summaryrefslogtreecommitdiffstats
path: root/middleware/node_modules/range-parser/README.md
blob: c247e826e67075a49071a07f830fadc62d28d86a (plain) (blame)
1
2
3
4
5
6
7
8
9
10
11
12
13
14
15
16
17
18
19
20
21
22
23
24
25
26
27
28
29
30
31
32
33
34
35
36
37
38
39
40
41
42
43
44
45
46
47
48
49
50
51
52
53
54
55
56
57
58
59
60
61
62
63
64
65
66
67
68
69
70
71
72
73
74
75
76
77
78
79
80
81
82
83
84
# range-parser

[![NPM Version][npm-version-image]][npm-url]
[![NPM Downloads][npm-downloads-image]][npm-url]
[![Node.js Version][node-image]][node-url]
[![Build Status][travis-image]][travis-url]
[![Test Coverage][coveralls-image]][coveralls-url]

Range header field parser.

## Installation

This is a [Node.js](https://nodejs.org/en/) module available through the
[npm registry](https://www.npmjs.com/). Installation is done using the
[`npm install` command](https://docs.npmjs.com/getting-started/installing-npm-packages-locally):

```sh
$ npm install range-parser
```

## API

<!-- eslint-disable no-unused-vars -->

```js
var parseRange = require('range-parser')
```

### parseRange(size, header, options)

Parse the given `header` string where `size` is the maximum size of the resource.
An array of ranges will be returned or negative numbers indicating an error parsing.

  * `-2` signals a malformed header string
  * `-1` signals an unsatisfiable range

<!-- eslint-disable no-undef -->

```js
// parse header from request
var range = parseRange(size, req.headers.range)

// the type of the range
if (range.type === 'bytes') {
  // the ranges
  range.forEach(function (r) {
    // do something with r.start and r.end
  })
}
```

#### Options

These properties are accepted in the options object.

##### combine

Specifies if overlapping & adjacent ranges should be combined, defaults to `false`.
When `true`, ranges will be combined and returned as if they were specified that
way in the header.

<!-- eslint-disable no-undef -->

```js
parseRange(100, 'bytes=50-55,0-10,5-10,56-60', { combine: true })
// => [
//      { start: 0,  end: 10 },
//      { start: 50, end: 60 }
//    ]
```

## License

[MIT](LICENSE)

[coveralls-image]: https://badgen.net/coveralls/c/github/jshttp/range-parser/master
[coveralls-url]: https://coveralls.io/r/jshttp/range-parser?branch=master
[node-image]: https://badgen.net/npm/node/range-parser
[node-url]: https://nodejs.org/en/download
[npm-downloads-image]: https://badgen.net/npm/dm/range-parser
[npm-url]: https://npmjs.org/package/range-parser
[npm-version-image]: https://badgen.net/npm/v/range-parser
[travis-image]: https://badgen.net/travis/jshttp/range-parser/master
[travis-url]: https://travis-ci.org/jshttp/range-parser