[gupnp-av] Add XML helper functions getting number from child contents.

[Jens Georg <jensgeorg src gnome org>]

commit 0836346d50b63893dfbe6b958eb742f339700c59
Author: Krzesimir Nowak <krnowak openismus com>
Date:   Fri Sep 7 13:45:22 2012 +0200

    Add XML helper functions getting number from child contents.
    
    Will be needed by update ID getters in object and container.

 libgupnp-av/xml-util.c |   30 ++++++++++++++++++++++++++++++
 libgupnp-av/xml-util.h |   12 ++++++++++++
 2 files changed, 42 insertions(+), 0 deletions(-)
---
diff --git a/libgupnp-av/xml-util.c b/libgupnp-av/xml-util.c
index 92e71bb..4d345b8 100644
--- a/libgupnp-av/xml-util.c
+++ b/libgupnp-av/xml-util.c
@@ -1,9 +1,11 @@
 /*
  * Copyright (C) 2006, 2007 OpenedHand Ltd.
  * Copyright (C) 2007 Zeeshan Ali.
+ * Copyright (C) 2012 Intel Corporation
  *
  * Author: Jorn Baayen <jorn openedhand com>
  * Author: Zeeshan Ali (Khattak) <zeeshanak gnome org>
+ * Author: Krzesimir Nowak <krnowak openismus com>
  *
  * This library is free software; you can redistribute it and/or
  * modify it under the terms of the GNU Library General Public
@@ -93,6 +95,34 @@ xml_util_get_child_element_content (xmlNode    *node,
         return content;
 }
 
+guint
+xml_util_get_uint_child_element (xmlNode    *node,
+                                 const char *child_name,
+                                 guint       default_value)
+{
+        const char *content;
+
+        content = xml_util_get_child_element_content (node, child_name);
+        if (!content)
+                return default_value;
+
+        return strtoul (content, NULL, 0);
+}
+
+guint64
+xml_util_get_uint64_child_element (xmlNode    *node,
+                                   const char *child_name,
+                                   guint64     default_value)
+{
+        const char *content;
+
+        content = xml_util_get_child_element_content (node, child_name);
+        if (!content)
+                return default_value;
+
+        return g_ascii_strtoull (content, NULL, 0);
+}
+
 const char *
 xml_util_get_attribute_content (xmlNode    *node,
                                 const char *attribute_name)
diff --git a/libgupnp-av/xml-util.h b/libgupnp-av/xml-util.h
index e50066c..80d9b82 100644
--- a/libgupnp-av/xml-util.h
+++ b/libgupnp-av/xml-util.h
@@ -1,9 +1,11 @@
 /*
  * Copyright (C) 2006, 2007 OpenedHand Ltd.
  * Copyright (C) 2007 Zeeshan Ali.
+ * Copyright (C) 2012 Intel Corporation
  *
  * Author: Jorn Baayen <jorn openedhand com>
  * Author: Zeeshan Ali (Khattak) <zeeshanak gnome org>
+ * Author: Krzesimir Nowak <krnowak openismus com>
  *
  * This library is free software; you can redistribute it and/or
  * modify it under the terms of the GNU Library General Public
@@ -41,6 +43,16 @@ G_GNUC_INTERNAL const char *
 xml_util_get_child_element_content      (xmlNode    *node,
                                          const char *child_name);
 
+G_GNUC_INTERNAL guint
+xml_util_get_uint_child_element         (xmlNode    *node,
+                                         const char *child_name,
+                                         guint       default_value);
+
+G_GNUC_INTERNAL guint64
+xml_util_get_uint64_child_element       (xmlNode    *node,
+                                         const char *child_name,
+                                         guint64     default_value);
+
 G_GNUC_INTERNAL const char *
 xml_util_get_attribute_content          (xmlNode    *node,
                                          const char *attribute_name);