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processor.js

// synchronous utility for filtering entries and calculating subwalks
import { GLOBSTAR } from 'minimatch';
/**
 * A cache of which patterns have been processed for a given Path
 */
export class HasWalkedCache {
    store;
    constructor(store = new Map()) {
        this.store = store;
    }
    copy() {
        return new HasWalkedCache(new Map(this.store));
    }
    hasWalked(target, pattern) {
        return this.store.get(target.fullpath())?.has(pattern.globString());
    }
    storeWalked(target, pattern) {
        const fullpath = target.fullpath();
        const cached = this.store.get(fullpath);
        if (cached)
            cached.add(pattern.globString());
        else
            this.store.set(fullpath, new Set([pattern.globString()]));
    }
}
/**
 * A record of which paths have been matched in a given walk step,
 * and whether they only are considered a match if they are a directory,
 * and whether their absolute or relative path should be returned.
 */
export class MatchRecord {
    store = new Map();
    add(target, absolute, ifDir) {
        const n = (absolute ? 2 : 0) | (ifDir ? 1 : 0);
        const current = this.store.get(target);
        this.store.set(target, current === undefined ? n : n & current);
    }
    // match, absolute, ifdir
    entries() {
        return [...this.store.entries()].map(([path, n]) => [
            path,
            !!(n & 2),
            !!(n & 1),
        ]);
    }
}
/**
 * A collection of patterns that must be processed in a subsequent step
 * for a given path.
 */
export class SubWalks {
    store = new Map();
    add(target, pattern) {
        if (!target.canReaddir()) {
            return;
        }
        const subs = this.store.get(target);
        if (subs) {
            if (!subs.find(p => p.globString() === pattern.globString())) {
                subs.push(pattern);
            }
        }
        else
            this.store.set(target, [pattern]);
    }
    get(target) {
        const subs = this.store.get(target);
        /* c8 ignore start */
        if (!subs) {
            throw new Error('attempting to walk unknown path');
        }
        /* c8 ignore stop */
        return subs;
    }
    entries() {
        return this.keys().map(k => [k, this.store.get(k)]);
    }
    keys() {
        return [...this.store.keys()].filter(t => t.canReaddir());
    }
}
/**
 * The class that processes patterns for a given path.
 *
 * Handles child entry filtering, and determining whether a path's
 * directory contents must be read.
 */
export class Processor {
    hasWalkedCache;
    matches = new MatchRecord();
    subwalks = new SubWalks();
    patterns;
    follow;
    dot;
    opts;
    constructor(opts, hasWalkedCache) {
        this.opts = opts;
        this.follow = !!opts.follow;
        this.dot = !!opts.dot;
        this.hasWalkedCache = hasWalkedCache
            ? hasWalkedCache.copy()
            : new HasWalkedCache();
    }
    processPatterns(target, patterns) {
        this.patterns = patterns;
        const processingSet = patterns.map(p => [target, p]);
        // map of paths to the magic-starting subwalks they need to walk
        // first item in patterns is the filter
        for (let [t, pattern] of processingSet) {
            this.hasWalkedCache.storeWalked(t, pattern);
            const root = pattern.root();
            const absolute = pattern.isAbsolute() && this.opts.absolute !== false;
            // start absolute patterns at root
            if (root) {
                t = t.resolve(root === '/' && this.opts.root !== undefined
                    ? this.opts.root
                    : root);
                const rest = pattern.rest();
                if (!rest) {
                    this.matches.add(t, true, false);
                    continue;
                }
                else {
                    pattern = rest;
                }
            }
            if (t.isENOENT())
                continue;
            let p;
            let rest;
            let changed = false;
            while (typeof (p = pattern.pattern()) === 'string' &&
                (rest = pattern.rest())) {
                const c = t.resolve(p);
                // we can be reasonably sure that .. is a readable dir
                if (c.isUnknown() && p !== '..')
                    break;
                t = c;
                pattern = rest;
                changed = true;
            }
            p = pattern.pattern();
            rest = pattern.rest();
            if (changed) {
                if (this.hasWalkedCache.hasWalked(t, pattern))
                    continue;
                this.hasWalkedCache.storeWalked(t, pattern);
            }
            // now we have either a final string for a known entry,
            // more strings for an unknown entry,
            // or a pattern starting with magic, mounted on t.
            if (typeof p === 'string') {
                // must be final entry
                if (!rest) {
                    const ifDir = p === '..' || p === '' || p === '.';
                    this.matches.add(t.resolve(p), absolute, ifDir);
                }
                else {
                    this.subwalks.add(t, pattern);
                }
                continue;
            }
            else if (p === GLOBSTAR) {
                // if no rest, match and subwalk pattern
                // if rest, process rest and subwalk pattern
                // if it's a symlink, but we didn't get here by way of a
                // globstar match (meaning it's the first time THIS globstar
                // has traversed a symlink), then we follow it. Otherwise, stop.
                if (!t.isSymbolicLink() ||
                    this.follow ||
                    pattern.checkFollowGlobstar()) {
                    this.subwalks.add(t, pattern);
                }
                const rp = rest?.pattern();
                const rrest = rest?.rest();
                if (!rest || ((rp === '' || rp === '.') && !rrest)) {
                    // only HAS to be a dir if it ends in **/ or **/.
