A2osX/BIN/CUT.S.txt
2019-07-26 16:23:07 +02:00

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NEW
AUTO 3,1
.LIST OFF
.OP 65C02
.OR $2000
.TF BIN/CUT
*--------------------------------------
.INB INC/MACROS.I
.INB INC/A2OSX.I
.INB INC/KERNEL.I
.INB INC/MLI.I
.INB INC/MLI.E.I
*--------------------------------------
.DUMMY
.OR ZPBIN
ZS.START
ZPPTR1 .BS 2
ZPBufPtr .BS 2
ArgCount .BS 1
ArgIndex .BS 1
OptionIdx .BS 1
hBuf .BS 1
FieldNum .BS 1
StartChar .BS 1
EndChar .BS 1
Separator .BS 1
ZS.END
.ED
*--------------------------------------
* File Header (16 Bytes)
*--------------------------------------
CS.START cld
jmp (.1,x)
.DA #$61 6502,Level 1 (65c02)
.DA #1 BIN Layout Version 1
.DA #0 S.PS.F.EVENT
.DA #0
.DA CS.END-CS.START Code Size (without Constants)
.DA DS.END-DS.START Data SegmentSize
.DA #16 Stack Size
.DA #ZS.END-ZS.START Zero Page Size
.DA 0
*--------------------------------------
* Relocation Table
*--------------------------------------
.1 .DA CS.INIT
.DA CS.RUN
.DA CS.DOEVENT
.DA CS.QUIT
L.MSG.USAGE .DA MSG.USAGE
L.MSG.CRLF .DA MSG.CRLF
.DA 0
*--------------------------------------
CS.INIT clc
rts
*--------------------------------------
CS.RUN stz ArgCount
lda #C.SPACE
sta Separator
.10 jsr CS.RUN.NextArg
bcs .8
lda (ZPPtr1)
cmp #'-'
beq .1
lda ArgCount
sta ArgIndex
bra .10
.1 ldy #1
lda (ZPPtr1),y
ldx OptionList
.2 cmp OptionList,x
beq .3
dex
bne .2
bra .97
.3 txa
lsr
beq .98 -H
cmp #4 -S
bne .4
jsr CS.RUN.NextArg
bcs .97
lda (ZPPtr1)
sta Separator
bra .10
.4 sta OptionIdx
jsr CS.RUN.NextArg
bcs .97
>SYSCALL atoi
bcs .97
tax
bne .97
tya
ldx OptionIdx
sta FieldNum-1,x
bra .10 scan for any other args
.97 lda #E.SYN
.98 pha
>PUSHBI 0
>LDYA L.MSG.USAGE
>SYSCALL printf
pla
sec
.9 rts
.8 >LDYAI 256
>SYSCALL GetMem
bcs .9
>STYA ZPBufPtr
stx hBuf
lda ArgIndex
beq .80
>SYSCALL ArgV
>PUSHYA
>LDYA ZPBufPtr
>SYSCALL strcpy
bra CS.RUN.OUT
.80 ldy #S.PS.hStdIn
lda (pPS),y
tax
lda OF.Table.hFD-1,x
>SYSCALL GetMemPtr
>STYA ZPPtr1
lda (ZPPtr1)
cmp #S.FD.T.PIPE
bne .97
>PUSHWI 256
>PUSHW ZPBufPtr
ldy #S.PS.hStdIn
lda (pPS),y
>SYSCALL fgets
bcc CS.RUN.OUT
cmp #MLI.E.EOF
bne .9
CS.RUN.OUT lda FieldNum
beq CS.RUN.OUT.MN
ldy #$ff
.1 iny skip spaces
lda (ZPBufPtr),y
beq CS.RUN.PRINTCR
cmp Separator
beq .1
dec FieldNum
beq .4
.2 iny skip token
lda (ZPBufPtr),y
beq CS.RUN.PRINTCR
eor Separator
bne .2
bra .1
.4 jsr CS.RUN.AddYToBufPtr
ldy #$ff
.6 iny
lda (ZPBufPtr),y
beq .8
eor Separator
bne .6
sta (ZPBufPtr),y
.8 >LDYA ZPBufPtr
>SYSCALL puts
lda #0 Exit with no Error
sec
rts
*--------------------------------------
CS.RUN.PRINTCR >PUSHBI 0
>LDYA L.MSG.CRLF
>SYSCALL printf
bcs .9
lda #0
sec
.9 rts
*--------------------------------------
CS.RUN.OUT.MN ldy #$ff
ldx StartChar
beq .2
.1 iny
lda (ZPBufPtr),y
beq CS.RUN.PRINTCR
dex
bne .1
.2 ldx EndChar
beq .8
.3 iny
lda (ZPBufPtr),y
beq .8
cpy EndChar
bne .3
lda #0
sta (ZPBufPtr),y
.8 ldy StartChar
jsr CS.RUN.AddYToBufPtr
>LDYA ZPBufPtr
>SYSCALL puts
lda #0 Exit with no Error
sec
rts
*--------------------------------------
CS.RUN.NextArg inc ArgCount
lda ArgCount
>SYSCALL ArgV
bcs .9
>STYA ZPPtr1
.9 rts
*--------------------------------------
CS.RUN.AddYToBufPtr
tya
clc
adc ZPBufPtr
sta ZPBufPtr
bcc .8
lda ZPBufPtr+1
.8 rts
*--------------------------------------
CS.QUIT lda hBuf
beq .8
>SYSCALL FreeMem
.8 clc
rts
*--------------------------------------
CS.DOEVENT sec
rts
*--------------------------------------
CS.END
*--------------------------------------
OptionList >PSTR "HhFfMmNnSs"
*--------------------------------------
MSG.USAGE .AS "Usage : CUT "line of text"\r\n"
.AS " -H : This help screen\r\n"
.AS "-F nn : Output field nn\r\n"
.AS "-M nn : Output starting at nn\r\n"
.AS "-N nn : Output Ending at nn\r\n"
.AS "-S ch : Change default SPACE separator to 'ch'"
MSG.CRLF .AZ "\r\n"
*--------------------------------------
.DUMMY
.OR 0
DS.START
DS.END
.ED
*--------------------------------------
MAN
SAVE USR/SRC/BIN/CUT.S
ASM