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silverbullet/plugs/markdown/util.ts

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import {
findNodeOfType,
renderToText,
replaceNodesMatching,
} from "../../common/tree.ts";
import { parseMarkdown } from "../../syscall/silverbullet-syscall/markdown.ts";
export function encodePageUrl(name: string): string {
return name.replaceAll(" ", "_");
}
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export async function cleanMarkdown(
text: string,
validPages?: string[],
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): Promise<string> {
const mdTree = await parseMarkdown(text);
replaceNodesMatching(mdTree, (n) => {
if (n.type === "WikiLink") {
const page = n.children![1].children![0].text!;
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if (validPages && !validPages.includes(page)) {
return {
// HACK
text: `_${page}_`,
};
}
return {
// HACK
text: `[${page}](/${encodePageUrl(page)})`,
};
}
// Simply get rid of these
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if (
n.type === "CommentBlock" ||
n.type === "Comment" ||
n.type === "NamedAnchor"
) {
return null;
}
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if (n.type === "Hashtag") {
return {
text: `__${n.children![0].text}__`,
};
}
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if (n.type === "URL") {
const url = n.children![0].text!;
if (url.indexOf("://") === -1) {
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n.children![0].text = `fs/${url}`;
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}
console.log("Link", url);
}
if (n.type === "FencedCode") {
const codeInfoNode = findNodeOfType(n, "CodeInfo");
if (!codeInfoNode) {
return;
}
if (codeInfoNode.children![0].text === "meta") {
return null;
}
}
});
return renderToText(mdTree);
}