chrome-devtools-frontend/front_end/platform/utilities.ts

Chrome DevTools UI

// Copyright 2020 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.

/*
 * Copyright (C) 2007 Apple Inc.  All rights reserved.
 * Copyright (C) 2012 Google Inc. All rights reserved.
 *
 * Redistribution and use in source and binary forms, with or without
 * modification, are permitted provided that the following conditions
 * are met:
 *
 * 1.  Redistributions of source code must retain the above copyright
 *     notice, this list of conditions and the following disclaimer.
 * 2.  Redistributions in binary form must reproduce the above copyright
 *     notice, this list of conditions and the following disclaimer in the
 *     documentation and/or other materials provided with the distribution.
 * 3.  Neither the name of Apple Computer, Inc. ("Apple") nor the names of
 *     its contributors may be used to endorse or promote products derived
 *     from this software without specific prior written permission.
 *
 * THIS SOFTWARE IS PROVIDED BY APPLE AND ITS CONTRIBUTORS "AS IS" AND ANY
 * EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE IMPLIED
 * WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE ARE
 * DISCLAIMED. IN NO EVENT SHALL APPLE OR ITS CONTRIBUTORS BE LIABLE FOR ANY
 * DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES
 * (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES;
 * LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND
 * ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT
 * (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE OF
 * THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
 */

/* The long term goal here is to remove all functions in this file and
 * replace them with ES Module functions rather than prototype
 * extensions but in the mean time if an old func in here depends on one
 * that has been migrated, it will need to be imported.
 */
/* eslint-disable rulesdir/no_underscored_properties */

import {caseInsensetiveComparator, regexSpecialCharacters, sprintf} from './string-utilities.js';

// Still used in the test runners that can't use ES modules :(
String.sprintf = sprintf;

// @ts-ignore https://crbug.com/1050549
String.regexSpecialCharacters = regexSpecialCharacters;
// @ts-ignore https://crbug.com/1050549
String.caseInsensetiveComparator = caseInsensetiveComparator;

self.createPlainTextSearchRegex = function(query: string, flags?: string): RegExp {
  // This should be kept the same as the one in StringUtil.cpp.
  let regex = '';
  for (let i = 0; i < query.length; ++i) {
    const c = query.charAt(i);
    if (regexSpecialCharacters().indexOf(c) !== -1) {
      regex += '\\';
    }
    regex += c;
  }
  return new RegExp(regex, flags || '');
};

export function runOnWindowLoad(callback: () => void): void {
  function windowLoaded(): void {
    window.removeEventListener('DOMContentLoaded', windowLoaded, false);
    callback();
  }

  if (document.readyState === 'complete' || document.readyState === 'interactive') {
    callback();
  } else {
    window.addEventListener('DOMContentLoaded', windowLoaded, false);
  }
}

export function assertNever(type: never, message: string): never {
  throw new Error(message);
}

self.base64ToSize = function(content: string|null): number {
  if (!content) {
    return 0;
  }
  let size = content.length * 3 / 4;
  if (content[content.length - 1] === '=') {
    size--;
  }
  if (content.length > 1 && content[content.length - 2] === '=') {
    size--;
  }
  return size;
};