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113 lines
2.0 KiB
113 lines
2.0 KiB
'use strict';
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var fs = require('fs');
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function emptyDir(dir, filter, cb) {
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if (arguments.length === 2) {
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cb = filter;
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filter = null;
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}
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if (cb && typeof cb !== 'function') {
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throw new TypeError('expected callback to be a function');
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}
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if (!Array.isArray(dir) && typeof dir !== 'string') {
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throw new TypeError('expected a directory or array of files');
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}
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var p = new Promise(function(resolve, reject) {
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if (Array.isArray(dir)) {
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return resolve(isEmpty(dir, filter));
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}
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fs.stat(dir, function(err, stat) {
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if (err || !stat.isDirectory()) {
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return resolve(false);
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}
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fs.readdir(dir, function(err, files) {
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if (err) {
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return reject(err);
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}
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resolve(isEmpty(files, filter));
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});
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});
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});
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if (cb) {
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p.then(function(result) {
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cb(null, result);
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}).catch(cb);
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return;
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}
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return p;
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}
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/**
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* Return true if the given `files` array has zero length or only
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* includes unwanted files.
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*/
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function emptyDirSync(dir, filter) {
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if (Array.isArray(dir)) {
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return isEmpty(dir, filter);
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}
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if (typeof dir !== 'string') {
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throw new TypeError('expected a directory or array of files');
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}
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if (!isDirectory(dir)) {
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return false;
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}
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var files = fs.readdirSync(dir);
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return isEmpty(files, filter);
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}
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/**
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* Returns true if the given "files" array is empty or only
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* contains unwanted files.
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*/
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function isEmpty(files, filter) {
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if (files.length === 0) {
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return true;
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}
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if (typeof filter !== 'function') {
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return false;
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}
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for (var i = 0; i < files.length; ++i) {
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if (filter(files[i]) === false) {
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return false;
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}
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}
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return true;
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}
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/**
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* Returns true if the filepath exists and is a directory
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*/
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function isDirectory(filepath) {
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try {
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return fs.statSync(filepath).isDirectory();
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} catch (err) {
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// Ignore error
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}
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return false;
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}
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/**
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* Expose `emptyDir`
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*/
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module.exports = emptyDir;
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module.exports.sync = emptyDirSync;
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module.exports.isEmpty = isEmpty;
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