[xml] How to change the content

["Shi, Charles" <ccshi qualcomm com>]

Hi

   The buffer contains the XML, the size contains the length of the XML.
Then I call the following function. 

    I want to change the value in "reference" tag from  whatever
in it to "a-xxx".  After the function call.  I would like to see
the buffer  has this change.

    Could you tell me what is the right way to do this?

    Thank you very much

Charles
-------------------------------------------------------------------

const int XMLNode::parseMessageNode(char* buffer, const int size)
{
        xmlChar*    mem;
        xmlNodePtr      tag, subtag;

        m_doc = xmlParseMemory(buffer, size);

        if (m_doc == NULL)
                return -1;
        
        m_node = xmlDocGetRootElement(m_doc);

        if (m_node == NULL)
                return -1;

        if (xmlStrcmp(m_node->name, (const xmlChar*) "mobilesys") != 0)
                return -1;

        tag = m_node->xmlChildrenNode;
        while (tag != NULL)
        {
                if (xmlStrcmp(tag->name, (const xmlChar*) "node") == 0)
                {
                        subtag = tag->xmlChildrenNode;
                        while (subtag != NULL)
                        {
                                if (xmlStrcmp(subtag->name, (const
xmlChar*)                                               "reference") ==
0)
                                {
                                        mem = xmlGetProp(subtag, (const
xmlChar*)"reftype");
                                        fprintf(stderr, "Prop: %s**\n",
mem);
                                        xmlFree((void *)mem);

                                        mem =
xmlNodeListGetString(m_doc, 
        
subtag->xmlChildrenNode, 1);
                                        fprintf(stderr, "Content: %s\n",
mem);
                                        xmlFree((void *)mem);
                                        
                                        xmlNodeSetContentLen(subtag, 
                                                        (const
xmlChar*)"a-xxx", 5);
                                }

                                subtag = subtag->next;
                        }
                }

                tag = tag->next;
        }

        return 0;
}