[gnome-games] utils: Add Directory

[Adrien Plazas <aplazas src gnome org>]

commit 71b30aa1acc302839265e6a8be64eb3167462946
Author: Adrien Plazas <kekun plazas laposte net>
Date:   Fri Aug 12 11:37:24 2016 +0200

    utils: Add Directory
    
    This will be used in the next commit to loop through files in a
    directory.
    
    https://bugzilla.gnome.org/show_bug.cgi?id=769676

 src/Makefile.am          |    1 +
 src/utils/directory.vala |   29 +++++++++++++++++++++++++++++
 2 files changed, 30 insertions(+), 0 deletions(-)
---
diff --git a/src/Makefile.am b/src/Makefile.am
index 17a9c79..be548d6 100644
--- a/src/Makefile.am
+++ b/src/Makefile.am
@@ -112,6 +112,7 @@ gnome_games_SOURCES = \
        utils/cue-sheet/cue-sheet-file-node.vala \
        utils/cue-sheet/cue-sheet-track-mode.vala \
        utils/cue-sheet/cue-sheet-track-node.vala \
+       utils/directory.vala \
        utils/filename-title.vala \
        utils/fingerprint.vala \
        utils/grep.vala \
diff --git a/src/utils/directory.vala b/src/utils/directory.vala
new file mode 100644
index 0000000..583fc79
--- /dev/null
+++ b/src/utils/directory.vala
@@ -0,0 +1,29 @@
+// This file is part of GNOME Games. License: GPLv3
+
+public class Games.Directory : Object {
+       public delegate bool FileInfoTest (FileInfo file_info) throws Error;
+
+       private GLib.File file;
+
+       public Directory (GLib.File file) {
+               this.file = file;
+       }
+
+       public void @foreach (string attributes, FileInfoTest file_info_test) throws Error {
+               var enumerator = file.enumerate_children (attributes, FileQueryInfoFlags.NONE);
+               for (var file_info = enumerator.next_file () ; file_info != null ; file_info = 
enumerator.next_file ())
+                       if (file_info_test (file_info))
+                               return;
+       }
+
+       private FileInfo? try_next_file (FileEnumerator enumerator) {
+               try {
+                       return enumerator.next_file ();
+               }
+               catch (Error e) {
+                       debug (e.message);
+
+                       return null;
+               }
+       }
+}