mirror of https://github.com/A2osX/A2osX.git
355 lines
5.8 KiB
Plaintext
355 lines
5.8 KiB
Plaintext
NEW
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AUTO 3,1
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.LIST OFF
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.OP 65C02
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.OR $2000
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.TF bin/grep
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*/-------------------------------------
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* # GREP
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* Print lines that match patterns
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* ## Arguments
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* **-H**
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* Help screen
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* **-I**
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* Ignoce case
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* **-N**
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* Print line number
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* **-Q**
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* Quiet mode
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* **-S**
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* Silent mode
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* **-V**
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* Invert match
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* ## Return Value
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* if **-Q** specified, always 0
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* otherwise, 0 if a match found, E.NOKEY if not
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*\-------------------------------------
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.INB inc/macros.i
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.INB inc/a2osx.i
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.INB inc/kernel.i
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.INB inc/mli.i
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.INB inc/mli.e.i
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*--------------------------------------
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.DUMMY
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.OR ZPBIN
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ZS.START
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ZPPtr1 .BS 2
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ZPPatternPtr .BS 2
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ZPBufPtr .BS 2
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ArgIndex .BS 1
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ArgPattern .BS 1
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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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bIgnoreCase .BS 1
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bLineNum .BS 1
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bQuiet .BS 1
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bSilent .BS 1
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bInvertMatch .BS 1
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bFound .BS 1
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ZS.END .ED
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*--------------------------------------
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* File Header (16 Bytes)
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*--------------------------------------
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CS.START cld
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jmp (.1,x)
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.DA #$61 6502,Level 1 (65c02)
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.DA #1 BIN Layout Version 1
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.DA #0 S.PS.F.EVENT
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.DA #0
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.DA CS.END-CS.START Code Size (without Constants)
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.DA DS.END-DS.START Data SegmentSize
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.DA #16 Stack Size
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.DA #ZS.END-ZS.START Zero Page Size
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.DA 0
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*--------------------------------------
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* Relocation Table
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*--------------------------------------
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.1 .DA CS.INIT
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.DA CS.RUN
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.DA CS.DOEVENT
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.DA CS.QUIT
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L.MSG.USAGE .DA MSG.USAGE
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L.MSG.CRLF .DA MSG.CRLF
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L.MSG.NUMLINE .DA MSG.NUMLINE
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.DA 0
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*--------------------------------------
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CS.INIT clc
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rts
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*--------------------------------------
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CS.RUN jsr CS.RUN.CheckArgs
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bcs .99
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>LDYAI 256
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>SYSCALL GetMem
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bcs .99
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>STYA ZPBufPtr
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stx hBuf
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.1 >SLEEP
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>PUSHB hFile
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>PUSHW ZPBufPtr
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>PUSHWI 256
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>SYSCALL FGetS
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bcs .7
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inc LineNum
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bne .2
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inc LineNum+1
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.2 jsr CS.RUN.PRINT
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bcc .1
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rts
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.7 cmp #MLI.E.EOF
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bne .98
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lda bQuiet
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bmi .8
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bit bFound
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bmi .8
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lda #E.NOKEY
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sec
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rts
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.8 lda #0 Exit with no Error
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.98 sec
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.99 rts
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*--------------------------------------
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CS.RUN.CheckArgs
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jsr CS.RUN.NextArg
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bcs .7
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lda (ZPPtr1)
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cmp #'-'
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beq .1
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lda ArgPattern
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bne .11
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lda ArgIndex
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sta ArgPattern
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>LDYA ZPPtr1
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>STYA ZPPatternPtr
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bra CS.RUN.CheckArgs
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.11 lda hFile
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bne .97
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>LDYA ZPPtr1
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jsr CS.RUN.OPEN
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bcs .9
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sta hFile
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bra CS.RUN.CheckArgs
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*--------------------------------------
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.1 ldy #1
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lda (ZPPtr1),y
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beq .97
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.2 ldx #OptionList.Cnt-1
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.3 cmp OptionList,x
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beq .4
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dex
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bpl .3
