Prior to this change, the x52cli man page was a manually created file
that was out of date with the source. Rather than update that file, and
maintain a separate document for the HTML sources, it makes sense to
consolidate both the HTML and manpage documentation to a Doxygen page
block within the source and update the Doxyfile to generate man pages as
well.
This change also removes the obsolete manually maintained manpage, and
falls back to Doxygen to build and install the manpage.
Prior to this change, libx52_init needed a supported joystick to be
plugged in, otherwise it would fail with LIBX52_ERROR_NO_DEVICE. This
change modifies the behavior so that libx52_init would still succeed,
but the application should call libx52_connect to make sure that the
device handle is valid. libx52_init still tries to connect to the
joystick, but absence is no longer treated as a failure.
This change also modifies x52cli to check that the joystick is actually
connected before calling the individual handlers. Because libx52_init no
longer fails if the joystick is absent, we need to rely on the return
code from libx52_connect.
Prior to this change, x52cli assumed that the return code from the
handler was a standard error code, but negated. This is an incorrect
assumption as the libx52 API returns a `libx52_error_code` enum, which
is a positive integer.
This change fixes the printing of the error message to call
`libx52_strerror`, which translates it correctly. It also adds error
printing to any failure of `libx52_init`, as well as explicitly
specifying `LIBX52_SUCCESS` instead of `0`.
Addresses #19.
- libx52_init returns the libx52_device in an output parameter and
returns a libx52_error_code
- Make all functions return libx52_error_code
- Update package version to indicate incompatible API change