57 lines
1.5 KiB
C++
57 lines
1.5 KiB
C++
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#include "tclap/CmdLine.h"
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#include <iterator>
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#include <algorithm>
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// Define a simple 3D vector type
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template<typename T, size_t LEN>
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struct Vect {
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typedef TCLAP::StringLike ValueCategory;
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T v[LEN];
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// operator= will be used to assign to the vector
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Vect& operator=(const std::string &str)
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{
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std::istringstream iss(str);
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for (size_t n = 0; n < LEN; n++) {
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if (!(iss >> v[n])) {
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std::ostringstream oss;
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oss << " is not a vector of size " << LEN;
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throw TCLAP::ArgParseException(str + oss.str());
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}
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}
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if (!iss.eof()) {
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std::ostringstream oss;
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oss << " is not a vector of size " << LEN;
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throw TCLAP::ArgParseException(str + oss.str());
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}
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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 + LEN, std::ostream_iterator<T>(os, " "));
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return os;
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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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TCLAP::CmdLine cmd("Command description message", ' ', "0.9");
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TCLAP::ValueArg< Vect<double, 3> > vec("v", "vect", "vector",
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true, Vect<double, 3>(),
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"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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