153 lines
4.6 KiB
C++
153 lines
4.6 KiB
C++
/**
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* @file main.cpp
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* @brief Main event loop
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*
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* Here typically goes a more extensive explanation of what the header defines.
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*
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* @author Name <email@example.com>
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* @copyright (c) Company Name/ Author, YEAR
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* @copyright Licensed under the Apache License, Version 2.0 <http://www.apache.org/licenses/LICENSE-2.0>
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* @copyright Licensed under the GNU GPLv3 License <http://www.gnu.org/licenses/gpl-3.0.txt>
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*/
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#include <algorithm>
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#include <iostream>
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#include <thread>
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#include <vector>
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#include "version.h"
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// static configuration
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#define LOGFILE_PATH "ctestapp.log"
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#define MAINLOOP_SLEEP_US 1
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// other default values
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#define LOG_VERBOSE 1
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#define LOG_DEBUG 2
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#define LOG_MAX 9
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/**
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* @brief Helper class to parse CLI arguments
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*
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* CLI arguments can be specified with an equals sign between the parameter name and the
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* value, so for `-o=foobar.txt` the option would be `-o`.
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*/
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struct AppOptions {
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int verbosity;
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std::string configstring{};
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AppOptions(int argc, char* argv[] /* NOLINT(modernize-avoid-c-arrays,cppcoreguidelines-avoid-c-arrays) */)
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: verbosity{0}, applicationName{argv[0]} {
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auto cliArgs = std::vector<std::string>{};
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for (int i = 1; i < argc; i++) {
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cliArgs.emplace_back(argv[i]);
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}
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while (!cliArgs.empty()) {
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auto arg = *cliArgs.begin();
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// find flags (but only at the beginning)
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if (0 == arg.find("-h")) {
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printUsage();
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exit(EXIT_SUCCESS);
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break;
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}
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if (0 == arg.find("-v")) {
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this->verbosity = static_cast<int>(std::count(arg.begin(), arg.end(), 'v'));
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} else if (0 == arg.find("-d=")) {
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this->configstring = arg.substr(arg.find('=') + 1);
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} else {
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printUsageShort();
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std::cerr << "error: unrecognized arguments: " << arg << "\n";
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exit(EXIT_FAILURE);
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break;
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}
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// remove the parsed argument from the vector
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cliArgs.erase(cliArgs.begin());
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}
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}
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void printUsageShort() {
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std::cout << "usage: " << this->applicationName << " ";
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std::cout << "[-h] ";
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std::cout << "[-v] ";
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std::cout << "[-d=SOME_CONFIG]\n";
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}
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void printUsage() {
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printUsageShort();
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std::cout << "\n";
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std::cout << "optional arguments:\n";
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std::cout << " -h, show this help message and exit\n";
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std::cout << " -v, increase output verbosity (-vv for VERBOSE)\n";
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std::cout << " -d=SOME_CONFIG, TODO config parameter\n";
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}
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private:
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std::string applicationName;
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};
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int main(int argc, char* argv[]) {
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printf("Template C++ App: " GIT_VERSION_TAG "\n\n");
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// parse CLI options
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AppOptions options(argc, argv);
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// start logging
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loguru::g_preamble_date = false; // The date field
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loguru::g_preamble_time = false; // The time of the current day
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loguru::g_preamble_uptime = true; // The time since init call
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loguru::g_preamble_thread = false; // The logging thread
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loguru::g_preamble_file = true; // The file from which the log originates from
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loguru::g_preamble_verbose = true; // The verbosity field
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loguru::g_preamble_pipe = true; // The pipe symbol right before the message
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loguru::add_file(LOGFILE_PATH, loguru::Truncate, loguru::Verbosity_8);
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LOG_F(INFO, "Version " GIT_VERSION_TAG "");
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// set stdout verbosity level (0 -> WARNING, 1 -> INFO, 2 -> 1, 3 -> 2, 4 -> MAX)
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switch (options.verbosity) {
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case 0: // NOLINT(bugprone-branch-clone)
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loguru::g_stderr_verbosity = loguru::Verbosity_WARNING; // custom default
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break;
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case 1: // NOLINT(bugprone-branch-clone)
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loguru::g_stderr_verbosity = loguru::Verbosity_INFO; // INFO with -v
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break;
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case 2: // NOLINT(bugprone-branch-clone)
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loguru::g_stderr_verbosity = LOG_VERBOSE; // "verbose" with -vv
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break;
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case 3: // NOLINT(bugprone-branch-clone)
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loguru::g_stderr_verbosity = LOG_DEBUG; // "debug" with -vvv
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break;
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case 4: // NOLINT(bugprone-branch-clone)
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loguru::g_stderr_verbosity = loguru::Verbosity_MAX; // everything with -vvvv
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break;
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default:
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LOG_F(WARNING, "Unrecognised verbosity level %i!", options.verbosity);
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break;
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}
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//
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// SETUP
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//
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// TODO: do some setup here
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//
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// MAIN LOOP
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//
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while (true) {
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// TODO: do some work here
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// very simple ratelimit
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std::this_thread::sleep_for(std::chrono::milliseconds(MAINLOOP_SLEEP_US));
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}
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return EXIT_SUCCESS;
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}
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