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Henry Fredrick Schreiner 2017-10-27 14:07:10 -04:00 committed by Henry Schreiner
parent 6d26440b6e
commit 8cdf1c8651
4 changed files with 15 additions and 18 deletions
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4
examples/subcom_in_files/main.cpp
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@ -4,13 +4,13 @@
#include "subcommand_a.hpp"
int main( int argc, char** argv ) {
int main(int argc, char **argv) {
CLI::App app{"..."};
// Call the setup functions for the subcommands.
// They are kept alive by a shared pointer in the
// lambda function held by CLI11
setup_subcommand_a( app );
setup_subcommand_a(app);
// Make sure we get at least one subcommand
app.require_subcommand();

13
examples/subcom_in_files/subcommand_a.cpp
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@ -8,19 +8,17 @@
/// The variables of the struct are bound to the CLI options.
/// We use a shared ptr so that the addresses of the variables remain for binding,
/// You could return the shared pointer if you wanted to access the values in main.
void setup_subcommand_a( CLI::App& app ) {
void setup_subcommand_a(CLI::App &app) {
// Create the option and subcommand objects.
auto opt = std::make_shared<SubcommandAOptions>();
auto sub = app.add_subcommand( "subcommand_a", "performs subcommand a", true );
auto sub = app.add_subcommand("subcommand_a", "performs subcommand a", true);
// Add options to sub, binding them to opt.
sub->add_option("-f,--file", opt->file, "File name")->required();
sub->add_flag("--with-foo", opt->with_foo, "Counter");
// Set the run function as callback to be called when this subcommand is issued.
sub->set_callback([opt]() {
run_subcommand_a( *opt );
});
sub->set_callback([opt]() { run_subcommand_a(*opt); });
// Note: In C++14, you could make a unique pointer, then pass it into the lambda function via
// a move. That's slightly more elegant, but you won't be able to see the runtime difference
@ -30,11 +28,10 @@ void setup_subcommand_a( CLI::App& app ) {
/// The function that runs our code.
/// This could also simply be in the callback lambda itself,
/// but having a separate function is cleaner.
void run_subcommand_a( SubcommandAOptions const& opt )
{
void run_subcommand_a(SubcommandAOptions const &opt) {
// Do stuff...
std::cout << "Working on file: " << opt.file << std::endl;
if( opt.with_foo ) {
if(opt.with_foo) {
std::cout << "Using foo!" << std::endl;
}
}

4
examples/subcom_in_files/subcommand_a.hpp
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@ -16,5 +16,5 @@ struct SubcommandAOptions {
// is just done this way to be nicely organized
// Function declarations.
void setup_subcommand_a( CLI::App& app );
void run_subcommand_a( SubcommandAOptions const& opt );
void setup_subcommand_a(CLI::App &app);
void run_subcommand_a(SubcommandAOptions const &opt);

4
include/CLI/App.hpp
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@ -45,8 +45,8 @@ using App_p = std::unique_ptr<App>;
/// Creates a command line program, with very few defaults.
/** To use, create a new `Program()` instance with `argc`, `argv`, and a help description. The templated
* add_option methods make it easy to prepare options. Remember to call `.start` before starting your
* program, so that the options can be evaluated and the help option doesn't accidentally run your program. */
* add_option methods make it easy to prepare options. Remember to call `.start` before starting your
* program, so that the options can be evaluated and the help option doesn't accidentally run your program. */
class App {
friend Option;
friend detail::AppFriend;