Expose posix realpath on windows as well
This commit is contained in:
isaacs
parent
60b45dcbb6
commit
6332a4cf00
346
lib/fs.js
346
lib/fs.js
@ -893,222 +893,184 @@ fs.unwatchFile = function(filename) {
|
|||||||
|
|
||||||
var normalize = pathModule.normalize;
|
var normalize = pathModule.normalize;
|
||||||
|
|
||||||
if (isWindows) {
|
// Regexp that finds the next partion of a (partial) path
|
||||||
// Node doesn't support symlinks / lstat on windows. Hence realpath is just
|
// result is [base_with_slash, base], e.g. ['somedir/', 'somedir']
|
||||||
// the same as path.resolve that fails if the path doesn't exists.
|
var nextPartRe = /(.*?)(?:[\/]+|$)/g;
|
||||||
|
|
||||||
// windows version
|
fs.realpathSync = function realpathSync(p, cache) {
|
||||||
fs.realpathSync = function realpathSync(p, cache) {
|
// make p is absolute
|
||||||
p = pathModule.resolve(p);
|
p = pathModule.resolve(p);
|
||||||
if (cache && Object.prototype.hasOwnProperty.call(cache, p)) {
|
|
||||||
return cache[p];
|
|
||||||
}
|
|
||||||
fs.statSync(p);
|
|
||||||
if (cache) cache[p] = p;
|
|
||||||
return p;
|
|
||||||
};
|
|
||||||
|
|
||||||
// windows version
|
if (cache && Object.prototype.hasOwnProperty.call(cache, p)) {
|
||||||
fs.realpath = function(p, cache, cb) {
|
return cache[p];
|
||||||
if (typeof cb !== 'function') {
|
}
|
||||||
cb = cache;
|
|
||||||
cache = null;
|
|
||||||
}
|
|
||||||
p = pathModule.resolve(p);
|
|
||||||
if (cache && Object.prototype.hasOwnProperty.call(cache, p)) {
|
|
||||||
return cb(null, cache[p]);
|
|
||||||
}
|
|
||||||
fs.stat(p, function(err) {
|
|
||||||
if (err) return cb(err);
|
|
||||||
if (cache) cache[p] = p;
|
|
||||||
cb(null, p);
|
|
||||||
});
|
|
||||||
};
|
|
||||||
|
|
||||||
|
var original = p,
|
||||||
|
seenLinks = {},
|
||||||
|
knownHard = {};
|
||||||
|
|
||||||
} else /* posix */ {
|
// current character position in p
|
||||||
|
var pos = 0;
|
||||||
|
// the partial path so far, including a trailing slash if any
|
||||||
|
var current = '';
|
||||||
|
// the partial path without a trailing slash
|
||||||
|
var base = '';
|
||||||
|
// the partial path scanned in the previous round, with slash
|
||||||
|
var previous = '';
|
||||||
|
|
||||||
// Regexp that finds the next partion of a (partial) path
|
// walk down the path, swapping out linked pathparts for their real
|
||||||
// result is [base_with_slash, base], e.g. ['somedir/', 'somedir']
|
// values
|
||||||
var nextPartRe = /(.*?)(?:[\/]+|$)/g;
|
// NB: p.length changes.
|
||||||
|
while (pos < p.length) {
|
||||||
|
// find the next part
|
||||||
|
nextPartRe.lastIndex = pos;
|
||||||
|
var result = nextPartRe.exec(p);
|
||||||
|
previous = current;
|
||||||
|
current += result[0];
|
||||||
|
base = previous + result[1];
|
||||||
|
pos = nextPartRe.lastIndex;
|
||||||
|
|
||||||
// posix version
|
// continue if not a symlink, or if root
|
||||||
fs.realpathSync = function realpathSync(p, cache) {
|
if (!base || knownHard[base] || (cache && cache[base] === base)) {
|
||||||
// make p is absolute
|
continue;
|
||||||
p = pathModule.resolve(p);
|
|
||||||
|
|
||||||
if (cache && Object.prototype.hasOwnProperty.call(cache, p)) {
|
|
||||||
return cache[p];
|
|
||||||
}
|
}
|
||||||
|
|
||||||
var original = p,
|
var resolvedLink;
|
||||||
seenLinks = {},
|
if (cache && Object.prototype.hasOwnProperty.call(cache, base)) {
|
||||||
knownHard = {};
|
// some known symbolic link. no need to stat again.
