100 lines
2.2 KiB
JavaScript
100 lines
2.2 KiB
JavaScript
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'use strict';
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/**
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* Module dependencies
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*/
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var fs = require('fs');
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var path = require('path');
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var isGlob = require('is-glob');
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var resolveDir = require('resolve-dir');
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var detect = require('detect-file');
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var mm = require('micromatch');
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/**
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* @param {String|Array} `pattern` Glob pattern or file path(s) to match against.
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* @param {Object} `options` Options to pass to [micromatch]. Note that if you want to start in a different directory than the current working directory, specify the `options.cwd` property here.
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* @return {String} Returns the first matching file.
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* @api public
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*/
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module.exports = function(patterns, options) {
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if (typeof patterns === 'string') {
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return lookup(patterns, options);
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}
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if (!Array.isArray(patterns)) {
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throw new TypeError('findup-sync expects a string or array as the first argument.');
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}
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var len = patterns.length;
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var idx = -1;
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while (++idx < len) {
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var res = lookup(patterns[idx], options);
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if (res) {
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return res;
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}
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}
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return null;
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};
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function lookup(pattern, options) {
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options = options || {};
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var cwd = path.resolve(resolveDir(options.cwd || ''));
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if (isGlob(pattern)) {
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return matchFile(cwd, pattern, options);
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} else {
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return findFile(cwd, pattern, options);
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}
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}
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function matchFile(cwd, pattern, opts) {
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var isMatch = mm.matcher(pattern, opts);
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var files = tryReaddirSync(cwd);
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var len = files.length;
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var idx = -1;
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while (++idx < len) {
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var name = files[idx];
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var fp = path.join(cwd, name);
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if (isMatch(name) || isMatch(fp)) {
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return fp;
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}
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}
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var dir = path.dirname(cwd);
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if (dir === cwd) {
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return null;
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}
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return matchFile(dir, pattern, opts);
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}
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function findFile(cwd, filename, options) {
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var res;
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var fp = cwd ? path.resolve(cwd, filename) : filename;
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if (res = detect(fp, options)) {
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return res;
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}
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var segs = cwd.split(path.sep);
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var len = segs.length;
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while (len--) {
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cwd = segs.slice(0, len).join(path.sep);
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fp = path.resolve(cwd, filename);
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if (res = detect(fp, options)) {
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return res;
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}
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}
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return null;
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}
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function tryReaddirSync(fp) {
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try {
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return fs.readdirSync(fp);
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} catch(err) {}
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return [];
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}
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