input_parser.h

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#include <sstream>
#include <vector>

class InputParser
{
public:
  InputParser(int &argc, char **argv)
  {
    for (int i = 1; i < argc; ++i) this->tokens.push_back(std::string(argv[i]));
  }

  template <typename T>
  bool getCmdOption(const std::string &option, T &ret) const
  {
    std::stringstream ss;
    auto itr = std::find(this->tokens.begin(), this->tokens.end(), option);
    if (itr != this->tokens.end() && ++itr != this->tokens.end())
    {
      ss << *itr;
      ss >> ret;
      return true;
    }
    return false;
  }

  bool cmdOptionExists(const std::string &option) const
  {
    return std::find(this->tokens.begin(), this->tokens.end(), option) != this->tokens.end();
  }

private:
  std::vector<std::string> tokens;
};