53 lines
1.1 KiB
C++
53 lines
1.1 KiB
C++
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#include "tclap/CmdLine.h"
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#include <iterator>
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using namespace TCLAP;
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// Define a simple 3D vector type
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struct Vect3D {
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double v[3];
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// operator= will be used to assign to the vector
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Vect3D& operator=(const std::string &str)
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{
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std::istringstream iss(str);
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if (!(iss >> v[0] >> v[1] >> v[2]))
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throw TCLAP::ArgParseException(str + " is not a 3D vector");
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return *this;
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}
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std::ostream& print(std::ostream &os) const
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{
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std::copy(v, v + 3, std::ostream_iterator<double>(os, " "));
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return os;
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}
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};
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// Create an ArgTraits for the 3D vector type that declares it to be
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// of string like type
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namespace TCLAP {
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template<>
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struct ArgTraits<Vect3D> {
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typedef StringLike ValueCategory;
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};
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}
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int main(int argc, char *argv[])
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{
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CmdLine cmd("Command description message", ' ', "0.9");
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ValueArg<Vect3D> vec("v", "vect", "vector",
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true, Vect3D(), "3D vector", cmd);
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try {
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cmd.parse(argc, argv);
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} catch(std::exception &e) {
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std::cout << e.what() << std::endl;
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return EXIT_FAILURE;
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}
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vec.getValue().print(std::cout);
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std::cout << std::endl;
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}
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