85 lines
3.0 KiB
TypeScript
85 lines
3.0 KiB
TypeScript
import { editor, markdown, system } from "$sb/silverbullet-syscall/mod.ts";
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import { nodeAtPos } from "$sb/lib/tree.ts";
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import { replaceAsync } from "$sb/lib/util.ts";
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import { directiveRegex, renderDirectives } from "./directives.ts";
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import { extractMeta } from "./data.ts";
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export async function updateDirectivesOnPageCommand() {
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const pageName = await editor.getCurrentPage();
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const text = await editor.getText();
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const tree = await markdown.parseMarkdown(text);
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const metaData = extractMeta(tree, ["$disableDirectives"]);
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if (metaData.$disableDirectives) {
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// Not updating, directives disabled
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return;
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}
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// Collect all directives and their body replacements
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const replacements: { startInst: string; text?: string }[] = [];
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await replaceAsync(
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text,
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directiveRegex,
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async (fullMatch, startInst, _type, _arg, _body, endInst, index) => {
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const replacement: { startInst: string; text?: string } = { startInst };
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// Pushing to the replacement array
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replacements.push(replacement);
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const currentNode = nodeAtPos(tree, index + 1);
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if (currentNode?.type !== "CommentBlock") {
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// If not a comment block, it's likely a code block, ignore
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// console.log("Not comment block, ingoring", fullMatch);
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return fullMatch;
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}
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try {
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const replacementText = await system.invokeFunction(
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"server",
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"serverRenderDirective",
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pageName,
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fullMatch,
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);
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replacement.text = replacementText;
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return replacementText;
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} catch (e: any) {
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return `${startInst}\n**ERROR:** ${e.message}\n${endInst}`;
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}
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},
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);
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let counter = 0;
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// Iterate again and replace the bodies. Iterating again (not using previous positions)
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// because text may have changed in the mean time (directive processing may take some time)
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// Hypothetically in the mean time directives in text may have been changed/swapped, in which
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// case this will break. This would be a rare edge case, however.
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await replaceAsync(
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text,
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directiveRegex,
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async (fullMatch, startInst, _type, _arg, _body, endInst, index) => {
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const replacement = replacements[counter++];
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if (!replacement.text) {
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return `${startInst}\n$**ERROR:** Internal error, no replacement found\n${endInst}`;
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}
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if (replacement.text === fullMatch) {
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// No change, no need to dispatch
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return fullMatch;
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}
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// Dispatch the change as a somewhat minimal diff in order not to interfere with current editing
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await editor.dispatch({
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changes: {
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from: index,
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to: index + fullMatch.length,
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insert: replacement.text,
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},
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});
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return replacement.text;
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},
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);
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}
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// Called from client, running on server
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// The text passed here is going to be a single directive block (not a full page)
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export function serverRenderDirective(
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pageName: string,
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text: string,
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): Promise<string> {
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return renderDirectives(pageName, text);
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}
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