mirror of
https://github.com/microsoft/MS-DOS.git
synced 2024-11-25 23:25:47 +00:00
526 lines
18 KiB
NASM
526 lines
18 KiB
NASM
TITLE COPYRPOC ;Procedures called by COPY
|
||
|
||
INCLUDE COMSW.ASM
|
||
|
||
.xlist
|
||
.xcref
|
||
INCLUDE DOSSYM.ASM
|
||
INCLUDE DEVSYM.ASM
|
||
INCLUDE COMSEG.ASM
|
||
.list
|
||
.cref
|
||
|
||
INCLUDE COMEQU.ASM
|
||
|
||
DATARES SEGMENT PUBLIC
|
||
DATARES ENDS
|
||
|
||
TRANDATA SEGMENT PUBLIC
|
||
|
||
EXTRN OVERWR:BYTE,FULDIR:BYTE,LOSTERR:BYTE
|
||
EXTRN DEVWMES:BYTE,INBDEV:BYTE,NOSPACE:BYTE
|
||
|
||
TRANDATA ENDS
|
||
|
||
TRANSPACE SEGMENT PUBLIC
|
||
|
||
EXTRN CFLAG:BYTE,NXTADD:WORD,DESTCLOSED:BYTE
|
||
EXTRN PLUS:BYTE,BINARY:BYTE,ASCII:BYTE,FILECNT:WORD
|
||
EXTRN WRITTEN:BYTE,CONCAT:BYTE,DESTBUF:BYTE,SRCBUF:BYTE
|
||
EXTRN SDIRBUF:BYTE,DIRBUF:BYTE,DESTFCB:BYTE,MELCOPY:BYTE
|
||
EXTRN FIRSTDEST:BYTE,DESTISDIR:BYTE,DESTSWITCH:WORD
|
||
EXTRN DESTTAIL:WORD,DESTINFO:BYTE,INEXACT:BYTE
|
||
EXTRN DESTVARS:BYTE,SRCINFO:BYTE,RDEOF:BYTE
|
||
EXTRN USERDIR1:BYTE,NOWRITE:BYTE
|
||
EXTRN SRCHAND:WORD,CPDATE:WORD,CPTIME:WORD
|
||
EXTRN SRCISDEV:BYTE,BYTCNT:WORD,TPA:WORD,TERMREAD:BYTE
|
||
EXTRN DESTHAND:WORD,DESTISDEV:BYTE,DIRCHAR:BYTE
|
||
|
||
TRANSPACE ENDS
|
||
|
||
TRANCODE SEGMENT PUBLIC BYTE
|
||
|
||
PUBLIC SEARCH,SEARCHNEXT,DOCOPY,CLOSEDEST,FLSHFIL,SETASC
|
||
PUBLIC BUILDNAME,COPERR
|
||
|
||
EXTRN PRINT:NEAR,BUILDPATH:NEAR,RESTUDIR1:NEAR
|
||
EXTRN COMPNAME:NEAR,ENDCOPY:NEAR
|
||
|
||
ASSUME CS:TRANGROUP,DS:TRANGROUP,ES:TRANGROUP,SS:NOTHING
|
||
|
||
|
||
SEARCHNEXT:
|
||
MOV AH,DIR_SEARCH_NEXT
|
||
TEST [SRCINFO],2
|
||
JNZ SEARCH ; Do serach-next if ambig
|
||
OR AH,AH ; Reset zero flag
|
||
return
|
||
SEARCH:
|
||
PUSH AX
|
||
MOV AH,SET_DMA
|
||
MOV DX,OFFSET TRANGROUP:DIRBUF
|
||
INT int_command ; Put result of search in DIRBUF
|
||
POP AX ; Restore search first/next command
|
||
MOV DX,FCB
|
||
INT int_command ; Do the search
|
||
OR AL,AL
|
||
return
|
||
|
||
DOCOPY:
|
||
mov [RDEOF],0 ; No EOF yet
|
||
mov dx,offset trangroup:SRCBUF
|
||
mov ax,OPEN SHL 8
