Added function Xml::filter.

diff --git a/src/xml.c b/src/xml.c
index 9af3cc7e62bbb04a4f0a3d04f0223a4334f5f6a9..0420cacb929e544cc257ad79c9d7a084c9194261 100644 (file)
--- a/src/xml.c
+++ b/src/xml.c
@@ -21,3 +21,32 @@
 #endif
 
 #include "xml.h"
+
+xmlNodeSet
+*zak_utils_xml_filter (xmlDoc *xdoc, xmlNode *xnode, const xmlChar *filter)
+{
+       xmlXPathContextPtr xpcontext;
+       xmlXPathObjectPtr xpresult;
+       xmlNodeSet *xnodeset;
+
+       xpcontext = xmlXPathNewContext (xdoc);
+       if (xnode != NULL)
+               {
+                       xpcontext->node = xnode;
+               }
+       else
+               {
+                       xpcontext->node = xmlDocGetRootElement (xdoc);
+               }
+       xpresult = xmlXPathEvalExpression (filter, xpcontext);
+       if (!xmlXPathNodeSetIsEmpty (xpresult->nodesetval))
+               {
+                       xnodeset = xpresult->nodesetval;
+               }
+       else
+               {
+                       xnodeset = NULL;
+               }
+
+       return xnodeset;
+}

diff --git a/src/xml.h b/src/xml.h
index 2b51e07f8bb8363cc943345d1d7049c7ce5b9dcf..bbf9499b87cf385ea61c576f8fca481ff058a246 100644 (file)
--- a/src/xml.h
+++ b/src/xml.h
@@ -24,11 +24,13 @@
 #include <glib-object.h>
 #include <gio/gio.h>
 #include <libxml/tree.h>
+#include <libxml/xpath.h>
 
 
 G_BEGIN_DECLS
 
 
+xmlNodeSet *zak_utils_xml_filter (xmlDoc *xdoc, xmlNode *xnode, const xmlChar *filter);
 
 
 G_END_DECLS