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

third_party/libaddressinput/chromium/cpp/src/country_rules_retriever.h

Index: third_party/libaddressinput/chromium/cpp/src/country_rules_retriever.h
diff --git a/third_party/libaddressinput/chromium/cpp/src/country_rules_retriever.h b/third_party/libaddressinput/chromium/cpp/src/country_rules_retriever.h
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+// Copyright (C) 2014 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.
+
+#ifndef I18N_ADDRESSINPUT_COUNTRY_RULES_RETRIEVER_H_
+#define I18N_ADDRESSINPUT_COUNTRY_RULES_RETRIEVER_H_
+
+#include <libaddressinput/callback.h>
+#include <libaddressinput/util/basictypes.h>
+#include <libaddressinput/util/scoped_ptr.h>
+
+#include <map>
+#include <string>
+#include <vector>
+
+namespace i18n {
+namespace addressinput {
+
+class Retriever;
+class Ruleset;
+
+// Retrieves a ruleset for a country. Sample usage:
+//    class MyClass {
+//     public:
+//      MyClass() : retriever_(scoped_ptr<const Retriever>(...)) {}
+//
+//      ~MyClass() {}
+//
+//      void GetRuleset(const std::string& country_code) {
+//        retriever_.RetrieveRules(
+//            country_code,
+//            BuildScopedPtrCallback(this, &MyClass::OnRulesetReady));
+//      }
+//
+//      void OnRulesetReady(bool success,
+//                          const std::string& country_code,
+//                          scoped_ptr<Ruleset> ruleset) {
+//        ...
+//      }
+//
+//     private:
+//      CountryRulesRetriever retriever_;
+//
+//      DISALLOW_COPY_AND_ASSIGN(CountryRulesRetriever);
+//    };
+class CountryRulesRetriever {
+ public:
+  typedef i18n::addressinput::ScopedPtrCallback<std::string, Ruleset> Callback;
+
+  explicit CountryRulesRetriever(scoped_ptr<Retriever> retriever);
+
+  ~CountryRulesRetriever();
+
+  // Recursively retrieves all of the rules for |country_code| and its
+  // administrative areas, localities, and dependent localities. Invokes the
+  // |rules_ready| callback when finished.
+  void RetrieveRules(const std::string& country_code,
+                     scoped_ptr<Callback> rules_ready);
+
+ private:
+  class RulesetData;
+  struct RequestData;
+
+  // Callback for Retriever::Retrieve() method.
+  void OnDataReady(bool success,
+                   const std::string& key,
+                   const std::string& data);
+
+  // The data retriever that can download serialized rules for one sub-region at
+  // a time.
+  scoped_ptr<Retriever> retriever_;
+
+  // A mapping of data keys (e.g., "data/CA/AB--fr") to information that helps
+  // to parse the response data and place it the correct location in the
+  // rulesets.
+  std::map<std::string, RequestData> requests_;
+
+  // A list of rulesets that are being retrieved and information that is helpful
+  // in parsing and organizing the retrieved data.
+  std::vector<RulesetData*> rulesets_;
+
+  DISALLOW_COPY_AND_ASSIGN(CountryRulesRetriever);
+};
+
+}  // namespace addressinput
+}  // namespace i18n
+
+#endif  // I18N_ADDRESSINPUT_COUNTRY_RULES_RETRIEVER_H_