This was much worse than I thought. I had run clang-format at some point, but
apparently I subsequently made some non-compliant changes in pretty much every
file I touched.
also adds a base implementation that most signal sources should inherit from.
The gen_signal_source is inexplicably different (probably as a test fixture,
commonality was not valued).
Only the file_signal_source has been tested; all the sources are modified in the same
way, but we all know the only proof of correctness is testing.
The block factory was simplified a bit. Handling for legacy config files was pulled out
of the flowgraph; now when the "0" instance of a component (Foo0) is created, if there is
no config for it, then the legacy version (Foo) will be tried. This is different from
passing -1 for the item number (which is still supported). Theoretically, all existing
config files should still work.
Avoid indirection caused by passing shared_ptr by reference
The block factory does not have responsability on the lifetime of their inputs
Define std::make_unique when using C++11 and make use of it
Printers are turned into unique_ptr to express ownership
Printers do not participate on the lifelime of the data, so they take const raw pointers
Modernize tests code
Now the block also accepts directly *.ls2 names in filename parameter
Remove samples parameter, it was not used. This source reads the full file(s).
Make labsat23_source constructor private, so only the smart pointer wrapper can be called
