From 3c51c3be85bb0d1bdb87ea0d6632f1c256912f27 Mon Sep 17 00:00:00 2001 From: Dimitri Staessens Date: Sun, 6 Oct 2019 21:37:45 +0200 Subject: build: Add some required modules for node --- node_modules/fs-extra/lib/remove/rimraf.js | 314 +++++++++++++++++++++++++++++ 1 file changed, 314 insertions(+) create mode 100644 node_modules/fs-extra/lib/remove/rimraf.js (limited to 'node_modules/fs-extra/lib/remove/rimraf.js') diff --git a/node_modules/fs-extra/lib/remove/rimraf.js b/node_modules/fs-extra/lib/remove/rimraf.js new file mode 100644 index 0000000..f078694 --- /dev/null +++ b/node_modules/fs-extra/lib/remove/rimraf.js @@ -0,0 +1,314 @@ +'use strict' + +const fs = require('graceful-fs') +const path = require('path') +const assert = require('assert') + +const isWindows = (process.platform === 'win32') + +function 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 +} + +function rimraf (p, options, cb) { + let busyTries = 0 + + 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) + + rimraf_(p, options, function CB (er) { + if (er) { + if ((er.code === 'EBUSY' || er.code === 'ENOTEMPTY' || er.code === 'EPERM') && + busyTries < options.maxBusyTries) { + busyTries++ + let time = busyTries * 100 + // try again, with the same exact callback as this one. + return setTimeout(() => rimraf_(p, options, CB), time) + } + + // already gone + if (er.code === 'ENOENT') er = null + } + + cb(er) + }) +} + +// 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. +function 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) { + return 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) + }) + }) +} + +function fixWinEPERM (p, options, er, cb) { + assert(p) + assert(options) + assert(typeof cb === 'function') + if (er) { + assert(er instanceof Error) + } + + 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) + } + }) + } + }) +} + +function fixWinEPERMSync (p, options, er) { + let stats + + assert(p) + assert(options) + if (er) { + assert(er instanceof Error) + } + + try { + options.chmodSync(p, 0o666) + } catch (er2) { + if (er2.code === 'ENOENT') { + return + } else { + throw er + } + } + + 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) + } +} + +function rmdir (p, options, originalEr, cb) { + assert(p) + assert(options) + if (originalEr) { + assert(originalEr instanceof Error) + } + 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) + } + }) +} + +function 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 + let errState + + if (n === 0) return options.rmdir(p, cb) + + 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. +function rimrafSync (p, options) { + let st + + 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') + + 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 + } else if (er.code === 'EPERM') { + return isWindows ? fixWinEPERMSync(p, options, er) : rmdirSync(p, options, er) + } else if (er.code !== 'EISDIR') { + throw er + } + rmdirSync(p, options, er) + } +} + +function rmdirSync (p, options, originalEr) { + assert(p) + assert(options) + if (originalEr) { + assert(originalEr instanceof Error) + } + + try { + options.rmdirSync(p) + } catch (er) { + if (er.code === 'ENOTDIR') { + throw originalEr + } else if (er.code === 'ENOTEMPTY' || er.code === 'EEXIST' || er.code === 'EPERM') { + rmkidsSync(p, options) + } else if (er.code !== 'ENOENT') { + throw er + } + } +} + +function 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 // eslint-disable-line + } + } while (true) +} + +module.exports = rimraf +rimraf.sync = rimrafSync -- cgit v1.2.3