|
||
INT int_command
|
||
retc ; If open fails, ignore
|
||
mov bx,ax ; Save handle
|
||
mov [SRCHAND],bx ; Save handle
|
||
mov ax,(FILE_TIMES SHL 8)
|
||
INT int_command
|
||
mov [CPDATE],dx ; Save DATE
|
||
mov [CPTIME],cx ; Save TIME
|
||
mov ax,(IOCTL SHL 8)
|
||
INT int_command ; Get device stuff
|
||
and dl,devid_ISDEV
|
||
mov [SRCISDEV],dl ; Set source info
|
||
jz COPYLP ; Source not a device
|
||
cmp [BINARY],0
|
||
jz COPYLP ; ASCII device OK
|
||
mov dx,offset trangroup:INBDEV ; Cannot do binary input
|
||
jmp COPERR
|
||
|
||
COPYLP:
|
||
mov bx,[SRCHAND]
|
||
mov cx,[BYTCNT]
|
||
mov dx,[NXTADD]
|
||
sub cx,dx ; Compute available space
|
||
jnz GOTROOM
|
||
call FLSHFIL
|
||
CMP [TERMREAD],0
|
||
JNZ CLOSESRC ; Give up
|
||
mov cx,[BYTCNT]
|
||
GOTROOM:
|
||
push ds
|
||
mov ds,[TPA]
|
||
ASSUME DS:NOTHING
|
||
mov ah,READ
|
||
INT int_command
|
||
pop ds
|
||
ASSUME DS:TRANGROUP
|
||
jc CLOSESRC ; Give up if error
|
||
mov cx,ax ; Get count
|
||
jcxz CLOSESRC ; No more to read
|
||
cmp [SRCISDEV],0
|
||
jnz NOTESTA ; Is a device, ASCII mode
|
||
cmp [ASCII],0
|
||
jz BINREAD
|
||
NOTESTA:
|
||
MOV DX,CX
|
||
MOV DI,[NXTADD]
|
||
MOV AL,1AH
|
||
PUSH ES
|
||
MOV ES,[TPA]
|
||
REPNE SCASB ; Scan for EOF
|
||
POP ES
|
||
JNZ USEALL
|
||
INC [RDEOF]
|
||
INC CX
|
||
USEALL:
|
||
SUB DX,CX
|
||
MOV CX,DX
|
||
BINREAD:
|
||
ADD CX,[NXTADD]
|
||
MOV [NXTADD],CX
|
||
CMP CX,[BYTCNT] ; Is buffer full?
|
||
JB TESTDEV ; If not, we may have found EOF
|
||
CALL FLSHFIL
|
||
CMP [TERMREAD],0
|
||
JNZ CLOSESRC ; Give up
|
||
JMP SHORT COPYLP
|
||
|
||
TESTDEV:
|
||
cmp [SRCISDEV],0
|
||
JZ CLOSESRC ; If file then EOF
|
||
CMP [RDEOF],0
|
||
JZ COPYLP ; On device, go till ^Z
|
||
CLOSESRC:
|
||
mov bx,[SRCHAND]
|
||
mov ah,CLOSE
|
||
INT int_command
|
||
return
|
||
|
||
CLOSEDEST:
|
||
cmp [DESTCLOSED],0
|
||
retnz ; Don't double close
|
||
MOV AL,BYTE PTR [DESTSWITCH]
|
||
CALL SETASC ; Check for B or A switch on destination
|
||
JZ BINCLOS
|
||
MOV BX,[NXTADD]
|
||
CMP BX,[BYTCNT] ; Is memory full?
