Zef Hemel
05d3ba9333
Paragraphs, list items, tasks, headers, and fenced-data blocks now adopt the anchor name as the host's `ref` field when present. For fenced-data blocks the anchor comes from a YAML field named `$ref:` (the markdown anchor syntax doesn't apply inside YAML).
105 lines
2.7 KiB
TypeScript
105 lines
2.7 KiB
TypeScript
import {
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cloneTree,
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collectNodesMatching,
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type ParseTree,
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renderToText,
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} from "@silverbulletmd/silverbullet/lib/tree";
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import {
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getNameFromPath,
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parseToRef,
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} from "@silverbulletmd/silverbullet/lib/ref";
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import { index, lua } from "@silverbulletmd/silverbullet/syscalls";
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import type {
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ObjectValue,
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PageMeta,
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} from "@silverbulletmd/silverbullet/type/index";
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import type { CompleteEvent } from "@silverbulletmd/silverbullet/type/client";
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import type { FrontMatter } from "./frontmatter.ts";
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import { cleanAttributes, collectAttributes } from "./attribute.ts";
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import { cleanTags, collectTags } from "./tags.ts";
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import { cleanAnchor, collectAnchor } from "./anchor.ts";
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type HeaderObject = ObjectValue<
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{
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name: string;
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text: string;
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page: string;
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level: number;
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pos: number;
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} & Record<string, any>
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>;
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export function indexHeaders(
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pageMeta: PageMeta,
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_frontmatter: FrontMatter,
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tree: ParseTree,
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): Promise<HeaderObject[]> {
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const headers: ObjectValue<HeaderObject>[] = [];
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for (const n of collectNodesMatching(
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tree,
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(t) => !!t.type?.startsWith("ATXHeading"),
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)) {
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const level = +n.type!.substring("ATXHeading".length);
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const tags = collectTags(n);
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const anchor = collectAnchor(n);
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const attributes = collectAttributes(n);
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const nClone = cloneTree(n);
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cleanTags(nClone);
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cleanAttributes(nClone);
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cleanAnchor(nClone); // strip $anchor token from clone
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// Compute name from the cleaned tree so $anchor is stripped from both name and text.
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const name = renderToText(nClone).slice(level + 1);
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const text = name;
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headers.push({
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// First anchor wins; T12 lint flags duplicates.
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ref: anchor ? anchor.name : `${pageMeta.name}@${n.from}`,
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tag: "header",
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tags: [...tags],
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level,
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name,
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text,
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page: pageMeta.name,
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pos: n.from!,
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range: [n.from!, n.to!],
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...attributes,
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});
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}
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return Promise.resolve(headers);
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}
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export async function headerComplete(completeEvent: CompleteEvent) {
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const match = /(?:\[\[|\[.*?\]\()(?<path>[^[]*)$/.exec(
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completeEvent.linePrefix,
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);
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if (!match || !match.groups?.path) {
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return;
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}
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const ref = parseToRef(match.groups.path);
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if (!ref || ref.details?.type !== "header") {
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return;
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}
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const headers = await index.queryLuaObjects<HeaderObject>(
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"header",
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{
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objectVariable: "_",
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where: await lua.parseExpression(`_.page == name`),
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},
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{ name: getNameFromPath(ref.path) || completeEvent.pageName },
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);
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return {
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from: completeEvent.pos - match.groups.path.length,
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options: headers.map((header) => ({
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label: `${
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(ref.meta ? "^" : "") + getNameFromPath(ref.path)
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}#${header.name}`,
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type: "header",
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})),
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};
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}
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