first pass at raw, text files

src/template.ts

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+
+import { Config } from './conf';
+import { render as mustache_render } from 'mustache';
+import { promises as fs } from 'fs';
+import { resolve as resolve_path } from 'path';
+import { glob } from 'glob';
+
+export interface Context {
+	env?: Record<string, string>;
+	page?: {
+		title?: string;
+		layout?: string;
+		[key: string]: string | number | boolean;
+	};
+	build_time: {
+		iso: string;
+		rfc2822: string;
+	};
+}
+
+export function render_template(template: string, context: Context, layout?: string, partials?: Record<string, string>) {
+	partials['.content'] = template;
+	return mustache_render(layout || template, context, partials);
+}
+
+export async function load_layout(conf: Config, file: string) {
+	const path = conf.templates?.layouts;
+
+	if (! path) {
+		return null;
+	}
+
+	const rel_path = resolve_path('/', file);
+	const abs_path = resolve_path(path, '.' + rel_path);
+	return await fs.readFile(abs_path, 'utf8');
+}
+
+export async function load_partials(conf: Config) {
+	const path = conf.templates?.partials;
+
+	if (! path) {
+		return { };
+	}
+
+	const partials: Record<string, string> = { };
+	const partial_files = await glob(path + '/**/*', {
+		cwd: path,
+		absolute: false,
+	});
+
+	for (const file of partial_files) {
+		const abs_file = resolve_path(path, file);
+		partials[file] = await fs.readFile(abs_file, 'utf8');
+	}
+
+	return partials;
+}