diff options
Diffstat (limited to 'node_modules/range-parser/index.js')
-rw-r--r-- | node_modules/range-parser/index.js | 158 |
1 files changed, 0 insertions, 158 deletions
diff --git a/node_modules/range-parser/index.js b/node_modules/range-parser/index.js deleted file mode 100644 index 83b2eb6..0000000 --- a/node_modules/range-parser/index.js +++ /dev/null @@ -1,158 +0,0 @@ -/*! - * 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) { - 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 -} |