Simpler code for content enhancement

Also fixed some shortcodes not converted
This commit is contained in:
Lim Chee Aun 2022-12-13 20:15:02 +08:00
parent 19074844be
commit 3e80ee03f3
3 changed files with 69 additions and 80 deletions

View file

@ -475,7 +475,6 @@ a.card:hover {
margin: 8px 0;
overflow: auto;
width: 100%;
font-size: 90%;
border: 1px solid var(--outline-color);
background: linear-gradient(
to bottom right,
@ -484,6 +483,10 @@ a.card:hover {
);
}
.status .content p code {
color: var(--green-color);
}
/* MISC */
.status-aside {

View file

@ -36,7 +36,7 @@
:root {
--blue-color: CornflowerBlue;
--purple-color: mediumpurple;
--green-color: MediumSeaGreen;
--green-color: limegreen;
--bg-color: #242526;
--bg-faded-color: #18191a;
--bg-blur-color: #0009;
@ -187,6 +187,13 @@ select.plain {
background-color: transparent;
}
pre code,
code {
font-size: 95%;
font-family: 'SFMono-Regular', Consolas, 'Liberation Mono', Menlo, Courier,
monospace;
}
@media (prefers-color-scheme: dark) {
img,
video {

View file

@ -1,97 +1,61 @@
import emojifyText from './emojify-text';
const fauxDiv = document.createElement('div');
export default (content, opts = {}) => {
const { emojis, postEnhanceDOM = () => {} } = opts;
let enhancedContent = content;
const dom = document.createElement('div');
dom.innerHTML = enhancedContent;
// 1. Emojis
if (emojis) {
enhancedContent = emojifyText(enhancedContent, emojis);
}
// 2. Add target="_blank" to all links with no target="_blank"
// Add target="_blank" to all links with no target="_blank"
// E.g. `note` in `account`
const links = Array.from(dom.querySelectorAll('a:not([target="_blank"])'));
links.forEach((link) => {
link.setAttribute('target', '_blank');
});
// 3. Code blocks
// Check for <p> with markdown-like content "```"
{
const blocks = Array.from(dom.querySelectorAll('p')).filter((p) =>
/^```[^]+```$/g.test(p.innerText.trim()),
);
blocks.forEach((block) => {
const pre = document.createElement('pre');
const code = document.createElement('code');
const breaks = block.querySelectorAll('br');
breaks.forEach((br) => br.replaceWith('\n'));
code.innerHTML = block.innerText
.trim()
// .replace(/^```/g, '')
// .replace(/```$/g, '')
.replace(/^[\n\r]+/, '');
pre.appendChild(code);
block.replaceWith(pre);
});
}
// EMOJIS
// ======
// Convert :shortcode: to <img />
let textNodes = extractTextNodes(dom);
textNodes.forEach((node) => {
let html = node.nodeValue;
if (emojis) {
html = emojifyText(html, emojis);
}
fauxDiv.innerHTML = html;
const nodes = Array.from(fauxDiv.childNodes);
node.replaceWith(...nodes);
});
// 4. Inline code
{
// Get all text nodes in the DOM
const textNodes = [];
const walk = document.createTreeWalker(
dom,
NodeFilter.SHOW_TEXT,
null,
false,
);
let node;
while ((node = walk.nextNode())) {
// Only get text that contains markdown-like code syntax
if (/`[^]+`/g.test(node.nodeValue)) {
textNodes.push(node);
}
// INLINE CODE
// ===========
// Convert `code` to <code>code</code>
textNodes = extractTextNodes(dom);
textNodes.forEach((node) => {
let html = node.nodeValue;
if (/`[^`]+`/g.test(html)) {
html = html.replaceAll(/(`[^]+?`)/g, '<code>$1</code>');
}
if (textNodes.length) {
// - Split text nodes into array of text and DOM nodes
// - Replace markdown-like code syntax with <code> element
// - Apply them all back to parent node
textNodes.forEach((node) => {
const parent = node.parentNode;
const text = node.nodeValue;
const nodes = [];
let i = 0;
let j = 0;
let k = 0;
while ((i = text.indexOf('`', j)) !== -1) {
if (i > j) {
nodes.push(document.createTextNode(text.substring(j, i)));
}
j = i + 1;
if ((k = text.indexOf('`', j)) === -1) {
k = j;
}
if (j < k) {
const code = document.createElement('code');
code.appendChild(document.createTextNode(text.substring(j, k)));
nodes.push(document.createTextNode('`'));
nodes.push(code);
nodes.push(document.createTextNode('`'));
}
j = k + 1;
}
if (j < text.length) {
nodes.push(document.createTextNode(text.substring(j)));
}
nodes.forEach((n) => parent.insertBefore(n, node));
parent.removeChild(node);
});
}
}
fauxDiv.innerHTML = html;
const nodes = Array.from(fauxDiv.childNodes);
node.replaceWith(...nodes);
});
// CODE BLOCKS
// ===========
// Convert ```code``` to <pre><code>code</code></pre>
const blocks = Array.from(dom.querySelectorAll('p')).filter((p) =>
/^```[^]+```$/g.test(p.innerText.trim()),
);
blocks.forEach((block) => {
const pre = document.createElement('pre');
// Replace <br /> with newlines
block.querySelectorAll('br').forEach((br) => br.replaceWith('\n'));
pre.innerHTML = `<code>${block.innerText.trim()}</code>`;
block.replaceWith(pre);
});
if (postEnhanceDOM) {
postEnhanceDOM(dom); // mutate dom
@ -101,3 +65,18 @@ export default (content, opts = {}) => {
return enhancedContent;
};
function extractTextNodes(dom) {
const textNodes = [];
const walk = document.createTreeWalker(
dom,
NodeFilter.SHOW_TEXT,
null,
false,
);
let node;
while ((node = walk.nextNode())) {
textNodes.push(node);
}
return textNodes;
}