| // 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. |
| |
| #include "base/multifile.h" |
| |
| #include "base/logging.h" |
| #include "base/util.h" |
| |
| namespace mozc { |
| |
| InputMultiFile::InputMultiFile(const string &filenames, ios_base::openmode mode) |
| : mode_(mode) { |
| Util::SplitStringUsing(filenames, ",", &filenames_); |
| next_iter_ = filenames_.begin(); |
| if (next_iter_ != filenames_.end()) { |
| OpenNext(); |
| } else { |
| LOG(ERROR) << "empty filenames"; |
| } |
| } |
| |
| InputMultiFile::~InputMultiFile() { |
| ifs_.reset(NULL); |
| } |
| |
| bool InputMultiFile::ReadLine(string* line) { |
| if (ifs_.get() == NULL) { |
| return false; |
| } |
| do { |
| if (!getline(*ifs_, *line).fail()) { |
| return true; |
| } |
| } while (OpenNext()); |
| return false; |
| } |
| |
| bool InputMultiFile::OpenNext() { |
| while (next_iter_ != filenames_.end()) { |
| const char *filename = next_iter_->c_str(); |
| ifs_.reset(new InputFileStream(filename, mode_)); |
| ++next_iter_; |
| if (!ifs_->fail()) { |
| return true; |
| } |
| LOG(ERROR) << "Cannot open " << filename << endl; |
| } |
| ifs_.reset(); |
| return false; |
| } |
| |
| } // namespace mozc |