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minimatch.js
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const minimatch = module.exports = (p, pattern, options = {}) => { assertValidPattern(pattern) // shortcut: comments match nothing. if (!options.nocomment && pattern.charAt(0) === '#') { return false } return new Minimatch(pattern, options).match(p) } module.exports = minimatch const path = require('./lib/path.js') minimatch.sep = path.sep const GLOBSTAR = Symbol('globstar **') minimatch.GLOBSTAR = GLOBSTAR const expand = require('brace-expansion') const plTypes = { '!': { open: '(?:(?!(?:', close: '))[^/]*?)'}, '?': { open: '(?:', close: ')?' }, '+': { open: '(?:', close: ')+' }, '*': { open: '(?:', close: ')*' }, '@': { open: '(?:', close: ')' } } // any single thing other than / // don't need to escape / when using new RegExp() const qmark = '[^/]' // * => any number of characters const star = qmark + '*?' // ** when dots are allowed. Anything goes, except .. and . // not (^ or / followed by one or two dots followed by $ or /), // followed by anything, any number of times. const twoStarDot = '(?:(?!(?:\\\/|^)(?:\\.{1,2})($|\\\/)).)*?' // not a ^ or / followed by a dot, // followed by anything, any number of times. const twoStarNoDot = '(?:(?!(?:\\\/|^)\\.).)*?' // "abc" -> { a:true, b:true, c:true } const charSet = s => s.split('').reduce((set, c) => { set[c] = true return set }, {}) // characters that need to be escaped in RegExp. const reSpecials = charSet('().*{}+?[]^$\\!') // characters that indicate we have to add the pattern start const addPatternStartSet = charSet('[.(') // normalizes slashes. const slashSplit = /\/+/ minimatch.filter = (pattern, options = {}) => (p, i, list) => minimatch(p, pattern, options) const ext = (a, b = {}) => { const t = {} Object.keys(a).forEach(k => t[k] = a[k]) Object.keys(b).forEach(k => t[k] = b[k]) return t } minimatch.defaults = def => { if (!def || typeof def !== 'object' || !Object.keys(def).length) { return minimatch } const orig = minimatch const m = (p, pattern, options) => orig(p, pattern, ext(def, options)) m.Minimatch = class Minimatch extends orig.Minimatch { constructor (pattern, options) { super(pattern, ext(def, options)) } } m.Minimatch.defaults = options => orig.defaults(ext(def, options)).Minimatch m.filter = (pattern, options) => orig.filter(pattern, ext(def, options)) m.defaults = options => orig.defaults(ext(def, options)) m.makeRe = (pattern, options) => orig.makeRe(pattern, ext(def, options)) m.braceExpand = (pattern, options) => orig.braceExpand(pattern, ext(def, options)) m.match = (list, pattern, options) => orig.match(list, pattern, ext(def, options)) return m } // Brace expansion: // a{b,c}d -> abd acd // a{b,}c -> abc ac // a{0..3}d -> a0d a1d a2d a3d // a{b,c{d,e}f}g -> abg acdfg acefg // a{b,c}d{e,f}g -> abdeg acdeg abdeg abdfg // // Invalid sets are not expanded. // a{2..}b -> a{2..}b // a{b}c -> a{b}c minimatch.braceExpand = (pattern, options) => braceExpand(pattern, options) const braceExpand = (pattern, options = {}) => { assertValidPattern(pattern) // Thanks to Yeting Li <https://github.com/yetingli> for // improving this regexp to avoid a ReDOS vulnerability. if (options.nobrace || !/\{(?:(?!\{).)*\}/.test(pattern)) { // shortcut. no need to expand. return [pattern] } return expand(pattern) } const MAX_PATTERN_LENGTH = 1024 * 64 const assertValidPattern = pattern => { if (typeof pattern !