add hw2

node_modules/glob/dist/commonjs/walker.js

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+"use strict";
+Object.defineProperty(exports, "__esModule", { value: true });
+exports.GlobStream = exports.GlobWalker = exports.GlobUtil = void 0;
+/**
+ * Single-use utility classes to provide functionality to the {@link Glob}
+ * methods.
+ *
+ * @module
+ */
+const minipass_1 = require("minipass");
+const ignore_js_1 = require("./ignore.js");
+const processor_js_1 = require("./processor.js");
+const makeIgnore = (ignore, opts) => typeof ignore === 'string' ? new ignore_js_1.Ignore([ignore], opts)
+    : Array.isArray(ignore) ? new ignore_js_1.Ignore(ignore, opts)
+        : ignore;
+/**
+ * basic walking utilities that all the glob walker types use
+ */
+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_js_1.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_js_1.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();
+    }
+}
+exports.GlobUtil = GlobUtil;
+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;
+    }
+}
+exports.GlobWalker = GlobWalker;
+class GlobStream extends GlobUtil {
+    results;
+    constructor(patterns, path, opts) {
+        super(patterns, path, opts);
+        this.results = new minipass_1.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;
+    }
+}
+exports.GlobStream = GlobStream;
+//# sourceMappingURL=walker.js.map