mirror of
https://github.com/A2osX/A2osX.git
synced 2024-11-03 12:06:05 +00:00
510 lines
11 KiB
Plaintext
510 lines
11 KiB
Plaintext
NEW
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AUTO 3,1
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*/--------------------------------------
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* # OpenDir
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* ## C
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* `int hDIR opendir (const char * dirpath);`
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* ## ASM
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* `>LDYA dirpath`
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* `>SYSCALL opendir`
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* ## RETURN VALUE
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* CC : success
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* A = hDIR
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* CS : error
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* A = EC
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*\--------------------------------------
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K.OpenDir jsr PFT.CheckPathYA
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bcs K.ReadDir.RTS
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ldx #1
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jsr IO.MkFD
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bcs K.ReadDir.RTS
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lda K.Buf256+1 One char ("/") ?
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beq .8 No, Go open dir....
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>MLICALL MLIGETFILEINFO
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bcs .98 file/dir does not exists....quit
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lda K.MLI.PARAMS+4
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cmp #$0F Directory ?
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bne .98
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jsr IO.MLI.OPEN
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bcs .98
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.8 lda IO.hFD
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jsr STDIO.NewHFile
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bcc K.ReadDir.RTS
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.98 jmp IO.OPEN.ERR
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*/--------------------------------------
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* # ReadDir
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* ## C
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* `int readdir (int hDIR, S.DIRENT * dirent);`
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* ## ASM
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* `>PUSHW dirent`
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* `lda hDIR`
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* `>SYSCALL readdir`
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* ## RETURN VALUE
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* CC : success
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* X = hDIRENT
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* Y,A = PTR to S.DIRENT
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* CS : error
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* A = EC
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* note : A = 0 means no more entry
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*\--------------------------------------
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.DUMMY
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.OR ZPTMP 8 Bytes
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K.ReadDir.hMem .BS 1
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K.ReadDir.BufSize .BS 2
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K.ReadDir.ECIB .BS 1
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K.ReadDir.EL .BS 1
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K.ReadDir.EPB .BS 1
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K.ReadDir.EC .BS 2
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.ED
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*--------------------------------------
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K.ReadDir jsr PFT.CheckNodeA
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bcs K.ReadDir.RTS
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ldy #S.FD.REG.REF
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lda (pFD),y
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beq K.ReadDir.ROOT
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jmp K.ReadDir.DIR
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K.ReadDir.NoMore
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lda #MLI.E.EOF
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sec
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K.ReadDir.RTS rts
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*--------------------------------------
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K.ReadDir.ROOT
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ldy #S.FD.DIR.FC did we already returned something ?
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lda (pFD),y
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bne K.ReadDir.NoMore
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stz K.MLI.PARAMS+1 All Volumes
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>LDYAI K.Buf256
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>STYA K.MLI.PARAMS+2
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>STYA ZPPtr2
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>MLICALL MLIONLINE
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bcs K.ReadDir.RTS
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* pass #1 compute BufSize.....
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lda #1 +1 for Ending 0
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sta K.ReadDir.BufSize
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stz K.ReadDir.BufSize+1
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stz K.ReadDir.EC
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ldy #0
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.1 lda (ZPPtr2),y
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and #$0F
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beq .2
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inc K.ReadDir.EC increase entry count
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sec Add Filelen +1
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adc #S.STAT will ends with CC
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adc K.ReadDir.BufSize
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sta K.ReadDir.BufSize
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bcc .2
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inc K.ReadDir.BufSize+1
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.2
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tya
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clc
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adc #16
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tay
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bcc .1 loop until 256 bytes scanned
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* pass #2 Fill Buffer...
