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Fix issue #240: Multiple long option names / aliases (#349)

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* Fixes #240: Multiple long option names / aliases

* We now use a vector of long option names instead of a single name
* When specifying an option, you can provide multiple names separated by commas, at most one of which may have a length of 1 (not necessarily the first specified name). The length-1 name is the single-hyphen switch (the "short name").
* Hashing uses the first long name
* Option help currently only uses the first long name.
This commit is contained in:
Eyal Rozenberg
2022-07-14 16:42:18 +10:00
committed by GitHub
parent 43ebb49475
commit e976f964c3
4 changed files with 153 additions and 77 deletions
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test/options.cpp
+23 -3
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@@ -49,6 +49,9 @@ TEST_CASE("Basic options", "[options]")
options.add_options()
("long", "a long option")
("s,short", "a short option")
("quick,brown", "An option with multiple long names and no short name")
("f,ox,jumped", "An option with multiple long names and a short name")
("over,z,lazy,dog", "An option with multiple long names and a short name, not listed first")
("value", "an option with a value", cxxopts::value<std::string>())
("a,av", "a short option with a value", cxxopts::value<std::string>())
("6,six", "a short number option")
@@ -67,6 +70,14 @@ TEST_CASE("Basic options", "[options]")
"-6",
"-p",
"--space",
"--quick",
"--ox",
"-f",
"--brown",
"-z",
"--over",
"--dog",
"--lazy"
});
auto** actual_argv = argv.argv();
@@ -83,9 +94,12 @@ TEST_CASE("Basic options", "[options]")
CHECK(result.count("6") == 1);
CHECK(result.count("p") == 2);
CHECK(result.count("space") == 2);
CHECK(result.count("quick") == 2);
CHECK(result.count("f") == 2);
CHECK(result.count("z") == 4);
auto& arguments = result.arguments();
REQUIRE(arguments.size() == 7);
REQUIRE(arguments.size() == 15);
CHECK(arguments[0].key() == "long");
CHECK(arguments[0].value() == "true");
CHECK(arguments[0].as<bool>() == true);
@@ -786,24 +800,30 @@ TEST_CASE("Option add with add_option(string, Option)", "[options]") {
options.add_option("", option_1);
options.add_option("TEST", {"a,aggregate", "test option 2", cxxopts::value<int>(), "AGGREGATE"});
options.add_option("TEST", {"multilong,m,multilong-alias", "test option 3", cxxopts::value<int>(), "An option with multiple long names"});
Argv argv_({
"test",
"--test",
"5",
"-a",
"4"
"4",
"--multilong-alias",
"6"
});
auto argc = argv_.argc();
auto** argv = argv_.argv();
auto result = options.parse(argc, argv);
CHECK(result.arguments().size()==2);
CHECK(result.arguments().size() == 3);
CHECK(options.groups().size() == 2);
CHECK(result.count("address") == 0);
CHECK(result.count("aggregate") == 1);
CHECK(result.count("test") == 1);
CHECK(result["aggregate"].as<int>() == 4);
CHECK(result["multilong"].as<int>() == 6);
CHECK(result["multilong-alias"].as<int>() == 6);
CHECK(result["m"].as<int>() == 6);
CHECK(result["test"].as<int>() == 5);
}