Many of the arrays defined within this file weren't declared as
immutable, which can inhibit the strings being put into the read-only
segment. We can declare them constexpr to make them immutable.
While we're at it, we can use std::array, to allow bounds conditional
bounds checking with standard libraries. The declarations can also be
shortened in the future when all platform toolchain versions we use
support std::array deduction guides. Currently macOS and FreeBSD
builders fail on them.
The vector is only ever queryied and it's contents aren't modified, so
there's no reason to take the vector by value. We can take a constant
reference to it to avoid unnecessary allocating.
In these cases, the given string is only ever compared against other
string, so std::string can be turned into a std::string_view to allow
non-allocating inputs.
If opening the adapter fails, report the libusb error message in the GUI
instead of “No Adapter Detected”.
The error condition is removed when the adapter is unplugged.
Ensures that the destruction logic is kept local to the translation unit
(making it nicer when it comes to forward declaring non-trivial types).
It also doesn't really do much to define it in the header.
Given we're simply storing the std::string into a deque. We can emplace
it and move it. Completely avoiding copies with the current usage of the
function.
The pack is already has its validity checked at the beginning of the
function, so we don't need to check this again after inserting it.
Also resolves a use-after-move case.
Same behavior but doesn't take up 8 bytes in the executable to store a
pointer. While we're at it, move it into an anonymous namespace within
the UICommon namespace.
We already check ahead of time if the optional contains a value within
it before accessing it, so we don't need to use the throwing value()
accessor. We can just directly use operator->
Rather than construct strings twice, we can just construct it once and
reuse it. While we're at it, we can move variables closer to where
they're actually used within DownloadDefaultCover()
* Simplifies libusb context usage and allows us to set options for
all contexts easily. Notably, this lets us enable usbdk support
in libusb, which is now opt-in in the latest version.
* Moves the libusb config descriptor wrapper class to LibusbUtils too
since that could easily be reused.
* Moves device listing to LibusbUtils too and add a lock around it
as some libusb backends are not thread safe.
* Consequences: only a single context and a single event handling
thread is used now, which is more efficient.
This allows the same code to be used to read into a std::string, which
allows for eliminating the vector->string transfer when reading the
manifest file.
A ContiguousContainer is a concept that includes std::array,
std::string, and std::vector.
Makes it way harder to introduce resource leaks, and plugs the existing
resource leaks in the constructor and Install() where the file wouldn't
be closed in some error cases.
Now that we assume C++17, the in-file definition of the std::array can
be removed. This is all that's necessary, as constexpr used on a static
member variable implies inline (and so, automatically has C++17's static
inline behavior).
