import { PluggableList } from "unified" import { QuartzTransformerPlugin } from "../types" import { Root, HTML, BlockContent, DefinitionContent } from 'mdast' import { findAndReplace } from "mdast-util-find-and-replace" import { slugify } from "../../path" import rehypeRaw from "rehype-raw" import { visit } from "unist-util-visit" export interface Options { highlight: boolean wikilinks: boolean callouts: boolean } const defaultOptions: Options = { highlight: true, wikilinks: true, callouts: true } const icons = { infoIcon: ``, pencilIcon: ``, clipboardListIcon: ``, checkCircleIcon: ``, flameIcon: ``, checkIcon: ``, helpCircleIcon: ``, alertTriangleIcon: ``, xIcon: ``, zapIcon: ``, bugIcon: ``, listIcon: ``, quoteIcon: ``, } function canonicalizeCallout(calloutName: string): keyof typeof callouts { let callout = calloutName.toLowerCase() as keyof typeof calloutMapping const calloutMapping: Record = { note: "note", abstract: "abstract", info: "info", todo: "todo", tip: "tip", hint: "tip", important: "tip", success: "success", check: "success", done: "success", question: "question", help: "question", faq: "question", warning: "warning", attention: "warning", caution: "warning", failure: "failure", missing: "failure", fail: "failure", danger: "danger", error: "danger", bug: "bug", example: "example", quote: "quote", cite: "quote" } return calloutMapping[callout] } const callouts = { note: icons.pencilIcon, abstract: icons.clipboardListIcon, info: icons.infoIcon, todo: icons.checkCircleIcon, tip: icons.flameIcon, success: icons.checkIcon, question: icons.helpCircleIcon, warning: icons.alertTriangleIcon, failure: icons.xIcon, danger: icons.zapIcon, bug: icons.bugIcon, example: icons.listIcon, quote: icons.quoteIcon, } const capitalize = (s: string): string => { return s.substring(0, 1).toUpperCase() + s.substring(1); } export class ObsidianFlavoredMarkdown extends QuartzTransformerPlugin { name = "ObsidianFlavoredMarkdown" opts: Options constructor(opts?: Options) { super() this.opts = { ...defaultOptions, ...opts } } markdownPlugins(): PluggableList { const plugins: PluggableList = [] if (this.opts.wikilinks) { plugins.push(() => { // Match wikilinks // !? -> optional embedding // \[\[ -> open brace // ([^\[\]\|\#]+) -> one or more non-special characters ([,],|, or #) (name) // (#[^\[\]\|\#]+)? -> # then one or more non-special characters (heading link) // (|[^\[\]\|\#]+)? -> | then one or more non-special characters (alias) const backlinkRegex = new RegExp(/!?\[\[([^\[\]\|\#]+)(#[^\[\]\|\#]+)?(\|[^\[\]\|\#]+)?\]\]/, "g") return (tree: Root, _file) => { findAndReplace(tree, backlinkRegex, (value: string, ...capture: string[]) => { if (value.startsWith("!")) { // TODO: handle embeds } else { const [path, rawHeader, rawAlias] = capture const anchor = rawHeader?.trim() ?? "" const alias = rawAlias?.slice(1).trim() ?? path const url = slugify(path.trim() + anchor) return { type: 'link', url, children: [{ type: 'text', value: alias }] } } }) } } ) } if (this.opts.highlight) { plugins.push(() => { // Match highlights const highlightRegex = new RegExp(/==(.+)==/, "g") return (tree: Root, _file) => { findAndReplace(tree, highlightRegex, (_value: string, ...capture: string[]) => { const [inner] = capture return { type: 'html', value: `${inner}` } }) } }) } if (this.opts.callouts) { plugins.push(() => { // from https://github.com/escwxyz/remark-obsidian-callout/blob/main/src/index.ts const calloutRegex = new RegExp(/^\[\!(\w+)\]([+-]?)/) return (tree: Root, _file) => { visit(tree, "blockquote", (node) => { if (node.children.length === 0) { return } // find first line const firstChild = node.children[0] if (firstChild.type !== "paragraph" || firstChild.children[0]?.type !== "text") { return } const text = firstChild.children[0].value const [firstLine, ...remainingLines] = text.split("\n") const remainingText = remainingLines.join("\n") const match = firstLine.match(calloutRegex) if (match && match.input) { const [calloutDirective, typeString, collapseChar] = match const calloutType = typeString.toLowerCase() as keyof typeof callouts const collapse = collapseChar === "+" || collapseChar === "-" const defaultState = collapseChar === "-" ? "collapsed" : "expanded" const title = match.input.slice(calloutDirective.length).trim() || capitalize(calloutType) const titleNode: HTML = { type: "html", value: `
${callouts[canonicalizeCallout(calloutType)]}
${title}
` } const blockquoteContent: (BlockContent | DefinitionContent)[] = [titleNode] if (remainingText.length > 0) { blockquoteContent.push({ type: 'paragraph', children: [{ type: 'text', value: remainingText, }] }) } // replace first line of blockquote with title and rest of the paragraph text node.children.splice(0, 1, ...blockquoteContent) // add properties to base blockquote node.data = { hProperties: { ...(node.data?.hProperties ?? {}), className: `callout ${collapse ? "is-collapsible" : ""} ${defaultState === "collapsed" ? "is-collapsed" : ""}`, "data-callout": calloutType, "data-callout-fold": collapse, } } } }) } }) } return plugins } htmlPlugins(): PluggableList { return [rehypeRaw] } }