50105fd044
* index plug: index paragraph nodes
Includes attributes and tags in the paragraphs.
Only considers top level paragraphs (right below Document node)
* keep ref and pos consistent with other objects
- most objects just store the starting position in the `pos` field.
- ref is usually `${page}@${pos}` so that it works as a link.
* cleanup and clarify comments
* add paragraph to builtins index
52 lines
1.5 KiB
TypeScript
52 lines
1.5 KiB
TypeScript
import type { IndexTreeEvent } from "$sb/app_event.ts";
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import { indexObjects } from "./api.ts";
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import { renderToText, traverseTree, traverseTreeAsync } from "$sb/lib/tree.ts";
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import { extractAttributes } from "$sb/lib/attribute.ts";
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/** ParagraphObject An index object for the top level text nodes */
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export type ParagraphObject = {
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ref: string;
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tags: string[];
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text: string;
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page: string;
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pos: number;
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} & Record<string, any>;
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export async function indexParagraphs({ name: page, tree }: IndexTreeEvent) {
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const objects: ParagraphObject[] = [];
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await traverseTreeAsync(tree, async (p) => {
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// only search directly under document
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// Paragraph nodes also appear under block elements
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if (p.type == "Document") return false; // continue traversal if p is Document
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if (p.type != "Paragraph") return true;
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const tags = new Set<string>(["paragraph"]);
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// tag the paragraph with any hashtags inside it
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traverseTree(p, (e) => {
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if (e.type == "Hashtag") {
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tags.add(e.children![0].text!.substring(1));
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return true;
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}
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return false;
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});
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const attrs = await extractAttributes(p, false);
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const pos = p.from!;
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objects.push({
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ref: `${page}@${pos}`,
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text: renderToText(p),
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tags: [...tags.values()],
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page,
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pos,
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...attrs,
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});
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// stop on every element except document, including paragraphs
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return true;
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});
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await indexObjects<ParagraphObject>(page, objects);
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}
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