Function SplitStringToIteratorUsing

src/base/split_string.h:88–122

template <typename StringType, typename ITR>
static inline
void SplitStringToIteratorUsing(const StringType& full,
                                const char* delim,
                                ITR& result) {
  // Optimize the common case where delim is a single character.
  if (delim[0] != '\0' && delim[1] == '\0') {
    char c = delim[0];
    const char* p = full.data();
    const char* end = p + full.size();
    while (p != end) {
      if (*p == c) {
        ++p;
      } else {
        const char* start = p;
        while (++p != end && *p != c) {
          // Skip to the next occurence of the delimiter.
        }
        *result++ = StringType(start, p - start);
      }
    }
    return;
  }

  std::string::size_type begin_index, end_index;
  begin_index = full.find_first_not_of(delim);
  while (begin_index != std::string::npos) {
    end_index = full.find_first_of(delim, begin_index);
    if (end_index == std::string::npos) {
      *result++ = full.substr(begin_index);
      return;
    }
    *result++ = full.substr(begin_index, (end_index - begin_index));
    begin_index = full.find_first_not_of(delim, end_index);
  }
}

#endif   // XLEARN_BASE_SPLIT_STRING_H_