Method find_last_of

be/src/gutil/strings/stringpiece.cc:171–185

}

int StringPiece::find_last_of(StringPiece s, size_type pos) const {
  if (length_ <= 0 || s.length_ <= 0) return npos;
  // Avoid the cost of BuildLookupTable() for a single-character search.
  if (s.length_ == 1) return find_last_of(s.ptr_[0], pos);

  bool lookup[UCHAR_MAX + 1] = { false };
  BuildLookupTable(s, lookup);
  for (int i = min(pos, static_cast<size_type>(length_ - 1));
       i >= 0; --i) {
    if (lookup[static_cast<unsigned char>(ptr_[i])]) {
      return i;
    }
  }
  return npos;
}

int StringPiece::find_last_not_of(StringPiece s, size_type pos) const {
  if (length_ <= 0) return npos;