c71b116c71
* RN-173 Added support for Markdown images * RN-173 Added proper alt text when image fails to load * Changed (edited) indicator not add itself as a child of an image * RN-173 Removed space between an image and the following text * Made sure MarkdownImage is mounted when setState is called * Fixed images in links having their location overwritten * Made images work in links * Fixed uppercase links not working on Android * Added vertical margin around images * RN-173 Added styling for markdown image error text * RN-173 Added error when image exceeds max dimensions on Android
58 lines
1.7 KiB
JavaScript
58 lines
1.7 KiB
JavaScript
// Copyright (c) 2017-present Mattermost, Inc. All Rights Reserved.
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// See License.txt for license information.
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const ytRegex = /(?:http|https):\/\/(?:www\.|m\.)?(?:(?:youtube\.com\/(?:(?:v\/)|(?:(?:watch|embed\/watch)(?:\/|.*v=))|(?:embed\/)|(?:user\/[^/]+\/u\/[0-9]\/)))|(?:youtu\.be\/))([^#&?]*)/;
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const imgRegex = /.+\/(.+\.(?:jpg|gif|bmp|png|jpeg))(?:\?.*)?$/i;
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export function isValidUrl(url = '') {
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const regex = /^https?:\/\//i;
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return regex.test(url);
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}
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export function stripTrailingSlashes(url = '') {
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return url.trim().replace(/\/+$/, '');
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}
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export function removeProtocol(url = '') {
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return url.replace(/(^\w+:|^)\/\//, '');
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}
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export function extractFirstLink(text) {
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const pattern = /(^|[\s\n]|<br\/?>)((?:https?|ftp):\/\/[-A-Z0-9+\u0026\u2019@#/%?=()~_|!:,.;]*[-A-Z0-9+\u0026@#/%=~()_|])/i;
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let inText = text;
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// strip out code blocks
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inText = inText.replace(/`[^`]*`/g, '');
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// strip out inline markdown images
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inText = inText.replace(/!\[[^\]]*]\([^)]*\)/g, '');
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const match = pattern.exec(inText);
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if (match) {
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return match[0].trim();
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}
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return '';
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}
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export function isYoutubeLink(link) {
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return link.trim().match(ytRegex);
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}
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export function isImageLink(link) {
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const match = link.trim().match(imgRegex);
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return Boolean(match && match[1]);
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}
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// Converts the protocol of a link (eg. http, ftp) to be lower case since
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// Android doesn't handle uppercase links.
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export function normalizeProtocol(url) {
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const index = url.indexOf(':');
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if (index === -1) {
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// There's no protocol on the link to be normalized
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return url;
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}
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const protocol = url.substring(0, index);
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return protocol.toLowerCase() + url.substring(index);
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}
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