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92 lines
2.4 KiB
Markdown
92 lines
2.4 KiB
Markdown
# minimist
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parse argument options
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This module is the guts of optimist's argument parser without all the
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fanciful decoration.
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[](http://ci.testling.com/substack/minimist)
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[](http://travis-ci.org/substack/minimist)
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# example
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``` js
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var argv = require('minimist')(process.argv.slice(2));
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console.dir(argv);
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```
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```
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$ node example/parse.js -a beep -b boop
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{ _: [], a: 'beep', b: 'boop' }
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```
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```
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$ node example/parse.js -x 3 -y 4 -n5 -abc --beep=boop foo bar baz
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{ _: [ 'foo', 'bar', 'baz' ],
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x: 3,
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y: 4,
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n: 5,
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a: true,
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b: true,
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c: true,
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beep: 'boop' }
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```
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# methods
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``` js
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var parseArgs = require('minimist')
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```
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## var argv = parseArgs(args, opts={})
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Return an argument object `argv` populated with the array arguments from `args`.
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`argv._` contains all the arguments that didn't have an option associated with
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them.
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Numeric-looking arguments will be returned as numbers unless `opts.string` or
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`opts.boolean` is set for that argument name.
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Any arguments after `'--'` will not be parsed and will end up in `argv._`.
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options can be:
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* `opts.string` - a string or array of strings argument names to always treat as
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strings
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* `opts.boolean` - a boolean, string or array of strings to always treat as
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booleans. if `true` will treat all double hyphenated arguments without equal signs
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as boolean (e.g. affects `--foo`, not `-f` or `--foo=bar`)
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* `opts.alias` - an object mapping string names to strings or arrays of string
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argument names to use as aliases
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* `opts.default` - an object mapping string argument names to default values
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* `opts.stopEarly` - when true, populate `argv._` with everything after the
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first non-option
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* `opts['--']` - when true, populate `argv._` with everything before the `--`
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and `argv['--']` with everything after the `--`. Here's an example:
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* `opts.unknown` - a function which is invoked with a command line parameter not
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defined in the `opts` configuration object. If the function returns `false`, the
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unknown option is not added to `argv`.
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```
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> require('./')('one two three -- four five --six'.split(' '), { '--': true })
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{ _: [ 'one', 'two', 'three' ],
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'--': [ 'four', 'five', '--six' ] }
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```
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Note that with `opts['--']` set, parsing for arguments still stops after the
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`--`.
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# install
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With [npm](https://npmjs.org) do:
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```
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npm install minimist
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```
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# license
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MIT
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