A2osX/BIN/GREP.S.txt
2021-04-16 21:17:18 +02:00

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NEW
AUTO 3,1
.LIST OFF
.OP 65C02
.OR $2000
.TF bin/grep
*--------------------------------------
.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
ArgIndex .BS 1
ArgPattern .BS 1
ZPPtr1 .BS 2
ZPPatternPtr .BS 2
ZPBufPtr .BS 2
hFile .BS 1
hBuf .BS 1
LineNum .BS 2
char .BS 1
bIgnoreCase .BS 1
bLineNum .BS 1
bInvertMatch .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
L.MSG.NUMLINE .DA MSG.NUMLINE
.DA 0
*--------------------------------------
CS.INIT clc
rts
*--------------------------------------
CS.RUN jsr CS.RUN.CheckArgs
bcs CS.RUN.LOOP.RTS
stz LineNum
stz LineNum+1
CS.RUN.LOOP >SLEEP
>PUSHB hFile
>PUSHW ZPBufPtr
>PUSHWI 256
>SYSCALL FGetS
bcs .9
inc LineNum
bne .2
inc LineNum+1
.2 jsr CS.RUN.PRINT
bcc CS.RUN.LOOP
rts
.9 cmp #MLI.E.EOF
bne .99
lda #0 Exit with no Error
.99 sec
CS.RUN.LOOP.RTS rts
*--------------------------------------
CS.RUN.CheckArgs
jsr CS.RUN.NextArg
bcs .4
lda (ZPPtr1)
cmp #'-'
beq .1
lda ArgPattern
bne .11
lda ArgIndex
sta ArgPattern
>LDYA ZPPtr1
>STYA ZPPatternPtr
bra CS.RUN.CheckArgs
.11 lda hFile
bne .97
>LDYA ZPPtr1
jsr CS.RUN.OPEN
bcs .9
sta hFile
bra CS.RUN.CheckArgs
.1 ldy #1
lda (ZPPtr1),y
ldx #OptionList.Cnt-1
.2 cmp OptionList,x
beq .3
dex
bpl .2
bra .97
.3 txa
lsr
beq .98
tax
lda #$80
sta bIgnoreCase-1,x
bra CS.RUN.CheckArgs
.4 lda hFile
bne .80
ldy #S.PS.hStdIn
lda (pPS),y
tax
lsr
bcs .97
lda Nod.Table.hFD-2,x
>SYSCALL GetMemPtr
>STYA ZPPtr1
lda (ZPPtr1)
cmp #S.FD.T.PIPE
bne .97
ldy #S.PS.hStdIn
lda (pPS),y
sta hFile
.80 >LDYAI 256
>SYSCALL GetMem
bcs .9
>STYA ZPBufPtr
stx hBuf
* clc
.9 rts
.97 lda #E.SYN
.98 pha
>PUSHW L.MSG.USAGE
>PUSHBI 0
>SYSCALL PrintF
pla
sec
rts
*--------------------------------------
CS.RUN.NextArg inc ArgIndex
lda ArgIndex
>SYSCALL ArgV
bcs .9
>STYA ZPPtr1
.9 rts
*--------------------------------------
CS.RUN.OPEN >PUSHYA
>PUSHBI O.RDONLY+O.TEXT
>PUSHBI S.FI.T.TXT
>PUSHWZ Aux type
>SYSCALL FOpen
bcs .9
sta hFile
.9 rts
*--------------------------------------
CS.RUN.PRINT >LDYA ZPBufPtr
>STYA ZPPtr1
.1 lda (ZPPtr1)
beq .4
ldy #$ff
.2 iny
lda (ZPPtr1),y
bne .3
lda (ZPPatternPtr),y
bne .4
.3 lda (ZPPatternPtr),y
beq .6
jsr CS.RUN.toUpper
sta char
lda (ZPPtr1),y
jsr CS.RUN.toUpper
cmp char
beq .2
inc ZPPtr1
bne .1
inc ZPPtr1+1
bra .1
.4 clc not matching
.HS B0 BCS
.6 sec matching
ror
eor bInvertMatch
bpl .8
lda bLineNum
bpl .7
>PUSHW L.MSG.NUMLINE
>PUSHW LineNum
>PUSHBI 2
>SYSCALL PrintF
bcs .9
.7 >LDYA ZPBufPtr
>SYSCALL PutS
rts
.8 clc
.9 rts
*--------------------------------------
CS.RUN.toUpper bit bIgnoreCase
bpl .9
cmp #'a'
bcc .9
cmp #'z'+1
bcs .9
eor #$20
.9 rts
*--------------------------------------
CS.QUIT lda hFile
beq .1
>SYSCALL FClose
.1 lda hBuf
beq .8
>SYSCALL FreeMem
.8 clc
rts
*--------------------------------------
CS.DOEVENT sec
rts
*--------------------------------------
CS.END
*--------------------------------------
OptionList .AS "HhIiNnVv"
OptionList.Cnt .EQ *-OptionList
*--------------------------------------
MSG.USAGE .AS "Usage : GREP <pattern> <File> or CMD|GREP <pattern>\r\n"
.AS " -H : This help screen\r\n"
.AS " -I : Ignore Case\r\n"
.AS " -N : Print line Number\r\n"
.AS " -V : Invert Match"
MSG.CRLF .AZ "\r\n"
MSG.NUMLINE .AZ "%5D:"
*--------------------------------------
.DUMMY
.OR 0
DS.START
DS.END .ED
*--------------------------------------
MAN
SAVE usr/src/bin/grep.s
ASM