[rac] Parse postal code formats and required fields in libaddressinput.

third_party/libaddressinput/chromium/cpp/src/address_field_util.cc

-// Copyright (C) 2013 Google Inc.
-//
-// Licensed under the Apache License, Version 2.0 (the "License");
-// you may not use this file except in compliance with the License.
-// You may obtain a copy of the License at
-//
-// http://www.apache.org/licenses/LICENSE-2.0
-//
-// Unless required by applicable law or agreed to in writing, software
-// distributed under the License is distributed on an "AS IS" BASIS,
-// WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
-// See the License for the specific language governing permissions and
-// limitations under the License.
-
-#include "address_field_util.h"
-
-#include <libaddressinput/address_field.h>
-
-#include <cassert>
-#include <cstddef>
-#include <map>
-#include <string>
-#include <utility>
-#include <vector>
-
-namespace i18n {
-namespace addressinput {
-
-namespace {
-
-std::map<char, AddressField> InitFields() {
-  std::map<char, AddressField> fields;
-  fields.insert(std::make_pair('R', COUNTRY));
-  fields.insert(std::make_pair('S', ADMIN_AREA));
-  fields.insert(std::make_pair('C', LOCALITY));
-  fields.insert(std::make_pair('D', DEPENDENT_LOCALITY));
-  fields.insert(std::make_pair('x', SORTING_CODE));
-  fields.insert(std::make_pair('Z', POSTAL_CODE));
-  fields.insert(std::make_pair('A', STREET_ADDRESS));
-  fields.insert(std::make_pair('O', ORGANIZATION));
-  fields.insert(std::make_pair('N', RECIPIENT));
-  // An extension of AddressField enum used only internally:
-  fields.insert(std::make_pair(
-      'n', static_cast<AddressField>(NEWLINE)));
-  return fields;
-}
-
-const std::map<char, AddressField>& GetFields() {
-  static const std::map<char, AddressField> kFields(InitFields());
-  return kFields;
-}
-
-bool IsTokenPrefix(char c) {
-  return c == '%';
-}
-
-bool IsToken(char c) {
-  return GetFields().find(c) != GetFields().end();
-}
-
-AddressField ParseToken(char c) {
-  std::map<char, AddressField>::const_iterator it = GetFields().find(c);
-  assert(it != GetFields().end());
-  return it->second;
-}
-
-}  // namespace
-
-void ParseAddressFieldsFormat(const std::string& format,
-                              std::vector<AddressField>* fields) {
-  assert(fields != NULL);
-  fields->clear();
-  for (std::string::const_iterator current = format.begin(),
-                                   next = format.begin() + 1;
-       current != format.end() && next != format.end();
-       ++current, ++next) {
-    if (IsTokenPrefix(*current) && IsToken(*next)) {
-      fields->push_back(ParseToken(*next));
-    }
-  }
-}
-
-}  // namespace addressinput
-}  // namespace i18n