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'use strict';
/**
* Module dependencies
*/
var util = require('util');
var toRegex = require('to-regex');
var extend = require('extend-shallow');
/**
* Local dependencies
*/
var compilers = require('./lib/compilers');
var parsers = require('./lib/parsers');
var cache = require('./lib/cache');
var utils = require('./lib/utils');
var MAX_LENGTH = 1024 * 64;
/**
* The main function takes a list of strings and one or more
* glob patterns to use for matching.
*
* ```js
* var nm = require('nanomatch');
* nm(list, patterns[, options]);
*
* console.log(nm(['a.js', 'a.txt'], ['*.js']));
* //=> [ 'a.js' ]
* ```
* @param {Array} `list` A list of strings to match
* @param {String|Array} `patterns` One or more glob patterns to use for matching.
* @param {Object} `options` See available [options](#options) for changing how matches are performed
* @return {Array} Returns an array of matches
* @summary false
* @api public
*/
function nanomatch(list, patterns, options) {
patterns = utils.arrayify(patterns);
list = utils.arrayify(list);
var len = patterns.length;
if (list.length === 0 || len === 0) {
return [];
}
if (len === 1) {
return nanomatch.match(list, patterns[0], options);
}
var negated = false;
var omit = [];
var keep = [];
var idx = -1;
while (++idx < len) {
var pattern = patterns[idx];
if (typeof pattern === 'string' && pattern.charCodeAt(0) === 33 /* ! */) {
omit.push.apply(omit, nanomatch.match(list, pattern.slice(1), options));
negated = true;
} else {
keep.push.apply(keep, nanomatch.match(list, pattern, options));
}
}
// minimatch.match parity
if (negated && keep.length === 0) {
if (options && options.unixify === false) {
keep = list.slice();
} else {
var unixify = utils.unixify(options);
for (var i = 0; i < list.length; i++) {
keep.push(unixify(list[i]));
}
}
}
var matches = utils.diff(keep, omit);
if (!options || options.nodupes !== false) {
return utils.unique(matches);
}
return matches;
}
/**
* Similar to the main function, but `pattern` must be a string.
*
* ```js
* var nm = require('nanomatch');
* nm.match(list, pattern[, options]);
*
* console.log(nm.match(['a.a', 'a.aa', 'a.b', 'a.c'], '*.a'));
* //=> ['a.a', 'a.aa']
* ```
* @param {Array} `list` Array of strings to match
* @param {String} `pattern` Glob pattern to use for matching.
* @param {Object} `options` See available [options](#options) for changing how matches are performed
* @return {Array} Returns an array of matches
* @api public
*/
nanomatch.match = function(list, pattern, options) {
if (Array.isArray(pattern)) {
throw new TypeError('expected pattern to be a string');
}
var unixify = utils.unixify(options);
var isMatch = memoize('match', pattern, options, nanomatch.matcher);
var matches = [];
list = utils.arrayify(list);
var len = list.length;
var idx = -1;
while (++idx < len) {
var ele = list[idx];
if (ele === pattern || isMatch(ele)) {
matches.push(utils.value(ele, unixify, options));
}
}
// if no options were passed, uniquify results and return
if (typeof options === 'undefined') {
return utils.unique(matches);
}
if (matches.length === 0) {
if (options.failglob === true) {
throw new Error('no matches found for "' + pattern + '"');
}
if (options.nonull === true || options.nullglob === true) {
return [options.unescape ? utils.unescape(pattern) : pattern];
}
}
// if `opts.ignore` was defined, diff ignored list
if (options.ignore) {
matches = nanomatch.not(matches, options.ignore, options);
}
return options.nodupes !== false ? utils.unique(matches) : matches;
};
/**
* Returns true if the specified `string` matches the given glob `pattern`.
*
* ```js
* var nm = require('nanomatch');
* nm.isMatch(string, pattern[, options]);
*
* console.log(nm.isMatch('a.a', '*.a'));
* //=> true
* console.log(nm.isMatch('a.b', '*.a'));
* //=> false
* ```
* @param {String} `string` String to match
* @param {String} `pattern` Glob pattern to use for matching.
* @param {Object} `options` See available [options](#options) for changing how matches are performed
* @return {Boolean} Returns true if the string matches the glob pattern.
