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fs: replace duplicate conditions by a function #18717

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fs: replace duplicate conditions by a function #18717

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24 changes: 12 additions & 12 deletions lib/fs.js
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Original file line number Diff line number Diff line change
Expand Up @@ -179,6 +179,12 @@ function isFd(path) {

fs.Stats = Stats;

function isFileType(fileType) {
// Use stats array directly to avoid creating an fs.Stats instance just for
// our internal use.
return (statValues[1/*mode*/] & S_IFMT) === fileType;
}

// Don't allow mode to accidentally be overwritten.
Object.defineProperties(fs, {
F_OK: { enumerable: true, value: constants.F_OK || 0 },
Expand Down Expand Up @@ -371,10 +377,8 @@ function readFileAfterStat(err) {
if (err)
return context.close(err);

// Use stats array directly to avoid creating an fs.Stats instance just for
// our internal use.
var size;
if ((statValues[1/*mode*/] & S_IFMT) === S_IFREG)
if (isFileType(S_IFREG))
size = context.size = statValues[8];
else
size = context.size = 0;
Expand Down Expand Up @@ -486,10 +490,8 @@ fs.readFileSync = function(path, options) {
var fd = isUserFd ? path : fs.openSync(path, options.flag || 'r', 0o666);

tryStatSync(fd, isUserFd);
// Use stats array directly to avoid creating an fs.Stats instance just for
// our internal use.
var size;
if ((statValues[1/*mode*/] & S_IFMT) === S_IFREG)
if (isFileType(S_IFREG))
size = statValues[8];
else
size = 0;
Expand Down Expand Up @@ -1623,8 +1625,7 @@ fs.realpathSync = function realpathSync(p, options) {

// continue if not a symlink, break if a pipe/socket
if (knownHard[base] || (cache && cache.get(base) === base)) {
if ((statValues[1/*mode*/] & S_IFMT) === S_IFIFO ||
(statValues[1/*mode*/] & S_IFMT) === S_IFSOCK) {
if (isFileType(S_IFIFO) || isFileType(S_IFSOCK)) {
break;
}
continue;
Expand All @@ -1643,7 +1644,7 @@ fs.realpathSync = function realpathSync(p, options) {
binding.lstat(baseLong, undefined, ctx);
handleErrorFromBinding(ctx);

if ((statValues[1/*mode*/] & S_IFMT) !== S_IFLNK) {
if (!isFileType(S_IFLNK)) {
knownHard[base] = true;
if (cache) cache.set(base, base);
continue;
Expand Down Expand Up @@ -1766,8 +1767,7 @@ fs.realpath = function realpath(p, options, callback) {

// continue if not a symlink, break if a pipe/socket
if (knownHard[base]) {
if ((statValues[1/*mode*/] & S_IFMT) === S_IFIFO ||
(statValues[1/*mode*/] & S_IFMT) === S_IFSOCK) {
if (isFileType(S_IFIFO) || isFileType(S_IFSOCK)) {
return callback(null, encodeRealpathResult(p, options));
}
return process.nextTick(LOOP);
Expand All @@ -1783,7 +1783,7 @@ fs.realpath = function realpath(p, options, callback) {
// our internal use.

// if not a symlink, skip to the next path part
if ((statValues[1/*mode*/] & S_IFMT) !== S_IFLNK) {
if (!isFileType(S_IFLNK)) {
knownHard[base] = true;
return process.nextTick(LOOP);
}
Expand Down