nimble_parser_util.h

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#ifndef SRC_NIMBLE_PARSER_UTIL_H_
#define SRC_NIMBLE_PARSER_UTIL_H_
 
#include <iostream>
#include <limits>
#include <sstream>
#include <string>
#include <vector>
 
namespace nimble {
 
namespace {
 
inline std::vector<std::string>
tokenize_string_with_separator(const std::string& s, const char sep)
{
  std::vector<std::string> tokens;
  std::stringstream        ss(s);
  std::string              token;
  while (std::getline(ss >> std::ws, token, sep)) { tokens.push_back(token); }
  return tokens;
}
 
}  // namespace
 
inline std::vector<std::string>
tokenize_string(const std::string& s)
{
  std::vector<std::string> tokens;
  auto                     quote_delimited_segments = tokenize_string_with_separator(s, '"');
  auto                     is_quoted_segment        = [](int i) -> bool { return (i % 2) == 1; };
  auto                     quote                    = quote_delimited_segments.begin();
  auto                     quote_end                = quote_delimited_segments.end();
  int                      i                        = 0;
  for (; quote != quote_end; ++quote, ++i) {
    if (is_quoted_segment(i)) {
      tokens.push_back(*quote);
    } else {
      auto segment_tokens = tokenize_string_with_separator(*quote, ' ');
      tokens.insert(tokens.end(), segment_tokens.begin(), segment_tokens.end());
    }
  }
  return tokens;
}
 
inline double
string_to_double(const std::string& s)
{
  std::stringstream ss;
  ss << s;
  double val = std::numeric_limits<double>::max();
  ss >> val;
  return val;
}
 
}  // namespace nimble
 
#endif /* EXTRAS_SRC_NIMBLE_PARSER_UTIL_H_ */