* @api public
*/
nanomatch.isMatch = function(str, pattern, options) {
if (typeof str !== 'string') {
throw new TypeError('expected a string: "' + util.inspect(str) + '"');
}
if (utils.isEmptyString(str) || utils.isEmptyString(pattern)) {
return false;
}
var equals = utils.equalsPattern(options);
if (equals(str)) {
return true;
}
var isMatch = memoize('isMatch', pattern, options, nanomatch.matcher);
return isMatch(str);
};
/**
* Returns true if some of the elements in the given `list` match any of the
* given glob `patterns`.
*
* ```js
* var nm = require('nanomatch');
* nm.some(list, patterns[, options]);
*
* console.log(nm.some(['foo.js', 'bar.js'], ['*.js', '!foo.js']));
* // true
* console.log(nm.some(['foo.js'], ['*.js', '!foo.js']));
* // false
* ```
* @param {String|Array} `list` The string or array of strings to test. Returns as soon as the first match is found.
* @param {String|Array} `patterns` One or more glob patterns to use for matching.
* @param {Object} `options` See available [options](#options) for changing how matches are performed
* @return {Boolean} Returns true if any patterns match `str`
* @api public
*/
nanomatch.some = function(list, patterns, options) {
if (typeof list === 'string') {
list = [list];
}
for (var i = 0; i < list.length; i++) {
if (nanomatch(list[i], patterns, options).length === 1) {
return true;
}
}
return false;
};
/**
* Returns true if every element in the given `list` matches
* at least one of the given glob `patterns`.
*
* ```js
* var nm = require('nanomatch');
* nm.every(list, patterns[, options]);
*
* console.log(nm.every('foo.js', ['foo.js']));
* // true
* console.log(nm.every(['foo.js', 'bar.js'], ['*.js']));
* // true
* console.log(nm.every(['foo.js', 'bar.js'], ['*.js', '!foo.js']));
* // false
* console.log(nm.every(['foo.js'], ['*.js', '!foo.js']));
* // false
* ```
* @param {String|Array} `list` The string or array of strings to test.
* @param {String|Array} `patterns` One or more glob patterns to use for matching.
* @param {Object} `options` See available [options](#options) for changing how matches are performed
* @return {Boolean} Returns true if any patterns match `str`
* @api public
*/
nanomatch.every = function(list, patterns, options) {
if (typeof list === 'string') {
list = [list];
}
for (var i = 0; i < list.length; i++) {
if (nanomatch(list[i], patterns, options).length !== 1) {
return false;
}
}
return true;
};
/**
* Returns true if **any** of the given glob `patterns`
* match the specified `string`.
*
* ```js
* var nm = require('nanomatch');
* nm.any(string, patterns[, options]);
*
* console.log(nm.any('a.a', ['b.*', '*.a']));
* //=> true
* console.log(nm.any('a.a', 'b.*'));
* //=> false
* ```
* @param {String|Array} `str` The string to test.
* @param {String|Array} `patterns` One or more glob patterns to use for matching.
* @param {Object} `options` See available [options](#options) for changing how matches are performed
* @return {Boolean} Returns true if any patterns match `str`
* @api public
*/
nanomatch.any = function(str, patterns, options) {
if (typeof str !== 'string') {
throw new TypeError('expected a string: "' + util.inspect(str) + '"');
}
if (utils.isEmptyString(str) || utils.isEmptyString(patterns)) {
return false;
}
if (typeof patterns === 'string') {
patterns = [patterns];
}
for (var i = 0; i < patterns.length; i++) {
if (nanomatch.isMatch(str, patterns[i], options)) {
return true;
}
}
return false;
};
/**
* Returns true if **all** of the given `patterns`
* match the specified string.
*
* ```js
* var nm = require('nanomatch');
* nm.all(string, patterns[, options]);
*
* console.log(nm.all('foo.js', ['foo.js']));
* // true
*
* console.log(nm.all('foo.js', ['*.js', '!foo.js']));
* // false
*
* console.log(nm.all('foo.js', ['*.js', 'foo.js']));
* // true
*
* console.log(nm.all('foo.js', ['*.js', 'f*', '*o*', '*o.js']));
* // true
* ```
* @param {String|Array} `str` The string to test.
* @param {String|Array} `patterns` One or more glob patterns to use for matching.
* @param {Object} `options` See available [options](#options) for changing how matches are performed
* @return {Boolean} Returns true if any patterns match `str`
* @api public
*/
nanomatch.all = function(str, patterns, options) {
if (typeof str !== 'string') {
throw new TypeError('expected a string: "' + util.inspect(str) + '"');
}
if (typeof patterns === 'string') {
patterns = [patterns];
}
for (var i = 0; i < patterns.length; i++) {
if (!nanomatch.isMatch(str, patterns[i], options)) {
return false;
}
}
return true;
};
/**
* Returns a list of strings that _**do not match any**_ of the given `patterns`.
