diff options
Diffstat (limited to 'node_modules/rimraf/rimraf.js')
| -rw-r--r-- | node_modules/rimraf/rimraf.js | 360 |
1 files changed, 360 insertions, 0 deletions
diff --git a/node_modules/rimraf/rimraf.js b/node_modules/rimraf/rimraf.js new file mode 100644 index 0000000..34da417 --- /dev/null +++ b/node_modules/rimraf/rimraf.js @@ -0,0 +1,360 @@ +const assert = require("assert") +const path = require("path") +const fs = require("fs") +let glob = undefined +try { + glob = require("glob") +} catch (_err) { + // treat glob as optional. +} + +const defaultGlobOpts = { + nosort: true, + silent: true +} + +// for EMFILE handling +let timeout = 0 + +const isWindows = (process.platform === "win32") + +const defaults = options => { + const methods = [ + 'unlink', + 'chmod', + 'stat', + 'lstat', + 'rmdir', + 'readdir' + ] + methods.forEach(m => { + options[m] = options[m] || fs[m] + m = m + 'Sync' + options[m] = options[m] || fs[m] + }) + + options.maxBusyTries = options.maxBusyTries || 3 + options.emfileWait = options.emfileWait || 1000 + if (options.glob === false) { + options.disableGlob = true + } + if (options.disableGlob !== true && glob === undefined) { + throw Error('glob dependency not found, set `options.disableGlob = true` if intentional') + } + options.disableGlob = options.disableGlob || false + options.glob = options.glob || defaultGlobOpts +} + +const rimraf = (p, options, cb) => { + if (typeof options === 'function') { + cb = options + options = {} + } + + assert(p, 'rimraf: missing path') + assert.equal(typeof p, 'string', 'rimraf: path should be a string') + assert.equal(typeof cb, 'function', 'rimraf: callback function required') + assert(options, 'rimraf: invalid options argument provided') + assert.equal(typeof options, 'object', 'rimraf: options should be object') + + defaults(options) + + let busyTries = 0 + let errState = null + let n = 0 + + const next = (er) => { + errState = errState || er + if (--n === 0) + cb(errState) + } + + const afterGlob = (er, results) => { + if (er) + return cb(er) + + n = results.length + if (n === 0) + return cb() + + results.forEach(p => { + const CB = (er) => { + if (er) { + if ((er.code === "EBUSY" || er.code === "ENOTEMPTY" || er.code === "EPERM") && + busyTries < options.maxBusyTries) { + busyTries ++ + // try again, with the same exact callback as this one. + return setTimeout(() => rimraf_(p, options, CB), busyTries * 100) + } + + // this one won't happen if graceful-fs is used. + if (er.code === "EMFILE" && timeout < options.emfileWait) { + return setTimeout(() => rimraf_(p, options, CB), timeout ++) + } + + // already gone + if (er.code === "ENOENT") er = null + } + + timeout = 0 + next(er) + } + rimraf_(p, options, CB) + }) + } + + if (options.disableGlob || !glob.hasMagic(p)) + return afterGlob(null, [p]) + + options.lstat(p, (er, stat) => { + if (!er) + return afterGlob(null, [p]) + + glob(p, options.glob, afterGlob) + }) + +} + +// Two possible strategies. +// 1. Assume it's a file. unlink it, then do the dir stuff on EPERM or EISDIR +// 2. Assume it's a directory. readdir, then do the file stuff on ENOTDIR +// +// Both result in an extra syscall when you guess wrong. However, there +// are likely far more normal files in the world than directories. This +// is based on the assumption that a the average number of files per +// directory is >= 1. +// +// If anyone ever complains about this, then I guess the strategy could +// be made configurable somehow. But until then, YAGNI. +const rimraf_ = (p, options, cb) => { + assert(p) + assert(options) + assert(typeof cb === 'function') + + // sunos lets the root user unlink directories, which is... weird. + // so we have to lstat here and make sure it's not a dir. + options.lstat(p, (er, st) => { + if (er && er.code === "ENOENT") + return cb(null) + + // Windows can EPERM on stat. Life is suffering. + if (er && er.code === "EPERM" && isWindows) + fixWinEPERM(p, options, er, cb) + + if (st && st.isDirectory()) + return rmdir(p, options, er, cb) + + options.unlink(p, er => { + if (er) { + if (er.code === "ENOENT") + return cb(null) + if (er.code === "EPERM") + return (isWindows) + ? fixWinEPERM(p, options, er, cb) + : rmdir(p, options, er, cb) + if (er.code === "EISDIR") + return rmdir(p, options, er, cb) + } + return cb(er) + }) + }) +} + +const