| // Copyright 2010-2015, Google Inc. |
| // All rights reserved. |
| // |
| // Redistribution and use in source and binary forms, with or without |
| // modification, are permitted provided that the following conditions are |
| // met: |
| // |
| // * Redistributions of source code must retain the above copyright |
| // notice, this list of conditions and the following disclaimer. |
| // * Redistributions in binary form must reproduce the above |
| // copyright notice, this list of conditions and the following disclaimer |
| // in the documentation and/or other materials provided with the |
| // distribution. |
| // * Neither the name of Google Inc. nor the names of its |
| // contributors may be used to endorse or promote products derived from |
| // this software without specific prior written permission. |
| // |
| // THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS |
| // "AS IS" AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT |
| // LIMITED TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR |
| // A PARTICULAR PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT |
| // OWNER OR CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, |
| // SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT |
| // LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, |
| // DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY |
| // THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT |
| // (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE |
| // OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE. |
| |
| #ifndef MOZC_BASE_FILE_STREAM_H_ |
| #define MOZC_BASE_FILE_STREAM_H_ |
| |
| #ifdef MOZC_USE_PEPPER_FILE_IO |
| #include <sstream> |
| #else // MOZC_USE_PEPPER_FILE_IO |
| #include <fstream> |
| #endif // MOZC_USE_PEPPER_FILE_IO |
| |
| namespace mozc { |
| |
| #ifdef MOZC_USE_PEPPER_FILE_IO |
| |
| // Implementation of ifstream for NaCl. |
| // This class reads all of the file using Pepper FileIO and sotres the data in |
| // string_buffer_ when open() is called. This class can't be used in the NaCl |
| // main thread. |
| class InputFileStream : public istream { |
| public: |
| InputFileStream(); |
| explicit InputFileStream(const char* filename, |
| ios_base::openmode mode = ios_base::in); |
| // Opens the file and reads the all data to string_buffer_. |
| void open(const char* filename, ios_base::openmode mode = ios_base::in); |
| // Do nothing. |
| // Note: Error handling after close() is not correctly implemented. |
| // TODO(horo) Implement error handling correctly. |
| void close(); |
| |
| private: |
| stringbuf string_buffer_; |
| }; |
| |
| // Implementation of ofstream for NaCl. |
| // This class writes all of the data to the file using Pepper FileIO in the |
| // destructor or when close() is called. This class can't be used in the NaCl |
| // main thread. |
| class OutputFileStream : public ostream { |
| public: |
| OutputFileStream(); |
| explicit OutputFileStream(const char* filename, |
| ios_base::openmode mode = ios_base::in); |
| ~OutputFileStream(); |
| // Sets filename_. |
| void open(const char* filename, ios_base::openmode mode = ios_base::in); |
| // Write the data to the file using Pepper FileIO. |
| // Note: Error handling after close() is not correctly implemented. |
| // TODO(horo) Implement error handling correctly. |
| void close(); |
| |
| private: |
| string filename_; |
| stringbuf string_buffer_; |
| bool write_done_; |
| }; |
| |
| # else // MOZC_USE_PEPPER_FILE_IO |
| |
| // Represents classes which encapsulates the std::ifstream class (or the |
| // std::ofstream class) to conceal the encodings of its file names. |
| // Linux and Mac use UTF-8 as the encodings for their internationalized file |
| // names. On the other hand, Windows uses UTF-16 for its internationalized file |
| // names. This class conceals such platform-dependent features from other part |
| // of the mozc server. |
| // Since these classes assume an input file is encoded in UTF-8, we have to |
| // change the open() function and convert its encoding for platforms which use |
| // encodings except UTF-8 for internationalized file names. |
| class InputFileStream : public ifstream { |
| public: |
| InputFileStream(); |
| explicit InputFileStream(const char* filename, |
| ios_base::openmode mode = ios_base::in); |
| |
| // Opens the specified file. |
| // This function is a wrapper function for the ifstream::open() function |
| // to change the encoding of the specified file name from UTF-8 to its native |
| // one before calling the ifstream::open() function. |
| void open(const char* filename, ios_base::openmode mode = ios_base::in); |
| }; |
| |
| class OutputFileStream : public ofstream { |
| public: |
| OutputFileStream(); |
| explicit OutputFileStream(const char* filename, |
| ios_base::openmode mode = ios_base::out); |
| |
| // Opens the specified file. |
| // This function is a wrapper function for the ofstream::open() function |
| // to change the encoding of the specified file name from UTF-8 to its native |
| // one before calling the ofstream::open() function. |
| void open(const char* filename, ios_base::openmode mode = ios_base::out); |
| }; |
| #endif // MOZC_USE_PEPPER_FILE_IO |
| |
| } // namespace mozc |
| |
| #endif // MOZC_BASE_FILE_STREAM_H_ |