A2osX/BIN/X.FILEENUM.S.txt

PR#3
PREFIX /A2OSX.SRC
NEW
INC 1
AUTO 6
				.LIST OFF	
*--------------------------------------
* Uses: (pData)
*  hDIRs			.BS MAX.RECURSE+1
*  hDIRENTs			.BS MAX.RECURSE+1
*  hBasePath		.BS 1
*--------------------------------------
InitSrcDirPatYA	ldx #$80
				.HS 2C					bit abs
InitSrcDirYA	ldx #0
				stx .11+1
				>SYSCALL GetFullPathYA
				bcc .10
				rts
				
.10				stx .90+1
				>STYA ZPPtr1
				
				lda (ZPPtr1)
				cmp #1
				beq .5					we have '/'
				
.11				lda #$ff				Self Modified
				bmi .1					Force using pattern
				
				>PUSHW L.STAT
				>PUSHW ZPPtr1
				>SYSCALL STAT
				
				bcs .1					File/DIR does not exists, go extract pattern
				
				lda STAT+S.STAT.PRODOS.TYPE
				cmp #$0f
				beq .5					TYPE=DIR, do not extract wildcard 
				
.1				lda (ZPPtr1)
				tay
				
.2				lda	(ZPPtr1),y			search backward for a /
				cmp #'/'
				beq .3
				dey
				bne .2
				
.3				tya
				cmp (ZPPtr1)
				beq .5					Make sure at least one char
				
				ldx #0
				phy						save / pos to trunk string later
				
.4				iny
				inx
				lda (ZPPtr1),y
				sta UsrBuf256,x
				tya
				cmp (ZPPtr1)
				bne .4
				
				pla						get back / pos
				sta (ZPPtr1)			trunk it for Opendir
				
				stx UsrBuf256
				>LDYAI UsrBuf256
				>SYSCALL NewPstrYA
				bcs .9
				txa
				ldy #hFilter
				sta (pData),y				
				
.5				>PUSHWI 256
				>PUSHBI 0
				>SYSCALL GetMem		Get a 256 buffer to store BasePath
				bcs .9
				
				>STYA ZPPtr2
				txa
				ldy #hBasePath
				sta (pData),y
				
				lda (ZPPtr1)
				sta (ZPPtr2)
				tay
				
.6				lda (ZPPtr1),y
				sta (ZPPtr2),y
				dey
				bne .6
				
				>LDYA ZPPtr1
				>SYSCALL OpenDirYA
				
				bcs .9
				
				ldy #hDIRs
				sta (pData),y			set hDIRs[0] = Src Hdir
				
				ldy #index
				lda #1
				sta (pData),y			index=hDIRs[0]
				
				jsr .9					Cleanup
				
				clc
				rts
			
.9				pha
.90				lda #$ff				self modified
				>SYSCALL FreeMemA
				pla
				sec
InitSrcDirYA.RTS
				rts	
*--------------------------------------
GetNextEntry	ldy #index
				lda (pData),y
				tax						keep index for later
				clc
				adc #hDIRENTs-1
				tay
				lda (pData),y
				bne .1					we have a buffer to scan
				
				txa						get back index....
				clc
				adc #hDIRs-1
				tay
				lda (pData),y
				
				>SYSCALL ReadDirA
				bcs InitSrcDirYA.RTS
				>STYA ZPPtr1
				
				ldy #index
				lda (pData),y
				pha						save index for later
				clc
				adc #hDIRENTs-1
				tay
				txa						get hDIRENT in A
				sta (pData),y
				
				pla						get back index
				asl
				adc #oDIRENTs-1			and reset offset for this buffer
				tay
				lda #0
				sta (pData),y
				iny
				sta (pData),y

				bra .2
				
.1				>SYSCALL GetMemPtrA
				>STYA ZPPtr1		
				
				ldy #index
				lda (pData),y
				asl
				adc #oDIRENTs-1			CC from ASL
				tay
				
				lda ZPPtr1
*				clc						from ADC
				adc (pData),y
				sta ZPPtr1
				
				lda ZPPtr1+1
				iny
				adc (pData),y
				sta ZPPtr1+1
				
.2				lda (ZPPtr1)			first/next DIRENT
				bne .8

				sta (pData),y			reset offset...
				dey
				sta (pData),y
				
				ldy #index
				lda (pData),y
				clc
				adc #hDIRENTs-1
				tay
				lda (pData),y
				pha
				lda #0
				sta (pData),y			reset hDIRENT
				pla
				>SYSCALL FreeMemA		discard hDIRENT
				
				bra GetNextEntry		...startover

.8				ldy #index
				lda (pData),y
				asl
				adc #oDIRENTs-1
				tay
				
				lda (ZPPtr1)			Add file len+1...
				sec
				adc #S.STAT				+S.STAT
				
*				clc						from ADC				
				adc (pData),y			Make oDIRENTs[i] point to next DIRENT
				sta (pData),y
				iny
				lda (pData),y
				adc #0
				sta (pData),y
				
				lda ZPPtr1				set Ptr2=Ptr1+LEN-> S.STAT
				sec
				adc (ZPPtr1)
				sta ZPPtr2
				lda ZPPtr1+1
				adc #0
				sta ZPPtr2+1
				
				clc
				rts
*--------------------------------------
EnterSubDirYA	>STYA ZPPtr2			save SUBDIR for StrCat

				ldy #index
				lda (pData),y
				cmp #MAX.RECURSE
				beq .9

				ldy #hBasePath
				lda (pData),y
				>SYSCALL GetMemPtrA
				
				>STYA ZPPtr1			save full path
				
				>PUSHW ZPPtr2
				>PUSHW ZPPtr1
				>SYSCALL PStrCat

				lda (ZPPtr1)
				inc
				tay
				sta (ZPPtr1)
				lda #'/'
				sta (ZPPtr1),y
				
				>LDYA ZPPtr1
				>SYSCALL OpenDirYA

				bcs .9
				pha
				
				ldy #index
				lda (pData),y
				inc
				sta (pData),y
				tax
*				clc						from BCS
				adc #hDIRs-1
				tay
				pla
				sta (pData),y
				
				txa						make sure hDIRENTs[i] is closed
				adc #hDIRENTs-1
				tay
				lda #0
				sta (pData),y
				
.9				rts
*--------------------------------------
LeaveSubDir		ldy #index
				lda (pData),y
				beq .9
				clc
				adc #hDIRs-1
				tay
				lda (pData),y
				pha
				lda #0
				sta (pData),y
				pla
				>SYSCALL CloseDirA

				ldy #index
				lda (pData),y
				dec
				sta (pData),y
				bne .8
				
				ldy #hBasePath
				lda (pData),y
				>SYSCALL FreeMemA
.9				sec
				rts
				
.8				clc
				rts
*--------------------------------------
BasePath..		ldy #hBasePath
				lda (pData),y
				>SYSCALL GetMemPtrA
								
				>STYA ZPPtr1			save full path
				
				lda (ZPPtr1)			get len
				tay
				
.1				dey						At first run, discard ending /
				lda (ZPPtr1),y
				cmp #'/'
				bne .1
				
				tya
				sta (ZPPtr1)			cut DIR2/ from /dir1/DIR2/

				clc
				rts
*--------------------------------------
MAN
SAVE BIN/X.FILEENUM.S