== 'string') { throw new TypeError('invalid pattern') } if (pattern.length > MAX_PATTERN_LENGTH) { throw new TypeError('pattern is too long') } } // parse a component of the expanded set. // At this point, no pattern may contain "/" in it // so we're going to return a 2d array, where each entry is the full // pattern, split on '/', and then turned into a regular expression. // A regexp is made at the end which joins each array with an // escaped /, and another full one which joins each regexp with |. // // Following the lead of Bash 4.1, note that "**" only has special meaning // when it is the *only* thing in a path portion. Otherwise, any series // of * is equivalent to a single *. Globstar behavior is enabled by // default, and can be disabled by setting options.noglobstar. const SUBPARSE = Symbol('subparse') minimatch.makeRe = (pattern, options) => new Minimatch(pattern, options || {}).makeRe() minimatch.match = (list, pattern, options = {}) => { const mm = new Minimatch(pattern, options) list = list.filter(f => mm.match(f)) if (mm.options.nonull && !list.length) { list.push(pattern) } return list } // replace stuff like \* with * const globUnescape = s => s.replace(/\\(.)/g, '$1') const regExpEscape = s => s.replace(/[-[\]{}()*+?.,\\^$|#\s]/g, '\\$&') class Minimatch { constructor (pattern, options) { assertValidPattern(pattern) if (!options) options = {} this.options = options this.set = [] this.pattern = pattern this.windowsPathsNoEscape = !!options.windowsPathsNoEscape || options.allowWindowsEscape === false if (this.windowsPathsNoEscape) { this.pattern = this.pattern.replace(/\\/g, '/') } this.regexp = null this.negate = false this.comment = false this.empty = false this.partial = !!options.partial // make the set of regexps etc. this.make() } debug () {} make () { const pattern = this.pattern const options = this.options // empty patterns and comments match nothing. if (!options.nocomment && pattern.charAt(0) === '#') { this.comment = true return } if (!pattern) { this.empty = true return } // step 1: figure out negation, etc. this.parseNegate() // step 2: expand braces let set = this.globSet = this.braceExpand() if (options.debug) this.debug = (...args) => console.error(...args) this.debug(this.pattern, set) // step 3: now we have a set, so turn each one into a series of path-portion // matching patterns. // These will be regexps, except in the case of "**", which is // set to the GLOBSTAR object for globstar behavior, // and will not contain any / characters set = this.globParts = set.map(s => s.split(slashSplit)) this.debug(this.pattern, set) // glob --> regexps set = set.map((s, si, set) => s.map(this.parse, this)) this.debug(this.pattern, set) // filter out everything that didn't compile properly. set = set.filter(s => s.indexOf(false) === -1) this.debug(this.pattern, set) this.set = set } parseNegate () { if (this.options.nonegate) return const pattern = this.pattern let negate = false let negateOffset = 0 for (let i = 0; i < pattern.length && pattern.charAt(i) === '!'; i++) { negate = !negate negateOffset++ } if (negateOffset) this.pattern = pattern.substr(negateOffset) this.negate = negate } // set partial to true to test if, for example, // "/a/b" matches the start of "/*/b/*/d" // Partial means, if you run out of file before you run // out of pattern, then that's fine, as long as all // the parts match. matchOne (file, pattern, partial) { var options = this.options this.debug('matchOne', { 'this': this, file: file, pattern: pattern }) this.debug('matchOne', file.length, pattern.length) for (var fi = 0, pi = 0, fl = file.length, pl = pattern.length ; (fi < fl) && (pi < pl) ; fi++, pi++) { this.debug('matchOne loop') var p = pattern[pi] var f = file[fi] this.debug(pattern, p, f) // should be impossible. // some invalid regexp stuff in the set. /* istanbul ignore if */ if (p === false) return false if (p === GLOBSTAR) { this.debug('GLOBSTAR', [pattern, p, f]) // "**" // a/**/b/**/c would match the following: // a/b/x/y/z/c // a/x/y/z/b/c // a/b/x/b/x/c // a/b/c // To do this, take the rest of the pattern after // the **, and see if it would match the file remainder. // If so, return