122 lines
4.3 KiB
TypeScript
122 lines
4.3 KiB
TypeScript
import { QuartzTransformerPlugin } from "../types"
|
|
import {
|
|
CanonicalSlug,
|
|
RelativeURL,
|
|
canonicalizeServer,
|
|
joinSegments,
|
|
pathToRoot,
|
|
resolveRelative,
|
|
splitAnchor,
|
|
transformInternalLink,
|
|
} from "../../path"
|
|
import path from "path"
|
|
import { visit } from "unist-util-visit"
|
|
import isAbsoluteUrl from "is-absolute-url"
|
|
|
|
interface Options {
|
|
/** How to resolve Markdown paths */
|
|
markdownLinkResolution: "absolute" | "relative" | "shortest"
|
|
/** Strips folders from a link so that it looks nice */
|
|
prettyLinks: boolean
|
|
}
|
|
|
|
const defaultOptions: Options = {
|
|
markdownLinkResolution: "absolute",
|
|
prettyLinks: true,
|
|
}
|
|
|
|
export const CrawlLinks: QuartzTransformerPlugin<Partial<Options> | undefined> = (userOpts) => {
|
|
const opts = { ...defaultOptions, ...userOpts }
|
|
return {
|
|
name: "LinkProcessing",
|
|
htmlPlugins() {
|
|
return [
|
|
() => {
|
|
return (tree, file) => {
|
|
const curSlug = canonicalizeServer(file.data.slug!)
|
|
const transformLink = (target: string): RelativeURL => {
|
|
const targetSlug = transformInternalLink(target).slice("./".length)
|
|
let [targetCanonical, targetAnchor] = splitAnchor(targetSlug)
|
|
if (opts.markdownLinkResolution === "relative") {
|
|
return targetSlug as RelativeURL
|
|
} else if (opts.markdownLinkResolution === "shortest") {
|
|
// https://forum.obsidian.md/t/settings-new-link-format-what-is-shortest-path-when-possible/6748/5
|
|
const allSlugs = file.data.allSlugs!
|
|
|
|
// if the file name is unique, then it's just the filename
|
|
const matchingFileNames = allSlugs.filter((slug) => {
|
|
const parts = slug.split(path.posix.sep)
|
|
const fileName = parts.at(-1)
|
|
return targetCanonical === fileName
|
|
})
|
|
|
|
if (matchingFileNames.length === 1) {
|
|
const targetSlug = canonicalizeServer(matchingFileNames[0])
|
|
return (resolveRelative(curSlug, targetSlug) + targetAnchor) as RelativeURL
|
|
}
|
|
|
|
// if it's not unique, then it's the absolute path from the vault root
|
|
// (fall-through case)
|
|
}
|
|
|
|
// treat as absolute
|
|
return joinSegments(pathToRoot(curSlug), targetSlug) as RelativeURL
|
|
}
|
|
|
|
const outgoing: Set<CanonicalSlug> = new Set()
|
|
visit(tree, "element", (node, _index, _parent) => {
|
|
// rewrite all links
|
|
if (
|
|
node.tagName === "a" &&
|
|
node.properties &&
|
|
typeof node.properties.href === "string"
|
|
) {
|
|
let dest = node.properties.href as RelativeURL
|
|
node.properties.className = isAbsoluteUrl(dest) ? "external" : "internal"
|
|
|
|
// don't process external links or intra-document anchors
|
|
if (!(isAbsoluteUrl(dest) || dest.startsWith("#"))) {
|
|
dest = node.properties.href = transformLink(dest)
|
|
const canonicalDest = path.normalize(joinSegments(curSlug, dest))
|
|
const [destCanonical, _destAnchor] = splitAnchor(canonicalDest)
|
|
outgoing.add(destCanonical as CanonicalSlug)
|
|
}
|
|
|
|
// rewrite link internals if prettylinks is on
|
|
if (
|
|
opts.prettyLinks &&
|
|
node.children.length === 1 &&
|
|
node.children[0].type === "text"
|
|
) {
|
|
node.children[0].value = path.basename(node.children[0].value)
|
|
}
|
|
}
|
|
|
|
// transform all other resources that may use links
|
|
if (
|
|
["img", "video", "audio", "iframe"].includes(node.tagName) &&
|
|
node.properties &&
|
|
typeof node.properties.src === "string"
|
|
) {
|
|
if (!isAbsoluteUrl(node.properties.src)) {
|
|
const ext = path.extname(node.properties.src)
|
|
node.properties.src =
|
|
transformLink(path.join("assets", node.properties.src)) + ext
|
|
}
|
|
}
|
|
})
|
|
|
|
file.data.links = [...outgoing]
|
|
}
|
|
},
|
|
]
|
|
},
|
|
}
|
|
}
|
|
|
|
declare module "vfile" {
|
|
interface DataMap {
|
|
links: CanonicalSlug[]
|
|
}
|
|
}
|