|
||
JNZ PUTZ
|
||
call TRYFLUSH ; Make room for one lousy byte
|
||
jz NOCONC
|
||
CONCHNG: ; Concat flag changed on us
|
||
stc
|
||
return
|
||
NOCONC:
|
||
XOR BX,BX
|
||
PUTZ:
|
||
PUSH DS
|
||
MOV DS,[TPA]
|
||
MOV WORD PTR [BX],1AH ; Add End-of-file mark (Ctrl-Z)
|
||
POP DS
|
||
INC [NXTADD]
|
||
MOV [NOWRITE],0 ; Make sure our ^Z gets written
|
||
MOV AL,[WRITTEN]
|
||
XOR AH,AH
|
||
ADD AX,[NXTADD]
|
||
JC BINCLOS ; > 1
|
||
CMP AX,1
|
||
JZ FORGETIT ; WRITTEN = 0 NXTADD = 1 (the ^Z)
|
||
BINCLOS:
|
||
call TRYFLUSH
|
||
jnz CONCHNG
|
||
cmp [WRITTEN],0
|
||
jz FORGETIT ; Never wrote nothin
|
||
MOV BX,[DESTHAND]
|
||
MOV CX,[CPTIME]
|
||
MOV DX,[CPDATE]
|
||
CMP [INEXACT],0 ; Copy not exact?
|
||
JZ DODCLOSE ; If no, copy date & time
|
||
MOV AH,GET_TIME
|
||
INT int_command
|
||
SHL CL,1
|
||
SHL CL,1 ; Left justify min in CL
|
||
SHL CX,1
|
||
SHL CX,1
|
||
SHL CX,1 ; hours to high 5 bits, min to 5-10
|
||
SHR DH,1 ; Divide seconds by 2 (now 5 bits)
|
||
OR CL,DH ; And stick into low 5 bits of CX
|
||
PUSH CX ; Save packed time
|
||
MOV AH,GET_DATE
|
||
INT int_command
|
||
SUB CX,1980
|
||
XCHG CH,CL
|
||
SHL CX,1 ; Year to high 7 bits
|
||
SHL DH,1 ; Month to high 3 bits
|
||
SHL DH,1
|
||
SHL DH,1
|
||
SHL DH,1
|
||
SHL DH,1 ; Most sig bit of month in carry
|
||
ADC CH,0 ; Put that bit next to year
|
||
OR DL,DH ; Or low three of month into day
|
||
MOV DH,CH ; Get year and high bit of month
|
||
POP CX ; Get time back
|
||
DODCLOSE:
|
||
MOV AX,(FILE_TIMES SHL 8) OR 1
|
||
INT int_command ; Set date and time
|
||
MOV AH,CLOSE
|
||
INT int_command
|
||
INC [FILECNT]
|
||
INC [DESTCLOSED]
|
||
RET50:
|
||
CLC
|
||
return
|
||
|
||
FORGETIT:
|
||
MOV BX,[DESTHAND]
|
||
CALL DODCLOSE ; Close the dest
|
||
MOV DX,OFFSET TRANGROUP:DESTBUF
|
||
MOV AH,UNLINK
|
||
INT int_command ; And delete it
|
||
MOV [FILECNT],0 ; No files transferred
|
||
JMP RET50
|
||
|
||
TRYFLUSH:
|
||
mov al,[CONCAT]
|
||
push ax
|
||
call FLSHFIL
|
||
pop ax
|
||
cmp al,[CONCAT]
|
||
return
|
||
|
||
FLSHFIL:
|
||
; Write out any data remaining in memory.
|
||
; Inputs:
|
||
; [NXTADD] = No. of bytes to write
|
||
; [CFLAG] <>0 if file has been created
|
||
; Outputs:
|
||
; [NXTADD] = 0
|
||
|
||
MOV [TERMREAD],0
|
||
cmp [CFLAG],0
|
||
JZ NOTEXISTS
|
||
JMP EXISTS
|
||
NOTEXISTS:
|
||
call BUILDDEST ; Find out all about the destination
|
||
CALL COMPNAME ; Source and dest. the same?
