| <!DOCTYPE html> |
| <!-- |
| Copyright (c) 2015 The Chromium Authors. All rights reserved. |
| Use of this source code is governed by a BSD-style license that can be |
| found in the LICENSE file. |
| --> |
| |
| <link rel="import" href="/base/base.html"> |
| |
| <script> |
| 'use strict'; |
| |
| tr.exportTo('tr.b.units', function() { |
| var UNIT_PREFIXES = ['', 'Ki', 'Mi', 'Gi', 'Ti']; |
| |
| /** |
| * Float wrapper, representing a size in bytes, capable of pretty-printing. |
| */ |
| function SizeInBytes(numBytes) { |
| this.numBytes = numBytes; |
| }; |
| |
| SizeInBytes.prototype = { |
| toString: function() { |
| return SizeInBytes.format(this.numBytes); |
| } |
| }; |
| |
| SizeInBytes.format = function(numBytes) { |
| var signPrefix = ''; |
| if (numBytes < 0) { |
| signPrefix = '-'; |
| numBytes = -numBytes; |
| } |
| |
| var i = 0; |
| while (numBytes >= 1024 && i < UNIT_PREFIXES.length - 1) { |
| numBytes /= 1024; |
| i++; |
| } |
| |
| return signPrefix + numBytes.toFixed(1) + ' ' + UNIT_PREFIXES[i] + 'B'; |
| }; |
| |
| return { |
| SizeInBytes: SizeInBytes |
| }; |
| }); |
| </script> |