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jsr K.ReadDir.GetBuf
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bcs K.ReadDir.RTS
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.3 lda (ZPPtr2)
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and #$0F
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beq .88
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tax
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inc
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sta K.MLI.PATH
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lda #'/'
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sta K.MLI.PATH+1
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ldy #1
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.4 lda (ZPPtr2),y
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sta K.MLI.PATH+1,y
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jsr K.ReadDir.AddToBuf
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iny
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dex
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bne .4
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txa Add ending 0 for C String
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jsr K.ReadDir.AddToBuf
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jsr K.ReadDir.ClrStat
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lda (ZPPtr2)
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asl DRIVE in Carry
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pha
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lda #0
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rol
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inc
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sta K.S.STAT+S.STAT.P.DRIVE
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pla
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lsr CC
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lsr
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lsr
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lsr
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lsr
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sta K.S.STAT+S.STAT.P.SLOT
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>LDYAI K.MLI.PATH
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>STYA K.MLI.PARAMS+1
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>MLICALL MLIGETFILEINFO
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sta K.S.STAT+S.STAT.P.DEVSTATUS
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bcs .80
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>LDYA K.MLI.PARAMS+5 AUXTYPE=TOTAL BLOCKS
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>STYA K.S.STAT+S.STAT.P.DEVBLOCKS
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>LDYA K.MLI.PARAMS+8
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>STYA K.S.STAT+S.STAT.BLOCKS
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.80 jsr K.ReadDir.ADDSTAT
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dec K.ReadDir.EC
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beq .5
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.88 lda ZPPtr2
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clc
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adc #16
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sta ZPPtr2
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bcc .3
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inc ZPPtr2+1
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bra .3
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* lda #0 done by S.MEM.F.INIT0
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* sta (ZPPtr4) Ending 0
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.5 ldy #S.FD.DIR.FC
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lda #16
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sta (pFD),y Flag that we returned somthing for next time
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jmp K.ReadDir.EXIT
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*--------------------------------------
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K.ReadDir.DIR sta K.MLI.PARAMS+1 A=#S.DIR.PRODOS.REF
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>LDYAI 512 Get a 512 bytes buffer for reading dir...
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jsr K.GetMem
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bcs .99
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stx K.ReadDir.hMem
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>STYA K.MLI.PARAMS+2 For reading
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pha
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tya
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* clc CC from K.GetMem
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adc #4 Skip 4 bytes linked list
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sta ZPPtr2 PTR to Buffer for PASS #1
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sta ZPPtr3 PTR to Buffer for PASS #2
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pla
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adc #0
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sta ZPPtr2+1 PTR to Buffer for PASS #1
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sta ZPPtr3+1 PTR to Buffer for PASS #2
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>LDYAI 512
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>STYA K.MLI.PARAMS+4
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>MLICALL MLIREAD Read A block from directory
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bcs .98
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ldy #S.FD.DIR.EL Check if first run....
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lda (pFD),y
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bne .2 no, we have all we need....
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ldy #$1f+3
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ldx #3
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.1 lda (ZPPtr2),y Get K.ReadDir.EL.... From Block
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sta K.ReadDir.EL,x
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dey
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dex
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bpl .1
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inc K.ReadDir.EC Add one to EC because we include VOL/DIR Header
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bne .4
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inc K.ReadDir.EC+1 ...and ProDOS does NOT include header entry in EC
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bra .4
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.98 jsr K.ReadDir.CLN
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sec
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.99 rts
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.2 ldy #S.FD.DIR.EL+3
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ldx #3
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.3 lda (pFD),y get this session parameters from S.DIR
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sta K.ReadDir.EL,x
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dey
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dex
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bpl .3
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.4 lda K.ReadDir.EC
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eor #$ff
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tax
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lda K.ReadDir.EC+1
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eor #$ff
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tay
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inx Any entry remaining ?
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bne .5
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iny
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beq .98 no...exit
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* pass #1 compute BufSize...
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.5 lda K.ReadDir.EPB
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sta K.ReadDir.ECIB
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lda #1 For Ending 0
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sta K.ReadDir.BufSize
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stz K.ReadDir.BufSize+1
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K.ReadDir.DIR1 lda (ZPPtr2) X = EntryCount In This Block
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beq .7 Free slot....goto next
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and #$F0 get storage_type
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cmp #$F0 Volume header ?
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beq .1
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cmp #$E0 directory header ?
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beq .2
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lda (ZPPtr2) regular DIR or File, get LEN
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and #$F compute filename len
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sec add "#<filename>" + S.STAT
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adc #S.STAT
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.HS 2C bit abs
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.1 lda #2+S.STAT add "1." string + S.STAT
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.HS 2C bit abs
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.2 lda #2+S.STAT+3+S.STAT add "1." + S.STAT + "2.." + S.STAT...
