A2osX/BIN/CAT.S.txt

NEW
PREFIX /A2OSX.BUILD
AUTO 4,1
				.LIST OFF
				.OP	65C02
				.OR	$2000
				.TF BIN/CAT
*--------------------------------------
				.INB INC/MACROS.I
				.INB INC/A2OSX.I
				.INB INC/MLI.I
				.INB INC/MLI.E.I
*--------------------------------------
ZPPTR1			.EQ ZPBIN
ZPBufPtr		.EQ ZPBIN+2
*--------------------------------------
*			File Header (16 Bytes)
*--------------------------------------
CS.START		cld
				jmp (.1,x)
				.DA #$61				6502,Level 1 (65c02)
				.DA #1					BIN Layout Version 1
				.DA #S.PS.F.EVENT		S.PS.F
				.DA #0
				.DA CS.END-CS.START		CS
				.DA DS.END-DS.START		DS
				.DA #16					SS
				.DA #4					ZP
				.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.LINENUM	.DA MSG.LINENUM
L.MSG.CTRLCHAR	.DA MSG.CTRLCHAR
L.ASCII			.DA ASCII
				.DA 0
*--------------------------------------
CS.INIT							
.1				>INC.G ArgCount
				>SYSCALL ArgV
				bcs .7
				
				>STYA ZPPtr1
				
				lda (ZPPtr1)
				cmp #'-'
				bne .4
				
				ldy #1 
				lda (ZPPtr1),y

				ldx OptionList
				
.2				cmp OptionList,x
				beq .3
				dex
				bne .2
				
.99				>PUSHBI 0
				>LDYA L.MSG.USAGE
				>SYSCALL printf
				lda #E.SYN
				sec
				rts
				
.3				ldy OptionVars-1,x
				lda #$80
				sta (pData),y
				bra .1
				
.4				>INC.G FileCount
				bra .1					scan for any other args
				
.7				>LDA.G FileCount
				beq .99
				
				>LDYAI 256
				>SYSCALL GetMem
				bcs .9
				
				>STYA ZPBufPtr
				txa
				>STA.G hBuf

				clc
.9				rts
*--------------------------------------
CS.RUN			>SYSCALL GetChar
				bcs .10					no char
				
				cmp #$03				Ctrl-C
				beq .99					Abort....
				
				cmp #$13				Ctrl-S
				bne .10

				>LDA.G bPause
				eor	#$ff
				sta (pData),y
				bne .8
				
.10				>LDA.G bPause
				bne .8					Pause...
				
				>LDA.G hFILE
				bne .2
				
.1				>INC.G ArgIndex
				>SYSCALL ArgV
				bcs .99					No more arg...the end!
				
				>STYA ZPPtr1
				
				lda (ZPPtr1)
				cmp #'-'
				beq .1					An option, skip...
				
				>LDYA ZPPtr1
				
				jsr CS.RUN.OPEN
				bcs .9
				
				>STA.G hFILE

				clc
				rts
				
.2				pha
				>PUSHWI	256
				>PUSHW ZPBufPtr
				pla
				>SYSCALL FRead
				
				bcc CS.RUN.PRINT
				
				cmp #MLI.E.EOF
				bne .9
				
				jsr CS.RUN.CLOSE
				
.8				clc
				rts

.99				lda #0					Exit with no Error
.9				sec
				rts
*--------------------------------------
CS.RUN.PRINT	sty	BytesRead			Y,A = Bytes read
				stz ByteIndex
				
				>INCW.G LineNum

				>LDA.G bSuppressBlankLine
				lda (pData),y
				bpl .10
								
				lda BytesRead
				beq .12					Empty line ?
				dec
				bne .1					Only one CR ?
				lda (ZPBufPtr)
				cmp #13
				bne .1
				
.12				>LDA.G bPrintedBlankLine
				bmi .8
				
				lda #$ff
				sta (pData),y
				bra .10
				
.1				lda #0
				>STA.G bPrintedBlankLine
				
.10				jsr CS.RUN.PRINTNUM
				bcs .9
				
.20				ldy ByteIndex
				lda (ZPBufPtr),y
				cmp #' '
				bcs .6
				
				cmp #13					Allow printing of CR even if not bPrintAll
				beq .4
				
				>LDA.G bPrintAll
				bpl .7
	
				>LDYA L.ASCII
				>STYA ZPPtr1
				
				ldy ByteIndex
				lda (ZPBufPtr),y
				tax
				
.2				dex
				bmi .3
				
				lda ZPPtr1
				sec
				adc (ZPPtr1)
				sta ZPPtr1
				bcc .2
				inc ZPPtr1+1
				bra .2
				