success. // If not, the ** "swallows" a segment, and try again. // This is recursively awful. // // a/**/b/**/c matching a/b/x/y/z/c // - a matches a // - doublestar // - matchOne(b/x/y/z/c, b/**/c) // - b matches b // - doublestar // - matchOne(x/y/z/c, c) -> no // - matchOne(y/z/c, c) -> no // - matchOne(z/c, c) -> no // - matchOne(c, c) yes, hit var fr = fi var pr = pi + 1 if (pr === pl) { this.debug('** at the end') // a ** at the end will just swallow the rest. // We have found a match. // however, it will not swallow /.x, unless // options.dot is set. // . and .. are *never* matched by **, for explosively // exponential reasons. for (; fi < fl; fi++) { if (file[fi] === '.' || file[fi] === '..' || (!options.dot && file[fi].charAt(0) === '.')) return false } return true } // ok, let's see if we can swallow whatever we can. while (fr < fl) { var swallowee = file[fr] this.debug('\nglobstar while', file, fr, pattern, pr, swallowee) // XXX remove this slice. Just pass the start index. if (this.matchOne(file.slice(fr), pattern.slice(pr), partial)) { this.debug('globstar found match!', fr, fl, swallowee) // found a match. return true } else { // can't swallow "." or ".." ever. // can only swallow ".foo" when explicitly asked. if (swallowee === '.' || swallowee === '..' || (!options.dot && swallowee.charAt(0) === '.')) { this.debug('dot detected!', file, fr, pattern, pr) break } // ** swallows a segment, and continue. this.debug('globstar swallow a segment, and continue') fr++ } } // no match was found. // However, in partial mode, we can't say this is necessarily over. // If there's more *pattern* left, then /* istanbul ignore if */ if (partial) { // ran out of file this.debug('\n>>> no match, partial?', file, fr, pattern, pr) if (fr === fl) return true } return false } // something other than ** // non-magic patterns just have to match exactly // patterns with magic have been turned into regexps. var hit if (typeof p === 'string') { hit = f === p this.debug('string match', p, f, hit) } else { hit = f.match(p) this.debug('pattern match', p, f, hit) } if (!hit) return false } // Note: ending in / means that we'll get a final "" // at the end of the pattern. This can only match a // corresponding "" at the end of the file. // If the file ends in /, then it can only match a // a pattern that ends in /, unless the pattern just // doesn't have any more for it. But, a/b/ should *not* // match "a/b/*", even though "" matches against the // [^/]*? pattern, except in partial mode, where it might // simply not be reached yet. // However, a/b/ should still satisfy a/* // now either we fell off the end of the pattern, or we're done. if (fi === fl && pi === pl) { // ran out of pattern and filename at the same time. // an exact hit! return true } else if (fi === fl) { // ran out of file, but still had pattern left. // this is ok if we're doing the match as part of // a glob fs traversal. return partial } else /* istanbul ignore else */ if (pi === pl) { // ran out of pattern, still have file left. // this is only acceptable if we're on the very last // empty segment of a file with a trailing slash. // a/* should match a/b/ return (fi === fl - 1) && (file[fi] === '') } // should be unreachable. /* istanbul ignore next */ throw new Error('wtf?') } braceExpand () { return braceExpand(this.pattern, this.options) } parse (pattern, isSub) { assertValidPattern(pattern) const options = this.options // shortcuts if (pattern === '**') { if (!options.noglobstar) return GLOBSTAR else pattern = '*' } if (pattern === '') return '' let re = '' let hasMagic = !!options.nocase let escaping = false // ? => one single character const patternListStack = [] const negativeLists = [] let stateChar let inClass = false let reClassStart = -1 let classStart = -1 let cs let pl let sp // . and .. never match anything that doesn't start with ., // even when options.dot is set. const patternStart = pattern.charAt(0) === '.' ? '' // anything // not (start or / followed by . or .. followed by / or end) : options.dot ? '(?!