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add uniqueDeviceId for id'ing host:device

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joshuaboud 2022-06-28 12:04:55 -03:00
parent 49d44349d5
commit bbac4c0227
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GPG Key ID: 17EFB59E2A8BF50E
2 changed files with 23 additions and 9 deletions
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7
navigator/src/functions/getDirEntryObjects.js
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@ -136,8 +136,10 @@ function parseRawEntryStats(records, cwd, host, failCallback, byteFormatter = co
let [btimeStr, mtimeStr, atimeStr] = [btime, mtime, atime].map(date => date?.toLocaleString() ?? '-');
let [nameHTML, symlinkTargetNameHTML] = [name, symlinkTargetName].map(escapeStringHTML);
mode = parseInt(mode, 8);
const uniqueDeviceId = szudzikPair(hostHash, devId);
return {
uniqueId: szudzikPair(hostHash, devId, inode),
uniqueDeviceId,
uniqueId: szudzikPair(uniqueDeviceId, inode),
devId,
inode,
name,
@ -198,7 +200,8 @@ export default getDirEntryObjects;
* Object representing file system entry
*
* @typedef {Object} DirectoryEntryObj
* @property {BigInt} uniqueId - Unique ID generated from pairing function on [devId, inode]
* @property {BigInt} uniqueDeviceId - Unique ID generated from pairing function on [hostHash, devId]
* @property {BigInt} uniqueId - Unique ID generated from pairing function on [uniqueDeviceId, inode]
* @property {BigInt} devId - Device ID containing the file
* @property {BigInt} inode - The file's inode
* @property {String} name - File/directory name

25
navigator/src/functions/szudzikPair.test.js
View File

@ -90,6 +90,22 @@ describe('Szudzik Pairing', () => {
it('can generate an encoding from two > MAX_SAFE_INT numbers', () => {
expect(szudzikPair(BigInt(Number.MAX_SAFE_INTEGER) + 5n, BigInt(Number.MAX_SAFE_INTEGER) + 10n)).toBe(81129638414606861839774099963998n);
});
it('works with array or nargs', () => {
const input = [1n, 2n, 3n, 4n];
expect(szudzikPair(input)).toEqual(szudzikPair(...input));
});
it('has same result if broken into separate calls', () => {
const input = [532n, 12n, 128n, 40n, 983n];
const expected = szudzikPair(...input);
const a = szudzikPair(szudzikPair(szudzikPair(szudzikPair(input[0], input[1]), input[2]), input[3]), input[4]);
const b = szudzikPair(szudzikPair(szudzikPair(input[0], input[1], input[2]), input[3]), input[4]);
const c = szudzikPair(szudzikPair(input[0], input[1], input[2], input[3]), input[4]);
expect(a).toEqual(expected);
expect(b).toEqual(expected);
expect(c).toEqual(expected);
});
});
describe('szudzikUnpair', () => {
@ -121,19 +137,14 @@ describe('Szudzik Pairing', () => {
}
const encodings = tuples.map(szudzikPair);
describe('has no collisions', () => {
it('has no collisions', () => {
expect((new Set(encodings)).size).toEqual(encodings.length);
});
describe('can be decoded', () => {
it('can be decoded', () => {
const decodings = encodings.map(e => szudzikUnpair(e, 4));
expect(decodings).toEqual(tuples);
});
});
describe('works with array or nargs', () => {
const input = [1n, 2n, 3n, 4n];
expect(szudzikPair(input)).toEqual(szudzikPair(...input));
});
})
});