A2osX/BIN/GREP.S.txt
2020-05-25 23:03:11 +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
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
.10 jsr CS.RUN.NextArg
bcs .8
lda (ZPPtr1)
cmp #'-'
beq .1
lda ArgPattern
bne .11
lda ArgIndex
sta ArgPattern
>LDYA ZPPtr1
>STYA ZPPatternPtr
bra .10
.11 lda hFile
bne .97
>LDYA ZPPtr1
jsr CS.RUN.OPEN
bcs .9
sta hFile
bra .10
.1 ldy #1
lda (ZPPtr1),y
ldx #OptionList.Cnt-1
.2 cmp OptionList,x
beq .3
dex
bpl .2
bra .97
.3 txa
beq .98
lsr
tax
lda #$80
sta bIgnoreCase-1,x
bra .10 scan for any other args
.97 lda #E.SYN
.98 pha
>PUSHW L.MSG.USAGE
>PUSHBI 0
>SYSCALL PrintF
pla
sec
.9 rts
.8 lda hFile
bne .80
ldy #S.PS.hStdIn
lda (pPS),y
tax
lda OF.Table.hFD-1,x
>SYSCALL GetMemPtr
>STYA ZPPtr1
lda (ZPPtr1)
cmp #S.FD.T.PIPE
bne .97
ldy #S.PS.hStdIn
lda (pPS),y
sta hFile
.80 >LDYAI 256
>SYSCALL GetMem
bcs .9
>STYA ZPBufPtr
stx hBuf
stz LineNum
stz LineNum+1
CS.RUN.LOOP >SLEEP
>PUSHWI 256
>PUSHW ZPBufPtr
lda hFile
>SYSCALL fgets
bcs .9
inc LineNum
bne .2
inc LineNum+1
.2 jsr CS.RUN.PRINT
bcc CS.RUN.LOOP
rts
.9 cmp #MLI.E.EOF
bne .99
lda #0 Exit with no Error
.99 sec
rts
*--------------------------------------
CS.RUN.OPEN >PUSHYA
>PUSHBI O.RDONLY+O.TEXT
>PUSHBI S.FI.T.TXT
>PUSHWZ Aux type
>SYSCALL FOpen
bcs .9
sta hFile
.9 rts
*--------------------------------------
CS.RUN.PRINT >LDYA ZPBufPtr
>STYA ZPPtr1
.1 lda (ZPPtr1)
beq .8
ldy #$ff
.2 iny
lda (ZPPtr1),y
bne .3
lda (ZPPatternPtr),y
bne .8
.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
.6 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.NextArg inc ArgIndex
lda ArgIndex
>SYSCALL ArgV
bcs .9
>STYA ZPPtr1
.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 .AZ "HhIiNn"
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"
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