|
||
JNZ PROCDEST ; If not, go ahead
|
||
CMP [SRCISDEV],0
|
||
JNZ PROCDEST ; Same name on device OK
|
||
CMP [CONCAT],0 ; Concatenation?
|
||
MOV DX,OFFSET TRANGROUP:OVERWR
|
||
JZ COPERRJ ; If not, overwrite error
|
||
MOV [NOWRITE],1 ; Flag not writting (just seeking)
|
||
PROCDEST:
|
||
mov ax,(OPEN SHL 8) OR 1
|
||
CMP [NOWRITE],0
|
||
JNZ DODESTOPEN ; Don't actually create if NOWRITE set
|
||
mov ah,CREAT
|
||
xor cx,cx
|
||
DODESTOPEN:
|
||
mov dx,offset trangroup:DESTBUF
|
||
INT int_command
|
||
MOV DX,OFFSET TRANGROUP:FULDIR
|
||
JC COPERRJ
|
||
mov [DESTHAND],ax ; Save handle
|
||
mov [CFLAG],1 ; Destination now exists
|
||
mov bx,ax
|
||
mov ax,(IOCTL SHL 8)
|
||
INT int_command ; Get device stuff
|
||
mov [DESTISDEV],dl ; Set dest info
|
||
test dl,devid_ISDEV
|
||
jz EXISTS ; Dest not a device
|
||
mov al,BYTE PTR [DESTSWITCH]
|
||
AND AL,ASWITCH+BSWITCH
|
||
JNZ TESTBOTH
|
||
MOV AL,[ASCII] ; Neither set, use current setting
|
||
OR AL,[BINARY]
|
||
JZ EXSETA ; Neither set, default to ASCII
|
||
TESTBOTH:
|
||
JPE EXISTS ; Both are set, ignore
|
||
test AL,BSWITCH
|
||
jz EXISTS ; Leave in cooked mode
|
||
mov ax,(IOCTL SHL 8) OR 1
|
||
xor dh,dh
|
||
or dl,devid_RAW
|
||
mov [DESTISDEV],dl ; New value
|
||
INT int_command ; Set device to RAW mode
|
||
jmp short EXISTS
|
||
|
||
COPERRJ:
|
||
jmp SHORT COPERR
|
||
|
||
EXSETA:
|
||
; What we read in may have been in binary mode, flag zapped write OK
|
||
mov [ASCII],ASWITCH ; Set ASCII mode
|
||
or [INEXACT],ASWITCH ; ASCII -> INEXACT
|
||
EXISTS:
|
||
cmp [NOWRITE],0
|
||
jnz NOCHECKING ; If nowrite don't bother with name check
|
||
CALL COMPNAME ; Source and dest. the same?
|
||
JNZ NOCHECKING ; If not, go ahead
|
||
CMP [SRCISDEV],0
|
||
JNZ NOCHECKING ; Same name on device OK
|
||
; At this point we know in append (would have gotten overwrite error on first
|
||
; destination create otherwise), and user trying to specify destination which
|
||
; has been scribbled already (if dest had been named first, NOWRITE would
|
||
; be set).