*
* ```js
* var nm = require('nanomatch');
* nm.not(list, patterns[, options]);
*
* console.log(nm.not(['a.a', 'b.b', 'c.c'], '*.a'));
* //=> ['b.b', 'c.c']
* ```
* @param {Array} `list` Array of strings to match.
* @param {String|Array} `patterns` One or more glob pattern to use for matching.
* @param {Object} `options` See available [options](#options) for changing how matches are performed
* @return {Array} Returns an array of strings that **do not match** the given patterns.
* @api public
*/
nanomatch.not = function(list, patterns, options) {
var opts = extend({}, options);
var ignore = opts.ignore;
delete opts.ignore;
list = utils.arrayify(list);
var matches = utils.diff(list, nanomatch(list, patterns, opts));
if (ignore) {
matches = utils.diff(matches, nanomatch(list, ignore));
}
return opts.nodupes !== false ? utils.unique(matches) : matches;
};
/**
* Returns true if the given `string` contains the given pattern. Similar
* to [.isMatch](#isMatch) but the pattern can match any part of the string.
*
* ```js
* var nm = require('nanomatch');
* nm.contains(string, pattern[, options]);
*
* console.log(nm.contains('aa/bb/cc', '*b'));
* //=> true
* console.log(nm.contains('aa/bb/cc', '*d'));
* //=> false
* ```
* @param {String} `str` The string to match.
* @param {String|Array} `patterns` Glob pattern to use for matching.
* @param {Object} `options` See available [options](#options) for changing how matches are performed
* @return {Boolean} Returns true if the patter matches any part of `str`.
* @api public
*/
nanomatch.contains = function(str, patterns, options) {
if (typeof str !== 'string') {
throw new TypeError('expected a string: "' + util.inspect(str) + '"');
}
if (typeof patterns === 'string') {
if (utils.isEmptyString(str) || utils.isEmptyString(patterns)) {
return false;
}
var equals = utils.equalsPattern(patterns, options);
if (equals(str)) {
return true;
}
var contains = utils.containsPattern(patterns, options);
if (contains(str)) {
return true;
}
}
var opts = extend({}, options, {contains: true});
return nanomatch.any(str, patterns, opts);
};
/**
* Returns true if the given pattern and options should enable
* the `matchBase` option.
* @return {Boolean}
* @api private
*/
nanomatch.matchBase = function(pattern, options) {
if (pattern && pattern.indexOf('/') !== -1 || !options) return false;
return options.basename === true || options.matchBase === true;
};
/**
* Filter the keys of the given object with the given `glob` pattern
* and `options`. Does not attempt to match nested keys. If you need this feature,
* use [glob-object][] instead.
*
* ```js
* var nm = require('nanomatch');
* nm.matchKeys(object, patterns[, options]);
*
* var obj = { aa: 'a', ab: 'b', ac: 'c' };
* console.log(nm.matchKeys(obj, '*b'));
* //=> { ab: 'b' }
* ```
* @param {Object} `object` The object with keys to filter.
* @param {String|Array} `patterns` One or more glob patterns to use for matching.
* @param {Object} `options` See available [options](#options) for changing how matches are performed
* @return {Object} Returns an object with only keys that match the given patterns.
* @api public
*/
nanomatch.matchKeys = function(obj, patterns, options) {
if (!utils.isObject(obj)) {
throw new TypeError('expected the first argument to be an object');
}
var keys = nanomatch(Object.keys(obj), patterns, options);
return utils.pick(obj, keys);
};
/**
* Returns a memoized matcher function from the given glob `pattern` and `options`.
* The returned function takes a string to match as its only argument and returns
* true if the string is a match.
*
* ```js
* var nm = require('nanomatch');
* nm.matcher(pattern[, options]);
*
* var isMatch = nm.matcher('*.!(*a)');
* console.log(isMatch('a.a'));
* //=> false
* console.log(isMatch('a.b'));
* //=> true
* ```
* @param {String} `pattern` Glob pattern
* @param {Object} `options` See available [options](#options) for changing how matches are performed.
* @return {Function} Returns a matcher function.
