Function xmlTextReaderRead

Externals/LibXML/xmlreader.c:1232–1473

* xmlTextReaderRead: * @reader: the xmlTextReaderPtr used * * Moves the position of the current instance to the next node in * the stream, exposing its properties. * * Returns 1 if the node was read successfully, 0 if there is no more * nodes to read, or -1 in case of error */

 *          nodes to read, or -1 in case of error
 */
int
xmlTextReaderRead(xmlTextReaderPtr reader) {
    int val, olddepth = 0;
    xmlTextReaderState oldstate = XML_TEXTREADER_START;
    xmlNodePtr oldnode = NULL;

   
    if (reader == NULL)
	return(-1);
    reader->curnode = NULL;
    if (reader->doc != NULL)
        return(xmlTextReaderReadTree(reader));
    if (reader->ctxt == NULL)
	return(-1);
    if (reader->ctxt->wellFormed != 1)
	return(-1);

#ifdef DEBUG_READER
    fprintf(stderr, "\nREAD ");
    DUMP_READER
#endif
    if (reader->mode == XML_TEXTREADER_MODE_INITIAL) {
	reader->mode = XML_TEXTREADER_MODE_INTERACTIVE;
	/*
	 * Initial state
	 */
	do {
	    val = xmlTextReaderPushData(reader);
		if (val < 0){
			reader->mode = XML_TEXTREADER_MODE_ERROR;
			reader->state = XML_TEXTREADER_ERROR;
		return(-1);
		}
	} while ((reader->ctxt->node == NULL) &&
		 ((reader->mode != XML_TEXTREADER_MODE_EOF) &&
		  (reader->state != XML_TEXTREADER_DONE)));
	if (reader->ctxt->node == NULL) {
	    if (reader->ctxt->myDoc != NULL) {
		reader->node = reader->ctxt->myDoc->children;
	    }
	    if (reader->node == NULL){
			reader->mode = XML_TEXTREADER_MODE_ERROR;
			reader->state = XML_TEXTREADER_ERROR;
		return(-1);
		}
	    reader->state = XML_TEXTREADER_ELEMENT;
	} else {
	    if (reader->ctxt->myDoc != NULL) {
		reader->node = reader->ctxt->myDoc->children;
	    }
	    if (reader->node == NULL)
		reader->node = reader->ctxt->nodeTab[0];
	    reader->state = XML_TEXTREADER_ELEMENT;
	}
	reader->depth = 0;
	reader->ctxt->parseMode = XML_PARSE_READER;
	goto node_found;
    }