A2osX/SYS/KERNEL.S.DIR.txt

PR#3
PREFIX /A2OSX.SRC
NEW
INC 1
AUTO 6
				.LIST OFF
*--------------------------------------
* In :
*  X = #SYSCall 
*  Y,A = PATH (PSTR)
* Out : 
*  CC : Y,A = PTR to S.DIR
*  CS : A = EC
*--------------------------------------
K.OPENDIRYA		jsr K.PFTCheckPathYA
				>STYA ZPQuickPtr2
				>STYA MLICALL.PARAMS+1	For MLIOPEN
				
				>PUSHWI S.DIR.PRODOS
				>PUSHBI S.MEM.F.INIT0
				jsr K.GetMem
				bcs .9
				
				>STYA ZPQuickPtr1
				stx K.OPENDIRYA.hDIR
						
				lda (ZPQuickPtr2)
				cmp #1					One char ?
				bne .7					No, Go open dir....
				tay						Y=1
				lda (ZPQuickPtr2),y
				cmp #'/'				Root required ?
				beq .8					Yes, Go for ONLINE Call (S.DIR.PRODOS.REF=0)
				
				lda #SYSMGR.ERRSYN
				sec
.9				rts
				
.7				>PUSHWI 1024			get a ProDOS IOBUF
				>PUSHBI S.MEM.F.ALIGN+S.MEM.F.NOMOVE
				jsr K.GetMem
				bcs .98
				
				>STYA MLICALL.PARAMS+3	Save Ptr to IOBUF for MLIOPEN call
				txa
				ldy #S.DIR.PRODOS.IOBUF
				sta (ZPQuickPtr1),y
				
				>MLICALL MLIOPEN
				bcs .98
				
				lda MLICALL.PARAMS+5	get ref_num
				ldy #S.DIR.PRODOS.REF
				sta (ZPQuickPtr1),y				

.8				lda K.OPENDIRYA.hDIR
				clc
				rts
				
.98				pha						save MLI error
				jsr K.CLOSEDIRA.1
				pla						get back MLI error				
				sec
.99				rts
*--------------------------------------				
K.OPENDIRYA.hDIR	.BS 1				
*--------------------------------------
* In : 
*  A = hDIR
* Out : 
*  CC : X = hDIREND, Y,A = PTR to S.DIRENT
*  CS : A = EC, A = 0 : no more entry
*--------------------------------------
K.READDIRA.hMem		.BS 1
K.READDIRA.hDIRENT	.BS 1
K.READDIRA.BufSize	.BS 2
K.READDIRA.EL		.BS 1
K.READDIRA.EBP		.BS 1
K.READDIRA.EC		.BS 2
K.READDIRA.ECIB		.BS 1
K.READDIRA.EC2Return	.BS 1
*--------------------------------------
K.READDIRA		jsr K.PFTCheckDirA
				jsr K.GetMemPtrA
				>STYA ZPQuickPtr1
				
				ldy #S.DIR.F
				lda (ZPQuickPtr1),y
				and #S.DIR.F.NOMORE
				bne .9
				
				ldy #S.DIR.PRODOS.REF
				lda (ZPQuickPtr1),y
				beq K.READDIRA.ROOT
				jmp K.READDIRA.DIR
				
.9				lda #0
				sec						CS,A=0 no more entry
				rts
*--------------------------------------
K.READDIRA.ROOT	stz MLICALL.PARAMS+1	All Volumes
				
				>PUSHWI 256				Get a 256 bytes buffer for ONLINE call...
				>PUSHBI 0
				jsr K.GetMem
				bcs .99
				stx K.READDIRA.hMem
				
				>STYA MLICALL.PARAMS+2
				>STYA ZPQuickPtr2		For PASS #1 & #2
				>MLICALL MLIONLINE
				bcc .10
				
.98				jsr K.READDIRA.CLN
				sec
.99				rts					
* pass #1 compute BufSize.....				
.10				lda #1					+1 for Ending 0
				sta	K.READDIRA.BufSize
				stz K.READDIRA.BufSize+1
				
				stz K.READDIRA.EC
				
				ldy #0
				
.1				lda (ZPQuickPtr2),y
				and #$0F
				beq .2
				
				inc K.READDIRA.EC		increase entry count
				
				sec						Add Filelen +1
				adc #S.STAT				will ends with CC
				adc K.READDIRA.BufSize
				sta K.READDIRA.BufSize
				bcc .2
				inc K.READDIRA.BufSize+1
								
