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fs: fix opts.filter issue in cpSync #45143

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merged 1 commit into from Nov 1, 2022
Merged

fs: fix opts.filter issue in cpSync #45143

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33 changes: 14 additions & 19 deletions lib/internal/fs/cp/cp-sync.js
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Expand Up @@ -55,12 +55,20 @@ function cpSyncFn(src, dest, opts) {
'node is not recommended';
process.emitWarning(warning, 'TimestampPrecisionWarning');
}
const { srcStat, destStat } = checkPathsSync(src, dest, opts);
const { srcStat, destStat, skipped } = checkPathsSync(src, dest, opts);
if (skipped) return;
checkParentPathsSync(src, srcStat, dest);
return handleFilterAndCopy(destStat, src, dest, opts);
return checkParentDir(destStat, src, dest, opts);
}

function checkPathsSync(src, dest, opts) {
if (opts.filter) {
const shouldCopy = opts.filter(src, dest);
if (isPromise(shouldCopy)) {
throw new ERR_INVALID_RETURN_VALUE('boolean', 'filter', shouldCopy);
}
if (!shouldCopy) return { __proto__: null, skipped: true };
}
const { srcStat, destStat } = getStatsSync(src, dest, opts);

if (destStat) {
Expand Down Expand Up @@ -104,7 +112,7 @@ function checkPathsSync(src, dest, opts) {
code: 'EINVAL',
});
}
return { srcStat, destStat };
return { __proto__: null, srcStat, destStat, skipped: false };
}

function getStatsSync(src, dest, opts) {
Expand Down Expand Up @@ -145,24 +153,12 @@ function checkParentPathsSync(src, srcStat, dest) {
return checkParentPathsSync(src, srcStat, destParent);
}

function handleFilterAndCopy(destStat, src, dest, opts) {
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change the name to make it consistent with cp-async

if (opts.filter) {
const shouldCopy = opts.filter(src, dest);
if (isPromise(shouldCopy)) {
throw new ERR_INVALID_RETURN_VALUE('boolean', 'filter', shouldCopy);
}
if (!shouldCopy) return;
}
function checkParentDir(destStat, src, dest, opts) {
const destParent = dirname(dest);
if (!existsSync(destParent)) mkdirSync(destParent, { recursive: true });
return getStats(destStat, src, dest, opts);
}

function startCopy(destStat, src, dest, opts) {
if (opts.filter && !opts.filter(src, dest)) return;
return getStats(destStat, src, dest, opts);
}

function getStats(destStat, src, dest, opts) {
const statSyncFn = opts.dereference ? statSync : lstatSync;
const srcStat = statSyncFn(src);
Expand Down Expand Up @@ -284,9 +280,8 @@ function copyDir(src, dest, opts) {
const { name } = dirent;
const srcItem = join(src, name);
const destItem = join(dest, name);
const { destStat } = checkPathsSync(srcItem, destItem, opts);

startCopy(destStat, srcItem, destItem, opts);
const { destStat, skipped } = checkPathsSync(srcItem, destItem, opts);
if (!skipped) getStats(destStat, srcItem, destItem, opts);
}
} finally {
dir.closeSync();
Expand Down
22 changes: 13 additions & 9 deletions test/parallel/test-fs-cp.mjs
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Expand Up @@ -746,24 +746,26 @@ if (!isWindows) {
}));
}

// Copy async should not throw exception if child folder is filtered out.
// Copy should not throw exception if child folder is filtered out.
{
const src = nextdir();
mkdirSync(join(src, 'test-cp-async'), mustNotMutateObjectDeep({ recursive: true }));
mkdirSync(join(src, 'test-cp'), mustNotMutateObjectDeep({ recursive: true }));

const dest = nextdir();
mkdirSync(dest, mustNotMutateObjectDeep({ recursive: true }));
writeFileSync(join(dest, 'test-cp-async'), 'test-content', mustNotMutateObjectDeep({ mode: 0o444 }));
writeFileSync(join(dest, 'test-cp'), 'test-content', mustNotMutateObjectDeep({ mode: 0o444 }));

cp(src, dest, {
filter: (path) => !path.includes('test-cp-async'),
const opts = {
filter: (path) => !path.includes('test-cp'),
recursive: true,
}, mustCall((err) => {
};
cp(src, dest, opts, mustCall((err) => {
assert.strictEqual(err, null);
}));
cpSync(src, dest, opts);
}

// Copy async should not throw exception if dest is invalid but filtered out.
// Copy should not throw exception if dest is invalid but filtered out.
{
// Create dest as a file.
// Expect: cp skips the copy logic entirely and won't throw any exception in path validation process.
Expand All @@ -775,12 +777,14 @@ if (!isWindows) {
mkdirSync(destParent, mustNotMutateObjectDeep({ recursive: true }));
writeFileSync(dest, 'test-content', mustNotMutateObjectDeep({ mode: 0o444 }));

cp(src, dest, {
const opts = {
filter: (path) => !path.includes('bar'),
recursive: true,
}, mustCall((err) => {
};
cp(src, dest, opts, mustCall((err) => {
assert.strictEqual(err, null);
}));
cpSync(src, dest, opts);
}

// It throws if options is not object.
Expand Down