diff options
Diffstat (limited to 'deps/npm/node_modules/cmd-shim/node_modules/graceful-fs/graceful-fs.js')
-rw-r--r-- | deps/npm/node_modules/cmd-shim/node_modules/graceful-fs/graceful-fs.js | 158 |
1 files changed, 158 insertions, 0 deletions
diff --git a/deps/npm/node_modules/cmd-shim/node_modules/graceful-fs/graceful-fs.js b/deps/npm/node_modules/cmd-shim/node_modules/graceful-fs/graceful-fs.js new file mode 100644 index 0000000000..fb206b8385 --- /dev/null +++ b/deps/npm/node_modules/cmd-shim/node_modules/graceful-fs/graceful-fs.js @@ -0,0 +1,158 @@ +// Monkey-patching the fs module. +// It's ugly, but there is simply no other way to do this. +var fs = module.exports = require('./fs.js') + +var assert = require('assert') + +// fix up some busted stuff, mostly on windows and old nodes +require('./polyfills.js') + +var util = require('util') + +function noop () {} + +var debug = noop +if (util.debuglog) + debug = util.debuglog('gfs') +else if (/\bgfs\b/i.test(process.env.NODE_DEBUG || '')) + debug = function() { + var m = util.format.apply(util, arguments) + m = 'GFS: ' + m.split(/\n/).join('\nGFS: ') + console.error(m) + } + +if (/\bgfs\b/i.test(process.env.NODE_DEBUG || '')) { + process.on('exit', function() { + debug('fds', fds) + debug(queue) + assert.equal(queue.length, 0) + }) +} + + +var originalOpen = fs.open +fs.open = open + +function open(path, flags, mode, cb) { + if (typeof mode === "function") cb = mode, mode = null + if (typeof cb !== "function") cb = noop + new OpenReq(path, flags, mode, cb) +} + +function OpenReq(path, flags, mode, cb) { + this.path = path + this.flags = flags + this.mode = mode + this.cb = cb + Req.call(this) +} + +util.inherits(OpenReq, Req) + +OpenReq.prototype.process = function() { + originalOpen.call(fs, this.path, this.flags, this.mode, this.done) +} + +var fds = {} +OpenReq.prototype.done = function(er, fd) { + debug('open done', er, fd) + if (fd) + fds['fd' + fd] = this.path + Req.prototype.done.call(this, er, fd) +} + + +var originalReaddir = fs.readdir +fs.readdir = readdir + +function readdir(path, cb) { + if (typeof cb !== "function") cb = noop + new ReaddirReq(path, cb) +} + +function ReaddirReq(path, cb) { + this.path = path + this.cb = cb + Req.call(this) +} + +util.inherits(ReaddirReq, Req) + +ReaddirReq.prototype.process = function() { + originalReaddir.call(fs, this.path, this.done) +} + +ReaddirReq.prototype.done = function(er, files) { + if (files && files.sort) + files = files.sort() + Req.prototype.done.call(this, er, files) + onclose() +} + + +var originalClose = fs.close +fs.close = close + +function close (fd, cb) { + debug('close', fd) + if (typeof cb !== "function") cb = noop + delete fds['fd' + fd] + originalClose.call(fs, fd, function(er) { + onclose() + cb(er) + }) +} + + +var originalCloseSync = fs.closeSync +fs.closeSync = closeSync + +function closeSync (fd) { + try { + return originalCloseSync(fd) + } finally { + onclose() + } +} + + +// Req class +function Req () { + // start processing + this.done = this.done.bind(this) + this.failures = 0 + this.process() +} + +Req.prototype.done = function (er, result) { + var tryAgain = false + if (er) { + var code = er.code + var tryAgain = code === "EMFILE" || code === "ENFILE" + if (process.platform === "win32") + tryAgain = tryAgain || code === "OK" + } + + if (tryAgain) { + this.failures ++ + enqueue(this) + } else { + var cb = this.cb + cb(er, result) + } +} + +var queue = [] + +function enqueue(req) { + queue.push(req) + debug('enqueue %d %s', queue.length, req.constructor.name, req) +} + +function onclose() { + var req = queue.shift() + if (req) { + debug('process', req.constructor.name, req) + req.process() + } +} |