.2				tya
				clc
				adc #16
				tay
				bcc .1					loop until 256 bytes scanned
				
* pass #2 Fill Buffer...
				jsr K.READDIRA.GetBuf
				bcs .98
				
.3				lda (ZPQuickPtr2)
				and #$0F
				beq .88

				tax
				
				>LDYAI ZPQuickPtr4		Store actual PTR for MLIGETFILEINFO
				>STYA MLICALL.PARAMS+1
				
				txa
				inc
				jsr K.READDIRA.AddToBuf
				lda #'/'
				jsr K.READDIRA.AddToBuf
				
				ldy #1
				
.4				lda (ZPQuickPtr2),y
				jsr K.READDIRA.AddToBuf
				iny
				dex
				bne .4
				
				>MLICALL MLIGETFILEINFO
				bcs .80
				

				
.80				jsr K.READDIRA.ADDSTAT
				
.88				lda ZPQuickPtr2
				clc
				adc #16
				sta ZPQuickPtr2
				bcc .89
				inc ZPQuickPtr2+1
.89				dec K.READDIRA.EC
				bne .3

*				lda #0						done by S.MEM.F.INIT0
*				sta (ZPQuickPtr4)			Ending 0
				
				ldy #S.DIR.F
				lda #S.DIR.F.NOMORE
				sta (ZPQuickPtr1),y
				
				jsr K.READDIRA.CLN		Discard ONLINE BUFFER
				
				lda K.READDIRA.hDIRENT
				tax
				jmp K.GetMemPtrA
*--------------------------------------
K.READDIRA.DIR  ldy #S.DIR.PRODOS.REF
				lda (ZPQuickPtr1),y
				sta MLICALL.PARAMS+1

				>PUSHWI 512				Get a 512 bytes buffer for reading dir...
				>PUSHBI 0
				jsr K.GetMem
				bcs .99
				stx K.READDIRA.hMem
				
				>STYA MLICALL.PARAMS+2	For reading
				
				pha
				tya
*				clc						CC from  K.GetMem
				adc #4					Skip 4 bytes linked list		
				sta ZPQuickPtr2			PTR to Buffer for PASS #1
				sta ZPQuickPtr3			PTR to Buffer for PASS #2
				
				pla
				adc #0
				sta ZPQuickPtr2+1		PTR to Buffer for PASS #1
				sta ZPQuickPtr3+1		PTR to Buffer for PASS #2
				
				>LDYAI 512
				>STYA MLICALL.PARAMS+4
				>MLICALL MLIREAD		Read A block from directory
				bcs .98
				
				ldy #S.DIR.PRODOS.EL	Check if first run....
				lda (ZPQuickPtr1),y
				bne .2					no, we have all we need....
				
				ldy #$1f+3
				ldx #3
				
.1				lda (ZPQuickPtr2),y		Get K.READDIRA.EL....	From Block
				sta K.READDIRA.EL,x
				dey
				dex
				bpl .1
				bra .4

.98				jsr K.READDIRA.CLN
				sec
.99				rts
				
.2				ldy #S.DIR.PRODOS.EL+3
				ldx #3

.3				lda (ZPQuickPtr1),y		get this session parameters from S.DIR
				sta K.READDIRA.EL,x
				dey
				dex
				bpl .3
				
.4				ldx K.READDIRA.EC
				cpx K.READDIRA.EBP

				lda K.READDIRA.EC+1
				sbc #0
				bcc	.5					We have less than EPB to read
				ldx K.READDIRA.EBP
				
