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node_modules
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fs-vacuum
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Filename :
vacuum.js
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var assert = require('assert') var dirname = require('path').dirname var resolve = require('path').resolve var isInside = require('path-is-inside') var rimraf = require('rimraf') var lstat = require('graceful-fs').lstat var readdir = require('graceful-fs').readdir var rmdir = require('graceful-fs').rmdir var unlink = require('graceful-fs').unlink module.exports = vacuum function vacuum (leaf, options, cb) { assert(typeof leaf === 'string', 'must pass in path to remove') assert(typeof cb === 'function', 'must pass in callback') if (!options) options = {} assert(typeof options === 'object', 'options must be an object') var log = options.log ? options.log : function () {} leaf = leaf && resolve(leaf) var base = options.base && resolve(options.base) if (base && !isInside(leaf, base)) { return cb(new Error(leaf + ' is not a child of ' + base)) } lstat(leaf, function (error, stat) { if (error) { if (error.code === 'ENOENT') return cb(null) log(error.stack) return cb(error) } if (!(stat && (stat.isDirectory() || stat.isSymbolicLink() || stat.isFile()))) { log(leaf, 'is not a directory, file, or link') return cb(new Error(leaf + ' is not a directory, file, or link')) } if (options.purge) { log('purging', leaf) rimraf(leaf, function (error) { if (error) return cb(error) next(dirname(leaf)) }) } else if (!stat.isDirectory()) { log('removing', leaf) unlink(leaf, function (error) { if (error) return cb(error) next(dirname(leaf)) }) } else { next(leaf) } }) function next (branch) { branch = branch && resolve(branch) // either we've reached the base or we've reached the root if ((base && branch === base) || branch === dirname(branch)) { log('finished vacuuming up to', branch) return cb(null) } readdir(branch, function (error, files) { if (error) { if (error.code === 'ENOENT') return cb(null) log('unable to check directory', branch, 'due to', error.message) return cb(error) } if (files.length > 0) { log('quitting because other entries in', branch) return cb(null) } if (branch === process.env.HOME) { log('quitting because cannot remove home directory', branch) return cb(null) } log('removing', branch) lstat(branch, function (error, stat) { if (error) { if (error.code === 'ENOENT') return cb(null) log('unable to lstat', branch, 'due to', error.message) return cb(error) } var remove = stat.isDirectory() ? rmdir : unlink remove(branch, function (error) { if (error) { if (error.code === 'ENOENT') { log('quitting because lost the race to remove', branch) return cb(null) } if (error.code === 'ENOTEMPTY' || error.code === 'EEXIST') { log('quitting because new (racy) entries in', branch) return cb(null) } log('unable to remove', branch, 'due to', error.message) return cb(error) } next(dirname(branch)) }) }) }) } }