54 lines
1.4 KiB
TypeScript
54 lines
1.4 KiB
TypeScript
import { findNodeOfType, traverseTree } from "../../common/tree.ts";
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import { parseMarkdown } from "../../syscall/silverbullet-syscall/markdown.ts";
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import {
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readPage,
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writePage,
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} from "../../syscall/silverbullet-syscall/space.ts";
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import * as YAML from "yaml";
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export async function readYamlPage(
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pageName: string,
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allowedLanguages = ["yaml"],
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): Promise<any> {
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const { text } = await readPage(pageName);
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let tree = await parseMarkdown(text);
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let data: any = {};
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traverseTree(tree, (t): boolean => {
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// Find a fenced code block
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if (t.type !== "FencedCode") {
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return false;
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}
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let codeInfoNode = findNodeOfType(t, "CodeInfo");
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if (!codeInfoNode) {
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return false;
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}
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if (!allowedLanguages.includes(codeInfoNode.children![0].text!)) {
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return false;
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}
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let codeTextNode = findNodeOfType(t, "CodeText");
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if (!codeTextNode) {
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// Honestly, this shouldn't happen
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return false;
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}
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let codeText = codeTextNode.children![0].text!;
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try {
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data = YAML.parse(codeText);
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} catch (e: any) {
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console.error("YAML Page parser error", e);
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throw new Error(`YAML Error: ${e.message}`);
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}
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return true;
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});
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return data;
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}
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export async function writeYamlPage(
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pageName: string,
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data: any,
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): Promise<void> {
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const text = YAML.stringify(data);
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await writePage(pageName, "```yaml\n" + text + "\n```");
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}
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