Patrick Venture | 22e3875 | 2018-11-21 08:52:49 -0800 | [diff] [blame] | 1 | /* |
| 2 | * Copyright 2018 Google Inc. |
| 3 | * |
| 4 | * Licensed under the Apache License, Version 2.0 (the "License"); |
| 5 | * you may not use this file except in compliance with the License. |
| 6 | * You may obtain a copy of the License at |
| 7 | * |
| 8 | * http://www.apache.org/licenses/LICENSE-2.0 |
| 9 | * |
| 10 | * Unless required by applicable law or agreed to in writing, software |
| 11 | * distributed under the License is distributed on an "AS IS" BASIS, |
| 12 | * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied. |
| 13 | * See the License for the specific language governing permissions and |
| 14 | * limitations under the License. |
| 15 | */ |
| 16 | |
Patrick Venture | 64919ec | 2018-11-15 11:52:07 -0800 | [diff] [blame] | 17 | #include "file_handler.hpp" |
| 18 | |
| 19 | #include <cstdint> |
Patrick Venture | 2bd7021 | 2019-03-08 13:14:08 -0800 | [diff] [blame] | 20 | #include <filesystem> |
Patrick Venture | 64919ec | 2018-11-15 11:52:07 -0800 | [diff] [blame] | 21 | #include <memory> |
| 22 | #include <string> |
| 23 | #include <vector> |
| 24 | |
| 25 | namespace blobs |
| 26 | { |
Patrick Venture | 2bd7021 | 2019-03-08 13:14:08 -0800 | [diff] [blame] | 27 | namespace fs = std::filesystem; |
Patrick Venture | 64919ec | 2018-11-15 11:52:07 -0800 | [diff] [blame] | 28 | |
| 29 | bool FileHandler::open(const std::string& path) |
| 30 | { |
| 31 | this->path = path; |
| 32 | |
| 33 | if (file.is_open()) |
| 34 | { |
| 35 | /* This wasn't properly closed somehow. |
| 36 | * TODO: Throw an error or just reset the state? |
| 37 | */ |
| 38 | return false; |
| 39 | } |
| 40 | |
| 41 | /* using ofstream no need to set out */ |
| 42 | file.open(filename, std::ios::binary); |
| 43 | if (file.bad()) |
| 44 | { |
| 45 | /* TODO: Oh no! Care about this. */ |
| 46 | return false; |
| 47 | } |
| 48 | |
| 49 | /* We were able to open the file for staging. |
| 50 | * TODO: We'll need to do other stuff to eventually. |
| 51 | */ |
| 52 | return true; |
| 53 | } |
| 54 | |
| 55 | void FileHandler::close() |
| 56 | { |
| 57 | if (file.is_open()) |
| 58 | { |
| 59 | file.close(); |
| 60 | } |
| 61 | return; |
| 62 | } |
| 63 | |
| 64 | bool FileHandler::write(std::uint32_t offset, |
| 65 | const std::vector<std::uint8_t>& data) |
| 66 | { |
| 67 | if (!file.is_open()) |
| 68 | { |
| 69 | return false; |
| 70 | } |
| 71 | |
| 72 | /* We could track this, but if they write in a scattered method, this is |
| 73 | * easier. |
| 74 | */ |
| 75 | file.seekp(offset, std::ios_base::beg); |
| 76 | if (!file.good()) |
| 77 | { |
| 78 | /* the documentation wasn't super clear on fail vs bad in these cases, |
| 79 | * so let's only be happy with goodness. |
| 80 | */ |
| 81 | return false; |
| 82 | } |
| 83 | |
| 84 | file.write(reinterpret_cast<const char*>(data.data()), data.size()); |
| 85 | if (!file.good()) |
| 86 | { |
| 87 | return false; |
| 88 | } |
| 89 | |
| 90 | return true; |
| 91 | } |
| 92 | |
Patrick Venture | cc7d160 | 2018-11-15 13:58:33 -0800 | [diff] [blame] | 93 | int FileHandler::getSize() |
| 94 | { |
Patrick Venture | 86b49e2 | 2018-11-15 14:29:00 -0800 | [diff] [blame] | 95 | try |
| 96 | { |
| 97 | return static_cast<int>(fs::file_size(filename)); |
| 98 | } |
| 99 | catch (const fs::filesystem_error& e) |
| 100 | { |
| 101 | } |
| 102 | |
Patrick Venture | cc7d160 | 2018-11-15 13:58:33 -0800 | [diff] [blame] | 103 | return 0; |
| 104 | } |
| 105 | |
Patrick Venture | 64919ec | 2018-11-15 11:52:07 -0800 | [diff] [blame] | 106 | } // namespace blobs |