add fragment option

packages/ipynb2html-cli/src/cli.ts

@@ -29,6 +29,8 @@ Arguments:
 Options:
   -d --debug             Print debug messages.
 
+  -f --fragment          Output HTML fragment insted of full page.
+
   -s --style <file,...>  Comma separated stylesheet(s) to embed into the output
                          HTML. The stylesheet may be a path to a CSS file,
                          "@base" for the base ipynb2html style, or "@default"
@@ -56,6 +58,7 @@ function arrify <T> (obj: T | T[]): T[] {
 function parseCliArgs (argv: string[]) {
   const opts = minimist(argv, minimistOptions({
     debug: { alias: 'd', type: 'boolean' },
+    fragment: { alias: 'f', type: 'boolean' },
     style: { alias: 's', type: 'string', default: '@default' },
     version: { alias: 'V', type: 'boolean' },
     help: { alias: 'h', type: 'boolean' },
@@ -90,6 +93,7 @@ function parseCliArgs (argv: string[]) {
   return {
     styles: arrify(opts.style).join(',').split(/,\s*/),
     debug: opts.debug as boolean,
+    fragment: opts.fragment as boolean,
     input: input === '-' ? 0 : input,  // 0 = stdin
     output,
   }
@@ -116,7 +120,7 @@ export default (argv: string[]): void => {
     const renderNotebook = ipynb2html.createRenderer(new Document())
     const contents = renderNotebook(notebook).outerHTML
 
-    const html = renderPage({ contents, title, style })
+    const html = opts.fragment ? contents : renderPage({ contents, title, style })
 
     if (opts.output) {
       fs.writeFileSync(opts.output, html)