forked from akai/readest
Huang Xin
78 lines
2.5 KiB
TypeScript
78 lines
2.5 KiB
TypeScript
import { md5 } from 'js-md5';
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export const uniqueId = () => Math.random().toString(36).substring(2, 9);
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export const randomMd5 = () => md5(Math.random().toString());
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export const getContentMd5 = (content: unknown) => md5(JSON.stringify(content));
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export const makeSafeFilename = (filename: string, replacement = '_') => {
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// Windows restricted characters + control characters and reserved names
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const unsafeCharacters = /[<>:"\/\\|?*\x00-\x1F]/g;
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const reservedFilenames = /^(con|prn|aux|nul|com[1-9]|lpt[1-9])$/i;
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// Unsafe to use filename including file extensions over 255 bytes on Android
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const maxFilenameBytes = 250;
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let safeName = filename.replace(unsafeCharacters, replacement);
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if (reservedFilenames.test(safeName)) {
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safeName = `${safeName}${replacement}`;
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}
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const encoder = new TextEncoder();
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let utf8Bytes = encoder.encode(safeName);
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while (utf8Bytes.length > maxFilenameBytes) {
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safeName = safeName.slice(0, -1);
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utf8Bytes = encoder.encode(safeName);
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}
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return safeName.trim();
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};
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export const getUserLang = () => navigator?.language.split('-')[0] || 'en';
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export const isCJKEnv = () => ['zh', 'ja', 'ko'].includes(getUserLang());
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export const getUserLocale = (lang: string): string | undefined => {
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const languages =
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navigator.languages && navigator.languages.length > 0
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? navigator.languages
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: [navigator.language];
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const filteredLocales = languages.filter((locale) => locale.startsWith(lang));
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return filteredLocales.length > 0 ? filteredLocales[0] : undefined;
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};
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// Note that iPad may have a user agent string like a desktop browser
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// when possible please use appService.isIOSApp || getOSPlatform() === 'ios'
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// to check if the app is running on iOS
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export const getOSPlatform = () => {
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const userAgent = navigator.userAgent.toLowerCase();
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if (/iphone|ipad|ipod/.test(userAgent)) return 'ios';
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if (userAgent.includes('android')) return 'android';
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if (userAgent.includes('macintosh') || userAgent.includes('mac os x')) return 'macos';
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if (userAgent.includes('windows nt')) return 'windows';
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if (userAgent.includes('linux')) return 'linux';
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return '';
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};
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export const isContentURI = (uri: string) => {
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return uri.startsWith('content://');
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};
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export const isValidURL = (url: string, allowedSchemes: string[] = ['http', 'https']) => {
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try {
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const { protocol } = new URL(url);
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return allowedSchemes.some((scheme) => `${scheme}:` === protocol);
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} catch {
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return false;
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}
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};
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export const stubTranslation = (key: string) => {
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return key;
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};
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