AlkantarClanX12
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/**
* Single-use utility classes to provide functionality to the {@link Glob}
* methods.
*
* @module
*/
import { Minipass } from 'minipass';
import { Ignore } from './ignore.js';
import { Processor } from './processor.js';
const makeIgnore = (ignore, opts) => typeof ignore === 'string' ? new Ignore([ignore], opts)
: Array.isArray(ignore) ? new Ignore(ignore, opts)
: ignore;
/**
* basic walking utilities that all the glob walker types use
*/
export class GlobUtil {
path;
patterns;
opts;
seen = new Set();
paused = false;
aborted = false;
#onResume = [];
#ignore;
#sep;
signal;
maxDepth;
includeChildMatches;
constructor(patterns, path, opts) {
this.patterns = patterns;
this.path = path;
this.opts = opts;
this.#sep = !opts.posix && opts.platform === 'win32' ? '\\' : '/';
this.includeChildMatches = opts.includeChildMatches !== false;
if (opts.ignore || !this.includeChildMatches) {
this.#ignore = makeIgnore(opts.ignore ?? [], opts);
if (!this.includeChildMatches &&
typeof this.#ignore.add !== 'function') {
const m = 'cannot ignore child matches, ignore lacks add() method.';
throw new Error(m);
}
}
// ignore, always set with maxDepth, but it's optional on the
// GlobOptions type
/* c8 ignore start */
this.maxDepth = opts.maxDepth || Infinity;
/* c8 ignore stop */
if (opts.signal) {
this.signal = opts.signal;
this.signal.addEventListener('abort', () => {
this.#onResume.length = 0;
});
}
}
#ignored(path) {
return this.seen.has(path) || !!this.#ignore?.ignored?.(path);
}
#childrenIgnored(path) {
return !!this.#ignore?.childrenIgnored?.(path);
}
// backpressure mechanism
pause() {
this.paused = true;
}
resume() {
/* c8 ignore start */
if (this.signal?.aborted)
return;
/* c8 ignore stop */
this.paused = false;
let fn = undefined;
while (!this.paused && (fn = this.#onResume.shift())) {
fn();
}
}
onResume(fn) {
if (this.signal?.aborted)
return;
/* c8 ignore start */
if (!this.paused) {
fn();
}
else {
/* c8 ignore stop */
this.#onResume.push(fn);
}
}
// do the requisite realpath/stat checking, and return the path
// to add or undefined to filter it out.
async matchCheck(e, ifDir) {
if (ifDir && this.opts.nodir)
return undefined;
let rpc;
if (this.opts.realpath) {
rpc = e.realpathCached() || (await e.realpath());
if (!rpc)
return undefined;
e = rpc;
}
const needStat = e.isUnknown() || this.opts.stat;
const s = needStat ? await e.lstat() : e;
if (this.opts.follow && this.opts.nodir && s?.isSymbolicLink()) {
const target = await s.realpath();
/* c8 ignore start */
if (target && (target.isUnknown() || this.opts.stat)) {
await target.lstat();
}
/* c8 ignore stop */
}
return this.matchCheckTest(s, ifDir);
}
matchCheckTest(e, ifDir) {
return (e &&
(this.maxDepth === Infinity || e.depth() <= this.maxDepth) &&
(!ifDir || e.canReaddir()) &&
(!this.opts.nodir || !e.isDirectory()) &&
(!this.opts.nodir ||
!this.opts.follow ||
!e.isSymbolicLink() ||
!e.realpathCached()?.isDirectory()) &&
!this.#ignored(e)) ?
e
: undefined;
}
matchCheckSync(e, ifDir) {
if (ifDir && this.opts.nodir)
return undefined;
let rpc;
if (this.opts.realpath) {
rpc = e.realpathCached() || e.realpathSync();
if (!rpc)
return undefined;
e = rpc;
}
const needStat = e.isUnknown() || this.opts.stat;
const s = needStat ? e.lstatSync() : e;
if (this.opts.follow && this.opts.nodir && s?.isSymbolicLink()) {
const target = s.realpathSync();
if (target && (target?.isUnknown() || this.opts.stat)) {
target.lstatSync();
}
}
return this.matchCheckTest(s, ifDir);
}
matchFinish(e, absolute) {
if (this.#ignored(e))
return;
// we know we have an ignore if this is false, but TS doesn't
if (!this.includeChildMatches && this.#ignore?.add) {
const ign = `${e.relativePosix()}/**`;
this.#ignore.add(ign);
}
const abs = this.opts.absolute === undefined ? absolute : this.opts.absolute;
this.seen.add(e);
const mark = this.opts.mark && e.isDirectory() ? this.#sep : '';
// ok, we have what we need!
if (this.opts.withFileTypes) {
this.matchEmit(e);
}
else if (abs) {
const abs = this.opts.posix ? e.fullpathPosix() : e.fullpath();
this.matchEmit(abs + mark);
}
else {
const rel = this.opts.posix ? e.relativePosix() : e.relative();
const pre = this.opts.dotRelative && !rel.startsWith('..' + this.#sep) ?
