52 lines
1.9 KiB
JavaScript
52 lines
1.9 KiB
JavaScript
/*
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* @copyright 2019 Christoph Wurst <christoph@winzerhof-wurst.at>
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*
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* @author 2019 Christoph Wurst <christoph@winzerhof-wurst.at>
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*
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* @license GNU AGPL version 3 or any later version
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*
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* This program is free software: you can redistribute it and/or modify
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* it under the terms of the GNU Affero General Public License as
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* published by the Free Software Foundation, either version 3 of the
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* License, or (at your option) any later version.
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*
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* This program is distributed in the hope that it will be useful,
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* but WITHOUT ANY WARRANTY; without even the implied warranty of
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* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
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* GNU Affero General Public License for more details.
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*
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* You should have received a copy of the GNU Affero General Public License
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* along with this program. If not, see <http://www.gnu.org/licenses/>.
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*/
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/**
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* Returns a human readable file size
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* @param {number} size Size in bytes
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* @param {boolean} skipSmallSizes return '< 1 kB' for small files
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* @returns {string}
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*/
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export default function humanFileSize(size, skipSmallSizes) {
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const humanList = ['B', 'KB', 'MB', 'GB', 'TB']
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// Calculate Log with base 1024: size = 1024 ** order
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let order = size > 0 ? Math.floor(Math.log(size) / Math.log(1024)) : 0
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// Stay in range of the byte sizes that are defined
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order = Math.min(humanList.length - 1, order)
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const readableFormat = humanList[order]
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let relativeSize = (size / Math.pow(1024, order)).toFixed(1)
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if (skipSmallSizes === true && order === 0) {
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if (relativeSize !== '0.0') {
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return '< 1 KB'
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} else {
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return '0 KB'
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}
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}
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if (order < 2) {
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relativeSize = parseFloat(relativeSize).toFixed(0)
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} else if (relativeSize.substr(relativeSize.length - 2, 2) === '.0') {
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relativeSize = relativeSize.substr(0, relativeSize.length - 2)
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} else {
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relativeSize = parseFloat(relativeSize).toLocaleString(OC.getCanonicalLocale())
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}
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return relativeSize + ' ' + readableFormat
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}
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