(?:^|\\\/)\\.{1,2}(?:$|\\\/))' : '(?!\\.)' const clearStateChar = () => { if (stateChar) { // we had some state-tracking character // that wasn't consumed by this pass. switch (stateChar) { case '*': re += star hasMagic = true break case '?': re += qmark hasMagic = true break default: re += '\\' + stateChar break } this.debug('clearStateChar %j %j', stateChar, re) stateChar = false } } for (let i = 0, c; (i < pattern.length) && (c = pattern.charAt(i)); i++) { this.debug('%s\t%s %s %j', pattern, i, re, c) // skip over any that are escaped. if (escaping) { /* istanbul ignore next - completely not allowed, even escaped. */ if (c === '/') { return false } if (reSpecials[c]) { re += '\\' } re += c escaping = false continue } switch (c) { /* istanbul ignore next */ case '/': { // Should already be path-split by now. return false } case '\\': clearStateChar() escaping = true continue // the various stateChar values // for the "extglob" stuff. case '?': case '*': case '+': case '@': case '!': this.debug('%s\t%s %s %j <-- stateChar', pattern, i, re, c) // all of those are literals inside a class, except that // the glob [!a] means [^a] in regexp if (inClass) { this.debug(' in class') if (c === '!' && i === classStart + 1) c = '^' re += c continue } // if we already have a stateChar, then it means // that there was something like ** or +? in there. // Handle the stateChar, then proceed with this one. this.debug('call clearStateChar %j', stateChar) clearStateChar() stateChar = c // if extglob is disabled, then +(asdf|foo) isn't a thing. // just clear the statechar *now*, rather than even diving into // the patternList stuff. if (options.noext) clearStateChar() continue case '(': if (inClass) { re += '(' continue } if (!stateChar) { re += '\\(' continue } patternListStack.push({ type: stateChar, start: i - 1, reStart: re.length, open: plTypes[stateChar].open, close: plTypes[stateChar].close }) // negation is (?:(?!js)[^/]*) re += stateChar === '!' ? '(?:(?!(?:' : '(?:' this.debug('plType %j %j', stateChar, re) stateChar = false continue case ')': if (inClass || !patternListStack.length) { re += '\\)' continue } clearStateChar() hasMagic = true pl = patternListStack.pop() // negation is (?:(?!js)[^/]*) // The others are (?:<pattern>)<type> re += pl.close if (pl.type === '!') { negativeLists.push(pl) } pl.reEnd = re.length continue case '|': if (inClass || !patternListStack.length) { re += '\\|' continue } clearStateChar() re += '|' continue // these are mostly the same in regexp and glob case '[': // swallow any state-tracking char before the [ clearStateChar() if (inClass) { re += '\\' + c continue } inClass = true classStart = i reClassStart = re.length re += c continue case ']': // a right bracket shall lose its special // meaning and represent itself in // a bracket expression if it occurs // first in the list. -- POSIX.2 2.8.3.2 if (i === classStart + 1 || !inClass) { re += '\\' + c continue } // handle the case where we left a class open. // "[z-a]" is valid, equivalent to "\[z-a\]" // split where the last [ was, make sure we don't have // an invalid re. if so, re-walk the contents of the // would-be class to re-translate any characters that // were passed through as-is // TODO: It would probably be faster to determine this // without a try/catch and a new RegExp, but it's tricky // to do safely. For now, this is safe and works. cs = pattern.substring(classStart + 1, i) try { RegExp('[' + cs + ']') } catch (er) { // not a valid class! sp = this.parse(cs, SUBPARSE) re = re.substr(0, reClassStart) + '\\[' + sp[0] + '\\]' hasMagic = hasMagic || sp[1] inClass = false continue } // finish up the class. hasMagic = true inClass = false re += c continue default: // swallow any state char that wasn't consumed clearStateChar() if (reSpecials[c] && !