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Working version of SED! Except it can't handle spaces in pattern.
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@ -21,6 +21,8 @@ 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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@ -100,6 +102,8 @@ CS.RUN.CheckArgs
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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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@ -185,6 +189,54 @@ CS.RUN.NextArg inc ArgIndex
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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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@ -209,10 +261,12 @@ CS.RUN.PRINT >LDYA ZPBufPtr
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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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@ -241,10 +295,19 @@ CS.RUN.PRINT >LDYA ZPBufPtr
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clc
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rts
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*--------------------------------------
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CS.RUN.GotMatch lda #'*' TODO ...
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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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@ -302,7 +365,8 @@ CS.END
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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 <pattern> <File> or CMD|SED <pattern>\r\n"
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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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*--------------------------------------
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