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clc
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adc K.ReadDir.BufSize
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sta K.ReadDir.BufSize
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bcc .3
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inc K.ReadDir.BufSize+1
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.3 inx
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bne .7
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iny
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bra K.ReadDir.DIR2 we reached last entry in whole DIR
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.7 lda ZPPtr2
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clc
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adc K.ReadDir.EL
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sta ZPPtr2
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bcc .8
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inc ZPPtr2+1
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.8 dec K.ReadDir.ECIB
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bne K.ReadDir.DIR1
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* pass #2 Fill Buffer...(ZPPtr1 & Ptr2 can now be trashed)
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K.ReadDir.DIR2 jsr K.ReadDir.GetBuf
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bcs .9
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lda K.ReadDir.EPB
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sta K.ReadDir.ECIB
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.1 lda (ZPPtr3)
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beq .7 Empty slot, skip
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and #$F0
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cmp #$F0 Vol Header ?
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bne .2
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jsr K.ReadDir.ADD.
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bra .6
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.2 cmp #$E0 Dir Header ?
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bne .3
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jsr K.ReadDir.ADD.
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jsr K.ReadDir.ADD..
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bra .6
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.3 jsr K.ReadDir.AddFNToBuf
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jsr K.ReadDir.ClrStat
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lda (ZPPtr3)
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and #$F0
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cmp #$D0 Directory ?
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bne .5
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jsr K.ReadDir.ADDD
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bra .6
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.5 jsr K.ReadDir.ADDF
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.6 lda K.ReadDir.EC decrease global counter...
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sec
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sbc #1
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sta K.ReadDir.EC
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lda K.ReadDir.EC+1
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sbc #0
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sta K.ReadDir.EC+1
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ora K.ReadDir.EC
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beq .8 0! no more files in DIR
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.7 dec K.ReadDir.ECIB 0! no more file in block
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beq .8
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lda ZPPtr3
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clc
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adc K.ReadDir.EL
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sta ZPPtr3
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bcc .1
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inc ZPPtr3+1
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bra .1
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.9 jsr K.ReadDir.CLN
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sec
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rts
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.8
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* lda #0 S.MEM.F.INIT0 already did this
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* sta (ZPPtr4) Ending 0
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ldx #3
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ldy #S.FD.DIR.EL+3
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.81 lda K.ReadDir.EL,x Store back this session prameters to S.DIR
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sta (pFD),y
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dey
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dex
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bpl .81
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jsr K.ReadDir.CLN Discard READBUFFER
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K.ReadDir.EXIT
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ldx #$ff Self Modified : hDIRENT
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txa
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jmp K.GetMemPtr
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*--------------------------------------
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K.ReadDir.CLN pha
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lda K.ReadDir.hMem
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jsr K.FreeMem
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pla
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rts
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*--------------------------------------
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K.ReadDir.GetBuf
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>LDYA K.ReadDir.BufSize Get a BufSize bytes buffer for storing results
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jsr K.GetMem0 make sure 0 filled
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bcs .9
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stx K.ReadDir.EXIT+1
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>STYA ZPPtr4
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.9 rts
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*--------------------------------------
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K.ReadDir.ADD. ldx #1 filename="1."
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.HS 2C bit abs
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K.ReadDir.ADD..
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ldx #2 filename="2.."
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lda #'.'
