looper/main.cpp

#include "options.hpp"
#include "backend.hpp"
#include "log.hpp"
#include "thirdparty/CLI11.hpp"
#include "data.h"
using namespace Looper;
using namespace Looper::Options;
using namespace Looper::Log;

int main(int argc, char **argv) {
    std::vector<std::string> args;
    for (int i = 1; i < argc; i++) {
        args.push_back(std::string(argv[i]));
    }
    CLI::App app{DESCRIPTION};
    std::string filename = "";
    app.allow_extras();
    int log_level;
    std::string ui_backend_option = "";
    bool full_help = false;
    app.add_option("-l, --log-level", LogStream::log_level, "Sets the minimum log level to display in the logs.");
    app.add_option("-u, --ui-backend", ui_backend_option, "Specifies which UI backend to use.");
    try {
        app.parse(args);
    } catch (const CLI::ParseError &e) {
        if (app.get_help_ptr()->get_callback_run()) {
            full_help = true;
        } else {
            exit(app.exit(e));
        }
    }
    args.clear();
    args = app.remaining(false);
    int new_argc = args.size();
    char **new_argv = (char**)malloc(new_argc * sizeof(char*));
    init_logging();
    DEBUG.writeln("Command line arguments after first parse:");
    for (size_t i = 0; i < new_argc; i++) {
        auto &arg = args[i];
        DEBUG.writefln(" - '%s'", arg.c_str());
        new_argv[i] = strdup(arg.c_str());
    }
    DEBUG.writeln("Initializing frontends...");
    init_backends();
    DEBUG.writeln("Loaded frontends: ");
    for (auto kv : UIBackend::backends) {
        DEBUG.writefln(" - '%s'", kv.first.c_str());
    }
    DEBUG.writeln("Loading options file...");
    load_options();
    std::string backend_id = get_option<std::string>("ui.frontend", "imgui");
    UIBackend *backend = UIBackend::get_backend(ui_backend_option).value_or(UIBackend::get_backend(backend_id).value_or(UIBackend::get_first_backend()));
    int output = 0;
    if (backend == nullptr) {
        ERROR.writeln("No UI backend could be found.");
        return -1;
    } else {
        DEBUG.writefln("Using backend: '%s'...", backend->get_id().c_str());
        if (full_help) {
            args.clear();
            args.push_back("--help");
        }
        try {
            output = backend->run(args, new_argc, new_argv);
        } catch (int return_code) {
            if (full_help) {
                std::string helpstr = app.help();
                helpstr = helpstr.substr(helpstr.find("\n") + 1);
                helpstr = helpstr.substr(helpstr.find("\n") + 1);
                helpstr = helpstr.substr(helpstr.find("\n") + 1);
                helpstr = helpstr.substr(helpstr.find("\n") + 1);
                helpstr = helpstr.substr(helpstr.find("\n") + 1);
                printf(helpstr.c_str());
            }
            output = return_code;
        }
    }
    DEBUG.writeln("Exiting...");
    UIBackend::deinit_backends();
    for (int i = 0; i < new_argc; i++) {
        free(new_argv[i]);
    }
    free(new_argv);
    save_options();
    return output;
}