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