KeqingMoe/argparse
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Modify README.md to show printing errors to stderr instead of stdout

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This commit is contained in:
Ashwin Rohit 2021-10-31 12:29:19 -07:00
parent b98bf25a34
commit 2c55a2e423
1 changed files with 42 additions and 42 deletions
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84
README.md
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@ -59,9 +59,9 @@ int main(int argc, char *argv[]) {
program.parse_args(argc, argv); program.parse_args(argc, argv);
} }
catch (const std::runtime_error& err) { catch (const std::runtime_error& err) {
std::cout << err.what() << std::endl; std::cerr << err.what() << std::endl;
std::cout << program; std::cerr << program;
std::exit(0); std::exit(1);
} }
auto input = program.get<int>("square"); auto input = program.get<int>("square");
@ -101,9 +101,9 @@ try {
program.parse_args(argc, argv); program.parse_args(argc, argv);
} }
catch (const std::runtime_error& err) { catch (const std::runtime_error& err) {
std::cout << err.what() << std::endl; std::cerr << err.what() << std::endl;
std::cout << program; std::cerr << program;
std::exit(0); std::exit(1);
} }
if (program["--verbose"] == true) { if (program["--verbose"] == true) {
@ -167,9 +167,9 @@ try {
program.parse_args(argc, argv); // Example: ./main --color orange program.parse_args(argc, argv); // Example: ./main --color orange
} }
catch (const std::runtime_error& err) { catch (const std::runtime_error& err) {
std::cout << err.what() << std::endl; std::cerr << err.what() << std::endl;
std::cout << program; std::cerr << program;
std::exit(0); std::exit(1);
} }
auto color = program.get<std::string>("--color"); // "orange" auto color = program.get<std::string>("--color"); // "orange"
@ -190,9 +190,9 @@ try {
program.parse_args(argc, argv); // Example: ./main --color red --color green --color blue program.parse_args(argc, argv); // Example: ./main --color red --color green --color blue
} }
catch (const std::runtime_error& err) { catch (const std::runtime_error& err) {
std::cout << err.what() << std::endl; std::cerr << err.what() << std::endl;
std::cout << program; std::cerr << program;
std::exit(0); std::exit(1);
} }
auto colors = program.get<std::vector<std::string>>("--color"); // {"red", "green", "blue"} auto colors = program.get<std::vector<std::string>>("--color"); // {"red", "green", "blue"}
@ -238,9 +238,9 @@ try {
program.parse_args(argc, argv); program.parse_args(argc, argv);
} }
catch (const std::runtime_error& err) { catch (const std::runtime_error& err) {
std::cout << err.what() << std::endl; std::cerr << err.what() << std::endl;
std::cout << program; std::cerr << program;
std::exit(0); std::exit(1);
} }
// Some code to print arguments // Some code to print arguments
@ -271,9 +271,9 @@ try {
program.parse_args(argc, argv); program.parse_args(argc, argv);
} }
catch (const std::runtime_error& err) { catch (const std::runtime_error& err) {
std::cout << err.what() << std::endl; std::cerr << err.what() << std::endl;
std::cout << program; std::cerr << program;
std::exit(0); std::exit(1);
} }
int input = program.get<int>("square"); int input = program.get<int>("square");
@ -331,9 +331,9 @@ try {
program.parse_args(argc, argv); // Example: ./main --input_files config.yml System.xml program.parse_args(argc, argv); // Example: ./main --input_files config.yml System.xml
} }
catch (const std::runtime_error& err) { catch (const std::runtime_error& err) {
std::cout << err.what() << std::endl; std::cerr << err.what() << std::endl;
std::cout << program; std::cerr << program;
std::exit(0); std::exit(1);
} }
auto files = program.get<std::vector<std::string>>("--input_files"); // {"config.yml", "System.xml"} auto files = program.get<std::vector<std::string>>("--input_files"); // {"config.yml", "System.xml"}
@ -360,9 +360,9 @@ try {
program.parse_args(argc, argv); // Example: ./main --query_point 3.5 4.7 9.2 program.parse_args(argc, argv); // Example: ./main --query_point 3.5 4.7 9.2
} }
catch (const std::runtime_error& err) { catch (const std::runtime_error& err) {
std::cout << err.what() << std::endl; std::cerr << err.what() << std::endl;
std::cout << program; std::cerr << program;
std::exit(0); std::exit(1);
} }
auto query_point = program.get<std::vector<double>>("--query_point"); // {3.5, 4.7, 9.2} auto query_point = program.get<std::vector<double>>("--query_point"); // {3.5, 4.7, 9.2}
@ -392,9 +392,9 @@ try {
program.parse_args(argc, argv); // Example: ./main -abc 1.95 2.47 program.parse_args(argc, argv); // Example: ./main -abc 1.95 2.47
} }
catch (const std::runtime_error& err) { catch (const std::runtime_error& err) {
std::cout << err.what() << std::endl; std::cerr << err.what() << std::endl;
std::cout << program; std::cerr << program;
std::exit(0); std::exit(1);
} }
auto a = program.get<bool>("-a"); // true auto a = program.get<bool>("-a"); // true
@ -497,9 +497,9 @@ try {
program.parse_args(argc, argv); program.parse_args(argc, argv);
} }
catch (const std::runtime_error& err) { catch (const std::runtime_error& err) {
std::cout << err.what() << std::endl; std::cerr << err.what() << std::endl;
std::cout << program; std::cerr << program;
std::exit(0); std::exit(1);
} }
try { try {
@ -544,9 +544,9 @@ try {
program.parse_args(argc, argv); program.parse_args(argc, argv);
} }
catch (const std::runtime_error& err) { catch (const std::runtime_error& err) {
std::cout << err.what() << std::endl; std::cerr << err.what() << std::endl;
std::cout << program; std::cerr << program;
std::exit(0); std::exit(1);
} }
auto output_filename = program.get<std::string>("-o"); auto output_filename = program.get<std::string>("-o");
@ -626,9 +626,9 @@ try {
program.parse_args({"./test", "config.json"}); program.parse_args({"./test", "config.json"});
} }
catch (const std::runtime_error& err) { catch (const std::runtime_error& err) {
std::cout << err.what() << std::endl; std::cerr << err.what() << std::endl;
std::cout << program; std::cerr << program;
std::exit(0); std::exit(1);
} }
nlohmann::json config = program.get<nlohmann::json>("config"); nlohmann::json config = program.get<nlohmann::json>("config");
@ -662,9 +662,9 @@ try {
program.parse_args(argc, argv); program.parse_args(argc, argv);
} }
catch (const std::runtime_error& err) { catch (const std::runtime_error& err) {
std::cout << err.what() << std::endl; std::cerr << err.what() << std::endl;
std::cout << program; std::cerr << program;
std::exit(0); std::exit(1);
} }
auto numbers = program.get<std::vector<int>>("numbers"); // {1, 2, 3} auto numbers = program.get<std::vector<int>>("numbers"); // {1, 2, 3}
@ -704,9 +704,9 @@ try {
program.parse_args(argc, argv); program.parse_args(argc, argv);
} }
catch (const std::runtime_error& err) { catch (const std::runtime_error& err) {
std::cout << err.what() << std::endl; std::cerr << err.what() << std::endl;
std::cout << program; std::cerr << program;
std::exit(0); std::exit(1);
} }
auto input = program.get("input"); auto input = program.get("input");