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Low level representation of a XMPP node. Provides ways to set various parameters on the node, such as content, language, namespaces and prefixes. It also offers methods to lookup children of a node.
gboolean (*wocky_node_each_attr_func) (const gchar *key,const gchar *value,const gchar *pref,const gchar *ns,gpointer user_data);
Specifies the type of functions passed to wocky_node_each_attribute().
key |
the attribute's key |
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value |
the attribute's value |
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pref |
the attribute's prefix |
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ns |
the attribute's namespace |
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user_data |
user data passed to |
gboolean (*wocky_node_each_child_func) (WockyNode *node,gpointer user_data);
Specifies the type of functions passed to wocky_node_each_child().
void wocky_node_each_attribute (WockyNode *node,wocky_node_each_attr_func func,gpointer user_data);
Calls a function for each attribute of a WockyNode.
void wocky_node_each_child (WockyNode *node,wocky_node_each_child_func func,gpointer user_data);
Calls a function for each child of a WockyNode.
const gchar * wocky_node_get_attribute (WockyNode *node,const gchar *key);
Returns the value of an attribute in a WockyNode.
const gchar * wocky_node_get_attribute_ns (WockyNode *node,const gchar *key,const gchar *ns);
Returns the value of an attribute in a WockyNode, limiting the search
within a specific namespace. If the namespace is NULL, this is equivalent
to wocky_node_get_attribute().
void wocky_node_set_attribute (WockyNode *node,const gchar *key,const gchar *value);
Sets an attribute in a WockyNode to a specific value.
void wocky_node_set_attributes (WockyNode *node,const gchar *key,...);
Sets attributes in a WockyNode to specific values.
void wocky_node_set_attribute_ns (WockyNode *node,const gchar *key,const gchar *value,const gchar *ns);
Sets an attribute in a WockyNode, within a specific namespace.
If the namespace is NULL, this is equivalent to
wocky_node_set_attribute().
void wocky_node_set_attribute_n (WockyNode *node,const gchar *key,const gchar *value,gsize value_size);
Sets a new attribute to a WockyNode, with the supplied values.
void wocky_node_set_attribute_n_ns (WockyNode *node,const gchar *key,const gchar *value,gsize value_size,const gchar *ns);
Sets a new attribute to a WockyNode, with the supplied values.
If the namespace is NULL, this is equivalent to
wocky_node_set_attribute_n().
const gchar *
wocky_node_attribute_ns_get_prefix_from_urn
(const gchar *urn);
Gets the prefix of the namespace identified by the URN.
const gchar *
wocky_node_attribute_ns_get_prefix_from_quark
(GQuark ns);
Gets the prefix of the namespace identified by the quark.
void wocky_node_attribute_ns_set_prefix (GQuark ns,const gchar *prefix);
Sets a desired prefix for a namespace.
WockyNode * wocky_node_get_child (WockyNode *node,const gchar *name);
Gets a child of a node, searching by name.
WockyNode * wocky_node_get_child_ns (WockyNode *node,const gchar *name,const gchar *ns);
Gets the child of a node, searching by name and limiting the search
to the specified namespace.
If the namespace is NULL, this is equivalent to wocky_node_get_child()
WockyNode *
wocky_node_get_first_child (WockyNode *node);
Convenience function to return the first child of a WockyNode.
WockyNode * wocky_node_get_first_child_ns (WockyNode *node,const gchar *ns);
Returns the first child of node
whose namespace is ns
, saving you the
bother of faffing around with a WockyNodeIter.
const gchar * wocky_node_get_content_from_child (WockyNode *node,const gchar *name);
Retrieves the content from a child of a node, if it exists.
const gchar * wocky_node_get_content_from_child_ns (WockyNode *node,const gchar *name,const gchar *ns);
Retrieves the content from a child of a node, if it exists.
WockyNode * wocky_node_add_child (WockyNode *node,const gchar *name);
Adds a WockyNode with the specified name to an already existing node.
WockyNode * wocky_node_add_child_ns (WockyNode *node,const gchar *name,const gchar *ns);
Adds a WockyNode with the specified name to an already existing node,
under the specified namespace. If the namespace is NULL, this is equivalent
to wocky_node_add_child().
WockyNode * wocky_node_add_child_ns_q (WockyNode *node,const gchar *name,GQuark ns);
Adds a WockyNode with the specified name to an already existing node,
under the specified namespace. If the namespace is 0, this is equivalent
to wocky_node_add_child().
WockyNode * wocky_node_add_child_with_content (WockyNode *node,const gchar *name,const char *content);
Adds a WockyNode with the specified name and containing the specified content to an already existing node.
