range-parser

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Range header field parser.

Installation

This is a Node.js module available through the npm registry. Installation is done using the npm install command:

$ npm install range-parser

API

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

// 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.

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

License

MIT

[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