mirror of
https://github.com/hsoft/collapseos.git
synced 2024-11-17 09:48:05 +11:00
88 lines
1.6 KiB
NASM
88 lines
1.6 KiB
NASM
; *** SHELL COMMANDS ***
|
|
fsOnCmd:
|
|
.db "fson", 0, 0, 0
|
|
jp fsOn
|
|
|
|
; Lists filenames in currently active FS
|
|
flsCmd:
|
|
.db "fls", 0, 0, 0, 0
|
|
call fsBegin
|
|
jr nz, .error
|
|
.loop:
|
|
call fsIsDeleted
|
|
jr z, .skip
|
|
ld hl, FS_META+FS_META_FNAME_OFFSET
|
|
call printstr
|
|
call printcrlf
|
|
.skip:
|
|
call fsNext
|
|
jr z, .loop ; Z set? fsNext was successful
|
|
xor a
|
|
jr .end
|
|
.error:
|
|
ld a, FS_ERR_NO_FS
|
|
.end:
|
|
ret
|
|
|
|
; Takes one byte block number to allocate as well we one string arg filename
|
|
; and allocates a new file in the current fs.
|
|
fnewCmd:
|
|
.db "fnew", 0b001, 0b1001, 0b001
|
|
push hl
|
|
ld a, (hl)
|
|
inc hl
|
|
call intoHL
|
|
call fsAlloc
|
|
pop hl
|
|
xor a
|
|
ret
|
|
|
|
; Deletes filename with specified name
|
|
fdelCmd:
|
|
.db "fdel", 0b1001, 0b001, 0
|
|
push hl
|
|
push de
|
|
call intoHL ; HL now holds the string we look for
|
|
call fsFindFN
|
|
jr nz, .notfound
|
|
; Found! delete
|
|
xor a
|
|
; Set filename to zero to flag it as deleted
|
|
ld (FS_META+FS_META_FNAME_OFFSET), a
|
|
call fsWriteMeta
|
|
; a already to 0, our result.
|
|
jr .end
|
|
.notfound:
|
|
ld a, FS_ERR_NOT_FOUND
|
|
.end:
|
|
pop de
|
|
pop hl
|
|
ret
|
|
|
|
|
|
; Opens specified filename in specified file handle.
|
|
; First argument is file handle, second one is file name.
|
|
; Example: fopn 0 foo.txt
|
|
fopnCmd:
|
|
.db "fopn", 0b001, 0b1001, 0b001
|
|
push hl
|
|
push de
|
|
ld a, (hl) ; file handle index
|
|
ld de, FS_HANDLES
|
|
call addDE ; DE now stores pointer to file handle
|
|
inc hl
|
|
call intoHL ; HL now holds the string we look for
|
|
call fsFindFN
|
|
jr nz, .notfound
|
|
; Found!
|
|
; FS_PTR points to the file we want to open
|
|
push de \ pop ix ; IX now points to the file handle.
|
|
call fsOpen
|
|
jr .end
|
|
.notfound:
|
|
ld a, FS_ERR_NOT_FOUND
|
|
.end:
|
|
pop de
|
|
pop hl
|
|
ret
|