1 2 3 4 5 6 7 8 9 10 11 12 13 14 15 16 17 18 19 20 21 22 23 24 25 26 27 28 29 30 31 32 33 34 35 36 37 38 39 40 41 42 43 44 45 46 47 48 49 50 51 52 53 54 55 56 57 58 59 60 61 62 63 64 65 66 67 68 69 70 71 72 73 74 75 76 77 78 79 80 81 82 83 84 85 86 87 88 89 90 91 92 93 94 95 96 97 98 99 100 101 102 103 104 105 106 107 108 109 110 111 112 113 114 115 116 117 118 119 120 121 122 123 124 125 126 127 128 129 130 131 132 133 134 135 136 137 138 139 140 141 142 143 144 145 146 147 | 1x 1x 11x 11x 11x 11x 11x 11x 11x 51x 51x 51x 51x 51x 51x 51x 51x 11x 204x 204x 204x 204x 204x 30x 204x 30x 15x 30x 204x 11x 11x 11x 11x 11x 11x 1x 11x 1x 10x 10x 11x 10x 1x 1x 1x 1x 8x 8x 1x | 'use strict' var _ = require('underscore') function DFHelper() {} _.extend(DFHelper, { noop: function() {}, parse: function(stdout, options) { Iif (!stdout) { return void 0 } var multiplier = DFHelper.getMultiplierByPrefix(options.prefixMultiplier) var isDisplayPrefixMultiplier = !!options.isDisplayPrefixMultiplier var displayedPrefixMultiplier = isDisplayPrefixMultiplier ? options.prefixMultiplier : null var precision = options.precision var format = DFHelper.format var response = _( stdout .trim() // split into rows .split(/\r|\n|\r\n/) // strip column headers away .slice(1) ).map(function(row) { var columns = row // one or more whitespaces followed by one or more digits // must be interpreted as column delimiter .replace(/\s+(\d+)/g, '\t$1') // one or more whitespaces followed by a slash // must be interpreted as the last column delimiter .replace(/\s+\//g, '\t/') // split into columns .split(/\t/) var filesystem = columns[0] var size = format(columns[1], multiplier, precision, displayedPrefixMultiplier) var used = format(columns[2], multiplier, precision, displayedPrefixMultiplier) var available = format(columns[3], multiplier, precision, displayedPrefixMultiplier) var capacity = format(columns[4], 0.01) var mount = _.rest(columns, 5).join(' ') return { filesystem: filesystem, size: size, used: used, available: available, capacity: capacity, mount: mount, } }) return response }, format: function(s, multiplier, precision, displayedPrefixMultiplier) { multiplier = multiplier || 1 var tmp = parseInt(s, 10) * multiplier var amount = Math.pow(10, precision) var hasPrecision = _.isNumber(precision) if (hasPrecision) { tmp = Math.round(tmp * amount) / amount } if (displayedPrefixMultiplier) { if (hasPrecision) { tmp = tmp.toFixed(precision) } tmp = tmp + displayedPrefixMultiplier } return tmp }, getMultiplierByPrefix: function(prefix) { var prefixMultipliers = DFHelper.getPrefixMultipliers() var defaultPrefix = 'KiB' var defaultMultiplier = 1024 var multiplier = 1 // prefixes are case insensitive prefix = (prefix || defaultPrefix).toLowerCase() // invalid prefix multipliers are ignored if (!prefixMultipliers[prefix]) { prefix = defaultPrefix } // df outputs sizes in KiB // nothing to do if (prefix === defaultPrefix) { return multiplier } // convert to bytes then convert to unit of choice multiplier = defaultMultiplier / prefixMultipliers[prefix] return multiplier }, getPrefixMultipliers: function() { if (DFHelper._prefixMultipliers) { return DFHelper._prefixMultipliers } var pow2 = DFHelper._pow2 var pow10 = DFHelper._pow10 DFHelper._prefixMultipliers = { kib: pow2(10), mib: pow2(20), gib: pow2(30), tib: pow2(40), pib: pow2(50), eib: pow2(60), zib: pow2(70), yib: pow2(80), kb: pow10(3), mb: pow10(6), gb: pow10(9), tb: pow10(12), pb: pow10(15), eb: pow10(18), zb: pow10(21), yb: pow10(24), } return DFHelper._prefixMultipliers }, _pow2: function(exponent) { return Math.pow(2, exponent) }, _pow10: function(exponent) { return Math.pow(10, exponent) }, _prefixMultipliers: null, }) module.exports = DFHelper |