|
||||||
|
resolvedLink = cache[base];
|
||||||
// current character position in p
|
} else {
|
||||||
var pos = 0;
|
var stat = fs.lstatSync(base);
|
||||||
// the partial path so far, including a trailing slash if any
|
|
||||||
var current = '';
|
|
||||||
// the partial path without a trailing slash
|
|
||||||
var base = '';
|
|
||||||
// the partial path scanned in the previous round, with slash
|
|
||||||
var previous = '';
|
|
||||||
|
|
||||||
// walk down the path, swapping out linked pathparts for their real
|
|
||||||
// values
|
|
||||||
// NB: p.length changes.
|
|
||||||
while (pos < p.length) {
|
|
||||||
// find the next part
|
|
||||||
nextPartRe.lastIndex = pos;
|
|
||||||
var result = nextPartRe.exec(p);
|
|
||||||
previous = current;
|
|
||||||
current += result[0];
|
|
||||||
base = previous + result[1];
|
|
||||||
pos = nextPartRe.lastIndex;
|
|
||||||
|
|
||||||
// continue if not a symlink, or if root
|
|
||||||
if (!base || knownHard[base] || (cache && cache[base] === base)) {
|
|
||||||
continue;
|
|
||||||
}
|
|
||||||
|
|
||||||
var resolvedLink;
|
|
||||||
if (cache && Object.prototype.hasOwnProperty.call(cache, base)) {
|
|
||||||
// some known symbolic link. no need to stat again.
|
|
||||||
resolvedLink = cache[base];
|
|
||||||
} else {
|
|
||||||
var stat = fs.lstatSync(base);
|
|
||||||
if (!stat.isSymbolicLink()) {
|
|
||||||
knownHard[base] = true;
|
|
||||||
if (cache) cache[base] = base;
|
|
||||||
continue;
|
|
||||||
}
|
|
||||||
|
|
||||||
// read the link if it wasn't read before
|
|
||||||
var id = stat.dev.toString(32) + ':' + stat.ino.toString(32);
|
|
||||||
if (!seenLinks[id]) {
|
|
||||||
fs.statSync(base);
|
|
||||||
seenLinks[id] = fs.readlinkSync(base);
|
|
||||||
resolvedLink = pathModule.resolve(previous, seenLinks[id]);
|
|
||||||
// track this, if given a cache.
|
|
||||||
if (cache) cache[base] = resolvedLink;
|
|
||||||
}
|
|
||||||
}
|
|
||||||
|
|
||||||
// resolve the link, then start over
|
|
||||||
p = pathModule.resolve(resolvedLink, p.slice(pos));
|
|
||||||
pos = 0;
|
|
||||||
previous = base = current = '';
|
|
||||||
}
|
|
||||||
|
|
||||||
if (cache) cache[original] = p;
|
|
||||||
|
|
||||||
return p;
|
|
||||||
};
|
|
||||||
|
|
||||||
|
|
||||||
// posix version
|
|
||||||
fs.realpath = function realpath(p, cache, cb) {
|
|
||||||
if (typeof cb !== 'function') {
|
|
||||||
cb = cache;
|
|
||||||
cache = null;
|
|
||||||
}
|
|
||||||
|
|
||||||
// make p is absolute
|
|
||||||
p = pathModule.resolve(p);
|
|
||||||
|
|
||||||
if (cache && Object.prototype.hasOwnProperty.call(cache, p)) {
|
|
||||||
return cb(null, cache[p]);
|
|
||||||
}
|
|
||||||
|
|
||||||
var original = p,
|
|
||||||
seenLinks = {},
|
|
||||||
knownHard = {};
|
|
||||||
|
|
||||||
// current character position in p
|
|
||||||
var pos = 0;
|
|
||||||
// the partial path so far, including a trailing slash if any
|
|
||||||
var current = '';
|
|
||||||
// the partial path without a trailing slash
|
|
||||||
var base = '';
|
|
||||||
// the partial path scanned in the previous round, with slash
|
|
||||||
var previous = '';
|
|
||||||
|
|
||||||
// walk down the path, swapping out linked pathparts for their real
|
|
||||||
// values
|
|
||||||
LOOP();
|
|
||||||
function LOOP() {
|
|
||||||
// stop if scanned past end of path
|
|
||||||
if (pos >= p.length) {
|
|
||||||
if (cache) cache[original] = p;
|
|
||||||
return cb(null, p);
|
|
||||||
}
|
|
||||||
|
|
||||||
// find the next part
|
|
||||||
nextPartRe.lastIndex = pos;
|
|
||||||
var result = nextPartRe.exec(p);
|
|
||||||
previous = current;
|
|
||||||
current += result[0];
|
|
||||||
base = previous + result[1];
|
|
||||||
pos = nextPartRe.lastIndex;
|
|
||||||
|
|
||||||
// continue if known to be hard or if root or in cache already.