* @api public
*/
nanomatch.matcher = function matcher(pattern, options) {
if (utils.isEmptyString(pattern)) {
return function() {
return false;
};
}
if (Array.isArray(pattern)) {
return compose(pattern, options, matcher);
}
// if pattern is a regex
if (pattern instanceof RegExp) {
return test(pattern);
}
// if pattern is invalid
if (!utils.isString(pattern)) {
throw new TypeError('expected pattern to be an array, string or regex');
}
// if pattern is a non-glob string
if (!utils.hasSpecialChars(pattern)) {
if (options && options.nocase === true) {
pattern = pattern.toLowerCase();
}
return utils.matchPath(pattern, options);
}
// if pattern is a glob string
var re = nanomatch.makeRe(pattern, options);
// if `options.matchBase` or `options.basename` is defined
if (nanomatch.matchBase(pattern, options)) {
return utils.matchBasename(re, options);
}
function test(regex) {
var equals = utils.equalsPattern(options);
var unixify = utils.unixify(options);
return function(str) {
if (equals(str)) {
return true;
}
if (regex.test(unixify(str))) {
return true;
}
return false;
};
}
// create matcher function
var matcherFn = test(re);
// set result object from compiler on matcher function,
// as a non-enumerable property. useful for debugging
utils.define(matcherFn, 'result', re.result);
return matcherFn;
};
/**
* Returns an array of matches captured by `pattern` in `string, or
* `null` if the pattern did not match.
*
* ```js
* var nm = require('nanomatch');
* nm.capture(pattern, string[, options]);
*
* console.log(nm.capture('test/*.js', 'test/foo.js'));
* //=> ['foo']
* console.log(nm.capture('test/*.js', 'foo/bar.css'));
* //=> null
* ```
* @param {String} `pattern` Glob pattern to use for matching.
* @param {String} `string` String to match
* @param {Object} `options` See available [options](#options) for changing how matches are performed
* @return {Boolean} Returns an array of captures if the string matches the glob pattern, otherwise `null`.
* @api public
*/
nanomatch.capture = function(pattern, str, options) {
var re = nanomatch.makeRe(pattern, extend({capture: true}, options));
var unixify = utils.unixify(options);
function match() {
return function(string) {
var match = re.exec(unixify(string));
if (!match) {
return null;
}
return match.slice(1);
};
}
var capture = memoize('capture', pattern, options, match);
return capture(str);
};
/**
* Create a regular expression from the given glob `pattern`.
*
* ```js
* var nm = require('nanomatch');
* nm.makeRe(pattern[, options]);
*
* console.log(nm.makeRe('*.js'));
* //=> /^(?:(\.[\\\/])?(?!\.)(?=.)[^\/]*?\.js)$/
* ```
* @param {String} `pattern` A glob pattern to convert to regex.
* @param {Object} `options` See available [options](#options) for changing how matches are performed.
* @return {RegExp} Returns a regex created from the given pattern.
* @api public
*/
nanomatch.makeRe = function(pattern, options) {
if (pattern instanceof RegExp) {
return pattern;
}
if (typeof pattern !== 'string') {
throw new TypeError('expected pattern to be a string');
}
if (pattern.length > MAX_LENGTH) {
throw new Error('expected pattern to be less than ' + MAX_LENGTH + ' characters');
}
function makeRe() {
var opts = utils.extend({wrap: false}, options);
var result = nanomatch.create(pattern, opts);
var regex = toRegex(result.output, opts);
utils.define(regex, 'result', result);
return regex;
}
return memoize('makeRe', pattern, options, makeRe);
};
/**
* Parses the given glob `pattern` and returns an object with the compiled `output`
* and optional source `map`.
*
* ```js
* var nm = require('nanomatch');
* nm.create(pattern[, options]);
*
* console.log(nm.create('abc/*.js'));
* // { options: { source: 'string', sourcemap: true },
* // state: {},
* // compilers:
* // { ... },
* // output: '(\\.[\\\\\\/])?abc\\/(?!\\.)(?=.)[^\\/]*?\\.js',
* // ast:
* // { type: 'root',
* // errors: [],
* // nodes:
* // [ ... ],
* // dot: false,
* // input: 'abc/*.js' },
* // parsingErrors: [],
* // map:
* // { version: 3,
* // sources: [ 'string' ],
* // names: [],
* // mappings: 'AAAA,GAAG,EAAC,kBAAC,EAAC,EAAE',
* // sourcesContent: [ 'abc/*.js' ] },
* // position: { line: 1, column: 28 },
* // content: {},
* // files: {},
* // idx: 6 }
* ```
* @param {String} `pattern` Glob pattern to parse and compile.
