[rac] Download all rules for a country code in libaddressinput.

third_party/libaddressinput/chromium/cpp/src/rule.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 "rule.h"
 
 #include <libaddressinput/address_field.h>
 #include <libaddressinput/util/scoped_ptr.h>
 
 #include <cassert>
 #include <cstddef>
 #include <string>
 #include <vector>
 
 #include "grit.h"
 #include "messages.h"
+#include "region_data_constants.h"
 #include "util/json.h"
 #include "util/string_split.h"
 
 namespace i18n {
 namespace addressinput {
 
 namespace {
 
+// Allocated once and leaked on shutdown.
+static Rule* default_rule = NULL;
+
 bool ParseToken(char c, AddressField* field) {
   assert(field != NULL);
   switch (c) {
     case 'R':
       *field = COUNTRY;
       return true;
     case 'S':
       *field = ADMIN_AREA;
       return true;
     case 'C':
@@ skipping 119 matching lines @@
       required_(),
       sub_keys_(),
       languages_(),
       language_(),
       postal_code_format_(),
       admin_area_name_message_id_(INVALID_MESSAGE_ID),
       postal_code_name_message_id_(INVALID_MESSAGE_ID) {}
 
 Rule::~Rule() {}
 
+// static
+const Rule& Rule::GetDefault() {
+  if (default_rule == NULL) {
+    default_rule = new Rule;
+    default_rule->ParseSerializedRule(
+        RegionDataConstants::GetDefaultRegionData());
+  }
+  return *default_rule;
+}
+
 void Rule::CopyFrom(const Rule& rule) {
   format_ = rule.format_;
   required_ = rule.required_;
   sub_keys_ = rule.sub_keys_;
   languages_ = rule.languages_;
   language_ = rule.language_;
   postal_code_format_ = rule.postal_code_format_;
   admin_area_name_message_id_ = rule.admin_area_name_message_id_;
   postal_code_name_message_id_ = rule.postal_code_name_message_id_;
 }
@@ skipping 38 matching lines @@
 
   if (json->GetStringValueForKey("zip_name_type", &value)) {
     postal_code_name_message_id_ = GetPostalCodeMessageId(value);
   }
 
   return true;
 }
 
 }  // namespace addressinput
 }  // namespace i18n