBI O.RDONLY+O.TEXT
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>PUSHBI S.FI.T.TXT
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>PUSHWZ Aux type
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>SYSCALL FOpen
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bcs .9
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sta hFile
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.9 rts
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*--------------------------------------
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CS.RUN.PRINT >LDYA ZPBufPtr
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>STYA ZPPtr1
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2021-07-04 03:53:57 +00:00
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lda (ZPPtr1) If null first time
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beq .8
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2021-06-23 15:22:33 +00:00
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.1 lda (ZPPtr1)
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beq .7 EOL. No match.
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ldy #$ff
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.2 iny
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lda (ZPPtr1),y
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bne .3
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lda (ZPPatternPtr),y EOL
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cmp delimiter
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bne .7 Not end of pattern
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* No match.
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.3 lda (ZPPatternPtr),y
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cmp delimiter
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beq .5 Match
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jsr CS.RUN.toUpper
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sta char
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lda (ZPPtr1),y
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jsr CS.RUN.toUpper
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cmp char
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beq .2
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bra .6 No match
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* Found a match
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.5 jsr CS.RUN.GotMatch
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bra .1
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* Mismatch with pattern, keep going
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.6 jsr CS.RUN.NoMatch
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bra .1
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* Hit EOL but not end of pattern, return
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.7 jsr CS.RUN.NoMatch
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2021-07-04 03:53:57 +00:00
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.8 lda #C.CR
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2021-06-23 15:22:33 +00:00
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>SYSCALL PutChar
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lda #C.LF
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>SYSCALL PutChar
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2021-07-04 03:53:57 +00:00
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.9 clc
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2021-06-23 15:22:33 +00:00
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rts
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*--------------------------------------
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CS.RUN.GotMatch phy
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ldy replaceidx
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dey
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.1 lda (ZPPatternPtr),y
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cmp delimiter
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beq .5
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phy
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>SYSCALL PutChar
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ply
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iny
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bra .1
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.5 ply
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tya Advance ZPPtr1 by Y
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clc
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adc ZPPtr1
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sta ZPPtr1
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lda #$00
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adc ZPPtr1+1
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sta ZPPtr1+1
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ldy #$00
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rts
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*--------------------------------------
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CS.RUN.NoMatch lda (ZPPtr1) Print ZPPtr1->ZPPtr1+Y
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phy
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>SYSCALL PutChar
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ply
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inc ZPPtr1
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bne .2
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inc ZPPtr1+1
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.2 dey
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cpy #$ff
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bne CS.RUN.NoMatch
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ldy #$00
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rts
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*--------------------------------------
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CS.RUN.toUpper bit bIgnoreCase
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bpl .9
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cmp #'a'
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bcc .9
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cmp #'z'+1
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bcs .9
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eor #$20
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.9 rts
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*--------------------------------------
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CS.QUIT lda hFile
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beq .1
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>SYSCALL FClose
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.1 lda hBuf
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beq .8
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>SYSCALL FreeMem
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.8 clc
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rts
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*--------------------------------------
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CS.DOEVENT sec
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rts
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*--------------------------------------
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CS.END
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*--------------------------------------
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OptionList .AS "HhIi"
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OptionList.Cnt .EQ *-OptionList
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*--------------------------------------
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MSG.USAGE .AS "Usage : SED [-I] s/pattern/replacement/ <File>\r\n"
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.AS " or : CMD|SED [-I] s/pattern/replacement/\r\n"
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.AS " -I : Ignore Case"
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MSG.CRLF .AZ "\r\n"
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|
|
*--------------------------------------
|
|
|
|
|
.DUMMY
|
|
|
|
|
.OR 0
|
|
|
|
|
DS.START
|
|
|
|
|
DS.END .ED
|
|
|
|
|
*--------------------------------------
|
