From e1762e7764d4ee4f37757ecd2630f62a440dbf0e Mon Sep 17 00:00:00 2001
From: Igor Scheller <igor.scheller@igorshp.de>
Date: Thu, 20 Jul 2017 02:22:18 +0200
Subject: replaced template_render with dynamic renderer class

---
 src/Renderer/EngineInterface.php | 21 ++++++++++++++
 src/Renderer/HtmlEngine.php      | 34 ++++++++++++++++++++++
 src/Renderer/Renderer.php        | 62 ++++++++++++++++++++++++++++++++++++++++
 src/helpers.php                  | 17 +++++++++++
 4 files changed, 134 insertions(+)
 create mode 100644 src/Renderer/EngineInterface.php
 create mode 100644 src/Renderer/HtmlEngine.php
 create mode 100644 src/Renderer/Renderer.php

(limited to 'src')

diff --git a/src/Renderer/EngineInterface.php b/src/Renderer/EngineInterface.php
new file mode 100644
index 00000000..ca468db5
--- /dev/null
+++ b/src/Renderer/EngineInterface.php
@@ -0,0 +1,21 @@
+<?php
+
+namespace Engelsystem\Renderer;
+
+interface EngineInterface
+{
+    /**
+     * Render a template
+     *
+     * @param string  $path
+     * @param mixed[] $data
+     * @return string
+     */
+    public function get($path, $data = []);
+
+    /**
+     * @param string $path
+     * @return bool
+     */
+    public function canRender($path);
+}
diff --git a/src/Renderer/HtmlEngine.php b/src/Renderer/HtmlEngine.php
new file mode 100644
index 00000000..4a48e1f0
--- /dev/null
+++ b/src/Renderer/HtmlEngine.php
@@ -0,0 +1,34 @@
+<?php
+
+namespace Engelsystem\Renderer;
+
+class HtmlEngine implements EngineInterface
+{
+    /**
+     * Render a template
+     *
+     * @param string  $path
+     * @param mixed[] $data
+     * @return string
+     */
+    public function get($path, $data = [])
+    {
+        $template = file_get_contents($path);
+        if (is_array($data)) {
+            foreach ($data as $name => $content) {
+                $template = str_replace('%' . $name . '%', $content, $template);
+            }
+        }
+
+        return $template;
+    }
+
+    /**
+     * @param string $path
+     * @return bool
+     */
+    public function canRender($path)
+    {
+        return strpos($path, '.html') && file_exists($path);
+    }
+}
diff --git a/src/Renderer/Renderer.php b/src/Renderer/Renderer.php
new file mode 100644
index 00000000..bf3d5609
--- /dev/null
+++ b/src/Renderer/Renderer.php
@@ -0,0 +1,62 @@
+<?php
+
+namespace Engelsystem\Renderer;
+
+use ErrorException;
+
+class Renderer
+{
+    /** @var self */
+    protected static $instance;
+
+    /** @var EngineInterface[] */
+    protected $renderer = [];
+
+    /**
+     * Render a template
+     *
+     * @param string  $template
+     * @param mixed[] $data
+     * @return string
+     */
+    public function render($template, $data = [])
+    {
+        foreach ($this->renderer as $renderer) {
+            if (!$renderer->canRender($template)) {
+                continue;
+            }
+
+            return $renderer->get($template, $data);
+        }
+
+        engelsystem_error('Unable to find a renderer for template file &laquo;' . $template . '&raquo;.');
+        return '';
+    }
+
+    /**
+     * Add a new renderer engine
+     *
+     * @param EngineInterface $renderer
+     */
+    public function addRenderer(EngineInterface $renderer)
+    {
+        $this->renderer[] = $renderer;
+    }
+
+    /**
+     * @return self
+     * @throws ErrorException
+     */
+    public static function getInstance()
+    {
+        return self::$instance;
+    }
+
+    /**
+     * @param self $instance
+     */
+    public static function setInstance($instance)
+    {
+        self::$instance = $instance;
+    }
+}
diff --git a/src/helpers.php b/src/helpers.php
index a410b27e..d44d1d21 100644
--- a/src/helpers.php
+++ b/src/helpers.php
@@ -3,6 +3,7 @@
 
 use Engelsystem\Config\Config;
 use Engelsystem\Http\Request;
+use Engelsystem\Renderer\Renderer;
 
 /**
  * Get or set config values
@@ -39,3 +40,19 @@ function request($key = null, $default = null)
 
     return $request->input($key, $default);
 }
+
+/**
+ * @param string  $template
+ * @param mixed[] $data
+ * @return Renderer|string
+ */
+function view($template = null, $data = null)
+{
+    $renderer = Renderer::getInstance();
+
+    if (is_null($template)) {
+        return $renderer;
+    }
+
+    return $renderer->render($template, $data);
+}
-- 
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