Press n or j to go to the next uncovered block, b, p or k for the previous block.
| 1 2 3 4 5 6 7 8 9 10 11 12 13 14 15 16 17 18 19 20 21 22 23 24 25 26 27 28 29 30 31 32 33 34 35 36 37 38 39 40 41 42 43 44 45 46 47 48 49 50 51 52 53 54 55 56 57 58 59 60 61 62 63 64 65 | 3x 3x 3x 3x 3x 4x 4x 1x 3x 3x 4x 4x 4x 4x 4x 4x 4x 3x 3x 3x 3x 3x | import { access, constants, copyFile, renameSync } from "fs";
import {
WriteFileAndFlushOptions,
writeFileAndFlush,
} from "./writeFileAndFlush";
const BACKUP_EXTENSION = "bak";
const TMP_EXTENSION = "new";
export const backupFile = (
path: string,
callback: (err?: NodeJS.ErrnoException | null) => void
) => {
access(path, constants.F_OK, (err) => {
if (!err) {
return copyFile(path, `${path}.${BACKUP_EXTENSION}`, callback);
}
return callback();
});
};
export const writeFileWithBackup = (
path: string,
data: string | NodeJS.ArrayBufferView,
options: WriteFileAndFlushOptions | BufferEncoding,
callback: (err?: NodeJS.ErrnoException | unknown | null) => void
) => {
return backupFile(path, (backupError) => {
Iif (backupError) {
return callback(backupError);
}
return writeFileAndFlush(
`${path}.${TMP_EXTENSION}`,
data,
options,
(writeError) => {
Iif (writeError) {
return callback(writeError);
}
try {
renameSync(`${path}.new`, path);
} catch (e) {
return callback(e);
}
return callback();
}
);
});
};
export const writeFileWithBackupAsync = (
path: string,
data: string | NodeJS.ArrayBufferView,
options: WriteFileAndFlushOptions | BufferEncoding = "utf8"
) => {
return new Promise<void>((resolve, reject) => {
writeFileWithBackup(path, data, options, (err) => {
Iif (err) {
return reject(err);
}
return resolve();
});
});
};
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