/*

 * In this file we put utility functions shared by all bindings.

 *

 * They usually are data structure manipulation or conversion functions.

 */

#include <libxml/tree.h>

#include "../lasso/utils.h"

/**

 * lasso_string_fragment_to_xmlnode:

 * @fragment: a fragment of an XML document

 * @size: 

 *

 * Try to get one and only one node from a string, the node can be a simple string or a single node.

 *

 * Return value: a newly allocated xmlNode* or NULL if parsing fails.

 */

static xmlNode*

lasso_string_fragment_to_xmlnode(const char *fragment, int size) {

	xmlDoc *doc = NULL;

	xmlNode *node = NULL;

	xmlNode *list = NULL, *ref = NULL;

	xmlParserErrors errors;

	if (size == 0) {

		size = strlen(fragment);

	}

	/* single node case, with preceding or following spaces */

	doc = xmlReadMemory(fragment, size, NULL, NULL, XML_PARSE_NONET);

	if (doc) {

		node = xmlDocGetRootElement(doc);

		if (node != NULL) {

			node = xmlCopyNode(node, 1);

			goto cleanup;

		}

		lasso_release_doc(doc);

	}

	/* simple string */

	doc = xmlNewDoc(BAD_CAST "1.0");

	ref = xmlNewNode(NULL, BAD_CAST "root");

	xmlDocSetRootElement(doc, ref);

	errors  = xmlParseInNodeContext(ref, fragment, size,

		XML_PARSE_NONET, &list);

	if (errors == XML_ERR_OK && list != NULL && list->next == NULL) {

		node = xmlCopyNode(list, 1);

	}

cleanup:

	lasso_release_doc(doc);

	lasso_release_xml_node_list(list);

	return node;

}