[gvfs] Add metafile_key_unset

[Alexander Larsson <alexl src gnome org>]

commit aa9ddac43dde6b17bec09a5490d698960290101c
Author: Alexander Larsson <alexl redhat com>
Date:   Mon Jun 22 11:48:17 2009 +0200

    Add metafile_key_unset

 metadata/metabuilder.c |   14 ++++++++++++++
 metadata/metabuilder.h |    2 ++
 2 files changed, 16 insertions(+), 0 deletions(-)
---
diff --git a/metadata/metabuilder.c b/metadata/metabuilder.c
index 8e0fff2..4d58355 100644
--- a/metadata/metabuilder.c
+++ b/metadata/metabuilder.c
@@ -200,6 +200,20 @@ metadata_clear (MetaData *data)
 }
 
 void
+metafile_key_unset (MetaFile *metafile,
+		    const char *key)
+{
+  MetaData *data;
+
+  data = metafile_key_lookup (metafile, key, FALSE);
+  if (data)
+    {
+      metafile->data = g_list_remove (metafile->data, data);
+      metadata_free (data);
+    }
+}
+
+void
 metafile_key_set_value (MetaFile *metafile,
 			const char *key,
 			const char *value)
diff --git a/metadata/metabuilder.h b/metadata/metabuilder.h
index ba6e555..3af05bb 100644
--- a/metadata/metabuilder.h
+++ b/metadata/metabuilder.h
@@ -45,6 +45,8 @@ MetaFile *   metafile_lookup_child  (MetaFile    *metafile,
 MetaData *   metafile_key_lookup    (MetaFile    *file,
 				     const char  *key,
 				     gboolean     create);
+void         metafile_key_unset     (MetaFile    *metafile,
+				     const char  *key);
 void         metafile_key_set_value (MetaFile    *metafile,
 				     const char  *key,
 				     const char  *value);