|
|
||||||
if (!base || knownHard[base] || (cache && cache[base] === base)) {
|
|
||||||
return process.nextTick(LOOP);
|
|
||||||
}
|
|
||||||
|
|
||||||
if (cache && Object.prototype.hasOwnProperty.call(cache, base)) {
|
|
||||||
// known symbolic link. no need to stat again.
|
|
||||||
return gotResolvedLink(cache[base]);
|
|
||||||
}
|
|
||||||
|
|
||||||
return fs.lstat(base, gotStat);
|
|
||||||
}
|
|
||||||
|
|
||||||
function gotStat(err, stat) {
|
|
||||||
if (err) return cb(err);
|
|
||||||
|
|
||||||
// if not a symlink, skip to the next path part
|
|
||||||
if (!stat.isSymbolicLink()) {
|
if (!stat.isSymbolicLink()) {
|
||||||
knownHard[base] = true;
|
knownHard[base] = true;
|
||||||
if (cache) cache[base] = base;
|
if (cache) cache[base] = base;
|
||||||
return process.nextTick(LOOP);
|
continue;
|
||||||
}
|
}
|
||||||
|
|
||||||
// stat & read the link if not read before
|
// read the link if it wasn't read before
|
||||||
// call gotTarget as soon as the link target is known
|
|
||||||
var id = stat.dev.toString(32) + ':' + stat.ino.toString(32);
|
var id = stat.dev.toString(32) + ':' + stat.ino.toString(32);
|
||||||
if (seenLinks[id]) {
|
if (!seenLinks[id]) {
|
||||||
return gotTarget(null, seenLinks[id], base);
|
fs.statSync(base);
|
||||||
|
seenLinks[id] = fs.readlinkSync(base);
|
||||||
|
resolvedLink = pathModule.resolve(previous, seenLinks[id]);
|
||||||
|
// track this, if given a cache.
|
||||||
|
if (cache) cache[base] = resolvedLink;
|
||||||
}
|
}
|
||||||
fs.stat(base, function(err) {
|
|
||||||
if (err) return cb(err);
|
|
||||||
|
|
||||||
fs.readlink(base, function(err, target) {
|
|
||||||
gotTarget(err, seenLinks[id] = target);
|
|
||||||
});
|
|
||||||
});
|
|
||||||
}
|
}
|
||||||
|
|
||||||
function gotTarget(err, target, base) {
|
// resolve the link, then start over
|
||||||
if (err) return cb(err);
|
p = pathModule.resolve(resolvedLink, p.slice(pos));
|
||||||
|
pos = 0;
|
||||||
|
previous = base = current = '';
|
||||||
|
}
|
||||||
|
|
||||||
var resolvedLink = pathModule.resolve(previous, target);
|
if (cache) cache[original] = p;
|
||||||
if (cache) cache[base] = resolvedLink;
|
|
||||||
gotResolvedLink(resolvedLink);
|
return p;
|
||||||
|
};
|
||||||
|
|
||||||
|
|
||||||
|
fs.realpath = function realpath(p, cache, cb) {
|
||||||
|
if (typeof cb !== 'function') {
|
||||||
|
cb = cache;
|
||||||
|
cache = null;
|
||||||
|
}
|
||||||
|
|
||||||
|
// make p is absolute
|
||||||
|
p = pathModule.resolve(p);
|
||||||
|
|
||||||
|
if (cache && Object.prototype.hasOwnProperty.call(cache, p)) {
|
||||||
|
return cb(null, cache[p]);
|
||||||
|
}
|
||||||
|
|
||||||
|
var original = p,
|
||||||
|
seenLinks = {},
|
||||||
|
knownHard = {};
|
||||||
|
|
||||||
|
// current character position in p
|
||||||
|
var pos = 0;
|
||||||
|
// the partial path so far, including a trailing slash if any
|
||||||
|
var current = '';
|
||||||
|
// the partial path without a trailing slash
|
||||||
|
var base = '';
|
||||||
|
