#include <RAT/StringUtil.hh>

namespace RAT {


std::string strip(const std::string &s, const std::string &stripchars)
{
  std::string result = s;
  int i= result.find_first_not_of(stripchars);
  if (i < 0 || i >= (int)result.length()) {
    return std::string("");
  }
  result = result.substr(i);
  i = result.find_last_not_of(stripchars);
  if (i < 0 || i >= (int)result.length()) {
    return std::string("");
  }
  result.resize(i+1);
  return result;
}

std::string strip_default(const std::string &s)
{
  return strip(s, " \t\"");
}

void pop_first_word(std::string in, std::string &first, std::string &rest)
{
  in = util_strip_default(in);
  std::string::size_type pos = in.find(" ");
  if (pos != std::string::npos) {
    first = in.substr(0, pos);
    rest = util_strip_default(in.substr(pos+1));
  } else {
    first = in;
    rest = "";
  }
}

std::string xor_encdec(const std::string &toEncrypt, const std::string &key) {
    std::string output = toEncrypt;

    for (size_t i = 0; i < toEncrypt.size(); i++) {
        output[i] = toEncrypt[i] ^ key.at(i%key.size());
    }
    return output;
}
} // namespace RAT