(c === '^' && inClass)) { re += '\\' } re += c break } // switch } // for // handle the case where we left a class open. // "[abc" is valid, equivalent to "\[abc" if (inClass) { // split where the last [ was, and escape it // this is a huge pita. We now have to re-walk // the contents of the would-be class to re-translate // any characters that were passed through as-is cs = pattern.substr(classStart + 1) sp = this.parse(cs, SUBPARSE) re = re.substr(0, reClassStart) + '\\[' + sp[0] hasMagic = hasMagic || sp[1] } // handle the case where we had a +( thing at the *end* // of the pattern. // each pattern list stack adds 3 chars, and we need to go through // and escape any | chars that were passed through as-is for the regexp. // Go through and escape them, taking care not to double-escape any // | chars that were already escaped. for (pl = patternListStack.pop(); pl; pl = patternListStack.pop()) { let tail tail = re.slice(pl.reStart + pl.open.length) this.debug('setting tail', re, pl) // maybe some even number of \, then maybe 1 \, followed by a | tail = tail.replace(/((?:\\{2}){0,64})(\\?)\|/g, (_, $1, $2) => { /* istanbul ignore else - should already be done */ if (!$2) { // the | isn't already escaped, so escape it. $2 = '\\' } // need to escape all those slashes *again*, without escaping the // one that we need for escaping the | character. As it works out, // escaping an even number of slashes can be done by simply repeating // it exactly after itself. That's why this trick works. // // I am sorry that you have to see this. return $1 + $1 + $2 + '|' }) this.debug('tail=%j\n %s', tail, tail, pl, re) const t = pl.type === '*' ? star : pl.type === '?' ? qmark : '\\' + pl.type hasMagic = true re = re.slice(0, pl.reStart) + t + '\\(' + tail } // handle trailing things that only matter at the very end. clearStateChar() if (escaping) { // trailing \\ re += '\\\\' } // only need to apply the nodot start if the re starts with // something that could conceivably capture a dot const addPatternStart = addPatternStartSet[re.charAt(0)] // Hack to work around lack of negative lookbehind in JS // A pattern like: *.!(x).!(y|z) needs to ensure that a name // like 'a.xyz.yz' doesn't match. So, the first negative // lookahead, has to look ALL the way ahead, to the end of // the pattern. for (let n = negativeLists.length - 1; n > -1; n--) { const nl = negativeLists[n] const nlBefore = re.slice(0, nl.reStart) const nlFirst = re.slice(nl.reStart, nl.reEnd - 8) let nlAfter = re.slice(nl.reEnd) const nlLast = re.slice(nl.reEnd - 8, nl.reEnd) + nlAfter // Handle nested stuff like *(*.js|!(*.json)), where open parens // mean that we should *not* include the ) in the bit that is considered // "after" the negated section. const openParensBefore = nlBefore.split('(').length - 1 let cleanAfter = nlAfter for (let i = 0; i < openParensBefore; i++) { cleanAfter = cleanAfter.replace(/\)[+*?]?/, '') } nlAfter = cleanAfter const dollar = nlAfter === '' && isSub !== SUBPARSE ? '$' : '' re = nlBefore + nlFirst + nlAfter + dollar + nlLast } // if the re is not "" at this point, then we need to make sure // it doesn't match against an empty path part. // Otherwise a/* will match a/, which it should not. if (re !== '' && hasMagic) { re = '(?=.)' + re } if (addPatternStart) { re = patternStart + re } // parsing just a piece of a larger pattern. if (isSub === SUBPARSE) { return [re, hasMagic] } // skip the regexp for non-magical patterns // unescape anything in it, though, so that it'll be // an exact match against a file etc. if (!hasMagic) { return globUnescape(pattern) } const flags = options.nocase ? 