integrate jsonschema2markdown; add support for inline markdown rendering from templates

src/themes.ts

@@ -0,0 +1,64 @@
+
+import { glob } from 'glob';
+import { Config } from './conf';
+import { load_from_dir } from './fs';
+import { ColorTheme, themes as builtin_themes, load_theme as load_builtin_theme, validate_theme } from '@doc-utils/color-themes';
+
+export async function load_themes(conf: Config) {
+	const themes: Record<string, ColorTheme> = { };
+
+	for (const theme of builtin_themes) {
+		themes[theme] = load_builtin_theme(theme);
+	}
+
+	if (conf.templates?.themes) {
+		const local_themes = await glob(conf.templates.themes + '/**/theme.json');
+
+		for (const theme_path of local_themes) {
+			const segments = theme_path.split('/');
+			const theme = segments[segments.length - 2];
+			themes[theme] = await load_local_theme(conf, theme);
+		}
+	}
+
+	return themes;
+}
+
+export async function load_theme(conf: Config, name: string) {
+	if (name.includes('/')) {
+		return null;
+	}
+
+	const local_theme = await load_local_theme(conf, name);
+
+	if (local_theme) {
+		return local_theme;
+	}
+
+	return load_builtin_theme(name);
+}
+
+export async function load_local_theme(conf: Config, name: string) {
+	let json: string;
+
+	try {
+		json = await load_from_dir(conf.templates?.themes, `./${name}/theme.json`);
+	}
+	
+	catch (error) {
+		return null;
+	}
+
+	const theme = JSON.parse(json);
+	validate_theme(theme);
+	return theme;
+}
+
+export function render_theme_css_properties(theme: ColorTheme) {
+	return Object
+		.entries(theme.colors)
+		.map(([ name, color ]) => {
+			return `--theme-${name.replace(/_/g, '-')}: ${color};`;
+		})
+		.join('\n') + '\n';
+}