66 lines
2.7 KiB
Markdown
66 lines
2.7 KiB
Markdown
<p align="center">
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<a href="http://gulpjs.com">
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<img height="257" width="114" src="https://raw.githubusercontent.com/gulpjs/artwork/master/gulp-2x.png">
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</a>
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</p>
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# fs-mkdirp-stream
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[![NPM version][npm-image]][npm-url] [![Downloads][downloads-image]][npm-url] [![Build Status][travis-image]][travis-url] [![AppVeyor Build Status][appveyor-image]][appveyor-url] [![Coveralls Status][coveralls-image]][coveralls-url] [![Gitter chat][gitter-image]][gitter-url]
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Ensure directories exist before writing to them.
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## Usage
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```js
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var to = require('to2');
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var from = require('from2');
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var mkdirpStream = require('fs-mkdirp-stream');
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from.obj([{ dirname: '/path/to/my/', path: '/path/to/my/file.js' }])
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.pipe(mkdirpStream.obj(function(obj, callback) {
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// callback can take 3 arguments (err, dirname, mode)
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callback(null, obj.dirname);
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}))
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.pipe(to.obj(function(obj) {
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// This will be called once the directory exists
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// obj === { dirname: '/path/to/my/', path: '/path/to/my/file.js' }
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}));
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```
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## API
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### `mkdirpStream(resolver)`
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Takes a `resolver` function or string and returns a `through2` stream.
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If the `resolver` is a function, it will be called once per chunk with the signature `(chunk, callback)`. The `callback(error, dirpath, mode)` must be called with the `dirpath` to be created as the 2nd parameter or an `error` as the 1st parameter; optionally with a `mode` as the 3rd parameter.
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If the `resolver` is a string, it will be created/ensured for each chunk (e.g. if it were deleted between chunks, it would be recreated). When using a string, a custom `mode` can't be used.
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### `mkdirpStream.obj(resolver)`
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The same as the top-level API but for object streams. See the example to see the benefit of object streams with this module.
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## License
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MIT
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Contains a custom implementation of `mkdirp` originally based on https://github.com/substack/node-mkdirp (Licensed MIT/X11 - Copyright 2010 James Halliday) with heavy modification to better support custom modes.
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[downloads-image]: http://img.shields.io/npm/dm/fs-mkdirp-stream.svg
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[npm-url]: https://npmjs.com/package/fs-mkdirp-stream
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[npm-image]: http://img.shields.io/npm/v/fs-mkdirp-stream.svg
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[travis-url]: https://travis-ci.org/gulpjs/fs-mkdirp-stream
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[travis-image]: http://img.shields.io/travis/gulpjs/fs-mkdirp-stream.svg?label=travis-ci
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[appveyor-url]: https://ci.appveyor.com/project/gulpjs/fs-mkdirp-stream
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[appveyor-image]: https://img.shields.io/appveyor/ci/gulpjs/fs-mkdirp-stream.svg?label=appveyor
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[coveralls-url]: https://coveralls.io/r/gulpjs/fs-mkdirp-stream
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[coveralls-image]: http://img.shields.io/coveralls/gulpjs/fs-mkdirp-stream/master.svg
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[gitter-url]: https://gitter.im/gulpjs/gulp
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[gitter-image]: https://badges.gitter.im/gulpjs/gulp.png
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