File Explorer

1"use strict";2// this is just a very light wrapper around 2 arrays with an offset index3Object.defineProperty(exports, "__esModule", { value: true });4exports.Pattern = void 0;5const minimatch_1 = require("minimatch");6const isPatternList = (pl) => pl.length >= 1;7const isGlobList = (gl) => gl.length >= 1;8/**9 * An immutable-ish view on an array of glob parts and their parsed10 * results11 */12class Pattern {13    #patternList;14    #globList;15    #index;16    length;17    #platform;18    #rest;19    #globString;20    #isDrive;21    #isUNC;22    #isAbsolute;23    #followGlobstar = true;24    constructor(patternList, globList, index, platform) {25        if (!isPatternList(patternList)) {26            throw new TypeError('empty pattern list');27        }28        if (!isGlobList(globList)) {29            throw new TypeError('empty glob list');30        }31        if (globList.length !== patternList.length) {32            throw new TypeError('mismatched pattern list and glob list lengths');33        }34        this.length = patternList.length;35        if (index < 0 || index >= this.length) {36            throw new TypeError('index out of range');37        }38        this.#patternList = patternList;39        this.#globList = globList;40        this.#index = index;41        this.#platform = platform;42        // normalize root entries of absolute patterns on initial creation.43        if (this.#index === 0) {44            // c: => ['c:/']45            // C:/ => ['C:/']46            // C:/x => ['C:/', 'x']47            // //host/share => ['//host/share/']48            // //host/share/ => ['//host/share/']49            // //host/share/x => ['//host/share/', 'x']50            // /etc => ['/', 'etc']51            // / => ['/']52            if (this.isUNC()) {53                // '' / '' / 'host' / 'share'54                const [p0, p1, p2, p3, ...prest] = this.#patternList;55                const [g0, g1, g2, g3, ...grest] = this.#globList;56                if (prest[0] === '') {57                    // ends in /58                    prest.shift();59                    grest.shift();60                }61                const p = [p0, p1, p2, p3, ''].join('/');62                const g = [g0, g1, g2, g3, ''].join('/');63                this.#patternList = [p, ...prest];64                this.#globList = [g, ...grest];65                this.length = this.#patternList.length;66            }67            else if (this.isDrive() || this.isAbsolute()) {68                const [p1, ...prest] = this.#patternList;69                const [g1, ...grest] = this.#globList;70                if (prest[0] === '') {71                    // ends in /72                    prest.shift();73                    grest.shift();74                }75                const p = p1 + '/';76                const g = g1 + '/';77                this.#patternList = [p, ...prest];78                this.#globList = [g, ...grest];79                this.length = this.#patternList.length;80            }81        }82    }83    /**84     * The first entry in the parsed list of patterns85     */86    pattern() {87        return this.#patternList[this.#index];88    }89    /**90     * true of if pattern() returns a string91     */92    isString() {93        return typeof this.#patternList[this.#index] === 'string';94    }95    /**96     * true of if pattern() returns GLOBSTAR97     */98    isGlobstar() {99        return this.#patternList[this.#index] === minimatch_1.GLOBSTAR;100    }101    /**102     * true if pattern() returns a regexp103     */104    isRegExp() {105        return this.#patternList[this.#index] instanceof RegExp;106    }107    /**108     * The /-joined set of glob parts that make up this pattern109     */110    globString() {111        return (this.#globString =112            this.#globString ||113                (this.#index === 0 ?114                    this.isAbsolute() ?115                        this.#globList[0] + this.#globList.slice(1).join('/')116                        : this.#globList.join('/')117                    : this.#globList.slice(this.#index).join('/')));118    }119    /**120     * true if there are more pattern parts after this one121     */122    hasMore() {123        return this.length > this.#index + 1;124    }125    /**126     * The rest of the pattern after this part, or null if this is the end127     */128    rest() {129        if (this.#rest !== undefined)130            return this.#rest;131        if (!this.hasMore())132            return (this.#rest = null);133        this.#rest = new Pattern(this.#patternList, this.#globList, this.#index + 1, this.#platform);134        this.#rest.#isAbsolute = this.#isAbsolute;135        this.#rest.#isUNC = this.#isUNC;136        this.#rest.#isDrive = this.#isDrive;137        return this.#rest;138    }139    /**140     * true if the pattern represents a //unc/path/ on windows141     */142    isUNC() {143        const pl = this.#patternList;144        return this.#isUNC !== undefined ?145            this.#isUNC146            : (this.#isUNC =147                this.#platform === 'win32' &&148                    this.#index === 0 &&149                    pl[0] === '' &&150                    pl[1] === '' &&151                    typeof pl[2] === 'string' &&152                    !!pl[2] &&153                    typeof pl[3] === 'string' &&154                    !!pl[3]);155    }156    // pattern like C:/...157    // split = ['C:', ...]158    // XXX: would be nice to handle patterns like `c:*` to test the cwd159    // in c: for *, but I don't know of a way to even figure out what that160    // cwd is without actually chdir'ing into it?161    /**162     * True if the pattern starts with a drive letter on Windows163     */164    isDrive() {165        const pl = this.#patternList;166        return this.#isDrive !== undefined ?167            this.#isDrive168            : (this.#isDrive =169                this.#platform === 'win32' &&170                    this.#index === 0 &&171                    this.length > 1 &&172                    typeof pl[0] === 'string' &&173                    /^[a-z]:$/i.test(pl[0]));174    }175    // pattern = '/' or '/...' or '/x/...'176    // split = ['', ''] or ['', ...] or ['', 'x', ...]177    // Drive and UNC both considered absolute on windows178    /**179     * True if the pattern is rooted on an absolute path180     */181    isAbsolute() {182        const pl = this.#patternList;183        return this.#isAbsolute !== undefined ?184            this.#isAbsolute185            : (this.#isAbsolute =186                (pl[0] === '' && pl.length > 1) ||187                    this.isDrive() ||188                    this.isUNC());189    }190    /**191     * consume the root of the pattern, and return it192     */193    root() {194        const p = this.#patternList[0];195        return (typeof p === 'string' && this.isAbsolute() && this.#index === 0) ?196            p197            : '';198    }199    /**200     * Check to see if the current globstar pattern is allowed to follow201     * a symbolic link.202     */203    checkFollowGlobstar() {204        return !(this.#index === 0 ||205            !this.isGlobstar() ||206            !this.#followGlobstar);207    }208    /**209     * Mark that the current globstar pattern is following a symbolic link210     */211    markFollowGlobstar() {212        if (this.#index === 0 || !this.isGlobstar() || !this.#followGlobstar)213            return false;214        this.#followGlobstar = false;215        return true;216    }217}218exports.Pattern = Pattern;219//# sourceMappingURL=pattern.js.map