|
||
MOV DX,OFFSET TRANGROUP:LOSTERR ; Tell him he's not going to get it
|
||
CALL PRINT
|
||
MOV [NXTADD],0 ; Set return
|
||
INC [TERMREAD] ; Tell Read to give up
|
||
RET60:
|
||
return
|
||
|
||
NOCHECKING:
|
||
mov bx,[DESTHAND] ; Get handle
|
||
XOR CX,CX
|
||
XCHG CX,[NXTADD]
|
||
JCXZ RET60 ; If Nothing to write, forget it
|
||
INC [WRITTEN] ; Flag that we wrote something
|
||
CMP [NOWRITE],0 ; If NOWRITE set, just seek CX bytes
|
||
JNZ SEEKEND
|
||
XOR DX,DX
|
||
PUSH DS
|
||
MOV DS,[TPA]
|
||
ASSUME DS:NOTHING
|
||
MOV AH,WRITE
|
||
INT int_command
|
||
POP DS
|
||
ASSUME DS:TRANGROUP
|
||
MOV DX,OFFSET TRANGROUP:NOSPACE
|
||
JC COPERR ; Failure
|
||
sub cx,ax
|
||
retz ; Wrote all supposed to
|
||
test [DESTISDEV],devid_ISDEV
|
||
jz COPERR ; Is a file, error
|
||
test [DESTISDEV],devid_RAW
|
||
jnz DEVWRTERR ; Is a raw device, error
|
||
cmp [INEXACT],0
|
||
retnz ; INEXACT so OK
|
||
dec cx
|
||
retz ; Wrote one byte less (the ^Z)
|
||
DEVWRTERR:
|
||
MOV DX,OFFSET TRANGROUP:DEVWMES
|
||
COPERR:
|
||
CALL PRINT
|
||
inc [DESTCLOSED]
|
||
cmp [CFLAG],0
|
||
jz ENDCOPYJ ; Never actually got it open
|
||
MOV bx,[DESTHAND]
|
||
MOV AH,CLOSE ; Close the file
|
||
INT int_command
|
||
MOV DX,OFFSET TRANGROUP:DESTBUF
|
||
MOV AH,UNLINK
|
||
INT int_command ; And delete it
|
||
MOV [CFLAG],0
|
||
ENDCOPYJ:
|
||
JMP ENDCOPY
|
||
|
||
|
||
SEEKEND:
|
||
xor dx,dx ; Zero high half of offset
|
||
xchg dx,cx ; cx:dx is seek location
|
||
mov ax,(LSEEK SHL 8) OR 1
|
||
INT int_command ; Seek ahead in the file
|
||
cmp [RDEOF],0
|
||
retz
|
||
; If a ^Z has been read we must set the file size to the current
|
||
; file pointer location
|
||
MOV AH,WRITE
|
||
INT int_command ; CX is zero, truncates file
|
||
return
|
||
|
||
SETASC:
|
||
; Given switch vector in AX,
|
||
; Set ASCII switch if A is set
|
||
; Clear ASCII switch if B is set
|
||
; BINARY set if B specified
|
||
; Leave ASCII unchanged if neither or both are set
|
||
; Also sets INEXACT if ASCII is ever set. AL = ASCII on exit, flags set
|
||
AND AL,ASWITCH+BSWITCH
|
||
JPE LOADSW ; PE means both or neither are set
|
||
PUSH AX
|
||
AND AL,BSWITCH
|
||
MOV [BINARY],AL
|
||
POP AX
|
||
AND AL,ASWITCH
|
||
MOV [ASCII],AL
|
||
OR [INEXACT],AL
|
||
LOADSW:
|
||
MOV AL,[ASCII]
|
||
OR AL,AL
|
||
return
|
||
|
||
BUILDDEST:
|
||
cmp [DESTISDIR],-1
|
||
jnz KNOWABOUTDEST ; Already done the figuring
|
||
MOV DI,OFFSET TRANGROUP:USERDIR1
|
||
mov bp,offset trangroup:DESTVARS
|
||
call BUILDPATH
|
||
call RESTUDIR1
|
||
|
||
; Now know all about the destination
|
||
|
||
KNOWABOUTDEST:
|
||
xor al,al
|
||
xchg al,[FIRSTDEST]
|
||
or al,al
|
||
jnz FIRSTDST
|
||
