While resolved paths always contain the `\\?\` prefix, it's not always
correct to strip only those 4 chars. In case of UNC paths, the prefix
is actually a bit longer (`\\?\UNC\`) and needs to be replaced with `\\`
instead.
Failing to do so results in invalid paths, e.g. `\\Host\Share\File` becomes
`UNC\Host\Share\File` which totally wrong.
Since one cannot really compare system time to filesystem time (see e.g.
https://lkml.org/lkml/2017/3/30/809), allow for 1 second error to avoid
(or at least minimize) random test failures.
This way all the qualifiers (`const`, `volatile`, `mutable`) are grouped
together, e.g. `T const* const x` vs. `const T* const x`. Also helps reading
types right-to-left, e.g. "constant pointer to constant T" vs. "constant
pointer to T which is constant".
There're places where manual intervention is still required as uncrustify
is not ideal (unfortunately), but at least one may rely on it to do the
right thing most of the time (e.g. when sending in a patch).
The style itself is quite different from what we had before but making it
uniform across all the codebase is the key. I also hope that it'll make the
code more readable (YMMV) and less sensitive to further changes.
Defer validity checks until path gets to the remote side, where they
actually make sense. Add simple checks for download directory path to
ensure it's not relative, since one cannot know what current working
directory of the remote process is.