.5				stx K.READDIRA.ECIB
				stz K.READDIRA.EC2Return

				lda #1					For Ending 0
				sta K.READDIRA.BufSize
				stz K.READDIRA.BufSize+1
				
* pass #1 compute BufSize.....	
K.READDIRA.DIR1	lda (ZPQuickPtr2)		X = EntryCount In This Block
				beq .7					Free slot....goto next
				
				tay						save LEN
				
				and #$F0				get storage_type
				cmp #$F0				Volume header ?
				beq .1
				
				cmp #$E0				directory header ?
				beq .2
				
				inc K.READDIRA.EC2Return	regular DIR or File....
				
				tya
				and #$F					get filename len
				sec						add "#<filename>" + S.STAT
				
				adc #S.STAT
				.HS 2C					bit abs
				
.1				lda #2+S.STAT			add "1." string + S.STAT
				.HS 2C					bit abs
				
.2				lda #2+S.STAT+3+S.STAT	add "1." + S.STAT + "2.." + S.STAT...

				clc
				adc K.READDIRA.BufSize
				sta K.READDIRA.BufSize
				bcc .7
				inc K.READDIRA.BufSize+1
				
.7				lda ZPQuickPtr2
				clc
				adc K.READDIRA.EL
				sta ZPQuickPtr2
				bcc .8
				inc ZPQuickPtr2+1
				
.8				dex
				bne K.READDIRA.DIR1
				
* pass #2 Fill Buffer...
K.READDIRA.DIR2	jsr K.READDIRA.GetBuf
				bcs .98
				
				ldy #S.DIR.PRODOS.EL	Check if first run....
				lda (ZPQuickPtr1),y
				bne .73
				
				lda (ZPQuickPtr3)
				and #$F0
				cmp #$F0				Vol Header ?
				bne .72
				jsr K.READDIRA.ADD.
				bra .78
				
.72				cmp #$E0				Dir Header ?
				bne .73
				jsr K.READDIRA.ADD.
				jsr K.READDIRA.ADD..
				bra .78
				
.73				lda K.READDIRA.EC
				sec
				sbc #1
				sta K.READDIRA.EC
				bcs .74
				
				lda K.READDIRA.EC+1
				sbc #0
				sta K.READDIRA.EC+1		CC, we reached $ffff
				bcc .80					no more file to list...
				
.74				lda (ZPQuickPtr3)
				beq .78

				and #$F0
				cmp #$D0					Directory ?
				bne .75
				jsr K.READDIRA.ADDD
				bra .78
				
.75				jsr K.READDIRA.ADDF

.78				lda ZPQuickPtr3
				clc
				adc K.READDIRA.EL
				sta ZPQuickPtr3
				bcc .79
				inc ZPQuickPtr3+1	

.79				dec K.READDIRA.ECIB
				bne .72
				
.80				
*				lda #0					S.MEM.F.INIT0 already did this
*				sta (ZPQuickPtr4)		Ending 0

				ldx #3
				ldy #S.DIR.PRODOS.EL+3
				
.8				lda K.READDIRA.EL,x		Store back this session prameters to S.DIR
				sta (ZPQuickPtr1),y
				dey
				dex
				bpl .8
				
				jsr K.READDIRA.CLN		Discard READBUFFER
				
				lda K.READDIRA.hDIRENT
				tax
				jmp K.GetMemPtrA
				
.98				jsr K.READDIRA.CLN
				sec
				rts
*--------------------------------------
K.READDIRA.CLN	pha
				lda K.READDIRA.hMem
				jsr K.FreeMemA
				pla
				rts			
*--------------------------------------
K.READDIRA.GetBuf
				>PUSHW K.READDIRA.BufSize			Get a BufSize bytes buffer for storing results
				>PUSHBI S.MEM.F.INIT0	make sure 0 filled
				jsr K.GetMem
				bcs .9
				stx K.READDIRA.hDIRENT
				>STYA ZPQuickPtr4
.9				rts
*--------------------------------------
K.READDIRA.ADD. lda #1
				jsr K.READDIRA.AddToBuf
				lda #'.'				filename="1."
				jsr K.READDIRA.AddToBuf
				
				jsr K.READDIRA.ClrStat
				
				lda #$0F
				sta KrnBuf256+S.STAT.TYPE
				
				ldy #$25				total_blocks
				lda (ZPQuickPtr3),y
				sta KrnBuf256+S.STAT.BLOCKS
				iny
				lda (ZPQuickPtr3),y
				sta KrnBuf256+S.STAT.BLOCKS+1
				