* @param {Object} `options` Any [options](#options) to change how parsing and compiling is performed.
* @return {Object} Returns an object with the parsed AST, compiled string and optional source map.
* @api public
*/
nanomatch.create = function(pattern, options) {
if (typeof pattern !== 'string') {
throw new TypeError('expected a string');
}
function create() {
return nanomatch.compile(nanomatch.parse(pattern, options), options);
}
return memoize('create', pattern, options, create);
};
/**
* Parse the given `str` with the given `options`.
*
* ```js
* var nm = require('nanomatch');
* nm.parse(pattern[, options]);
*
* var ast = nm.parse('a/{b,c}/d');
* console.log(ast);
* // { type: 'root',
* // errors: [],
* // input: 'a/{b,c}/d',
* // nodes:
* // [ { type: 'bos', val: '' },
* // { type: 'text', val: 'a/' },
* // { type: 'brace',
* // nodes:
* // [ { type: 'brace.open', val: '{' },
* // { type: 'text', val: 'b,c' },
* // { type: 'brace.close', val: '}' } ] },
* // { type: 'text', val: '/d' },
* // { type: 'eos', val: '' } ] }
* ```
* @param {String} `str`
* @param {Object} `options`
* @return {Object} Returns an AST
* @api public
*/
nanomatch.parse = function(pattern, options) {
if (typeof pattern !== 'string') {
throw new TypeError('expected a string');
}
function parse() {
var snapdragon = utils.instantiate(null, options);
parsers(snapdragon, options);
var ast = snapdragon.parse(pattern, options);
utils.define(ast, 'snapdragon', snapdragon);
ast.input = pattern;
return ast;
}
return memoize('parse', pattern, options, parse);
};
/**
* Compile the given `ast` or string with the given `options`.
*
* ```js
* var nm = require('nanomatch');
* nm.compile(ast[, options]);
*
* var ast = nm.parse('a/{b,c}/d');
* console.log(nm.compile(ast));
* // { options: { source: 'string' },
* // state: {},
* // compilers:
* // { eos: [Function],
* // noop: [Function],
* // bos: [Function],
* // brace: [Function],
* // 'brace.open': [Function],
* // text: [Function],
* // 'brace.close': [Function] },
* // output: [ 'a/(b|c)/d' ],
* // ast:
* // { ... },
* // parsingErrors: [] }
* ```
* @param {Object|String} `ast`
* @param {Object} `options`
* @return {Object} Returns an object that has an `output` property with the compiled string.
* @api public
*/
nanomatch.compile = function(ast, options) {
if (typeof ast === 'string') {
ast = nanomatch.parse(ast, options);
}
function compile() {
var snapdragon = utils.instantiate(ast, options);
compilers(snapdragon, options);
return snapdragon.compile(ast, options);
}
return memoize('compile', ast.input, options, compile);
};
/**
* Clear the regex cache.
*
* ```js
* nm.clearCache();
* ```
* @api public
*/
nanomatch.clearCache = function() {
nanomatch.cache.__data__ = {};
};
/**
* Compose a matcher function with the given patterns.
* This allows matcher functions to be compiled once and
* called multiple times.
*/
function compose(patterns, options, matcher) {
var matchers;
return memoize('compose', String(patterns), options, function() {
return function(file) {
// delay composition until it's invoked the first time,
// after that it won't be called again
if (!matchers) {
matchers = [];
for (var i = 0; i < patterns.length; i++) {
matchers.push(matcher(patterns[i], options));
}
}
var len = matchers.length;
while (len--) {
if (matchers[len](file) === true) {
return true;
}
}
return false;
};
});
}
/**
* Memoize a generated regex or function. A unique key is generated
* from the `type` (usually method name), the `pattern`, and
* user-defined options.
*/
function memoize(type, pattern, options, fn) {
var key = utils.createKey(type + '=' + pattern, options);
if (options && options.cache === false) {
return fn(pattern, options);
}
if (cache.has(type, key)) {
return cache.get(type, key);
}
var val = fn(pattern, options);
cache.set(type, key, val);
return val;
}
/**
* Expose compiler, parser and cache on `nanomatch`
*/
nanomatch.compilers = compilers;
nanomatch.parsers = parsers;
nanomatch.cache = cache;
/**
* Expose `nanomatch`
* @type {Function}
*/
module.exports = nanomatch;