| // 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_MMAP_H_ |
| #define MOZC_BASE_MMAP_H_ |
| |
| #ifdef MOZC_USE_PEPPER_FILE_IO |
| #include <memory> |
| #endif // MOZC_USE_PEPPER_FILE_IO |
| #include <string> |
| |
| #include "base/port.h" |
| |
| namespace mozc { |
| class Mmap { |
| public: |
| Mmap(); |
| ~Mmap() { |
| Close(); |
| } |
| bool Open(const char *filename, const char *mode = "r"); |
| void Close(); |
| |
| #ifndef MOZC_USE_PEPPER_FILE_IO |
| char &operator[](size_t n) { return *(text_ + n); } |
| char operator[](size_t n) const { return *(text_ + n); } |
| char *begin() { return text_; } |
| const char *begin() const { return text_; } |
| char *end() { return text_ + size_; } |
| const char *end() const { return text_ + size_; } |
| #else // MOZC_USE_PEPPER_FILE_IO |
| char &operator[](size_t n) { return *(text_.get() + n); } |
| char operator[](size_t n) const { return *(text_.get() + n); } |
| char *begin() { return text_.get(); } |
| const char *begin() const { return text_.get(); } |
| char *end() { return text_.get() + size_; } |
| const char *end() const { return text_.get() + size_; } |
| #endif // MOZC_USE_PEPPER_FILE_IO |
| |
| size_t size() const { return size_; } |
| |
| #ifdef MOZC_USE_PEPPER_FILE_IO |
| // Save the data in memory to the file. |
| bool SyncToFile(); |
| #endif // MOZC_USE_PEPPER_FILE_IO |
| |
| private: |
| #ifndef MOZC_USE_PEPPER_FILE_IO |
| char *text_; |
| #else // MOZC_USE_PEPPER_FILE_IO |
| string filename_; |
| std::unique_ptr<char[]> text_; |
| bool write_mode_; |
| #endif // MOZC_USE_PEPPER_FILE_IO |
| size_t size_; |
| |
| DISALLOW_COPY_AND_ASSIGN(Mmap); |
| }; |
| } // namespace mozc |
| |
| #endif // MOZC_BASE_MMAP_H_ |