WockyNode * wocky_node_add_child_with_content_ns (WockyNode *node,const gchar *name,const gchar *content,const gchar *ns);
Adds a WockyNode with the specified name and the specified content
to an already existing node, under the specified namespace.
If the namespace is NULL, this is equivalent to
wocky_node_add_child_with_content().
WockyNode * wocky_node_add_child_with_content_ns_q (WockyNode *node,const gchar *name,const gchar *content,GQuark ns);
Adds a WockyNode with the specified name and the specified content
to an already existing node, under the specified namespace.
If the namespace is 0, this is equivalent to
wocky_node_add_child_with_content().
const gchar *
wocky_node_get_ns (WockyNode *node);
Gets the namespace of a WockyNode
gboolean wocky_node_matches_q (WockyNode *node,const gchar *name,GQuark ns);
Checks whether a node has a particular name and namespace.
gboolean wocky_node_matches (WockyNode *node,const gchar *name,const gchar *ns);
Checks whether a node has a particular name and namespace.
const gchar *
wocky_node_get_language (WockyNode *node);
Gets the language of a WockyNode
void wocky_node_set_language (WockyNode *node,const gchar *lang);
Sets the language of a WockyNode.
void wocky_node_set_language_n (WockyNode *node,const gchar *lang,gsize lang_size);
Sets the language of a WockyNode.
void wocky_node_set_content (WockyNode *node,const gchar *content);
Sets the content of a WockyNode.
void wocky_node_append_content (WockyNode *node,const gchar *content);
Appends some content to the content of a WockyNode.
void wocky_node_append_content_n (WockyNode *node,const gchar *content,gsize size);
Appends a specified number of content bytes to the content of a WockyNode.
gchar *
wocky_node_to_string (WockyNode *node);
Obtains a string representation of a WockyNode.
WockyNode * wocky_node_new (const char *name,const gchar *ns);
Convenience function which creates a WockyNode and sets its
name to name
.
void
wocky_node_free (WockyNode *node);
Convenience function that frees the passed in WockyNode and all of its children.
gboolean wocky_node_equal (WockyNode *node0,WockyNode *node1);
Compares two WockyNodes for equality.
void wocky_node_iter_init (WockyNodeIter *iter,WockyNode *node,const gchar *name,const gchar *ns);
Initializes an iterator that can be used to iterate over the children of
node
, filtered by name
and ns
WockyNodeIter iter;
WockyNode *child;
wocky_node_iter_init (&iter, wocky_stanza_get_top_node (stanza),
"payload-type",
WOCKY_XMPP_NS_JINGLE_RTP);
while (wocky_node_iter_next (iter, &child))
{
/<!-- -->* do something with the child *<!-- -->/
}
gboolean wocky_node_iter_next (WockyNodeIter *iter,WockyNode **next);
Advances iter to the next child that matches its filter. if FALSE is
returned next is not set and the iterator becomes invalid
void
wocky_node_iter_remove (WockyNodeIter *iter);
Removes and frees the node returned by the last call to
wocky_node_iter_next() from its parent. Can only be called after
wocky_node_iter_next() returned TRUE, and cannot be called more than once
per successful call to wocky_node_iter_next().
void wocky_node_add_build (WockyNode *node,...);
Add a node subtree to an existing parent node.
The above examples adds the following subtree under the given node:
<body> Telepathy rocks! </body>
node |
The node under which to add a new subtree |
|
... |
the description of the stanza to build,
terminated with |
WockyNode * wocky_node_add_node_tree (WockyNode *node,WockyNodeTree *tree);
Copies the nodes from tree
, and appends them to node
's children.
WockyNode * wocky_node_prepend_node_tree (WockyNode *node,WockyNodeTree *tree);
Copies the nodes from tree
, and inserts them as the first child of node
,
before any existing children.
void
wocky_node_init (void);
Initializes the caches used by WockyNode. This should be always called before using WockyNode structs.
void
wocky_node_deinit (void);
Releases all the resources used by the WockyNode caches.
Tags for building a stanza using wocky_stanza_build() or
wocky_node_add_build().
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Start of a node |
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Text content of a node |
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End of a node |
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A node attribute |
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A node XML namespace |
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a WockyNode to assign |
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struct WockyNode {
gchar *name;
gchar *content;
};
A single WockyNode structure that relates to an element in an XMPP stanza.
typedef struct {
} WockyNodeIter;
Iterate over a node's children. See wocky_node_iter_init() for more
details.