SCM-Manager/scm-ui/ui-components/src/FileSize.tsx

/*
 * MIT License
 *
 * Copyright (c) 2020-present Cloudogu GmbH and Contributors
 *
 * Permission is hereby granted, free of charge, to any person obtaining a copy
 * of this software and associated documentation files (the "Software"), to deal
 * in the Software without restriction, including without limitation the rights
 * to use, copy, modify, merge, publish, distribute, sublicense, and/or sell
 * copies of the Software, and to permit persons to whom the Software is
 * furnished to do so, subject to the following conditions:
 *
 * The above copyright notice and this permission notice shall be included in all
 * copies or substantial portions of the Software.
 *
 * THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR
 * IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,
 * FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL THE
 * AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER
 * LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM,
 * OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN THE
 * SOFTWARE.
 */
import React from "react";

type Props = {
  bytes: number;
};

class FileSize extends React.Component<Props> {
  static format(bytes: number) {
    if (!bytes) {
      return "0 B";
    }

    const units = ["B", "K", "M", "G", "T", "P", "E", "Z", "Y"];
    const i = Math.floor(Math.log(bytes) / Math.log(1000));

    const size = i === 0 ? bytes : (bytes / 1000 ** i).toFixed(2);
    return `${size} ${units[i]}`;
  }

  render() {
    const formattedBytes = FileSize.format(this.props.bytes);
    return <span>{formattedBytes}</span>;
  }
}

export default FileSize;