| // 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. |
| |
| #ifndef I18N_ADDRESSINPUT_UTIL_JSON_H_ |
| #define I18N_ADDRESSINPUT_UTIL_JSON_H_ |
| |
| #include <libaddressinput/util/basictypes.h> |
| |
| #include <memory> |
| #include <string> |
| #include <vector> |
| |
| namespace i18n { |
| namespace addressinput { |
| |
| // Parses a JSON dictionary of strings. Sample usage: |
| // Json json; |
| // if (json.ParseObject("{'key1':'value1', 'key2':'value2'}") && |
| // json.HasStringKey("key1")) { |
| // Process(json.GetStringValueForKey("key1")); |
| // } |
| class Json { |
| public: |
| Json(); |
| ~Json(); |
| |
| // Parses the |json| string and returns true if |json| is valid and it is an |
| // object. |
| bool ParseObject(const std::string& json); |
| |
| // Returns the list of sub dictionaries. The JSON object must be parsed |
| // successfully in ParseObject() before invoking this method. The caller does |
| // not own the result. |
| const std::vector<const Json*>& GetSubDictionaries() const; |
| |
| // Returns true if the parsed JSON contains a string value for |key|. Sets |
| // |value| to the string value of the |key|. The JSON object must be parsed |
| // successfully in ParseObject() before invoking this method. The |value| |
| // parameter should not be nullptr. |
| bool GetStringValueForKey(const std::string& key, std::string* value) const; |
| |
| private: |
| class JsonImpl; |
| friend class JsonImpl; |
| |
| // Constructor to be called by JsonImpl. |
| explicit Json(JsonImpl* impl); |
| |
| std::unique_ptr<JsonImpl> impl_; |
| |
| DISALLOW_COPY_AND_ASSIGN(Json); |
| }; |
| |
| } // namespace addressinput |
| } // namespace i18n |
| |
| #endif // I18N_ADDRESSINPUT_UTIL_JSON_H_ |