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feat: extracts the rss excerpt utility to use it for og:description on post pages

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This commit is contained in:
Lewis Wynne 2026-03-26 22:02:40 +00:00
parent 331d843f68
commit 0029274484
3 changed files with 16 additions and 14 deletions
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12
www/src/lib/format.ts
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@ -7,6 +7,18 @@ export function escapeHtml(str: string): string {
.replace(/'/g, '''); .replace(/'/g, ''');
} }
export function excerpt(markdown: string | undefined, maxLen = 160): string {
if (!markdown) return '';
return markdown
.replace(/^#+\s+.*$/gm, '')
.replace(/!?\[([^\]]*)\]\([^)]*\)/g, '$1')
.replace(/[*_~`]/g, '')
.replace(/:[a-z]+\[([^\]]*)\]/g, '$1')
.replace(/\n+/g, ' ')
.trim()
.slice(0, maxLen);
}
export function formatDate(date: Date): string { export function formatDate(date: Date): string {
const d = String(date.getDate()).padStart(2, '0'); const d = String(date.getDate()).padStart(2, '0');
const m = String(date.getMonth() + 1).padStart(2, '0'); const m = String(date.getMonth() + 1).padStart(2, '0');

5
www/src/pages/[slug].astro
View file

@ -1,7 +1,7 @@
--- ---
import { getCollection, render } from 'astro:content'; import { getCollection, render } from 'astro:content';
import Layout from '../layouts/Layout.astro'; import Layout from '../layouts/Layout.astro';
import { formatDate, formatListItem } from '../lib/format'; import { formatDate, formatListItem, excerpt } from '../lib/format';
import { getSlug, enrichPostWithDates, enrichPostsWithDates, resolveRelatedPosts } from '../lib/md'; import { getSlug, enrichPostWithDates, enrichPostsWithDates, resolveRelatedPosts } from '../lib/md';
export async function getStaticPaths() { export async function getStaticPaths() {
@ -16,8 +16,9 @@ export async function getStaticPaths() {
const { post, allPosts } = Astro.props; const { post, allPosts } = Astro.props;
const { Content } = await render(post); const { Content } = await render(post);
const related = post.data.related ? resolveRelatedPosts(post.data.related, allPosts) : []; const related = post.data.related ? resolveRelatedPosts(post.data.related, allPosts) : [];
const description = excerpt((post as any).body) || undefined;
--- ---
<Layout title={`${post.data.title} - lewis m.w.`}> <Layout title={`${post.data.title} - lewis m.w.`} description={description}>
<article> <article>
<h1>{post.data.title}</h1> <h1>{post.data.title}</h1>

13
www/src/pages/feed.xml.ts
View file

@ -3,18 +3,7 @@ import { getCollection } from 'astro:content';
import type { APIContext } from 'astro'; import type { APIContext } from 'astro';
import { getSlug, enrichPostsWithDates } from '../lib/md'; import { getSlug, enrichPostsWithDates } from '../lib/md';
import { getTxtFiles } from '../lib/txt'; import { getTxtFiles } from '../lib/txt';
import { excerpt } from '../lib/format';
function excerpt(markdown: string | undefined, maxLen = 160): string {
if (!markdown) return '';
return markdown
.replace(/^#+\s+.*$/gm, '')
.replace(/!?\[([^\]]*)\]\([^)]*\)/g, '$1')
.replace(/[*_~`]/g, '')
.replace(/:[a-z]+\[([^\]]*)\]/g, '$1')
.replace(/\n+/g, ' ')
.trim()
.slice(0, maxLen);
}
export async function GET(context: APIContext) { export async function GET(context: APIContext) {
const rawPosts = await getCollection('md'); const rawPosts = await getCollection('md');