Initial commit

site/OFF_plugins/imagekit/lib/optimizer/gifsicle.php

@@ -0,0 +1,74 @@
+<?php
+
+namespace Kirby\Plugins\ImageKit\Optimizer;
+
+use F;
+
+
+/**
+ * Lossless optimization of GIF files by using `gifsicle`.
+ * Supports animated GIFs.
+ *
+ * See: https://www.lcdf.org/gifsicle/
+ */
+class Gifsicle extends Base {
+
+  public static $selector    = ['image/gif'];
+  public $priority           = [false, 50];
+
+  protected $targetFile;
+  protected $tempFile;
+  
+
+  public static function defaults() {
+    return [
+      'imagekit.gifsicle.bin'    => null,
+      'imagekit.gifsicle.level'  => 3,
+      'imagekit.gifsicle.colors' => false,
+      'imagekit.gifsicle.flags'  => '',
+    ];
+  }
+
+  public static function available() {
+    return !empty(static::$kirby->option('imagekit.gifsicle.bin'));
+  }
+
+  public function post() {
+
+    $tmpFile = $this->getTemporaryFilename();
+
+    $command = [];
+
+    $command[] = static::$kirby->option('imagekit.gifsicle.bin');
+
+    if($this->thumb->options['interlace']) {
+      $command[] = '--interlace';
+    }
+
+    // Set colors
+    $colors = $this->option('imagekit.gifsicle.colors');
+    if($colors !== false) {
+      $command[] = "--colors $colors";
+    }
+
+    // Set optimization level.
+    $command[] = '--optimize=' . $this->option('imagekit.gifsicle.level');
+
+    $flags = $this->option('imagekit.gifsicle.flags');
+    if(!empty($flags)) {
+      // Add exra flags, if defined by user.
+      $command[] = $flags;
+    }
+
+    // Set output file
+    $command[] = '--output "' . $tmpFile . '"';
+
+    // Set input file
+    $command[] = '"' . $this->thumb->destination->root . '"';
+    
+    exec(implode(' ', $command));
+
+    $this->keepSmallestFile($this->thumb->destination->root, $tmpFile);
+  }
+
+}