Cache: adding cacheData (see #39)

Image.php

@@ -279,7 +279,7 @@ public function __call($methodName, $args)
             return $this;
         }
 
-        throw new \BadFunctionCallException('Invalid method: '.$func);
+        throw new \BadFunctionCallException('Invalid method: '.$methodName);
     }
 
     /**
@@ -340,6 +340,9 @@ public function getHash($type = 'guess', $quality = 80)
      * Gets the cache file name and generate it if it does not exists.
      * Note that if it exists, all the image computation process will
      * not be done.
+     *
+     * @param $type the image type
+     * @param $quality the quality (for JPEG)
      */
     public function cacheFile($type = 'jpg', $quality = 80)
     {
@@ -366,6 +369,17 @@ public function cacheFile($type = 'jpg', $quality = 80)
         return $this->getFilename($file);
     }
 
+    /**
+     * Get cache data (to render the image)
+     *
+     * @param $type the image type
+     * @param $quality the quality (for JPEG)
+     */
+    public function cacheData($type = 'jpg', $quality = 80)
+    {
+        return file_get_contents($this->cacheFile($type, $quality));
+    }
+
     /**
      * Hook to helps to extends and enhance this class
      */

composer.json

@@ -12,7 +12,7 @@
         }
     ],
     "require": {
-        "gregwar/cache": "v1.0.2",
+        "gregwar/cache": "v1.0.3",
         "php": ">=5.3.0",
         "ext-gd": "*"
     },

tests/ImageTests.php

@@ -136,6 +136,17 @@ public function testActualCache()
         $this->assertTrue(file_exists($file));
     }
 
+    public function testCacheData()
+    {
+        $output = $this->open('monalisa.jpg')
+            ->resize(300, 200)
+            ->cacheData();
+
+        $jpg = imagecreatefromstring($output);
+        $this->assertEquals(300, imagesx($jpg));
+        $this->assertEquals(200, imagesy($jpg));
+    }
+
     /**
      * Testing using cache
      */