Add Handlebars::renderFile

Author: jbboehr

Diff for: src/Handlebars.php

@@ -294,6 +294,25 @@ public function render($tmpl, $context = null, $options = array())
         }
     }
 
+    /**
+     * Render a template from a file
+     *
+     * @param $filename
+     * @param $context
+     * @param $options
+     * @return string
+     * @throws \Handlebars\CompileException
+     * @throws \Handlebars\RuntimeException
+     */
+    public function renderFile($filename, $context = null, $options = array())
+    {
+        if( $this->mode === self::MODE_CVM ) {
+            return $this->cvm->renderFile($filename, $context, $options);
+        } else {
+            return $this->render(file_get_contents($filename), $context, $options);
+        }
+    }
+
     /**
      * Render a template in compiler mode
      *

Diff for: tests/HandlebarsTest.php

@@ -77,6 +77,12 @@ public function testRenderSupportsStdClass()
             )
         )));
     }
+
+    public function testRenderFile()
+    {
+        $handlebars = new Handlebars(array('mode' => Handlebars::MODE_CVM));
+        $this->assertEquals('bar', $handlebars->renderFile(__DIR__ . '/fixture1.hbs', array('foo' => 'bar')));
+    }
 
     public function testGH29RCEFix()
     {

Diff for: tests/fixture1.hbs

@@ -0,0 +1 @@
+{{foo}}