Function SplitAt

tensorflow/core/framework/op_gen_lib.cc:86–98

Split `*orig` into two pieces at the first occurrence of `split_ch`. Returns whether `split_ch` was found. Afterwards, `*before_split` contains the maximum prefix of the input `*orig` that doesn't contain `split_ch`, and `*orig` contains everything after the first `split_ch`.

// contain `split_ch`, and `*orig` contains everything after the
// first `split_ch`.
static bool SplitAt(char split_ch, StringPiece* orig,
                    StringPiece* before_split) {
  auto pos = orig->find(split_ch);
  if (pos == StringPiece::npos) {
    *before_split = *orig;
    *orig = StringPiece();
    return false;
  } else {
    *before_split = orig->substr(0, pos);
    orig->remove_prefix(pos + 1);
    return true;
  }
}

// Does this line start with "<spaces><field>:" where "<field>" is
// in multi_line_fields? Sets *colon_pos to the position of the colon.