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
*--------------------------------------
S.OPENDIRYA		jsr S.PFTCHECKPATHYA
				>STYA ZPQuickPtr2
				>STYA MLICALL.PARAMS+1	For MLIOPEN
				
				>PUSHWI S.DIR.PRODOS
				>PUSHBI S.MEM.F.INIT0
				jsr S.GetMem
				bcs .9
				
				>STYA ZPQuickPtr1
				stx 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 S.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 hDIR
				clc
				rts
				
.98				pha						save MLI error
				jsr S.CLOSEDIRA.1
				pla						get back MLI error				
				sec
.99				rts
*--------------------------------------				
hDIR			.BS 1				
*--------------------------------------
* In : 
*  A = hDIR
* Out : 
*  CC : X = hDIREND, Y,A = PTR to S.DIRENT
*  CS : A = EC, A = 0 : no more entry
*--------------------------------------
S.READDIRA		jsr S.PFTCHECKDIRA
				jsr S.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 S.READDIRA.ROOT
				jmp S.READDIRA.DIR
				
.9				lda #0
				sec						CS,A=0 no more entry
S.READDIRA.RTS	rts
				
S.READDIRA.ROOT	stz MLICALL.PARAMS+1	All Volumes
				>LDYAI KrnBuffer256
				>STYA MLICALL.PARAMS+2
				>STYA ZPQuickPtr2		For PASS #2
				>MLICALL MLIONLINE
				bcs S.READDIRA.RTS
				
				lda #1					+1 for Ending 0
				sta	BufSize
				stz BufSize+1
				
				ldy #0
				
.1				lda KrnBuffer256,y
				and #$0F
				beq .2
				
				sec						Add Filelen +1
				adc BufSize
				sta BufSize
				bcc .11
				inc BufSize+1

.11				lda #S.STAT
				adc BufSize
				sta BufSize
				bcc .12
				inc BufSize+1

.12				inx
								
.2				tya
				clc
				adc #16
				tay
				bcc .1					loop until 256 bytes scanned
				
				txa
				beq	S.READDIRA.RTS		A=0, CS no more DIRENT

				sta EntryCount
				
				>PUSHW BufSize
				>PUSHBI S.MEM.F.INIT0
				jsr S.GetMem
				bcs S.READDIRA.RTS
				stx hDIRENT
				>STYA ZPQuickPtr3
				>STYA ZPQuickPtr4
				
.3				lda (ZPQuickPtr2)
				and #$0F
				beq .88
				tay
				tax
				sta (ZPQuickPtr3)
				inc
				sta VolName			Build a string with leading / for GetFileInfo
				
.4				lda (ZPQuickPtr2),y
				sta (ZPQuickPtr3),y
				sta VolName+1,y
				dey
				bne .4
				lda #'/'
				sta VolName+1
				
				txa
				sec
				adc ZPQuickPtr3
				sta ZPQuickPtr3
				bcc .41
				inc ZPQuickPtr3+1
				
.41				>LDYAI VolName
				>STYA MLICALL.PARAMS+1
				>MLICALL MLIGETFILEINFO
				bcs .80
				
				lda MLICALL.PARAMS+S.FILEINFO.ACCESS
				cmp #S.FILEINFO.ACCESS.FULL
				bne .5
				
				lda #S.STAT.MODE.XO+S.STAT.MODE.WO+S.STAT.MODE.RO
				bra .6
				
.5				and #S.FILEINFO.ACCESS.R
				beq .6
				lda #S.STAT.MODE.XO+S.STAT.MODE.RO	
				
.6				ldy #S.STAT.MODE				
				sta (ZPQuickPtr3),y

				ldy #S.STAT.BLOCKS
				lda MLICALL.PARAMS+S.FILEINFO.AUXTYPE
				sta (ZPQuickPtr3),y
				iny
				lda MLICALL.PARAMS+S.FILEINFO.AUXTYPE
				sta (ZPQuickPtr3),y
				ldy #S.STAT.BLKSIZE+1
				lda #2						Block size is $200 for ProDOS
				sta (ZPQuickPtr3),y
				
.80				lda ZPQuickPtr3
				clc
				adc #S.STAT
				sta ZPQuickPtr3
				bcc .88
				inc ZPQuickPtr3+1
				
.88				lda ZPQuickPtr2
				clc
				adc #16
				sta ZPQuickPtr2
				bcc .89
				inc ZPQuickPtr2+1
.89				dec EntryCount
				bne .3

				lda #0
				sta (ZPQuickPtr3)			Ending 0
				
				ldy #S.DIR.F
				lda #S.DIR.F.NOMORE
				sta (ZPQuickPtr1),y
				
				ldx hDIRENT
				>LDYA ZPQuickPtr4
				clc
				rts

S.READDIRA.DIR
				ldx #3
				ldy #S.STAT.TYPE
				
.7				lda MLICALL.PARAMS+S.FILEINFO.TYPE,x
				sta (ZPQuickPtr3),y
				iny
				dex
				bne .7
				
				clc
				rts
*--------------------------------------
* In : 
*  A = hDIR
*--------------------------------------
S.CLOSEDIRA		jsr S.PFTCHECKDIRA
				sta hDIR
				jsr S.GetMemPtrA
				>STYA ZPQuickPtr1
				
S.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 S.FreeMemA
				
.2				lda hDIR
				jsr S.FreeMemA
				clc
				rts
*--------------------------------------
S.MKDIRYA		jsr S.PFTCHECKPATHYA
				>STYA MLICALL.PARAMS+1
				lda #$C3
				sta MLICALL.PARAMS+3	Access
				lda #$0F
				sta MLICALL.PARAMS+4	type=Directory
				lda #$0D				Storage=Linked List
				sta MLICALL.PARAMS+7	
				>MLICALL MLICREATE
				rts
*--------------------------------------
hONLINE			.BS 1
hDIRENT			.BS 1
BufSize			.BS 2
EntryCount		.BS 1
VolName			.BS 17
*--------------------------------------
MAN
SAVE SYS/KERNEL.S.DIR
LOAD SYS/KERNEL.S
ASM