its now possible to provide a string template

Author: leongrdic

readme.md

@@ -175,10 +175,10 @@ params can be encapsulated into `|` characters if your expression contains `,`
 ## Class
 
 ```php
-new Le\Dataplater\Dataplater(string $template, array $vars)
+new Le\Dataplater\Dataplater(?string $filename, ?string $template, array $vars)
 ```
 
-when creating an object, pass your template filename as the first constructor parameter. the second parameter is optional and can hold global variables that will be made available to each render of the template.
+when creating an object, pass your template filename as the first constructor parameter. if you instead want to load template HTML from a string, skip the first argument by using named arguments (e.g. `template: $htmlString`). when you want to define global vars, pass them to the argument vars (e.g. `vars: $globalVariables`).
 
 ```php
 $dataplater->render(array $vars);

src/Dataplater.php

@@ -15,16 +15,25 @@ class Dataplater
      * @throws Exception
      */
     public function __construct(
-        string $filename,
+        ?string $filename = null,
+        ?string $template = null,
         public array $vars = []
     )
     {
-        if(!file_exists($filename)) throw new Exception('template file not found');
-        $html = file_get_contents($filename);
+        if($filename === null && $template === null)
+            throw new Exception('must provide either the filename or the template string param');
+
+        if($filename !== null && $template !== null)
+            throw new Exception('you can either pass the filename or template string params, not both');
+
+        if($filename !== null) {
+            if (!file_exists($filename)) throw new Exception('template file not found');
+            $template = file_get_contents($filename);
+        }
 
         libxml_use_internal_errors(true);
         $this->doc = new DOMDocument();
-        $this->doc->loadHTML($html);
+        $this->doc->loadHTML($template);
         $this->xpath = new DOMXpath($this->doc);
 
         $this->defineBuiltInFunctions();