Using hexo.render.renderSync, Tag Plugins are not resolved

[kristofzerbe]

Check List

• I have already read Docs page & Troubleshooting page
• I have already searched existing issues and they are not help to me
• I examined error or warning messages and it's difficult to solve
• Using the latest version of Hexo (run hexo version to check)
• Node.js is higher than minimum required version

Question

I have created a generator, which loads extra Markdown content while processing. Beside parsing the Frontmatter, it renders the content with renderSync:

...
const md = fs.readFileSync(mdSource);
data = front.parse(md);
data.content = hexo.render.renderSync({ text: data._content, engine: 'markdown' });
...

Works like charm ... but tag plugins contained in the content (which are working properly in pages/posts) are not resolved.

Code: https://github.com/kristofzerbe/hexo-generator-anything/blob/main/lib/generator.js

Environment & Settings

Node.js & npm version

Node: v12.16.3
NPM: 6.14.4

Hexo and Plugin version(npm ls --depth 0)

+-- hexo@5.4.0
+-- hexo-asset-link@2.1.0
+-- hexo-browsersync@0.3.0
+-- hexo-cli@4.2.0
+-- hexo-feed@1.1.0
+-- hexo-fontawesome@2.2.1
+-- hexo-front-matter@2.0.0
+-- hexo-fs@3.1.0
+-- hexo-generator-alias@1.0.0
+-- hexo-generator-anything@1.0.4
+-- hexo-generator-archive@1.0.0
+-- hexo-generator-category@1.0.0
+-- hexo-generator-copy@0.1.0
+-- hexo-generator-index@2.0.0
+-- hexo-generator-json-content@4.2.3
+-- hexo-generator-search@2.4.2
+-- hexo-generator-sitemap@2.1.0
+-- hexo-generator-tag@1.0.0
+-- hexo-hide-posts@0.1.1
+-- hexo-pwa@0.1.3
+-- hexo-renderer-ejs@1.0.0
+-- hexo-renderer-marked@4.0.0
+-- hexo-renderer-stylus@2.0.1
+-- hexo-server@2.0.0

Your package.json package.json

{
  "name": "hexo-site",
  "version": "0.0.0",
  "private": true,
  "hexo": {
    "version": "5.4.0"
  },
  "dependencies": {
    "hexo": "^5.4.0",
    "hexo-asset-link": "^2.1.0",
    "hexo-browsersync": "^0.3.0",
    "hexo-fontawesome": "^2.2.1",
    "hexo-generator-alias": "^1.0.0",
    "hexo-generator-anything": "^1.0.4",
    "hexo-generator-archive": "^1.0.0",
    "hexo-generator-category": "^1.0.0",
    "hexo-generator-copy": "^0.1.0",
    "hexo-generator-index": "^2.0.0",
    "hexo-generator-json-content": "^4.2.3",
    "hexo-generator-search": "^2.4.2",
    "hexo-generator-sitemap": "^2.1.0",
    "hexo-generator-tag": "^1.0.0",
    "hexo-hide-posts": "^0.1.1",
    "hexo-pwa": "^0.1.3",
    "hexo-renderer-ejs": "^1.0.0",
    "hexo-renderer-marked": "^4.0.0",
    "hexo-renderer-stylus": "^2.0.1",
    "hexo-server": "^2.0.0",
    "object-assign": "^4.1.1"
  },
  "devDependencies": {
    "hexo-cli": "^4.2.0",
    "hexo-feed": "^1.1.0",
    "hexo-front-matter": "^2.0.0",
    "hexo-fs": "^3.1.0"
  }
}

[github-actions]

This issue has been automatically marked as stale because lack of recent activity. It will be closed if no further activity occurs. Thank you for your contributions.

[kristofzerbe]

Thanks for reopening the issue...

What I've mentioned, that code blocks in the content are also not converted through my configured highlight.js

Is there any chance to get a solution or an hint how to achieve my goal?

[stevenjoezhang]

For example, hexo.render.render is called in line 403 to 418 of /lib/hexo/post.js:

hexo/lib/hexo/post.js

Lines 403 to 418 in 00bcce5

	return ctx.render.render({
	text: data.content,
	path: source,
	engine: data.engine,
	toString: true,
	onRenderEnd(content) {
	// Replace cache data with real contents
	data.content = cacheObj.restoreAllSwigTags(content);
	// Return content after replace the placeholders
	if (disableNunjucks) return data.content;
	// Render with Nunjucks
	return tag.render(data.content, data);
	}
	}, options);

However, the processing of code blocks and tag plugins are as follows, from line 362 to 425:

hexo/lib/hexo/post.js

Lines 362 to 425 in 00bcce5

	render(source, data = {}, callback) {
	const ctx = this.context;
	const { config } = ctx;
	const { tag } = ctx.extend;
	const ext = data.engine || (source ? extname(source) : '');
	let promise;
	if (data.content != null) {
	promise = Promise.resolve(data.content);
	} else if (source) {
	// Read content from files
	promise = readFile(source);
	} else {
	return Promise.reject(new Error('No input file or string!')).asCallback(callback);
	}
	// disable Nunjucks when the renderer specify that.
	let disableNunjucks = ext && ctx.render.renderer.get(ext) && !!ctx.render.renderer.get(ext).disableNunjucks;
	// front-matter overrides renderer's option
	if (typeof data.disableNunjucks === 'boolean') disableNunjucks = data.disableNunjucks;
	const cacheObj = new PostRenderEscape();
	return promise.then(content => {
	data.content = content;
	// Run "before_post_render" filters
	return ctx.execFilter('before_post_render', data, { context: ctx });
	}).then(() => {
	data.content = cacheObj.escapeCodeBlocks(data.content);
	// Escape all Nunjucks/Swig tags
	if (disableNunjucks === false) {
	data.content = cacheObj.escapeAllSwigTags(data.content);
	}
	const options = data.markdown || {};
	if (!config.highlight.enable) options.highlight = null;
	ctx.log.debug('Rendering post: %s', magenta(source));
	// Render with markdown or other renderer
	return ctx.render.render({
	text: data.content,
	path: source,
	engine: data.engine,
	toString: true,
	onRenderEnd(content) {
	// Replace cache data with real contents
	data.content = cacheObj.restoreAllSwigTags(content);
	// Return content after replace the placeholders
	if (disableNunjucks) return data.content;
	// Render with Nunjucks
	return tag.render(data.content, data);
	}
	}, options);
	}).then(content => {
	data.content = cacheObj.restoreCodeBlocks(content);
	// Run "after_post_render" filters
	return ctx.execFilter('after_post_render', data, { context: ctx });
	}).asCallback(callback);
	}

In other words, hexo.render.renderSync (or hexo.render.render) is just one step of post-rendering. You need to include the pre-processing code of Hexo in your scripts to make tag plugins work