[gnome-games] local-cover: Fetch only the required attributes

[Adrien Plazas <aplazas src gnome org>]

commit 03488ab1d0f5a4f698e33722bb117b0435db83a7
Author: theawless <theawless gmail com>
Date:   Sun Jun 10 14:09:14 2018 +0530

    local-cover: Fetch only the required attributes
    
    Fetching fewer attributes speeds up loading time. Also, users are likely
    to have covers with sane image extensions, hence use fast content type.
    
    https://gitlab.gnome.org/GNOME/gnome-games/issues/11

 src/utils/local-cover.vala | 10 ++++++----
 1 file changed, 6 insertions(+), 4 deletions(-)
---
diff --git a/src/utils/local-cover.vala b/src/utils/local-cover.vala
index 4172758..4a26d33 100644
--- a/src/utils/local-cover.vala
+++ b/src/utils/local-cover.vala
@@ -58,7 +58,8 @@ public class Games.LocalCover : Object, Cover {
 
                string cover_path = null;
                var directory = new Directory (parent);
-               directory.foreach ("*", (sibbling) => {
+               var attributes = string.join (",", FileAttribute.STANDARD_NAME, 
FileAttribute.STANDARD_FAST_CONTENT_TYPE);
+               directory.foreach (attributes, (sibbling) => {
                        var sibbling_basename = sibbling.get_name ();
                        if (sibbling_basename == basename)
                                return false;
@@ -66,7 +67,7 @@ public class Games.LocalCover : Object, Cover {
                        if (!sibbling_basename.has_prefix (prefix))
                                return false;
 
-                       var type = sibbling.get_content_type ();
+                       var type = sibbling.get_attribute_string (FileAttribute.STANDARD_FAST_CONTENT_TYPE);
                        if (!type.has_prefix ("image"))
                                return false;
 
@@ -87,13 +88,14 @@ public class Games.LocalCover : Object, Cover {
 
                string cover_path = null;
                var directory = new Directory (parent);
-               directory.foreach ("*", (sibbling) => {
+               var attributes = string.join (",", FileAttribute.STANDARD_NAME, 
FileAttribute.STANDARD_FAST_CONTENT_TYPE);
+               directory.foreach (attributes, (sibbling) => {
                        var sibbling_basename = sibbling.get_name ();
                        if (!sibbling_basename.has_prefix ("cover.") &&
                            !sibbling_basename.has_prefix ("folder."))
                                return false;
 
-                       var type = sibbling.get_content_type ();
+                       var type = sibbling.get_attribute_string (FileAttribute.STANDARD_FAST_CONTENT_TYPE);
                        if (!type.has_prefix ("image"))
                                return false;