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import {encode, decode} from 'uint8-to-base64';
// transform /path/to/file.ext to file.ext
export function basename(path = '') {
const lastSlashIndex = path.lastIndexOf('/');
return lastSlashIndex < 0 ? path : path.substring(lastSlashIndex + 1);
}
// transform /path/to/file.ext to .ext
export function extname(path = '') {
const lastPointIndex = path.lastIndexOf('.');
return lastPointIndex < 0 ? '' : path.substring(lastPointIndex);
}
// test whether a variable is an object
export function isObject(obj) {
return Object.prototype.toString.call(obj) === '[object Object]';
}
// returns whether a dark theme is enabled
export function isDarkTheme() {
const style = window.getComputedStyle(document.documentElement);
return style.getPropertyValue('--is-dark-theme').trim().toLowerCase() === 'true';
}
// strip <tags> from a string
export function stripTags(text) {
return text.replace(/<[^>]*>?/g, '');
}
export function parseIssueHref(href) {
const path = (href || '').replace(/[#?].*$/, '');
const [_, owner, repo, type, index] = /([^/]+)\/([^/]+)\/(issues|pulls)\/([0-9]+)/.exec(path) || [];
return {owner, repo, type, index};
}
// parse a URL, either relative '/path' or absolute 'https://localhost/path'
export function parseUrl(str) {
return new URL(str, str.startsWith('http') ? undefined : window.location.origin);
}
// return current locale chosen by user
export function getCurrentLocale() {
return document.documentElement.lang;
}
// given a month (0-11), returns it in the documents language
export function translateMonth(month) {
return new Date(Date.UTC(2022, month, 12)).toLocaleString(getCurrentLocale(), {month: 'short', timeZone: 'UTC'});
}
// given a weekday (0-6, Sunday to Saturday), returns it in the documents language
export function translateDay(day) {
return new Date(Date.UTC(2022, 7, day)).toLocaleString(getCurrentLocale(), {weekday: 'short', timeZone: 'UTC'});
}
// convert a Blob to a DataURI
export function blobToDataURI(blob) {
return new Promise((resolve, reject) => {
try {
const reader = new FileReader();
reader.addEventListener('load', (e) => {
resolve(e.target.result);
});
reader.addEventListener('error', () => {
reject(new Error('FileReader failed'));
});
reader.readAsDataURL(blob);
} catch (err) {
reject(err);
}
});
}
// convert image Blob to another mime-type format.
export function convertImage(blob, mime) {
return new Promise(async (resolve, reject) => {
try {
const img = new Image();
const canvas = document.createElement('canvas');
img.addEventListener('load', () => {
try {
canvas.width = img.naturalWidth;
canvas.height = img.naturalHeight;
const context = canvas.getContext('2d');
context.drawImage(img, 0, 0);
canvas.toBlob((blob) => {
if (!(blob instanceof Blob)) return reject(new Error('imageBlobToPng failed'));
resolve(blob);
}, mime);
} catch (err) {
reject(err);
}
});
img.addEventListener('error', () => {
reject(new Error('imageBlobToPng failed'));
});
img.src = await blobToDataURI(blob);
} catch (err) {
reject(err);
}
});
}
export function toAbsoluteUrl(url) {
if (url.startsWith('http://') || url.startsWith('https://')) {
return url;
}
if (url.startsWith('//')) {
return `${window.location.protocol}${url}`; // it's also a somewhat absolute URL (with the current scheme)
}
if (url && !url.startsWith('/')) {
throw new Error('unsupported url, it should either start with / or http(s)://');
}
return `${window.location.origin}${url}`;
}
// Encode an ArrayBuffer into a URLEncoded base64 string.
export function encodeURLEncodedBase64(arrayBuffer) {
return encode(arrayBuffer)
.replace(/\+/g, '-')
.replace(/\//g, '_')
.replace(/=/g, '');
}
// Decode a URLEncoded base64 to an ArrayBuffer string.
export function decodeURLEncodedBase64(base64url) {
return decode(base64url
.replace(/_/g, '/')
.replace(/-/g, '+'));
}
const domParser = new DOMParser();
const xmlSerializer = new XMLSerializer();
export function parseDom(text, contentType) {
return domParser.parseFromString(text, contentType);
}
export function serializeXml(node) {
return xmlSerializer.serializeToString(node);
}
export const sleep = (ms) => new Promise((resolve) => setTimeout(resolve, ms));
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