Mercurial > hg
view tests/test-empty-dir.t @ 44143:7f86426fdd2c
rust-node: binary Node ID and conversion utilities
The choice of type makes sure that a `Node` has the exact
wanted size. We'll use a different type for prefixes.
Added dependency: hexadecimal conversion relies on the
`hex` crate.
The fact that sooner or later Mercurial is going to need
to change its hash sizes has been taken strongly in
consideration:
- the hash length is a constant, but that is not directly
exposed to callers. Changing the value of that constant
is the only thing to do to change the hash length (even
in unit tests)
- the code could be adapted to support several sizes of hashes,
if that turned out to be useful. To that effect, only the
size of a given `Node` is exposed in the public API.
- callers not involved in initial computation, I/O and FFI
are able to operate without a priori assumptions on the hash
size. The traits `FromHex` and `ToHex` have not been directly
implemented, so that the doc-comments explaining these
restrictions would stay really visible in `cargo doc`
Differential Revision: https://phab.mercurial-scm.org/D7788
author | Georges Racinet <georges.racinet@octobus.net> |
---|---|
date | Wed, 22 Jan 2020 16:37:05 +0100 |
parents | 3b165c127690 |
children |
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$ hg init $ echo 123 > a $ hg add a $ hg commit -m "first" a $ mkdir sub $ echo 321 > sub/b $ hg add sub/b $ hg commit -m "second" sub/b $ cat sub/b 321 $ hg co 0 0 files updated, 0 files merged, 1 files removed, 0 files unresolved $ cat sub/b 2>/dev/null || echo "sub/b not present" sub/b not present $ test -d sub || echo "sub not present" sub not present