				bra K.READDIRA.ADDSTAT
*--------------------------------------
K.READDIRA.ADD..
				lda #2
				jsr K.READDIRA.AddToBuf
				lda #'.'				filename="2.."
				jsr K.READDIRA.AddToBuf
				jsr K.READDIRA.AddToBuf

				jsr K.READDIRA.ClrStat

				lda #$0F
				sta KrnBuf256+S.STAT.TYPE

				bra K.READDIRA.ADDSTAT
*--------------------------------------
K.READDIRA.ADDD	jsr K.READDIRA.AddFNToBuf

				jsr K.READDIRA.ClrStat

				lda #$0F
				sta KrnBuf256+S.STAT.TYPE

				bra K.READDIRA.ADDSTAT
*--------------------------------------
K.READDIRA.ADDF jsr K.READDIRA.AddFNToBuf

				jsr K.READDIRA.ClrStat

				ldy #$10				type
				lda (ZPQuickPtr3),y
				sta KrnBuf256+S.STAT.TYPE

				ldy #$1F				auxtype
				lda (ZPQuickPtr3),y
				sta KrnBuf256+S.STAT.AUXTYPE
				iny
				lda (ZPQuickPtr3),y
				sta KrnBuf256+S.STAT.AUXTYPE+1

*--------------------------------------
K.READDIRA.AddStat
				ldy #S.STAT-1
				
.1				lda KrnBuf256,y
				sta (ZPQuickPtr4),y
				dey
				bpl .1
				
				lda ZPQuickPtr4
				clc
				adc #S.STAT
				sta ZPQuickPtr4
				bcc .8
				inc ZPQuickPtr4+1
.8				rts
*--------------------------------------
K.READDIRA.ClrStat
				ldx #S.STAT-1
				
.1				stz KrnBuf256,x
				dey
				bpl .1
				rts
*--------------------------------------
K.READDIRA.AddFNToBuf
				lda (ZPQuickPtr3)
				and #$0F				get filename len
				tax
				jsr K.READDIRA.AddToBuf
				
				ldy #1
				
.1				lda (ZPQuickPtr3),y			
				jsr K.READDIRA.AddToBuf
				iny
				dex
				bne .1
				rts
*--------------------------------------
K.READDIRA.AddToBuf
				sta (ZPQuickPtr4)
				inc ZPQuickPtr4
				bne .8
				inc ZPQuickPtr4+1
.8				rts
*--------------------------------------
				ldy #S.STAT.BLKSIZE+1
				lda #2						Block size is $200 for ProDOS
				sta (ZPQuickPtr3),y
*--------------------------------------
* In : 
*  A = hDIR
*--------------------------------------
K.CLOSEDIRA		jsr K.PFTCheckDirA
				pha
				jsr K.GetMemPtrA
				>STYA ZPQuickPtr1
				
K.CLOSEDIRA.1	ldy #S.DIR.PRODOS.REF
				lda (ZPQuickPtr1),y
				beq .1
				sta MLICALL.PARAMS+1
				>MLICALL MLICLOSE
				
.1				ldy #S.DIR.PRODOS.IOBUF				
				lda (ZPQuickPtr1),y
				beq .2
				jsr K.FreeMemA
				
.2				pla
				jsr K.FreeMemA
				clc
				rts
*--------------------------------------
K.MKDIRYA		jsr K.PFTCheckPathYA
				>STYA MLICALL.PARAMS+1
				lda #S.FILEINFO.ACCESS.FULL
				sta MLICALL.PARAMS+S.FILEINFO.ACCESS
				lda #S.FILEINFO.TYPE.DIR
				sta MLICALL.PARAMS+S.FILEINFO.TYPE
				lda #S.FILEINFO.STORETYPE.DIR
				sta MLICALL.PARAMS+S.FILEINFO.STORETYPE	
				>MLICALL MLICREATE
				rts
*--------------------------------------
MAN
SAVE SYS/KERNEL.S.DIR
LOAD SYS/KERNEL.S
ASM