'i' : '' try { return Object.assign(new RegExp('^' + re + '$', flags), { _glob: pattern, _src: re, }) } catch (er) /* istanbul ignore next - should be impossible */ { // If it was an invalid regular expression, then it can't match // anything. This trick looks for a character after the end of // the string, which is of course impossible, except in multi-line // mode, but it's not a /m regex. return new RegExp('$.') } } makeRe () { if (this.regexp || this.regexp === false) return this.regexp // at this point, this.set is a 2d array of partial // pattern strings, or "**". // // It's better to use .match(). This function shouldn't // be used, really, but it's pretty convenient sometimes, // when you just want to work with a regex. const set = this.set if (!set.length) { this.regexp = false return this.regexp } const options = this.options const twoStar = options.noglobstar ? star : options.dot ? twoStarDot : twoStarNoDot const flags = options.nocase ? 'i' : '' // coalesce globstars and regexpify non-globstar patterns // if it's the only item, then we just do one twoStar // if it's the first, and there are more, prepend (\/|twoStar\/)? to next // if it's the last, append (\/twoStar|) to previous // if it's in the middle, append (\/|\/twoStar\/) to previous // then filter out GLOBSTAR symbols let re = set.map(pattern => { pattern = pattern.map(p => typeof p === 'string' ? regExpEscape(p) : p === GLOBSTAR ? GLOBSTAR : p._src ).reduce((set, p) => { if (!(set[set.length - 1] === GLOBSTAR && p === GLOBSTAR)) { set.push(p) } return set }, []) pattern.forEach((p, i) => { if (p !== GLOBSTAR || pattern[i-1] === GLOBSTAR) { return } if (i === 0) { if (pattern.length > 1) { pattern[i+1] = '(?:\\\/|' + twoStar + '\\\/)?' + pattern[i+1] } else { pattern[i] = twoStar } } else if (i === pattern.length - 1) { pattern[i-1] += '(?:\\\/|' + twoStar + ')?' } else { pattern[i-1] += '(?:\\\/|\\\/' + twoStar + '\\\/)' + pattern[i+1] pattern[i+1] = GLOBSTAR } }) return pattern.filter(p => p !== GLOBSTAR).join('/') }).join('|') // must match entire pattern // ending in a * or ** will make it less strict. re = '^(?:' + re + ')$' // can match anything, as long as it's not this. if (this.negate) re = '^(?!' + re + ').*$' try { this.regexp = new RegExp(re, flags) } catch (ex) /* istanbul ignore next - should be impossible */ { this.regexp = false } return this.regexp } match (f, partial = this.partial) { this.debug('match', f, this.pattern) // short-circuit in the case of busted things. // comments, etc. if (this.comment) return false if (this.empty) return f === '' if (f === '/' && partial) return true const options = this.options // windows: need to use /, not \ if (path.sep !== '/') { f = f.split(path.sep).join('/') } // treat the test path as a set of pathparts. f = f.split(slashSplit) this.debug(this.pattern, 'split', f) // just ONE of the pattern sets in this.set needs to match // in order for it to be valid. If negating, then just one // match means that we have failed. // Either way, return on the first hit. const set = this.set this.debug(this.pattern, 'set', set) // Find the basename of the path by looking for the last non-empty segment let filename for (let i = f.length - 1; i >= 0; i--) { filename = f[i] if (filename) break } for (let i = 0; i < set.length; i++) { const pattern = set[i] let file = f if (options.matchBase && pattern.length === 1) { file = [filename] } const hit = this.matchOne(file, pattern, partial) if (hit) { if (options.flipNegate) return true return !this.negate } } // didn't get any hits. this is success if it's a negative // pattern, failure otherwise. if (options.flipNegate) return false return this.negate } static defaults (def) { return minimatch.defaults(def).Minimatch } } minimatch.Minimatch = Minimatch