147 lines
4.4 KiB
Markdown
147 lines
4.4 KiB
Markdown
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<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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# glob-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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A [Readable Stream][readable-stream-url] interface over [node-glob][node-glob-url].
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## Usage
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```javascript
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var gs = require('glob-stream');
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var readable = gs('./files/**/*.coffee', { /* options */ });
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var writable = /* your WriteableStream */
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readable.pipe(writable);
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```
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You can pass any combination of glob strings. One caveat is that you cannot __only__ pass a negative glob, you must give it at least one positive glob so it knows where to start. If given a non-glob path (also referred to as a singular glob), only one file will be emitted. If given a singular glob and no files match, an error is emitted (see also [`options.allowEmpty`][allow-empty-url]).
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## API
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### `globStream(globs, options)`
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Takes a glob string or an array of glob strings as the first argument and an options object as the second. Returns a stream of objects that contain `cwd`, `base` and `path` properties.
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#### Options
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##### `options.allowEmpty`
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Whether or not to error upon an empty singular glob.
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Type: `Boolean`
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Default: `false` (error upon no match)
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##### `options.dot`
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Whether or not to treat dotfiles as regular files. This is passed through to [node-glob][node-glob-url].
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Type: `Boolean`
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Default: `false`
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##### `options.silent`
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Whether or not to suppress warnings on stderr from [node-glob][node-glob-url]. This is passed through to [node-glob][node-glob-url].
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Type: `Boolean`
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Default: `true`
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##### `options.cwd`
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The current working directory that the glob is resolved against.
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Type: `String`
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Default: `process.cwd()`
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##### `options.root`
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The root path that the glob is resolved against.
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__Note: This is never passed to [node-glob][node-glob-url] because it is pre-resolved against your paths.__
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Type: `String`
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Default: `undefined` (use the filesystem root)
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##### `options.base`
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The absolute segment of the glob path that isn't a glob. This value is attached to each glob object and is useful for relative pathing.
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Type: `String`
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Default: The absolute path segement before a glob starts (see [glob-parent][glob-parent-url])
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##### `options.cwdbase`
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Whether or not the `cwd` and `base` should be the same.
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Type: `Boolean`
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Default: `false`
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##### `options.uniqueBy`
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Filters stream to remove duplicates based on the string property name or the result of function. When using a function, the function receives the streamed data (objects containing `cwd`, `base`, `path` properties) to compare against.
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Type: `String` or `Function`
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Default: `'path'`
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##### other
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Any glob-related options are documented in [node-glob][node-glob-url]. Those options are forwarded verbatim, with the exception of `root` and `ignore`. `root` is pre-resolved and `ignore` is joined with all negative globs.
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#### Globbing & Negation
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```js
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var stream = gs(['./**/*.js', '!./node_modules/**/*']);
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```
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Globs are executed in order, so negations should follow positive globs. For example:
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The following would __not__ exclude any files:
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```js
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gs(['!b*.js', '*.js'])
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```
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However, this would exclude all files that started with `b`:
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```js
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gs(['*.js', '!b*.js'])
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```
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## License
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MIT
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[node-glob-url]: https://github.com/isaacs/node-glob
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[glob-parent-url]: https://github.com/es128/glob-parent
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[allow-empty-url]: #optionsallowempty
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[readable-stream-url]: https://nodejs.org/api/stream.html#stream_readable_streams
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[downloads-image]: http://img.shields.io/npm/dm/glob-stream.svg
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[npm-url]: https://www.npmjs.com/package/glob-stream
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[npm-image]: http://img.shields.io/npm/v/glob-stream.svg
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[travis-url]: https://travis-ci.org/gulpjs/glob-stream
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[travis-image]: http://img.shields.io/travis/gulpjs/glob-stream.svg?label=travis-ci
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[appveyor-url]: https://ci.appveyor.com/project/gulpjs/glob-stream
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[appveyor-image]: https://img.shields.io/appveyor/ci/gulpjs/glob-stream.svg?label=appveyor
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[coveralls-url]: https://coveralls.io/r/gulpjs/glob-stream
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[coveralls-image]: http://img.shields.io/coveralls/gulpjs/glob-stream.svg
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[gitter-url]: https://gitter.im/gulpjs/gulp
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[gitter-image]: https://badges.gitter.im/gulpjs/gulp.svg
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