1 files changed, 91 insertions, 0 deletions
diff --git a/library/Businessprocess/Storage/ConfigDiff.php b/library/Businessprocess/Storage/ConfigDiff.php
new file mode 100644
index 0000000..495151e
--- /dev/null
+++ b/library/Businessprocess/Storage/ConfigDiff.php
@@ -0,0 +1,91 @@
+<?php
+
+namespace Icinga\Module\Businessprocess\Storage;
+
+use Diff;
+use Diff_Renderer_Html_Inline;
+use Diff_Renderer_Html_SideBySide;
+use Diff_Renderer_Text_Context;
+use Diff_Renderer_Text_Unified;
+use ipl\Html\ValidHtml;
+
+class ConfigDiff implements ValidHtml
+{
+    protected $a;
+
+    protected $b;
+
+    protected $diff;
+    protected $opcodes;
+
+    protected function __construct($a, $b)
+    {
+        $this->requireVendorLib('Diff.php');
+
+        if (empty($a)) {
+            $this->a = array();
+        } else {
+            $this->a = explode("\n", (string) $a);
+        }
+
+        if (empty($b)) {
+            $this->b = array();
+        } else {
+            $this->b = explode("\n", (string) $b);
+        }
+
+        $options = array(
+            'context' => 5,
+            // 'ignoreWhitespace' => true,
+            // 'ignoreCase' => true,
+        );
+        $this->diff = new Diff($this->a, $this->b, $options);
+    }
+
+    /**
+     * @return string
+     */
+    public function render()
+    {
+        return $this->renderHtmlSideBySide();
+    }
+
+    public function renderHtmlSideBySide()
+    {
+        $this->requireVendorLib('Diff/Renderer/Html/SideBySide.php');
+        $renderer = new Diff_Renderer_Html_SideBySide;
+        return $this->diff->render($renderer);
+    }
+
+    public function renderHtmlInline()
+    {
+        $this->requireVendorLib('Diff/Renderer/Html/Inline.php');
+        $renderer = new Diff_Renderer_Html_Inline;
+        return $this->diff->render($renderer);
+    }
+
+    public function renderTextContext()
+    {
+        $this->requireVendorLib('Diff/Renderer/Text/Context.php');
+        $renderer = new Diff_Renderer_Text_Context;
+        return $this->diff->render($renderer);
+    }
+
+    public function renderTextUnified()
+    {
+        $this->requireVendorLib('Diff/Renderer/Text/Unified.php');
+        $renderer = new Diff_Renderer_Text_Unified;
+        return $this->diff->render($renderer);
+    }
+
+    protected function requireVendorLib($file)
+    {
+        require_once dirname(dirname(__DIR__)) . '/vendor/php-diff/lib/' . $file;
+    }
+
+    public static function create($a, $b)
+    {
+        $diff = new static($a, $b);
+        return $diff;
+    }
+}