init

Author: jonathanong

.gitignore

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+
+.DS_Store*
+*.log
+*.gz
+
+node_modules
+coverage
+build

.travis.yml

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+node_js:
+- "0.10"
+- "0.11"
+language: node_js
+script: "npm run test-travis"
+after_script: "npm install coveralls@2 && cat ./coverage/lcov.info | coveralls"

LICENSE

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+
+The MIT License (MIT)
+
+Copyright (c) 2014 Jonathan Ong [email protected]
+
+Permission is hereby granted, free of charge, to any person obtaining a copy
+of this software and associated documentation files (the "Software"), to deal
+in the Software without restriction, including without limitation the rights
+to use, copy, modify, merge, publish, distribute, sublicense, and/or sell
+copies of the Software, and to permit persons to whom the Software is
+furnished to do so, subject to the following conditions:
+
+The above copyright notice and this permission notice shall be included in
+all copies or substantial portions of the Software.
+
+THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR
+IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,
+FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL THE
+AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER
+LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM,
+OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN
+THE SOFTWARE.

README.md

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+
+# cp
+
+[![NPM version][npm-image]][npm-url]
+[![Latest tag][github-tag]][github-url]
+[![Build status][travis-image]][travis-url]
+[![Test coverage][coveralls-image]][coveralls-url]
+[![Dependency Status][david-image]][david-url]
+[![License][license-image]][license-url]
+[![Downloads][downloads-image]][downloads-url]
+[![Gittip][gittip-image]][gittip-url]
+
+Copy files with error handling and promise support.
+Specifically, if the process crashes while you're copying a file,
+you won't end up with half-written copied files.
+It should also avoid race conditions, meaning
+you should be able to `cp` the same files at the same time and it'll be fine.
+
+## API
+
+```js
+var cp = require('fs-cp')
+
+cp('package.json', 'package2.json').then(function () {
+
+})
+```
+
+[npm-image]: https://img.shields.io/npm/v/fs-cp.svg?style=flat-square
+[npm-url]: https://npmjs.org/package/fs-cp
+[github-tag]: http://img.shields.io/github/tag/fs-utils/cp.svg?style=flat-square
+[github-url]: https://github.com/fs-utils/cp/tags
+[travis-image]: https://img.shields.io/travis/fs-utils/cp.svg?style=flat-square
+[travis-url]: https://travis-ci.org/fs-utils/cp
+[coveralls-image]: https://img.shields.io/coveralls/fs-utils/cp.svg?style=flat-square
+[coveralls-url]: https://coveralls.io/r/fs-utils/cp?branch=master
+[david-image]: http://img.shields.io/david/fs-utils/cp.svg?style=flat-square
+[david-url]: https://david-dm.org/fs-utils/cp
+[license-image]: http://img.shields.io/npm/l/cp.svg?style=flat-square
+[license-url]: LICENSE.md
+[downloads-image]: http://img.shields.io/npm/dm/fs-cp.svg?style=flat-square
+[downloads-url]: https://npmjs.org/package/fs-cp
+[gittip-image]: https://img.shields.io/gittip/jonathanong.svg?style=flat-square
+[gittip-url]: https://www.gittip.com/jonathanong/

index.js

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+
+var fs = require('mz/fs')
+var path = require('path')
+var Promise = require('native-or-bluebird')
+
+module.exports = function (src, dest) {
+  src = path.resolve(src)
+  dest = path.resolve(dest)
+  // where the file will be temporarily copied to
+  // it'll be saved to the same folder, then renamed.
+  var tmp = dest + affix()
+
+  return new Promise(function (resolve, reject) {
+    var read = fs.createReadStream(src)
+      .on('error', onerror)
+    var write = fs.createWriteStream(tmp)
+      .on('error', onerror)
+      .on('close', onclose)
+
+    read.pipe(write)
+
+    function onerror(err) {
+      fs.unlink(tmp)
+      cleanup()
+      reject(err)
+    }
+
+    function onclose() {
+      cleanup()
+      resolve()
+    }
+
+    function cleanup() {
+      read.removeListener('error', onerror)
+      write.removeListener('error', onerror)
+      write.removeListener('close', onclose)
+    }
+  }).then(function () {
+    return fs.rename(tmp, dest)
+  })
+}
+
+// an affix to attach to the temporary file
+// to avoid race conditions and
+function affix() {
+  return '.' + random() + '.tmp'
+}
+
+function random() {
+  return Math.random().toString(36).slice(2)
+}

package.json

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+{
+  "name": "fs-cp",
+  "description": "",
+  "version": "0.0.0",
+  "author": {
+    "name": "Jonathan Ong",
+    "email": "[email protected]",
+    "url": "http://jongleberry.com",
+    "twitter": "https://twitter.com/jongleberry"
+  },
+  "license": "MIT",
+  "repository": "fs-utils/cp",
+  "dependencies": {
+    "mz": "1",
+    "native-or-bluebird": "1"
+  },
+  "devDependencies": {
+    "mkdirp": "0",
+    "rimraf": "2",
+    "istanbul": "0",
+    "mocha": "1"
+  },
+  "scripts": {
+    "test": "mocha --reporter spec",
+    "test-cov": "istanbul cover node_modules/mocha/bin/_mocha -- --reporter dot",
+    "test-travis": "istanbul cover node_modules/mocha/bin/_mocha --report lcovonly -- --reporter dot"
+  },
+  "keywords": [
+    "fs",
+    "cp",
+    "copy"
+  ],
+  "files": [
+    "index.js"
+  ]
+}

test/index.js

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+
+var fs = require('mz/fs')
+var path = require('path')
+
+var cp = require('..')
+
+var build = path.join(__dirname, '..', 'build')
+
+require('rimraf').sync(build)
+require('mkdirp').sync(build)
+
+describe('fs-cp', function () {
+  it('should copy', function () {
+    var out = path.join(build, 'test.js')
+    return cp(__filename, out).then(function () {
+      return fs.stat(out)
+    })
+  })
+})