.3				>PUSHW ZPPtr1

				>PUSHBI 2
				>LDYA L.MSG.CTRLCHAR				
				>SYSCALL printf
				bcs .9
				
				bra .7
				
.4				lda #13
				>SYSCALL PutChar				
				bcs .9
				lda #10
				
.6				>SYSCALL PutChar
				bcs .9
							
.7				inc ByteIndex
				dec BytesRead
				bne .20
				
.8				clc
				
.9				rts				
*--------------------------------------
CS.RUN.PRINTNUM	clc
				>LDA.G bLineNum
				bpl .8

				>PUSHW.G LineNum

				>PUSHBI 2
				>LDYA L.MSG.LINENUM
				>SYSCALL printf
.8				rts
*--------------------------------------
CS.RUN.OPEN		pha
				
				>PUSHWI 0				Aux type
				>PUSHBI S.FI.T.TXT
				>PUSHBI	O.RDONLY+O.TEXT
				
				pla

				>SYSCALL FOpen
				bcs .9

				pha

				lda #0
				>STA.G bPrintedBlankLine	Reset this flag for the new file
				
				pla
				clc
.9				rts
*--------------------------------------
CS.QUIT			>LDA.G hBuf
				beq CS.RUN.CLOSE
				>SYSCALL FreeMem

CS.RUN.CLOSE	ldy #hFILE
				lda (pData),y
				beq .8
				
				pha
				lda #0
				sta (pData),y
				pla
				>SYSCALL FClose
				
.8				clc
				rts
*--------------------------------------
CS.DOEVENT		sec
				rts
*--------------------------------------
CS.END
*--------------------------------------
OptionList		>PSTR "ANSans"
OptionVars		.DA #bPrintAll,#bLineNum,#bSuppressBlankLine,#bPrintAll,#bLineNum,#bSuppressBlankLine
*--------------------------------------
MSG.USAGE		.AZ "Usage : CAT File1 [File2...]\r\n   -A : Show All non printable caracters\r\n   -N : Number all output lines\r\n   -S : Suppress repeated empty output lines\r\n"
MSG.LINENUM		.AZ "%5D:"
MSG.CTRLCHAR	.AZ "[%S]"
*--------------------------------------
ASCII			>PSTR "NULL"
				>PSTR "SOH"
				>PSTR "STX"
				>PSTR "ETX"
				>PSTR "EOT"
				>PSTR "ENQ"
				>PSTR "ACK"
				>PSTR "BEL"
				>PSTR "BS"
				>PSTR "TAB"
				>PSTR "LF"
				>PSTR "VT"
				>PSTR "FF"
				>PSTR "CR"
				>PSTR "SO"
				>PSTR "SI"
				>PSTR "DLE"
				>PSTR "DC1"
				>PSTR "DC2"
				>PSTR "DC3"
				>PSTR "DC4"
				>PSTR "NAK"
				>PSTR "SYN"
				>PSTR "ETB"
				>PSTR "CAN"
				>PSTR "EM"
				>PSTR "SUB"
				>PSTR "ESC"
				>PSTR "FS"
				>PSTR "GS"
				>PSTR "RS"
				>PSTR "US"
*--------------------------------------
BytesRead		.BS 1
ByteIndex		.BS 1
*--------------------------------------
				.DUMMY
				.OR 0
DS.START
ArgCount		.BS 1
FileCount		.BS 1
bPause			.BS 1
bPrintAll		.BS 1
bLineNum		.BS 1
bSuppressBlankLine	.BS 1
ArgIndex		.BS 1
hBuf			.BS 1
hFile			.BS 1
LineNum			.BS 2
bPrintedBlankLine	.BS 1
DS.END
				.ED
*--------------------------------------
MAN
SAVE /A2OSX.SRC/BIN/CAT.S
ASM