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yapm

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package manager for io.js (npm fork)

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'use strict' var fs = require('graceful-fs'); var chain = require('slide').chain; var crypto = require('crypto'); var md5hex = function () { var hash = crypto.createHash('md5'); for (var ii=0; ii<arguments.length; ++ii) hash.update(''+arguments[ii]) return hash.digest('hex') } var invocations = 0; var getTmpname = function (filename) { return filename + "." + md5hex(__filename, process.pid, ++invocations) } module.exports = function writeFile(filename, data, options, callback) { if (options instanceof Function) { callback = options; options = null; } if (!options) options = {}; var tmpfile = getTmpname(filename); chain([ [fs, fs.writeFile, tmpfile, data, options], options.chown && [fs, fs.chown, tmpfile, options.chown.uid, options.chown.gid], [fs, fs.rename, tmpfile, filename] ], function (err) { err ? fs.unlink(tmpfile, function () { callback(err) }) : callback() }) } module.exports.sync = function writeFileSync(filename, data, options) { if (!options) options = {}; var tmpfile = getTmpname(filename); try { fs.writeFileSync(tmpfile, data, options); if (options.chown) fs.chownSync(tmpfile, options.chown.uid, options.chown.gid); fs.renameSync(tmpfile, filename); } catch (err) { try { fs.unlinkSync(tmpfile) } catch(e) {} throw err; } }