jmp NOTFIRSTDEST
|
||
FIRSTDST:
|
||
mov si,[DESTTAIL] ; Create an FCB of the original DEST
|
||
mov di,offset trangroup:DESTFCB
|
||
mov ax,PARSE_FILE_DESCRIPTOR SHL 8
|
||
INT int_command
|
||
mov ax,word ptr [DESTBUF] ; Get drive
|
||
cmp ah,':'
|
||
jz DRVSPEC4
|
||
mov al,'@'
|
||
DRVSPEC4:
|
||
MOV CL,[ASCII] ; Save current ASCII setting
|
||
sub al,'@'
|
||
mov [DESTFCB],al
|
||
mov al,[DESTINFO]
|
||
mov ah,[SRCINFO]
|
||
and ax,0202H
|
||
or al,al
|
||
jz NOTMELCOPY
|
||
cmp al,ah
|
||
jnz NOTMELCOPY
|
||
cmp [PLUS],0
|
||
jz NOTMELCOPY
|
||
inc [MELCOPY] ; ambig source, ambig dest, and pluses
|
||
xor al,al
|
||
jmp short SETCONC
|
||
|
||
NOTMELCOPY:
|
||
xor al,2 ; al=2 if unambig dest, =0 if ambig dest
|
||
and al,ah
|
||
shr al,1 ; al=1 if unambig dest AND ambig sorce
|
||
; Implies concatination
|
||
SETCONC:
|
||
or al,[PLUS] ; al=1 if concat
|
||
mov [CONCAT],al
|
||
shl al,1
|
||
shl al,1
|
||
mov [INEXACT],al ; Concat -> inexact copy
|
||
cmp [BINARY],0
|
||
jnz NOTFIRSTDEST ; Binary explicitly given, all OK
|
||
mov [ASCII],al ; Concat -> ASCII
|
||
or cl,cl
|
||
jnz NOTFIRSTDEST ; ASCII flag set before, DATA read correctly
|
||
or al,al
|
||
JZ NOTFIRSTDEST ; ASCII flag did not change states
|
||
; At this point there may already be binary read data in the read buffer.
|
||
; We need to find the first ^Z (if there is one) and trim the amount
|
||
; of data in the buffer correctly.
|
||
MOV CX,[NXTADD]
|
||
JCXZ NOTFIRSTDEST ; No data, everything OK
|
||
MOV AL,1AH
|
||
PUSH ES
|
||
XOR DI,DI
|
||
MOV ES,[TPA]
|
||
REPNE SCASB ; Scan for EOF
|
||
POP ES
|
||
JNZ NOTFIRSTDEST ; No ^Z in buffer, everything OK
|
||
DEC DI ; Point at ^Z
|
||
MOV [NXTADD],DI ; New buffer
|
||
NOTFIRSTDEST:
|
||
mov bx,offset trangroup:DIRBUF+1 ; Source of replacement chars
|
||
cmp [CONCAT],0
|
||
jz GOTCHRSRC ; Not a concat
|
||
mov bx,offset trangroup:SDIRBUF+1 ; Source of replacement chars
|
||
GOTCHRSRC:
|
||
mov si,offset trangroup:DESTFCB+1 ; Original dest name
|
||
mov di,[DESTTAIL] ; Where to put result
|
||
|
||
BUILDNAME:
|
||
mov cx,8
|
||
BUILDMAIN:
|
||
lodsb
|
||
cmp al,"?"
|
||
jnz NOTAMBIG
|
||
mov al,byte ptr [BX]
|
||
NOTAMBIG:
|
||
cmp al,' '
|
||
jz NOSTORE
|
||
stosb
|
||
NOSTORE:
|
||
inc bx
|
||
loop BUILDMAIN
|
||
mov cl,3
|
||
cmp byte ptr [SI],' '
|
||
jz ENDDEST ; No extension
|
||
mov al,'.'
|
||
stosb
|
||
BUILDEXT:
|
||
lodsb
|
||
cmp al,"?"
|
||
jnz NOTAMBIGE
|
||
mov al,byte ptr [BX]
|
||
NOTAMBIGE:
|
||
cmp al,' '
|
||
jz NOSTOREE
|
||
stosb
|
||
NOSTOREE:
|
||
inc bx
|
||
loop BUILDEXT
|
||
ENDDEST:
|
||
xor al,al
|
||
stosb ; NUL terminate
|
||
return
|
||
|
||
TRANCODE ENDS
|
||
END
|
||
|