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bra .97
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.4 txa
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lsr
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beq .98 -H or -h
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tax
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sec
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ror bIgnoreCase-1,x
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iny
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lda (ZPPtr1),y
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bne .2
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bra CS.RUN.CheckArgs
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*--------------------------------------
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.7 lda hFile
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bne .8
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ldy #S.PS.hStdIn
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lda (pPS),y
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tay
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ldx FILEs.hFD-1,y
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lda FDs.pLO-1,x
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sta ZPPtr1
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lda FDs.pHI-1,x
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sta ZPPtr1+1
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lda (ZPPtr1)
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cmp #S.FD.T.PIPE
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bne .97
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sty hFile
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.8 clc
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.9 rts
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*--------------------------------------
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.97 lda #E.SYN
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.98 pha
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>PUSHW L.MSG.USAGE
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>PUSHBI 0
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>SYSCALL PrintF
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pla
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sec
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rts
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*--------------------------------------
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CS.RUN.NextArg inc ArgIndex
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lda ArgIndex
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>SYSCALL ArgV
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bcs .9
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>STYA ZPPtr1
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.9 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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>PUSHWZ Aux type
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>SYSCALL FOpen
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bcs .9
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sta hFile
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.9 rts
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*--------------------------------------
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CS.RUN.PRINT >LDYA ZPBufPtr
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>STYA ZPPtr1
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.1 lda (ZPPtr1)
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beq .4
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ldy #$ff
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.2 iny
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lda (ZPPtr1),y
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bne .3
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lda (ZPPatternPtr),y
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bne .4
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.3 lda (ZPPatternPtr),y
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beq .6
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jsr CS.RUN.toUpper
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sta char
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lda (ZPPtr1),y
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jsr CS.RUN.toUpper
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cmp char
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beq .2
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inc ZPPtr1
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bne .1
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inc ZPPtr1+1
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bra .1
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.4 clc not matching
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.HS B0 BCS
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.6 sec matching
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ror
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eor bInvertMatch
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bpl .8
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sec
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ror bFound
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lda bQuiet
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ora bSilent
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bmi .8
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bit bLineNum
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bpl .7
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>PUSHW L.MSG.NUMLINE
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>PUSHW LineNum
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>PUSHBI 2
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>SYSCALL PrintF
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bcs .9
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.7 >LDYA ZPBufPtr
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>SYSCALL PutS
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rts
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.8 clc
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.9 rts
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*--------------------------------------
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CS.RUN.toUpper bit bIgnoreCase
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bpl .9
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cmp #'a'
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bcc .9
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cmp #'z'+1
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bcs .9
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eor #$20
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.9 rts
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*--------------------------------------
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CS.QUIT lda hFile
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beq .1
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>SYSCALL FClose
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.1 lda hBuf
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beq .8
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>SYSCALL FreeMem
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.8 clc
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rts
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*--------------------------------------
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CS.DOEVENT sec
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rts
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*--------------------------------------
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CS.END
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*--------------------------------------
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OptionList .AS "HhIiNnQqSsVv"
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OptionList.Cnt .EQ *-OptionList
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*--------------------------------------
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MSG.USAGE .CS "Usage : GREP <pattern> <File> or CMD|GREP <pattern>\r\n"
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.CS " -H : This help screen\r\n"
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.CS " -I : Ignore Case\r\n"
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.CS " -N : Print line Number\r\n"
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.CS " -Q : Quiet Mode\r\n"
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.CS " -S : Silent Mode\r\n"
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.CS " -V : Invert Match"
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MSG.CRLF .CZ "\r\n"
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MSG.NUMLINE .CZ "%5D:"
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*--------------------------------------
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.DUMMY
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.OR 0
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DS.START
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DS.END .ED
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*--------------------------------------
|
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MAN
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SAVE usr/src/bin/grep.s
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ASM
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