added ImageNotWritableException

src/Intervention/Image/Exception/ImageNotWritableException.php

@@ -0,0 +1,8 @@
+<?php
+
+namespace Intervention\Image\Exception;
+
+class ImageNotWritableException extends \RuntimeException
+{
+    # nothing to override
+}

src/Intervention/Image/Image.php

@@ -336,6 +336,7 @@ class Image
         // catch legacy call
         if (is_array($width)) {
             $dimensions = $width;
+
             return $this->legacyResize($dimensions);
         }
 
@@ -427,6 +428,7 @@ class Image
     {
         $width = array_key_exists('width', $dimensions) ? intval($dimensions['width']) : null;
         $height = array_key_exists('height', $dimensions) ? intval($dimensions['height']) : null;
+
         return $this->resize($width, $height, true);
     }
 
@@ -638,6 +640,7 @@ class Image
         // catch legacy call
         if (is_array($width)) {
             $dimensions = $width;
+
             return $this->legacyGrab($dimensions);
         }
 
@@ -1270,6 +1273,7 @@ class Image
         $data = ob_get_contents();
 
         ob_end_clean();
+
         return $data;
     }
 
@@ -1388,11 +1392,9 @@ class Image
         }
 
         if (isset($allocatedColor)) {
-
             return $allocatedColor;
 
         } elseif (isset($r) && isset($g) && isset($b)) {
-
             return imagecolorallocatealpha($this->resource, $r, $g, $b, $a);
 
         } else {
@@ -1411,7 +1413,11 @@ class Image
     public function save($path = null, $quality = 90)
     {
         $path = is_null($path) ? ($this->dirname .'/'. $this->basename) : $path;
-        file_put_contents($path, $this->encode(pathinfo($path, PATHINFO_EXTENSION), $quality));
+        $saved = @file_put_contents($path, $this->encode(pathinfo($path, PATHINFO_EXTENSION), $quality));
+
+        if ($saved === false) {
+            throw new Exception\ImageNotWritableException;
+        }
 
         return $this;
     }
@@ -1427,7 +1433,7 @@ class Image
      */
     public function exif($key = null)
     {
-        if (!function_exists('exif_read_data')) {
+        if (! function_exists('exif_read_data')) {
             throw new Exception\ExifFunctionsNotAvailableException;
         }
 
@@ -1522,8 +1528,10 @@ class Image
             if (get_resource_type($input) != 'gd') {
                 throw new Exception\InvalidImageResourceException;
             }
+
             return true;
         }
+
         return false;
     }