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.1 jsr K.ReadDir.AddToBuf Add X dot(s)
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dex
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bne .1
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txa
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jsr K.ReadDir.AddToBuf Add Ending 0
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jsr K.ReadDir.ClrStat
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* ldy #$25 total_blocks
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* lda (ZPPtr3),y
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* sta K.S.STAT+S.STAT.BLOCKS
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* iny
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* lda (ZPPtr3),y
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* sta K.S.STAT+S.STAT.BLOCKS+1
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*--------------------------------------
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K.ReadDir.ADDD
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lda #$0F
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sta K.S.STAT+S.STAT.P.TYPE
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lda /S.STAT.MODE.DIR
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sta K.S.STAT+S.STAT.MODE+1
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bra K.ReadDir.AddAccess
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*--------------------------------------
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K.ReadDir.ADDF
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lda /S.STAT.MODE.REG
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sta K.S.STAT+S.STAT.MODE+1
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ldx #ADDF.DST-ADDF.SRC
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.1 ldy ADDF.SRC-1,x
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lda (ZPPtr3),y
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ldy ADDF.DST-1,x
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sta K.S.STAT,y
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dex
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bne .1
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*--------------------------------------
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K.ReadDir.AddAccess
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ldy #$1E ProDOS Access
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lda (ZPPtr3),y
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jsr STAT.Access2Mode
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sta K.S.STAT+S.STAT.MODE
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tya
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ora K.S.STAT+S.STAT.MODE+1 preserve DIR
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sta K.S.STAT+S.STAT.MODE+1
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*--------------------------------------
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K.ReadDir.AddTime
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>PUSHWI K.S.STAT+S.STAT.CTIME
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lda #$18 creation Date/time
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jsr K.ReadDir.ConvertTime
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>PUSHWI K.S.STAT+S.STAT.MTIME
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lda #$21 mod Date/time
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jsr K.ReadDir.ConvertTime
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*--------------------------------------
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K.ReadDir.AddStat
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ldy #S.STAT-1
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.1 lda K.S.STAT,y
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sta (ZPPtr4),y
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dey
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bpl .1
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lda ZPPtr4
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clc
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adc #S.STAT
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sta ZPPtr4
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bcc .8
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inc ZPPtr4+1
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.8 rts
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*--------------------------------------
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ADDF.SRC .HS 1013141516171f20
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ADDF.DST .DA #S.STAT.P.TYPE
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.DA #S.STAT.BLOCKS,#S.STAT.BLOCKS+1
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.DA #S.STAT.SIZE,#S.STAT.SIZE+1,#S.STAT.SIZE+2
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.DA #S.STAT.P.AUXTYPE,#S.STAT.P.AUXTYPE+1
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*--------------------------------------
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K.ReadDir.ClrStat
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ldx #S.STAT-1
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.1 stz K.S.STAT,x
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dex
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bpl .1
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rts
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*--------------------------------------
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K.ReadDir.AddFNToBuf
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ldy #$1C version/min_version for lowercase bitmap
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lda (ZPPtr3),y check bxxxxxxx.xxxxxxxx...
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bpl .7 not set, no lowercase bitmap present
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pha
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iny
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lda (ZPPtr3),y
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pha
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lda #$1
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sta .2+1
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ldy #15
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.1 pla
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.2 bit #$ff
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pha
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beq .3
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lda (ZPPtr3),y
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ora #$20 convert a-z to A-Z adding from $4x to $6x
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sta (ZPPtr3),y
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.3 asl .2+1
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bne .4
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rol .2+1
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pla
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.4 dey
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bne .1
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pla
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.7 lda (ZPPtr3)
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and #$0F get filename len
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tax
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ldy #1
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.8 lda (ZPPtr3),y
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jsr K.ReadDir.AddToBuf
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iny
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dex
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bne .8
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txa
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* jsr K.ReadDir.AddToBuf
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* rts
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*--------------------------------------
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K.ReadDir.AddToBuf
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sta (ZPPtr4)
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inc ZPPtr4
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bne .8
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inc ZPPtr4+1
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.8 rts
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*--------------------------------------
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K.ReadDir.ConvertTime
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clc
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adc ZPPtr3
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tay
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lda ZPPtr3+1
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adc #0
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ldx #SYS.PTime2Time BANK2
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jmp K.SYSCALL2
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*/-------------------------------------
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* # CloseDir
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* ## C
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* `void closedir(hDIR);`
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* ## ASM
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* `lda hDIR`
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* `>SYSCALL closedir`
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* ## RETURN VALUE
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* none, always succeed.
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*\-------------------------------------
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*K.CloseDir .EQ K.FClose
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*--------------------------------------
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MAN
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SAVE USR/SRC/SYS/KERNEL.S.DIRENT
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LOAD USR/SRC/SYS/KERNEL.S
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ASM
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