                    // but ending in ** will match files as well.
                    this.matches.add(t, absolute, rp === '' || rp === '.');
                }
                else {
                    if (rp === '..') {
                        // this would mean you're matching **/.. at the fs root,
                        // and no thanks, I'm not gonna test that specific case.
                        /* c8 ignore start */
                        const tp = t.parent || t;
                        /* c8 ignore stop */
                        if (!rrest)
                            this.matches.add(tp, absolute, true);
                        else if (!this.hasWalkedCache.hasWalked(tp, rrest)) {
                            this.subwalks.add(tp, rrest);
                        }
                    }
                }
            }
            else if (p instanceof RegExp) {
                this.subwalks.add(t, pattern);
            }
        }
        return this;
    }
    subwalkTargets() {
        return this.subwalks.keys();
    }
    child() {
        return new Processor(this.opts, this.hasWalkedCache);
    }
    // return a new Processor containing the subwalks for each
    // child entry, and a set of matches, and
    // a hasWalkedCache that's a copy of this one
    // then we're going to call
    filterEntries(parent, entries) {
        const patterns = this.subwalks.get(parent);
        // put matches and entry walks into the results processor
        const results = this.child();
        for (const e of entries) {
            for (const pattern of patterns) {
                const absolute = pattern.isAbsolute();
                const p = pattern.pattern();
                const rest = pattern.rest();
                if (p === GLOBSTAR) {
                    results.testGlobstar(e, pattern, rest, absolute);
                }
                else if (p instanceof RegExp) {
                    results.testRegExp(e, p, rest, absolute);
                }
                else {
                    results.testString(e, p, rest, absolute);
                }
            }
        }
        return results;
    }
    testGlobstar(e, pattern, rest, absolute) {
        if (this.dot || !e.name.startsWith('.')) {
            if (!pattern.hasMore()) {
                this.matches.add(e, absolute, false);
            }
            if (e.canReaddir()) {
                // if we're in follow mode or it's not a symlink, just keep
                // testing the same pattern. If there's more after the globstar,
                // then this symlink consumes the globstar. If not, then we can
                // follow at most ONE symlink along the way, so we mark it, which
                // also checks to ensure that it wasn't already marked.
                if (this.follow || !e.isSymbolicLink()) {
                    this.subwalks.add(e, pattern);
                }
                else if (e.isSymbolicLink()) {
                    if (rest && pattern.checkFollowGlobstar()) {
                        this.subwalks.add(e, rest);
                    }
                    else if (pattern.markFollowGlobstar()) {
                        this.subwalks.add(e, pattern);
                    }
                }
            }
        }
        // if the NEXT thing matches this entry, then also add
        // the rest.
        if (rest) {
            const rp = rest.pattern();
            if (typeof rp === 'string' &&
                // dots and empty were handled already
                rp !== '..' &&
                rp !== '' &&
                rp !== '.') {
                this.testString(e, rp, rest.rest(), absolute);
            }
            else if (rp === '..') {
                /* c8 ignore start */
                const ep = e.parent || e;
                /* c8 ignore stop */
                this.subwalks.add(ep, rest);
            }
            else if (rp instanceof RegExp) {
                this.testRegExp(e, rp, rest.rest(), absolute);
            }
        }
    }
    testRegExp(e, p, rest, absolute) {
        if (!p.test(e.name))
            return;
        if (!rest) {
            this.matches.add(e, absolute, false);
        }
        else {
            this.subwalks.add(e, rest);
        }
    }
    testString(e, p, rest, absolute) {
        // should never happen?
        if (!e.isNamed(p))
            return;
        if (!rest) {
            this.matches.add(e, absolute, false);
        }
        else {
            this.subwalks.add(e, rest);
        }
    }
}
//# sourceMappingURL=processor.js.map

Name	Type	Size	Owner/Group	Permission	Last Modified	Actions
.	dir	-	root/root	drwxr-xr-x	2025-05-26 05:18:04
..	dir	-	root/root	drwxr-xr-x	2025-05-26 05:18:04
glob.js	text/x-java	7.18 KB	root/root	-rw-r--r--	2023-12-06 06:49:34
has-magic.js	text/x-java	917 B	root/root	-rw-r--r--	2023-12-06 06:49:34
ignore.js	text/x-java	3.54 KB	root/root	-rw-r--r--	2023-12-06 06:49:34
index.js	text/x-java	1.59 KB	root/root	-rw-r--r--	2023-12-06 06:49:34
package.json	application/json	23 B	root/root	-rw-r--r--	2023-12-06 06:49:34
pattern.js	text/x-java	6.99 KB	root/root	-rw-r--r--	2023-12-06 06:49:34
processor.js	text/x-java	10.44 KB	root/root	-rw-r--r--	2023-12-06 06:49:34
walker.js	text/x-java	10.86 KB	root/root	-rw-r--r--	2023-12-06 06:49:34