FM / range-parser

/var/www/qr4y.kz/server/delivery/node_modules/range-parser/

/var/www/qr4y.kz/server/delivery/node_modules/range-parser

Name	Size	Mode	Actions
HISTORY.md	917	0644	edit dl rm
index.js	2900	0644	edit dl rm
LICENSE	1178	0644	edit dl rm
package.json	2405	0644	edit dl rm
README.md	2278	0644	edit dl rm

Edit: /var/www/qr4y.kz/server/delivery/node_modules/range-parser/index.js (2900B)

/*!
 * range-parser
 * Copyright(c) 2012-2014 TJ Holowaychuk
 * Copyright(c) 2015-2016 Douglas Christopher Wilson
 * MIT Licensed
 */

'use strict'

/**
 * Module exports.
 * @public
 */

module.exports = rangeParser

/**
 * Parse "Range" header `str` relative to the given file `size`.
 *
 * @param {Number} size
 * @param {String} str
 * @param {Object} [options]
 * @return {Array}
 * @public
 */

function rangeParser (size, str, options) {
  if (typeof str !== 'string') {
    throw new TypeError('argument str must be a string')
  }

var index = str.indexOf('=')

if (index === -1) {
    return -2
  }

// split the range string
  var arr = str.slice(index + 1).split(',')
  var ranges = []

// add ranges type
  ranges.type = str.slice(0, index)

// parse all ranges
  for (var i = 0; i < arr.length; i++) {
    var range = arr[i].split('-')
    var start = parseInt(range[0], 10)
    var end = parseInt(range[1], 10)

// -nnn
    if (isNaN(start)) {
      start = size - end
      end = size - 1
    // nnn-
    } else if (isNaN(end)) {
      end = size - 1
    }

// limit last-byte-pos to current length
    if (end > size - 1) {
      end = size - 1
    }

// invalid or unsatisifiable
    if (isNaN(start) || isNaN(end) || start > end || start < 0) {
      continue
    }

// add range
    ranges.push({
      start: start,
      end: end
    })
  }

if (ranges.length < 1) {
    // unsatisifiable
    return -1
  }

return options && options.combine
    ? combineRanges(ranges)
    : ranges
}

/**
 * Combine overlapping & adjacent ranges.
 * @private
 */

function combineRanges (ranges) {
  var ordered = ranges.map(mapWithIndex).sort(sortByRangeStart)

for (var j = 0, i = 1; i < ordered.length; i++) {
    var range = ordered[i]
    var current = ordered[j]

if (range.start > current.end + 1) {
      // next range
      ordered[++j] = range
    } else if (range.end > current.end) {
      // extend range
      current.end = range.end
      current.index = Math.min(current.index, range.index)
    }
  }

// trim ordered array
  ordered.length = j + 1

// generate combined range
  var combined = ordered.sort(sortByRangeIndex).map(mapWithoutIndex)

// copy ranges type
  combined.type = ranges.type

return combined
}

/**
 * Map function to add index value to ranges.
 * @private
 */

function mapWithIndex (range, index) {
  return {
    start: range.start,
    end: range.end,
    index: index
  }
}

/**
 * Map function to remove index value from ranges.
 * @private
 */

function mapWithoutIndex (range) {
  return {
    start: range.start,
    end: range.end
  }
}

/**
 * Sort function to sort ranges by index.
 * @private
 */

function sortByRangeIndex (a, b) {
  return a.index - b.index
}

/**
 * Sort function to sort ranges by start position.
 * @private
 */

function sortByRangeStart (a, b) {
  return a.start - b.start
}

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