// the partial path scanned in the previous round, with slash
|
||||||
|
var previous = '';
|
||||||
|
|
||||||
|
// walk down the path, swapping out linked pathparts for their real
|
||||||
|
// values
|
||||||
|
LOOP();
|
||||||
|
function LOOP() {
|
||||||
|
// stop if scanned past end of path
|
||||||
|
if (pos >= p.length) {
|
||||||
|
if (cache) cache[original] = p;
|
||||||
|
return cb(null, p);
|
||||||
}
|
}
|
||||||
|
|
||||||
function gotResolvedLink(resolvedLink) {
|
// find the next part
|
||||||
|
nextPartRe.lastIndex = pos;
|
||||||
// resolve the link, then start over
|
var result = nextPartRe.exec(p);
|
||||||
p = pathModule.resolve(resolvedLink, p.slice(pos));
|
previous = current;
|
||||||
pos = 0;
|
current += result[0];
|
||||||
previous = base = current = '';
|
base = previous + result[1];
|
||||||
|
pos = nextPartRe.lastIndex;
|
||||||
|
|
||||||
|
// continue if known to be hard or if root or in cache already.
|
||||||
|
if (!base || knownHard[base] || (cache && cache[base] === base)) {
|
||||||
return process.nextTick(LOOP);
|
return process.nextTick(LOOP);
|
||||||
}
|
}
|
||||||
};
|
|
||||||
|
|
||||||
}
|
if (cache && Object.prototype.hasOwnProperty.call(cache, base)) {
|
||||||
|
// known symbolic link. no need to stat again.
|
||||||
|
return gotResolvedLink(cache[base]);
|
||||||
|
}
|
||||||
|
|
||||||
|
return fs.lstat(base, gotStat);
|
||||||
|
}
|
||||||
|
|
||||||
|
function gotStat(err, stat) {
|
||||||
|
if (err) return cb(err);
|
||||||
|
|
||||||
|
// if not a symlink, skip to the next path part
|
||||||
|
if (!stat.isSymbolicLink()) {
|
||||||
|
knownHard[base] = true;
|
||||||
|
if (cache) cache[base] = base;
|
||||||
|
return process.nextTick(LOOP);
|
||||||
|
}
|
||||||
|
|
||||||
|
// stat & read the link if not read before
|
||||||
|
// call gotTarget as soon as the link target is known
|
||||||
|
var id = stat.dev.toString(32) + ':' + stat.ino.toString(32);
|
||||||
|
if (seenLinks[id]) {
|
||||||
|
return gotTarget(null, seenLinks[id], base);
|
||||||
|
}
|
||||||
|
fs.stat(base, function(err) {
|
||||||
|
if (err) return cb(err);
|
||||||
|
|
||||||
|
fs.readlink(base, function(err, target) {
|
||||||
|
gotTarget(err, seenLinks[id] = target);
|
||||||
|
});
|
||||||
|
});
|
||||||
|
}
|
||||||
|
|
||||||
|
function gotTarget(err, target, base) {
|
||||||
|
if (err) return cb(err);
|
||||||
|
|
||||||
|
var resolvedLink = pathModule.resolve(previous, target);
|
||||||
|
if (cache) cache[base] = resolvedLink;
|
||||||
|
gotResolvedLink(resolvedLink);
|
||||||
|
}
|
||||||
|
|
||||||
|
function gotResolvedLink(resolvedLink) {
|
||||||
|
|
||||||
|
// resolve the link, then start over
|
||||||
|
p = pathModule.resolve(resolvedLink, p.slice(pos));
|
||||||
|
pos = 0;
|
||||||
|
previous = base = current = '';
|
||||||
|
|
||||||
|
return process.nextTick(LOOP);
|
||||||
|
}
|
||||||
|
};
|
||||||
|
|
||||||
|
|
||||||
|
|
||||||
var pool;
|
var pool;
|
||||||
|
|||||||
Loading…
x
Reference in New Issue
Block a user