A2osX/BIN/CUT.S.txt

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NEW
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AUTO 3,1
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.LIST OFF
.OP 65C02
.OR $2000
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.TF bin/cut
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*--------------------------------------
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.INB inc/macros.i
.INB inc/a2osx.i
.INB inc/kernel.i
.INB inc/mli.i
.INB inc/mli.e.i
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*--------------------------------------
.DUMMY
.OR ZPBIN
ZS.START
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ZPPtr1 .BS 2
ZPBuf .BS 2
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ZPBufPtr .BS 2
ArgIndex .BS 1
ArgFile .BS 1
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OptionIdx .BS 1
hBuf .BS 1
FieldNum .BS 1
StartChar .BS 1
EndChar .BS 1
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Separator .BS 1
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hToClose .BS 1
ZS.END .ED
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*--------------------------------------
* File Header (16 Bytes)
*--------------------------------------
CS.START cld
jmp (.1,x)
.DA #$61 6502,Level 1 (65c02)
.DA #1 BIN Layout Version 1
.DA #0 S.PS.F.EVENT
.DA #0
.DA CS.END-CS.START Code Size (without Constants)
.DA DS.END-DS.START Data SegmentSize
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.DA #32 Stack Size
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.DA #ZS.END-ZS.START Zero Page Size
.DA 0
*--------------------------------------
* Relocation Table
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*--------------------------------------
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.1 .DA CS.INIT
.DA CS.RUN
.DA CS.DOEVENT
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.DA CS.QUIT
L.MSG.USAGE .DA MSG.USAGE
L.MSG.CRLF .DA MSG.CRLF
.DA 0
*--------------------------------------
CS.INIT clc
rts
*--------------------------------------
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CS.RUN lda #C.SPACE
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sta Separator
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.10 jsr CS.RUN.NextArg
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bcs .8
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lda (ZPPtr1)
cmp #'-'
beq .1
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lda ArgIndex
sta ArgFile
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bra .10
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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
beq .3
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dex
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bpl .2
.97 lda #E.SYN
.98 pha
>LDYA L.MSG.USAGE
>SYSCALL PutS
pla
sec
.9 rts
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.3 txa
lsr
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beq .98 -H
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cmp #4 -S
bne .4
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jsr CS.RUN.NextArg
bcs .97
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lda (ZPPtr1)
sta Separator
bra .10
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.4 sta OptionIdx
jsr CS.RUN.NextArg
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bcs .97
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>SYSCALL AToI
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bcs .97
tax
bne .97
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tya
ldx OptionIdx
sta FieldNum-1,x
bra .10 scan for any other args
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.8 >LDYAI 256
>SYSCALL GetMem
bcs .9
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>STYA ZPBuf
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>STYA ZPBufPtr
stx hBuf
lda ArgFile
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beq .80
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>PUSHW ZPBufPtr
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>SYSCALL ArgV
>PUSHYA
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>SYSCALL StrCpy
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jsr CS.RUN.OUT
bcs .9
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lda #0 Exit with no Error
sec
rts
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.80 ldy #S.PS.hStdIn
lda (pPS),y
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tay
ldx FILEs.hFD-1,y
ldy FDs.pLO-1,x
lda FDs.pHI-1,x
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>STYA ZPPtr1
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lda (ZPPtr1)
cmp #S.FD.T.PIPE
bne CS.RUN.LOOP
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ldy #S.PS.hStdIn
lda (pPS),y
sta hToClose
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*--------------------------------------
CS.RUN.LOOP >SLEEP
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ldy #S.PS.hStdIn
lda (pPS),y
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>PUSHA
>LDYA ZPBuf
>STYA ZPBufPtr
>PUSHYA
>PUSHWI 255
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>SYSCALL FGetS
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bcs .8
lda (ZPBufPtr)
beq CS.RUN.LOOP
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jsr CS.RUN.OUT
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bcc CS.RUN.LOOP
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.8 cmp #MLI.E.EOF
bne .90
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lda #0
.90 sec
.9 rts
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*--------------------------------------
CS.RUN.OUT ldx FieldNum
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beq CS.RUN.OUT.MN
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ldy #$ff
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.1 iny skip spaces
lda (ZPBufPtr),y
beq CS.RUN.PRINTCR
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cmp Separator
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beq .1
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dex
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beq .4
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.2 iny skip token
lda (ZPBufPtr),y
beq CS.RUN.PRINTCR
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eor Separator
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bne .2
bra .1
.4 jsr CS.RUN.AddYToBufPtr
ldy #$ff
.6 iny
lda (ZPBufPtr),y
beq .8
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eor Separator
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bne .6
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sta (ZPBufPtr),y
.8 >LDYA ZPBufPtr
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>SYSCALL PutS
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rts
*--------------------------------------
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CS.RUN.PRINTCR >PUSHW L.MSG.CRLF
>PUSHBI 0
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>SYSCALL PrintF
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rts
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*--------------------------------------
CS.RUN.OUT.MN ldy #0
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ldx StartChar
beq .2
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.1 dex
beq .2
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lda (ZPBufPtr),y
beq CS.RUN.PRINTCR
iny
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bra .1
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.2 lda EndChar
beq .8
.3 lda (ZPBufPtr),y
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beq .8
cpy EndChar
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beq .4
iny
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bra .3
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.4 lda #0
sta (ZPBufPtr),y
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.8 ldy StartChar
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beq .80
dey
beq .80
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jsr CS.RUN.AddYToBufPtr
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.80 >LDYA ZPBufPtr
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>SYSCALL PutS
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rts
*--------------------------------------
CS.RUN.NextArg inc ArgIndex
lda ArgIndex
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>SYSCALL ArgV
bcs .9
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>STYA ZPPtr1
.9 rts
*--------------------------------------
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CS.RUN.AddYToBufPtr
tya
clc
adc ZPBufPtr
sta ZPBufPtr
bcc .8
inc ZPBufPtr+1
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.8 rts
*--------------------------------------
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CS.QUIT lda hToClose
beq .1
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>SYSCALL FClose Close the pipe
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.1 lda hBuf
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beq .8
>SYSCALL FreeMem
.8 clc
rts
*--------------------------------------
CS.DOEVENT sec
rts
*--------------------------------------
CS.END
*--------------------------------------
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OptionList .AS "HhFfMmNnSs"
OptionList.Cnt .EQ *-OptionList
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*--------------------------------------
MSG.USAGE .CS "Usage : CUT "line of text"\r\n"
.CS " -H : This help screen\r\n"
.CS " -F nn : Output field nn\r\n"
.CS " -M nn : Output starting at nn\r\n"
.CS " -N nn : Output Ending at nn\r\n"
.CS " -S ch : Change default SPACE separator to 'ch'"
MSG.CRLF .CZ "\r\n"
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*--------------------------------------
.DUMMY
.OR 0
DS.START
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DS.END .ED
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*--------------------------------------
MAN
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SAVE usr/src/bin/cut.s
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ASM