Function SplitAbstractPath

cpp/src/arrow/filesystem/path_util.cc:37–66

// XXX How does this encode Windows UNC paths?

std::vector<std::string> SplitAbstractPath(const std::string& path, char sep) {
  std::vector<std::string> parts;
  auto v = std::string_view(path);
  // Strip trailing separator
  if (v.length() > 0 && v.back() == sep) {
    v = v.substr(0, v.length() - 1);
  }
  // Strip leading separator
  if (v.length() > 0 && v.front() == sep) {
    v = v.substr(1);
  }
  if (v.length() == 0) {
    return parts;
  }

  auto append_part = [&parts, &v](size_t start, size_t end) {
    parts.emplace_back(v.substr(start, end - start));
  };

  size_t start = 0;
  while (true) {
    size_t end = v.find_first_of(sep, start);
    append_part(start, end);
    if (end == std::string::npos) {
      break;
    }
    start = end + 1;
  }
  return parts;
}

std::string SliceAbstractPath(const std::string& s, int offset, int length, char sep) {
  if (offset < 0 || length < 0) {