[retro-gtk] core-descriptor: Add has_firmwares()

[Adrien Plazas <aplazas src gnome org>]

commit 6707a9b6b53f0f686f2cf7141a2a03cbae65555c
Author: Adrien Plazas <kekun plazas laposte net>
Date:   Thu Feb 16 17:22:35 2017 +0100

    core-descriptor: Add has_firmwares()
    
    Add the has_firmwares() method, allowing to know if get_firmwares() can
    be alled.

 retro-gtk/retro-core-descriptor.vala |    4 ++++
 1 files changed, 4 insertions(+), 0 deletions(-)
---
diff --git a/retro-gtk/retro-core-descriptor.vala b/retro-gtk/retro-core-descriptor.vala
index ad8aeab..7849a17 100644
--- a/retro-gtk/retro-core-descriptor.vala
+++ b/retro-gtk/retro-core-descriptor.vala
@@ -72,6 +72,10 @@ public class Retro.CoreDescriptor : Object {
                return key_file.has_group (PLATFORM_GROUP_PREFIX + platform);
        }
 
+       public bool has_firmwares (string platform) throws KeyFileError {
+               return key_file.has_key (PLATFORM_GROUP_PREFIX + platform, PLATFORM_FIRMWARES_KEY);
+       }
+
        public bool has_firmware_md5 (string firmware) throws KeyFileError {
                return key_file.has_key (FIRMWARE_GROUP_PREFIX + firmware, FIRMWARE_MD5_KEY);
        }