| // Copyright (C) 2011 The Libphonenumber Authors |
| // |
| // 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. |
| |
| // Author: Philippe Liard |
| |
| #ifndef I18N_PHONENUMBERS_LOGGER_H_ |
| #define I18N_PHONENUMBERS_LOGGER_H_ |
| |
| #include <cstdio> |
| #include <string> |
| |
| namespace i18n { |
| namespace phonenumbers { |
| |
| using std::string; |
| |
| enum LogLevel { |
| LOG_FATAL = 1, |
| LOG_ERROR, |
| LOG_WARNING, |
| LOG_INFO, |
| LOG_DEBUG, |
| }; |
| |
| enum { |
| DFATAL = LOG_FATAL, |
| // ERROR seems to be defined on MSVC, therefore don't overwrite it. |
| #ifndef ERROR |
| ERROR = LOG_ERROR, |
| #endif |
| WARNING = LOG_WARNING, |
| }; |
| |
| // Subclass this abstract class to override the way logging is handled in the |
| // library. You can then call the PhoneNumberUtil::SetLogger() method. |
| class Logger { |
| public: |
| Logger() : level_(LOG_ERROR) {} |
| virtual ~Logger() {} |
| |
| // Writes the message level to the underlying output stream. |
| virtual void WriteLevel() {} |
| // Writes the provided message to the underlying output stream. |
| virtual void WriteMessage(const string& msg) = 0; |
| |
| inline LogLevel level() const { |
| return level_; |
| } |
| |
| inline void set_level(LogLevel level) { |
| level_ = level; |
| } |
| |
| static inline Logger* set_logger_impl(Logger* logger) { |
| impl_ = logger; |
| return logger; |
| } |
| |
| static inline Logger* mutable_logger_impl() { |
| return impl_; |
| } |
| |
| private: |
| static Logger* impl_; |
| LogLevel level_; |
| }; |
| |
| // Logger that does not log anything. It could be useful to "mute" the |
| // phonenumber library. |
| class NullLogger : public Logger { |
| public: |
| virtual ~NullLogger() {} |
| |
| virtual void WriteMessage(const string& /* msg */) {} |
| }; |
| |
| } // namespace phonenumbers |
| } // namespace i18n |
| |
| #endif // I18N_PHONENUMBERS_LOGGER_ADAPTER_H_ |