wiki/quartz/plugins/emitters/aliases.ts

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import { FilePath, FullSlug, joinSegments, resolveRelative, simplifySlug } from "../../util/path"
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import { QuartzEmitterPlugin } from "../types"
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import path from "path"
import { write } from "./helpers"
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export const AliasRedirects: QuartzEmitterPlugin = () => ({
name: "AliasRedirects",
getQuartzComponents() {
return []
},
async emit(ctx, content, _resources): Promise<FilePath[]> {
const { argv } = ctx
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const fps: FilePath[] = []
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for (const [_tree, file] of content) {
const ogSlug = simplifySlug(file.data.slug!)
const dir = path.posix.relative(argv.directory, path.dirname(file.data.filePath!))
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let aliases: FullSlug[] = file.data.frontmatter?.aliases ?? file.data.frontmatter?.alias ?? []
if (typeof aliases === "string") {
aliases = [aliases]
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}
const slugs: FullSlug[] = aliases.map((alias) => path.posix.join(dir, alias) as FullSlug)
const permalink = file.data.frontmatter?.permalink
if (typeof permalink === "string") {
slugs.push(permalink as FullSlug)
}
for (let slug of slugs) {
// fix any slugs that have trailing slash
if (slug.endsWith("/")) {
slug = joinSegments(slug, "index") as FullSlug
}
const redirUrl = resolveRelative(slug, file.data.slug!)
const fp = await write({
ctx,
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content: `
<!DOCTYPE html>
<html lang="en-us">
<head>
<title>${ogSlug}</title>
<link rel="canonical" href="${redirUrl}">
<meta name="robots" content="noindex">
<meta charset="utf-8">
<meta http-equiv="refresh" content="0; url=${redirUrl}">
</head>
</html>
`,
slug,
ext: ".html",
})
fps.push(fp)
}
}
return fps
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},
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})