Age | Commit message (Collapse) | Author | Files | Lines |
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The rewrite is now on feature-parity with ncdu 1.x. What remains is
bugfixing and polishing.
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This complicated the scan code more than I had anticipated and has a
few inherent bugs with respect to calculating shared hardlink sizes.
Still, the merge approach avoids creating a full copy of the subtree, so
that's another memory usage related win compared to the C version.
On the other hand, it does leak memory if nodes can't be reused.
Not quite as well tested as I should have, so I'm sure there's bugs.
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Two differences compared to the C version:
- You can now select individual paths in the listing, pressing enter
will open the selected path in the browser window.
- Creating this listing is much slower and requires, in the worst case,
a full traversal through the in-memory tree. I've tested this without
the same-dev and shared-parent optimizations (i.e. worst case) on an
import with 30M files and performance was still quite acceptable - the
listing completed in a second - so I didn't bother adding a loading
indicator. On slower systems and even larger trees this may be a
little annoying, though.
(also, calling nonl() apparently breaks detection of the return key,
neither \n nor KEY_ENTER are emitted for some reason)
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Doesn't display the item's path anymore (seems rather redundant) but
adds a few more other fields.
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In a similar way to the C version of ncdu: by wrapping malloc(). It's
simpler to handle allocation failures at the source to allow for easy
retries, pushing the retries up the stack will complicate code somewhat
more. Likewise, this is a best-effort approach to handling OOM,
allocation failures in ncurses aren't handled and display glitches may
occur when we get an OOM inside a drawing function.
This is a somewhat un-Zig-like way of handling errors and adds
scary-looking 'catch unreachable's all over the code, but that's okay.
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Performance is looking great, but the code is rather ugly and
potentially buggy. Also doesn't handle hard links without an "nlink"
field yet.
Error handling of the import code is different from what I've been doing
until now. That's intentional, I'll change error handling of other
pieces to call ui.die() directly rather than propagating error enums.
The approach is less testable but conceptually simpler, it's perfectly
fine for a tiny application like ncdu.
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I plan to add more display options, but ran out of keys to bind.
Probably going for a quick-select menu thingy so that we can keep the
old key bindings for people accustomed to it.
The graph width algorithm is slightly different, but I think this one's
a minor improvement.
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The exported file format is fully compatible with ncdu 1.x, but has a
few minor differences. I've backported these changes in
ca51d4ed1a0f61042fc43d2a7ae8732351431654
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(+ 2 minor crash fixes due to out-of-bounds cursor_idx)
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