fixWinEPERM = (p, options, er, cb) => { + assert(p) + assert(options) + assert(typeof cb === 'function') + + options.chmod(p, 0o666, er2 => { + if (er2) + cb(er2.code === "ENOENT" ? null : er) + else + options.stat(p, (er3, stats) => { + if (er3) + cb(er3.code === "ENOENT" ? null : er) + else if (stats.isDirectory()) + rmdir(p, options, er, cb) + else + options.unlink(p, cb) + }) + }) +} + +const fixWinEPERMSync = (p, options, er) => { + assert(p) + assert(options) + + try { + options.chmodSync(p, 0o666) + } catch (er2) { + if (er2.code === "ENOENT") + return + else + throw er + } + + let stats + try { + stats = options.statSync(p) + } catch (er3) { + if (er3.code === "ENOENT") + return + else + throw er + } + + if (stats.isDirectory()) + rmdirSync(p, options, er) + else + options.unlinkSync(p) +} + +const rmdir = (p, options, originalEr, cb) => { + assert(p) + assert(options) + assert(typeof cb === 'function') + + // try to rmdir first, and only readdir on ENOTEMPTY or EEXIST (SunOS) + // if we guessed wrong, and it's not a directory, then + // raise the original error. + options.rmdir(p, er => { + if (er && (er.code === "ENOTEMPTY" || er.code === "EEXIST" || er.code === "EPERM")) + rmkids(p, options, cb) + else if (er && er.code === "ENOTDIR") + cb(originalEr) + else + cb(er) + }) +} + +const rmkids = (p, options, cb) => { + assert(p) + assert(options) + assert(typeof cb === 'function') + + options.readdir(p, (er, files) => { + if (er) + return cb(er) + let n = files.length + if (n === 0) + return options.rmdir(p, cb) + let errState + files.forEach(f => { + rimraf(path.join(p, f), options, er => { + if (errState) + return + if (er) + return cb(errState = er) + if (--n === 0) + options.rmdir(p, cb) + }) + }) + }) +} + +// this looks simpler, and is strictly *faster*, but will +// tie up the JavaScript thread and fail on excessively +// deep directory trees. +const rimrafSync = (p, options) => { + options = options || {} + defaults(options) + + assert(p, 'rimraf: missing path') + assert.equal(typeof p, 'string', 'rimraf: path should be a string') + assert(options, 'rimraf: missing options') + assert.equal(typeof options, 'object', 'rimraf: options should be object') + + let results + + if (options.disableGlob || !glob.hasMagic(p)) { + results = [p] + } else { + try { + options.lstatSync(p) + results = [p] + } catch (er) { + results = glob.sync(p, options.glob) + } + } + + if (!results.length) + return + + for (let i = 0; i < results.length; i++) { + const p = results[i] + + let st + try { + st = options.lstatSync(p) + } catch (er) { + if (er.code === "ENOENT") + return + + // Windows can EPERM on stat. Life is suffering. + if (er.code === "EPERM" && isWindows) + fixWinEPERMSync(p, options, er) + } + + try { + // sunos lets the root user unlink directories, which is... weird. + if (st && st.isDirectory()) + rmdirSync(p, options, null) + else + options.unlinkSync(p) + } catch (er) { + if (er.code === "ENOENT") + return + if (er.code === "EPERM") + return isWindows ? fixWinEPERMSync(p, options, er) : rmdirSync(p, options, er) + if (er.code !== "EISDIR") + throw er + + rmdirSync(p, options, er) + } + } +} + +const rmdirSync = (p, options, originalEr) => { + assert(p) + assert(options) + + try { + options.rmdirSync(p) + } catch (er) { + if (er.code === "ENOENT") + return + if (er.code === "ENOTDIR") + throw originalEr + if (er.code === "ENOTEMPTY" || er.code === "EEXIST" || er.code === "EPERM") + rmkidsSync(p, options) + } +} + +const rmkidsSync = (p, options) => { + assert(p) + assert(options) + options.readdirSync(p).forEach(f => rimrafSync(path.join(p, f), options)) + + // We only end up here once we got ENOTEMPTY at least once, and + // at this point, we are guaranteed to have removed all the kids. + // So, we know that it won't be ENOENT or ENOTDIR or anything else. + // try really hard to delete stuff on windows, because it has a + // PROFOUNDLY annoying habit of not closing handles promptly when + // files are deleted, resulting in spurious ENOTEMPTY errors. + const retries = isWindows ? 100 : 1 + let i = 0 + do { + let threw = true + try { + const ret = options.rmdirSync(p, options) + threw = false + return ret + } finally { + if (++i < retries && threw) + continue + } + } while (true) +} + +module.exports = rimraf +rimraf.sync = rimrafSync |