Switch passing mjml via argument to via stdin

Alternate fix to bug #25

Author: rrehbein

bin/mjml.mjs

@@ -1,10 +1,15 @@
 import mjml2html from 'mjml'
+import { text } from "node:stream/consumers";
 
 const args = JSON.parse(atob(process.argv.slice(2)));
 
-const mjml = args[0];
+let mjml = args[0];
 const options = args[1];
 
+if ('-' === mjml) {
+    mjml = atob(await text(process.stdin));
+}
+
 let result = ''
 
 try {

src/Mjml.php

@@ -208,10 +208,14 @@ protected function getSideCarResult(array $arguments): string
 
     protected function getLocalResult(array $arguments): string
     {
+        $mjmlTemplate = $arguments[0];
+        $arguments[0] = '-';
+
         $process = new Process(
             $this->getCommand($arguments),
             $this->workingDirectory,
         );
+        $process->setInput(base64_encode($mjmlTemplate));
 
         $process->run();
 

tests/MjmlTest.php

@@ -108,6 +108,19 @@
     ['<mjml><mj-body><mj-wrapper></mj-wrapper></mj-body></mjml>', true],
 ]);
 
+it('can render large mjml content', function () {
+    $mjml = '<mjml><mj-body>'.
+            implode('', array_pad([], 10_000, '<mj-wrapper>filler</mj-wrapper>'))
+            .'</mj-body></mjml>';
+    $result = Mjml::new()->convert($mjml);
+
+    expect($result)
+        ->toBeInstanceOf(MjmlResult::class)
+        ->html()->toBeString()
+        ->errors()->toHaveCount(0)
+        ->hasErrors()->toBeFalse();
+});
+
 function mjmlSnippet(): string
 {
     return <<<'MJML'