'.' + this.#sep
: '';
this.matchEmit(!rel ? '.' + mark : pre + rel + mark);
}
}
async match(e, absolute, ifDir) {
const p = await this.matchCheck(e, ifDir);
if (p)
this.matchFinish(p, absolute);
}
matchSync(e, absolute, ifDir) {
const p = this.matchCheckSync(e, ifDir);
if (p)
this.matchFinish(p, absolute);
}
walkCB(target, patterns, cb) {
/* c8 ignore start */
if (this.signal?.aborted)
cb();
/* c8 ignore stop */
this.walkCB2(target, patterns, new Processor(this.opts), cb);
}
walkCB2(target, patterns, processor, cb) {
if (this.#childrenIgnored(target))
return cb();
if (this.signal?.aborted)
cb();
if (this.paused) {
this.onResume(() => this.walkCB2(target, patterns, processor, cb));
return;
}
processor.processPatterns(target, patterns);
// done processing. all of the above is sync, can be abstracted out.
// subwalks is a map of paths to the entry filters they need
// matches is a map of paths to [absolute, ifDir] tuples.
let tasks = 1;
const next = () => {
if (--tasks === 0)
cb();
};
for (const [m, absolute, ifDir] of processor.matches.entries()) {
if (this.#ignored(m))
continue;
tasks++;
this.match(m, absolute, ifDir).then(() => next());
}
for (const t of processor.subwalkTargets()) {
if (this.maxDepth !== Infinity && t.depth() >= this.maxDepth) {
continue;
}
tasks++;
const childrenCached = t.readdirCached();
if (t.calledReaddir())
this.walkCB3(t, childrenCached, processor, next);
else {
t.readdirCB((_, entries) => this.walkCB3(t, entries, processor, next), true);
}
}
next();
}
walkCB3(target, entries, processor, cb) {
processor = processor.filterEntries(target, entries);
let tasks = 1;
const next = () => {
if (--tasks === 0)
cb();
};
for (const [m, absolute, ifDir] of processor.matches.entries()) {
if (this.#ignored(m))
continue;
tasks++;
this.match(m, absolute, ifDir).then(() => next());
}
for (const [target, patterns] of processor.subwalks.entries()) {
tasks++;
this.walkCB2(target, patterns, processor.child(), next);
}
next();
}
walkCBSync(target, patterns, cb) {
/* c8 ignore start */
if (this.signal?.aborted)
cb();
/* c8 ignore stop */
this.walkCB2Sync(target, patterns, new Processor(this.opts), cb);
}
walkCB2Sync(target, patterns, processor, cb) {
if (this.#childrenIgnored(target))
return cb();
if (this.signal?.aborted)
cb();
if (this.paused) {
this.onResume(() => this.walkCB2Sync(target, patterns, processor, cb));
return;
}
processor.processPatterns(target, patterns);
// done processing. all of the above is sync, can be abstracted out.
// subwalks is a map of paths to the entry filters they need
// matches is a map of paths to [absolute, ifDir] tuples.
let tasks = 1;
const next = () => {
if (--tasks === 0)
cb();
};
for (const [m, absolute, ifDir] of processor.matches.entries()) {
if (this.#ignored(m))
continue;
this.matchSync(m, absolute, ifDir);
}
for (const t of processor.subwalkTargets()) {
if (this.maxDepth !== Infinity && t.depth() >= this.maxDepth) {
continue;
}
tasks++;
const children = t.readdirSync();
this.walkCB3Sync(t, children, processor, next);
}
next();
}
walkCB3Sync(target, entries, processor, cb) {
processor = processor.filterEntries(target, entries);
let tasks = 1;
const next = () => {
if (--tasks === 0)
cb();
};
for (const [m, absolute, ifDir] of processor.matches.entries()) {
if (this.#ignored(m))
continue;
this.matchSync(m, absolute, ifDir);
}
for (const [target, patterns] of processor.subwalks.entries()) {
tasks++;
this.walkCB2Sync(target, patterns, processor.child(), next);
}
next();
}
}
export class GlobWalker extends GlobUtil {
matches = new Set();
constructor(patterns, path, opts) {
super(patterns, path, opts);
}
matchEmit(e) {
this.matches.add(e);
}
async walk() {
if (this.signal?.aborted)
throw this.signal.reason;
if (this.path.isUnknown()) {
await this.path.lstat();
}
await new Promise((res, rej) => {
this.walkCB(this.path, this.patterns, () => {
if (this.signal?.aborted) {
rej(this.signal.reason);
}
else {
res(this.matches);
}
});
});
return this.matches;
}
walkSync() {
if (this.signal?.aborted)
throw this.signal.reason;
if (this.path.isUnknown()) {
this.path.lstatSync();
}
// nothing for the callback to do, because this never pauses
this.walkCBSync(this.path, this.patterns, () => {
if (this.signal?.aborted)
throw this.signal.reason;
});
return this.matches;
}
}
export class GlobStream extends GlobUtil {
results;
constructor(patterns, path, opts) {
super(patterns, path, opts);
this.results = new Minipass({
signal: this.signal,
objectMode: true,
});
this.results.on('drain', () => this.resume());
this.results.on('resume', () => this.resume());
}
matchEmit(e) {
this.results.write(e);
if (!this.results.flowing)
this.pause();
}
stream() {
const target = this.path;
if (target.isUnknown()) {
target.lstat().then(() => {
this.walkCB(target, this.patterns, () => this.results.end());
});
}
else {
this.walkCB(target, this.patterns, () => this.results.end());
}
return this.results;
}
streamSync() {
if (this.path.isUnknown()) {
this.path.lstatSync();
}
this.walkCBSync(this.path, this.patterns, () => this.results.end());
return this.results;
}
}
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