81 lines
2.5 KiB
TypeScript
81 lines
2.5 KiB
TypeScript
import { nodeAtPos, ParseTree, renderToText } from "$sb/lib/tree.ts";
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import { replaceAsync } from "$sb/lib/util.ts";
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import { markdown } from "$sb/silverbullet-syscall/mod.ts";
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import { evalDirectiveRenderer } from "./eval_directive.ts";
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import { queryDirectiveRenderer } from "./query_directive.ts";
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import {
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cleanTemplateInstantiations,
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templateDirectiveRenderer,
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} from "./template_directive.ts";
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export const directiveStartRegex =
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/<!--\s*#(use|use-verbose|include|eval|query)\s+(.*?)-->/i;
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export const directiveRegex =
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/(<!--\s*#(use|use-verbose|include|eval|query)\s+(.*?)-->)(.+?)(<!--\s*\/\2\s*-->)/gs;
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/**
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* Looks for directives in the text dispatches them based on name
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*/
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export async function directiveDispatcher(
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pageName: string,
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directiveTree: ParseTree,
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directiveRenderers: Record<
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string,
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(
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directive: string,
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pageName: string,
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arg: string | ParseTree,
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) => Promise<string>
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>,
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): Promise<string> {
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const directiveStart = directiveTree.children![0]; // <!-- #directive -->
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const directiveEnd = directiveTree.children![2]; // <!-- /directive -->
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const directiveStartText = renderToText(directiveStart).trim();
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const directiveEndText = renderToText(directiveEnd).trim();
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if (directiveStart.children!.length === 1) {
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// Everything not #query
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const match = directiveStartRegex.exec(directiveStart.children![0].text!);
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if (!match) {
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throw Error("No match");
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}
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let [_fullMatch, type, arg] = match;
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try {
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arg = arg.trim();
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const newBody = await directiveRenderers[type](type, pageName, arg);
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const result =
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`${directiveStartText}\n${newBody.trim()}\n${directiveEndText}`;
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return result;
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} catch (e: any) {
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return `${directiveStartText}\n**ERROR:** ${e.message}\n${directiveEndText}`;
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}
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} else {
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// #query
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const newBody = await directiveRenderers["query"](
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"query",
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pageName,
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directiveStart.children![1], // The query ParseTree
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);
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const result =
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`${directiveStartText}\n${newBody.trim()}\n${directiveEndText}`;
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return result;
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}
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}
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export async function renderDirectives(
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pageName: string,
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directiveTree: ParseTree,
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): Promise<string> {
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const replacementText = await directiveDispatcher(pageName, directiveTree, {
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use: templateDirectiveRenderer,
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include: templateDirectiveRenderer,
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query: queryDirectiveRenderer,
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eval: evalDirectiveRenderer,
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});
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return cleanTemplateInstantiations(replacementText);
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}
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