mirror of https://github.com/Radarr/Radarr
154 lines
3.4 KiB
JavaScript
154 lines
3.4 KiB
JavaScript
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/**
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* filesize
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*
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* @author Jason Mulligan <jason.mulligan@avoidwork.com>
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* @copyright 2013 Jason Mulligan
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* @license BSD-3 <https://raw.github.com/avoidwork/filesize.js/master/LICENSE>
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* @link http://filesizejs.com
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* @module filesize
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* @version 1.10.0
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*/
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( function ( global ) {
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"use strict";
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var base = 10,
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right = /\.(.*)/,
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bit = /b$/,
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bite = /^B$/,
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zero = /^0$/,
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options;
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options = {
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all : {
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increments : [["B", 1], ["kb", 125], ["kB", 1000], ["Mb", 125000], ["MB", 1000000], ["Gb", 125000000], ["GB", 1000000000], ["Tb", 125000000000], ["TB", 1000000000000], ["Pb", 125000000000000], ["PB", 1000000000000000]],
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nth : 11
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},
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bitless : {
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increments : [["B", 1], ["kB", 1000], ["MB", 1000000], ["GB", 1000000000], ["TB", 1000000000000], ["PB", 1000000000000000]],
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nth : 6
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}
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};
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/**
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* filesize
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*
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* @param {Mixed} arg String, Int or Float to transform
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* @param {Mixed} pos [Optional] Position to round to, defaults to 2 if shrt is ommitted, or `true` for shrthand output
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* @param {Boolean} bits [Optional] Determines if `bit` sizes are used for result calculation, default is true
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* @return {String} Readable file size String
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*/
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function filesize ( arg) {
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var result = "",
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bits = true,
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skip = false,
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i, neg, num, pos, shrt, size, sizes, suffix, z;
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// Determining arguments
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if (arguments[3] !== undefined) {
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pos = arguments[1];
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shrt = arguments[2];
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bits = arguments[3];
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}
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else {
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typeof arguments[1] === "boolean" ? shrt = arguments[1] : pos = arguments[1];
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if ( typeof arguments[2] === "boolean" ) {
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bits = arguments[2];
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}
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}
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if ( isNaN( arg ) || ( pos !== undefined && isNaN( pos ) ) ) {
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throw new Error("Invalid arguments");
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}
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shrt = ( shrt === true );
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bits = ( bits === true );
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pos = shrt ? 1 : ( pos === undefined ? 2 : parseInt( pos, base ) );
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num = Number( arg );
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neg = ( num < 0 );
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// Flipping a negative number to determine the size
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if ( neg ) {
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num = -num;
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}
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// Zero is now a special case because bytes divide by 1
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if ( num === 0 ) {
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if ( shrt ) {
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result = "0";
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}
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else {
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result = "0 B";
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}
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}
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else {
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if ( bits ) {
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sizes = options.all.increments;
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i = options.all.nth;
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}
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else {
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sizes = options.bitless.increments;
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i = options.bitless.nth;
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}
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while ( i-- ) {
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size = sizes[i][1];
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suffix = sizes[i][0];
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if ( num >= size ) {
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// Treating bytes as cardinal
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if ( bite.test( suffix ) ) {
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skip = true;
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pos = 0;
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}
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result = ( num / size ).toFixed( pos );
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if ( !skip && shrt ) {
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if ( bits && bit.test( suffix ) ) {
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suffix = suffix.toLowerCase();
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}
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suffix = suffix.charAt( 0 );
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z = right.exec( result );
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if ( suffix === "k" ) {
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suffix = "K";
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}
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if ( z !== null && z[1] !== undefined && zero.test( z[1] ) ) {
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result = parseInt( result, base );
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}
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result += suffix;
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}
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else if ( !shrt ) {
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result += " " + suffix;
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}
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break;
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}
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}
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}
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// Decorating a 'diff'
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if ( neg ) {
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result = "-" + result;
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}
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return result;
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}
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// CommonJS, AMD, script tag
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if ( typeof exports !== "undefined" ) {
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module.exports = filesize;
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}
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else if ( typeof define === "function" ) {
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define( function () {
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return filesize;
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});
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}
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else {
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global.filesize = filesize;
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}
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})( this );
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