range-parser

range-parser

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