| /* |
| * Copyright (C) 2016 The Android Open Source Project |
| * |
| * 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. |
| */ |
| #include "file_reader.h" |
| |
| #include <fcntl.h> |
| #include <unistd.h> |
| #include <sstream> |
| |
| namespace profiler { |
| |
| bool FileReader::Read(const std::string &file_path, |
| std::vector<std::string> *lines) { |
| std::string content; |
| if (Read(file_path, &content)) { |
| std::stringstream stream(content); |
| std::string line; |
| // Check if the last line with no eol-char trailing works |
| while (std::getline(stream, line)) { |
| lines->push_back(line); |
| } |
| return true; |
| } |
| return false; |
| } |
| |
| bool FileReader::Read(const std::string &file_path, std::string *content) { |
| int file = open(file_path.c_str(), O_RDONLY); |
| if (file == -1) { |
| return false; |
| } |
| char buffer[kBufferSize_]; |
| off_t offset = 0; |
| ssize_t read_size; |
| content->erase(); |
| while ((read_size = pread(file, buffer, kBufferSize_, offset)) > 0) { |
| offset += read_size; |
| content->append(buffer, read_size); |
| } |
| close(file); |
| return true; |
| } |
| |
| } // namespace profiler |