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019d05f64c
That's my mega-commit you've all been waiting for. The code for the shell share more routines with userspace apps than with kernel units, because, well, its behavior is that of a userspace app, not a device driver. This created a weird situation with libraries and jump tables. Some routine belonging to the `kernel/` directory felt weird there. And then comes `apps/basic`, which will likely share even more code with the shell. I was seeing myself creating huge jump tables to reuse code from the shell. It didn't feel right. Moreover, we'll probably want basic-like apps to optionnally replace the shell. So here I am with this huge change in the project structure. I didn't test all recipes on hardware yet, I will do later. I might have broken some... But now, the structure feels better and the line between what belongs to `kernel` and what belongs to `apps` feels clearer.
76 lines
1.4 KiB
NASM
76 lines
1.4 KiB
NASM
; *** SHELL COMMANDS ***
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fsOnCmd:
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.db "fson", 0, 0, 0
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jp fsOn
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; Lists filenames in currently active FS
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flsCmd:
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.db "fls", 0, 0, 0, 0
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ld iy, .iter
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call fsIter
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ret z
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ld a, FS_ERR_NO_FS
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ret
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.iter:
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ld a, FS_META_FNAME_OFFSET
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call addHL
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call printstr
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jp printcrlf
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; Takes one byte block number to allocate as well we one string arg filename
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; and allocates a new file in the current fs.
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fnewCmd:
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.db "fnew", 0b001, 0b1001, 0b001
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push hl
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ld a, (hl)
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inc hl
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call intoHL
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call fsAlloc
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pop hl
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xor a
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ret
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; Deletes filename with specified name
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fdelCmd:
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.db "fdel", 0b1001, 0b001, 0
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push hl
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call intoHL ; HL now holds the string we look for
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call fsFindFN
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jr nz, .notfound
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; Found! delete
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call fsDel
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jr z, .end
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; weird error, continue to error condition
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.notfound:
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ld a, FS_ERR_NOT_FOUND
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.end:
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pop hl
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ret
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; Opens specified filename in specified file handle.
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; First argument is file handle, second one is file name.
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; Example: fopn 0 foo.txt
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fopnCmd:
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.db "fopn", 0b001, 0b1001, 0b001
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push hl
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push de
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ld a, (hl) ; file handle index
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call fsHandle
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; DE now points to file handle
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inc hl
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call intoHL ; HL now holds the string we look for
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call fsFindFN
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jr nz, .notfound
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; Found!
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; FS_PTR points to the file we want to open
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push de \ pop ix ; IX now points to the file handle.
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call fsOpen
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jr .end
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.notfound:
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ld a, FS_ERR_NOT_FOUND
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.end:
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pop de
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pop hl
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ret
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