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authorgrant-kun <[email protected]>2022-09-26 11:32:15 -0500
committergrant-kun <[email protected]>2022-09-26 11:32:15 -0500
commitfb1a557749b7b83e9e732df7c65cdb3f17d0400a (patch)
tree681d83ad203c94e322aa84a7e2e65d5cc679370e /node_modules/range-parser/index.js
parent34e9facde87cac19e7d68f6ffce28546d92c9979 (diff)
parent4b237cd7f3d9ebffdfc60d987c4df3c2595c3b7c (diff)
Merge branch 'main' of https://github.com/squiresgrant/kanna-site
Diffstat (limited to 'node_modules/range-parser/index.js')
-rw-r--r--node_modules/range-parser/index.js162
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diff --git a/node_modules/range-parser/index.js b/node_modules/range-parser/index.js
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-/*!
- * 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
-}