| /** |
| * Licensed to the Apache Software Foundation (ASF) under one |
| * or more contributor license agreements. See the NOTICE file |
| * distributed with this work for additional information |
| * regarding copyright ownership. The ASF licenses this file |
| * to you 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. |
| */ |
| |
| #include "singa/io/reader.h" |
| #include "singa/utils/logging.h" |
| |
| namespace singa { |
| namespace io { |
| bool TextFileReader::Open(const std::string& path) { |
| path_ = path; |
| fdat_.open(path_, std::ios::in); |
| if (!fdat_.is_open()) |
| LOG(WARNING) << "Cannot open file " << path_; |
| return fdat_.is_open(); |
| } |
| |
| void TextFileReader::Close() { |
| if (fdat_.is_open()) fdat_.close(); |
| } |
| |
| bool TextFileReader::Read(std::string* key, std::string* value) { |
| CHECK(fdat_.is_open()) << "File not open!"; |
| key->clear(); |
| value->clear(); |
| if (!std::getline(fdat_, *value)) { |
| if (fdat_.eof()) |
| return false; |
| else |
| LOG(FATAL) << "Error in reading text file"; |
| } |
| *key = std::to_string(lineNo_++); |
| return true; |
| } |
| |
| int TextFileReader::Count() { |
| std::ifstream fin(path_, std::ios::in); |
| CHECK(fin.is_open()) << "Cannot create file " << path_; |
| int count = 0; |
| string line; |
| while (!fin.eof()) { |
| std::getline(fin, line); |
| if (line != "") count++; |
| } |
| fin.close(); |
| return count; |
| } |
| |
| void TextFileReader::SeekToFirst() { |
| CHECK(fdat_.is_open()); |
| lineNo_ = 0; |
| fdat_.clear(); |
| fdat_.seekg(0); |
| } |
| } // namespace io |
| } // namespace singa |