Function xmlTextReaderReadString

ThirdParty/libxml2/vtklibxml2/xmlreader.c:1737–1808

* xmlTextReaderReadString: * @reader: the xmlTextReaderPtr used * * Reads the contents of an element or a text node as a string. * * Returns a string containing the contents of the Element or Text node, * or NULL if the reader is positioned on any other type of node. * The string must be deallocated by the caller. */

 *         The string must be deallocated by the caller.
 */
xmlChar *
xmlTextReaderReadString(xmlTextReaderPtr reader)
{
    xmlNodePtr node, cur;
    xmlBufPtr buf;
    xmlChar *ret;

    if ((reader == NULL) || (reader->node == NULL))
       return(NULL);

    node = (reader->curnode != NULL) ? reader->curnode : reader->node;
    switch (node->type) {
        case XML_TEXT_NODE:
        case XML_CDATA_SECTION_NODE:
            break;
        case XML_ELEMENT_NODE:
            if ((xmlTextReaderDoExpand(reader) == -1) ||
                (node->children == NULL))
                return(NULL);
            break;
        case XML_ATTRIBUTE_NODE:
            /* TODO */
            break;
        default:
            break;
    }

    buf = xmlBufCreateSize(30);
    if (buf == NULL) {
        xmlTextReaderErrMemory(reader);
        return(NULL);
    }
    xmlBufSetAllocationScheme(buf, XML_BUFFER_ALLOC_DOUBLEIT);

    cur = node;
    while (cur != NULL) {
        switch (cur->type) {
            case XML_TEXT_NODE:
            case XML_CDATA_SECTION_NODE:
                xmlBufCat(buf, cur->content);
                break;

            case XML_ELEMENT_NODE:
                if (cur->children != NULL) {
                    cur = cur->children;
                    continue;
                }
                break;

            default:
                break;
        }

        if (cur == node)
            goto done;

        while (cur->next == NULL) {
            cur = cur->parent;