fix for bug #872: Folders not holding any images are ignored, even if they hold subfolders with images

apps/gallery/lib/scanner.php

@@ -97,18 +97,18 @@ class OC_Gallery_Scanner {
 					foreach ($a as $e) {
 						$p .= ($p == '/'?'':'/').$e;
 						OC_Gallery_Album::create(OCP\USER::getUser(), $e, $p);
-            $arr = OC_FileCache::searchByMime('image','', OC_Filesystem::getRoot().$p);
-            $step = floor(count($arr)/10);
-            if ($step == 0) $step = 1;
-            $na = array();
-            for ($j = 0; $j < count($arr); $j+=$step) {
-              $na[] = $p.$arr[$j];
-            }
-            if (count($na))
-              self::createThumbnails($e, $na);
+						$arr = OC_FileCache::searchByMime('image','', OC_Filesystem::getRoot().$p);
+						$step = floor(count($arr)/10);
+						if ($step == 0) $step = 1;
+						$na = array();
+						for ($j = 0; $j < count($arr); $j+=$step) {
+							$na[] = $p.$arr[$j];
+						}
+						if (count($na))
+							self::createThumbnails($e, $na);
 					}
 				}
-			}
+			} 
 		}
 	}
 
@@ -126,19 +126,25 @@ class OC_Gallery_Scanner {
 		return $new;
 	}
 
-	public static function findPaths() {
-		$images=OC_FileCache::searchByMime('image','', self::getScanningRoot());
-		$paths=array();
-		foreach($images as $image){
-			$path=dirname($image);
-			$path = self::getGalleryRoot().($path=='.'?'':$path);
-			if ($path !== '/') $path=rtrim($path,'/');
-			if(array_search($path,$paths)===false){
-				$paths[]=$path;
-			}
-		}
-		sort($paths);
-		return $paths;
+	public static function findPaths() {
+		$images=OC_FileCache::searchByMime('image','', self::getScanningRoot());
+		$paths=array();
+		foreach($images as $image){
+			$path=dirname($image);
+			$path = self::getGalleryRoot().($path=='.'?'':$path);
+			if ($path !== '/') $path=rtrim($path,'/');
+			if(array_search($path,$paths)===false){
+				$paths[]=$path;
+			}
+			// add sub path also if they don't contain images
+			while ( ($path = dirname($path)) != '/') {
+				if(array_search($path,$paths)===false){
+					$paths[]=$path;
+				}
+			}
+			$subs = dirname($path);
+		}
+		sort($paths);
+		return $paths;
 	}
 }
-