[libvirt] [PATCH 06/14] util: Add helper to convert libxml2 nodes to a string

[Peter Krempa]

---
 src/libvirt_private.syms |  1 +
 src/util/virxml.c        | 33 +++++++++++++++++++++++++++++++++
 src/util/virxml.h        |  2 ++
 3 files changed, 36 insertions(+)

diff --git a/src/libvirt_private.syms b/src/libvirt_private.syms
index 0631941..18e9a4b 100644
--- a/src/libvirt_private.syms
+++ b/src/libvirt_private.syms
@@ -2091,6 +2091,7 @@ virUUIDParse;

 # util/virxml.h
 virXMLChildElementCount;
+virXMLNodeDump;
 virXMLParseHelper;
 virXMLPickShellSafeComment;
 virXMLPropString;
diff --git a/src/util/virxml.c b/src/util/virxml.c
index f652ee0..44d6f27 100644
--- a/src/util/virxml.c
+++ b/src/util/virxml.c
@@ -895,3 +895,36 @@ virXMLChildElementCount(xmlNodePtr node)
     }
     return ret;
 }
+
+
+/**
+ * virXMLNodeDump: convert a XML node ptr to a XML string
+ *
+ * Returns the XML string of the document or NULL on error.
+ * The caller has to free the string.
+ */
+char *
+virXMLNodeDump(xmlDocPtr doc,
+               xmlNodePtr node)
+{
+     xmlBufferPtr xmlbuf = NULL;
+     char *ret = NULL;
+
+     if (!(xmlbuf = xmlBufferCreate())) {
+         virReportOOMError();
+         return NULL;
+     }
+
+     if (xmlNodeDump(xmlbuf, doc, node, 0, 1) == 0) {
+         virReportError(VIR_ERR_INTERNAL_ERROR, "%s",
+                        _("failed to dump XML node tree"));
+         goto cleanup;
+     }
+
+     ignore_value(VIR_STRDUP(ret, (const char *)xmlBufferContent(xmlbuf)));
+
+cleanup:
+     xmlBufferFree(xmlbuf);
+
+     return ret;
+}
diff --git a/src/util/virxml.h b/src/util/virxml.h
index 364288d..9165cb1 100644
--- a/src/util/virxml.h
+++ b/src/util/virxml.h
@@ -163,4 +163,6 @@ int virXMLSaveFile(const char *path,
                    const char *warnCommand,
                    const char *xml);

+char *virXMLNodeDump(xmlDocPtr doc, xmlNodePtr node);
+
 #endif                          /* __VIR_XML_H__ */
-- 
1.8.3.2