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silverbullet/plugs/index/anchor.ts
2023-11-02 16:19:33 +01:00

55 lines
1.6 KiB
TypeScript

import { collectNodesOfType } from "$sb/lib/tree.ts";
import type { CompleteEvent, IndexTreeEvent } from "$sb/app_event.ts";
import { removeQueries } from "$sb/lib/query.ts";
import { ObjectValue, QueryExpression } from "$sb/types.ts";
import { indexObjects, queryObjects } from "./api.ts";
type AnchorObject = ObjectValue<{
name: string;
page: string;
pos: number;
}>;
export async function indexAnchors({ name: pageName, tree }: IndexTreeEvent) {
removeQueries(tree);
const anchors: ObjectValue<AnchorObject>[] = [];
collectNodesOfType(tree, "NamedAnchor").forEach((n) => {
const aName = n.children![0].text!.substring(1);
anchors.push({
ref: `${pageName}@${aName}`,
tags: ["anchor"],
name: aName,
page: pageName,
pos: n.from!,
});
});
// console.log("Found", anchors.length, "anchors(s)");
await indexObjects(pageName, anchors);
}
export async function anchorComplete(completeEvent: CompleteEvent) {
const match = /\[\[([^\]@:]*@[\w\.\-\/]*)$/.exec(completeEvent.linePrefix);
if (!match) {
return null;
}
const pageRef = match[1].split("@")[0];
let filter: QueryExpression | undefined = ["=", ["attr", "page"], [
"string",
pageRef,
]];
if (!pageRef) {
// "bare" anchor, match any page for completion purposes
filter = undefined;
}
const allAnchors = await queryObjects<AnchorObject>("anchor", { filter });
return {
from: completeEvent.pos - match[1].length,
options: allAnchors.map((a) => ({
label: a.page === completeEvent.pageName ? `@${a.name}` : a.ref,
type: "anchor",
})),
};
}