| 83 | } |
| 84 | |
| 85 | bool writeArchiveWithBackup(SerializationArchive *archive, const UString &path, bool pack) |
| 86 | { |
| 87 | fs::path savePath = path; |
| 88 | fs::path tempPath; |
| 89 | bool shouldCleanup = false; |
| 90 | try |
| 91 | { |
| 92 | if (!fs::exists(savePath)) |
| 93 | { |
| 94 | return archive->write(path, pack); |
| 95 | } |
| 96 | |
| 97 | // WARNING! Dragons live here! Specifically dragon named miniz who hates windows paths |
| 98 | // (or paths not starting with dot) |
| 99 | // therefore I'm doing gymnastics here to backup and still pass original path string to |
| 100 | // archive write |
| 101 | // that is really bad, because if user clicks exit, save will be renamed to some random |
| 102 | // junk |
| 103 | // however it will still function as regular save file, so maybe not that bad? |
| 104 | fs::path saveDirectory = savePath.parent_path(); |
| 105 | bool haveNewName = false; |
| 106 | for (int retries = 5; retries > 0; retries--) |
| 107 | { |
| 108 | { |
| 109 | tempPath = saveDirectory / |
| 110 | (boost::uuids::to_string(uuids::random_generator()()) + ".save"); |
| 111 | if (!fs::exists(tempPath)) |
| 112 | { |
| 113 | haveNewName = true; |
| 114 | break; |
| 115 | } |
| 116 | } |
| 117 | } |
| 118 | |
| 119 | if (!haveNewName) |
| 120 | { |
| 121 | LogError("Unable to create temporary file at \"%s\"", tempPath.string()); |
| 122 | return false; |
| 123 | } |
| 124 | |
| 125 | fs::rename(savePath, tempPath); |
| 126 | shouldCleanup = true; |
| 127 | bool saveSuccess = archive->write(path, pack); |
| 128 | shouldCleanup = false; |
| 129 | |
| 130 | if (saveSuccess) |
| 131 | { |
| 132 | fs::remove_all(tempPath); |
| 133 | return true; |
| 134 | } |
| 135 | else |
| 136 | { |
| 137 | if (fs::exists(savePath)) |
| 138 | { |
| 139 | fs::remove_all(savePath); |
| 140 | } |
| 141 | |
| 142 | fs::rename(tempPath, savePath); |