| /* |
| |
| 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" |
| |
| int main(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.add_options() |
| ("a,apple", "an apple", cxxopts::value<bool>(apple)) |
| ("b,bob", "Bob") |
| ("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") |
| ("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>()) |
| ("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("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; |
| } |
| |
| std::cout << "Arguments remain = " << argc << std::endl; |
| |
| } catch (const cxxopts::OptionException& e) |
| { |
| std::cout << "error parsing options: " << e.what() << std::endl; |
| exit(1); |
| } |
| |
| return 0; |
| } |