49 lines
1.3 KiB
TypeScript
49 lines
1.3 KiB
TypeScript
import { Fragment } from 'react'
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import { SiteLink } from './site-link'
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// Return a JSX span, linkifying @username, #hashtags, and https://...
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// TODO: Use a markdown parser instead of rolling our own here.
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export function Linkify(props: { text: string; gray?: boolean }) {
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const { text, gray } = props
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const regex =
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/(?:^|\s)(?:[@#][a-z0-9_]+|https?:\/\/[-A-Za-z0-9+&@#\/%?=~_()|!:,.;]*[-A-Za-z0-9+&@#\/%=~_|])/gi
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const matches = text.match(regex) || []
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const links = matches.map((match) => {
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// Matches are in the form: " @username" or "https://example.com"
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const whitespace = match.match(/^\s/)
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const symbol = match.trim().substring(0, 1)
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const tag = match.trim().substring(1)
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const href =
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{
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'@': `/${tag}`,
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'#': `/tag/${tag}`,
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}[symbol] ?? match.trim()
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return (
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<>
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{whitespace}
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<SiteLink
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className={gray ? 'text-gray-500' : 'text-indigo-700'}
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href={href}
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>
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{symbol}
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{tag}
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</SiteLink>
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</>
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)
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})
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return (
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<span
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className="break-words"
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style={{ /* For iOS safari */ wordBreak: 'break-word' }}
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>
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{text.split(regex).map((part, i) => (
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<Fragment key={i}>
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{part}
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{links[i]}
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</Fragment>
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))}
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</span>
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)
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}
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