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// This source code is released into the public domain.
module nihil.cli;
import nihil.std;
namespace nihil {
/*
* Get the registry storage. Because this is called from global ctors,
* it handles exceptions itself.
*/
auto get_registry() noexcept -> std::vector<std::shared_ptr<command_node>> &
try {
static auto commands = std::vector<std::shared_ptr<command_node>>();
return commands;
} catch (std::exception const &exc) {
std::println(std::cerr, "{}", exc.what());
std::exit(1); // NOLINT
} catch (...) {
std::println(std::cerr, "get_registered_commands(): unknown error\n");
std::exit(1); // NOLINT
}
/*
* Register a new command.
*/
auto register_command(command *cmd) noexcept -> void
try {
auto null_deleter = [] (command_node const *) -> void {};
auto &commands = get_registry();
commands.emplace_back(cmd, null_deleter);
} catch (std::exception const &exc) {
std::println(std::cerr, "{}", exc.what());
std::exit(1); // NOLINT
} catch (...) {
std::println(std::cerr, "get_registered_commands(): unknown error\n");
std::exit(1); // NOLINT
}
/*
* Get the list of registered commands.
*/
auto get_registered_commands() -> std::span<std::shared_ptr<command_node>>
{
return {get_registry()};
}
} // namespace nihil
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