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- /*
-
- Copyright (c) 2014 Jarryd Beck
-
- Permission is hereby granted, free of charge, to any person obtaining a copy
- of this software and associated documentation files (the "Software"), to deal
- in the Software without restriction, including without limitation the rights
- to use, copy, modify, merge, publish, distribute, sublicense, and/or sell
- copies of the Software, and to permit persons to whom the Software is
- furnished to do so, subject to the following conditions:
-
- The above copyright notice and this permission notice shall be included in
- all copies or substantial portions of the Software.
-
- THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR
- IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,
- FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL THE
- AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER
- LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM,
- OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN
- THE SOFTWARE.
-
- */
-
- #include <iostream>
-
- #include "cxxopts.hpp"
-
- void
- parse(int argc, char* argv[])
- {
- try
- {
- cxxopts::Options options(argv[0], " - example command line options");
- options
- .positional_help("[optional args]")
- .show_positional_help();
-
- bool apple = false;
-
- options
- .allow_unrecognised_options()
- .add_options()
- ("a,apple", "an apple", cxxopts::value<bool>(apple))
- ("b,bob", "Bob")
- ("char", "A character", cxxopts::value<char>())
- ("t,true", "True", cxxopts::value<bool>()->default_value("true"))
- ("f, file", "File", cxxopts::value<std::vector<std::string>>(), "FILE")
- ("i,input", "Input", cxxopts::value<std::string>())
- ("o,output", "Output file", cxxopts::value<std::string>()
- ->default_value("a.out")->implicit_value("b.def"), "BIN")
- ("x", "A short-only option", cxxopts::value<std::string>())
- ("positional",
- "Positional arguments: these are the arguments that are entered "
- "without an option", cxxopts::value<std::vector<std::string>>())
- ("long-description",
- "thisisareallylongwordthattakesupthewholelineandcannotbebrokenataspace")
- ("help", "Print help")
- ("int", "An integer", cxxopts::value<int>(), "N")
- ("float", "A floating point number", cxxopts::value<float>())
- ("vector", "A list of doubles", cxxopts::value<std::vector<double>>())
- ("option_that_is_too_long_for_the_help", "A very long option")
- #ifdef CXXOPTS_USE_UNICODE
- ("unicode", u8"A help option with non-ascii: à. Here the size of the"
- " string should be correct")
- #endif
- ;
-
- options.add_options("Group")
- ("c,compile", "compile")
- ("d,drop", "drop", cxxopts::value<std::vector<std::string>>());
-
- options.parse_positional({"input", "output", "positional"});
-
- auto result = options.parse(argc, argv);
-
- if (result.count("help"))
- {
- std::cout << options.help({"", "Group"}) << std::endl;
- exit(0);
- }
-
- if (apple)
- {
- std::cout << "Saw option ‘a’ " << result.count("a") << " times " <<
- std::endl;
- }
-
- if (result.count("b"))
- {
- std::cout << "Saw option ‘b’" << std::endl;
- }
-
- if (result.count("char"))
- {
- std::cout << "Saw a character ‘" << result["char"].as<char>() << "’" << std::endl;
- }
-
- if (result.count("f"))
- {
- auto& ff = result["f"].as<std::vector<std::string>>();
- std::cout << "Files" << std::endl;
- for (const auto& f : ff)
- {
- std::cout << f << std::endl;
- }
- }
-
- if (result.count("input"))
- {
- std::cout << "Input = " << result["input"].as<std::string>()
- << std::endl;
- }
-
- if (result.count("output"))
- {
- std::cout << "Output = " << result["output"].as<std::string>()
- << std::endl;
- }
-
- if (result.count("positional"))
- {
- std::cout << "Positional = {";
- auto& v = result["positional"].as<std::vector<std::string>>();
- for (const auto& s : v) {
- std::cout << s << ", ";
- }
- std::cout << "}" << std::endl;
- }
-
- if (result.count("int"))
- {
- std::cout << "int = " << result["int"].as<int>() << std::endl;
- }
-
- if (result.count("float"))
- {
- std::cout << "float = " << result["float"].as<float>() << std::endl;
- }
-
- if (result.count("vector"))
- {
- std::cout << "vector = ";
- const auto values = result["vector"].as<std::vector<double>>();
- for (const auto& v : values) {
- std::cout << v << ", ";
- }
- std::cout << std::endl;
- }
-
- std::cout << "Arguments remain = " << argc << std::endl;
-
- auto arguments = result.arguments();
- std::cout << "Saw " << arguments.size() << " arguments" << std::endl;
- }
- catch (const cxxopts::OptionException& e)
- {
- std::cout << "error parsing options: " << e.what() << std::endl;
- exit(1);
- }
- }
-
- int main(int argc, char* argv[])
- {
- parse(argc, argv);
-
- return 0;
- }
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