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/*
* Copyright 2012 Vincent Sanders <vince@netsurf-browser.org>
*
* This file is part of NetSurf, http://www.netsurf-browser.org/
*
* NetSurf is free software; you can redistribute it and/or modify
* it under the terms of the GNU General Public License as published by
* the Free Software Foundation; version 2 of the License.
*
* NetSurf is distributed in the hope that it will be useful,
* but WITHOUT ANY WARRANTY; without even the implied warranty of
* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
* GNU General Public License for more details.
*
* You should have received a copy of the GNU General Public License
* along with this program. If not, see <http://www.gnu.org/licenses/>.
*/
#include <dom/dom.h>
#include <dom/bindings/hubbub/parser.h>
#include "utils/config.h"
#include "utils/log.h"
#include "domutils.h"
/* search children of a node for first named element */
dom_node *find_first_named_dom_element(dom_node *parent, lwc_string *element_name)
{
dom_node *element;
dom_exception exc;
dom_string *node_name = NULL;
dom_node_type node_type;
dom_node *next_node;
exc = dom_node_get_first_child(parent, &element);
if ((exc != DOM_NO_ERR) || (element == NULL)) {
return NULL;
}
/* find first node thats a element */
do {
exc = dom_node_get_node_type(element, &node_type);
if ((exc == DOM_NO_ERR) && (node_type == DOM_ELEMENT_NODE)) {
exc = dom_node_get_node_name(element, &node_name);
if ((exc == DOM_NO_ERR) && (node_name != NULL)) {
if (dom_string_caseless_lwc_isequal(node_name,
element_name)) {
dom_string_unref(node_name);
break;
}
dom_string_unref(node_name);
}
}
exc = dom_node_get_next_sibling(element, &next_node);
dom_node_unref(element);
if (exc == DOM_NO_ERR) {
element = next_node;
} else {
element = NULL;
}
} while (element != NULL);
return element;
}
void domutils_iterate_child_elements(dom_node *parent,
domutils_iterate_cb cb, void *ctx)
{
dom_nodelist *children;
uint32_t index, num_children;
dom_exception error;
error = dom_node_get_child_nodes(parent, &children);
if (error != DOM_NO_ERR || children == NULL)
return;
error = dom_nodelist_get_length(children, &num_children);
if (error != DOM_NO_ERR) {
dom_nodelist_unref(children);
return;
}
for (index = 0; index < num_children; index++) {
dom_node *child;
dom_node_type type;
error = dom_nodelist_item(children, index, &child);
if (error != DOM_NO_ERR) {
dom_nodelist_unref(children);
return;
}
error = dom_node_get_node_type(child, &type);
if (error == DOM_NO_ERR && type == DOM_ELEMENT_NODE) {
if (cb(child, ctx) == false) {
dom_node_unref(child);
dom_nodelist_unref(children);
return;
}
}
dom_node_unref(child);
}
dom_nodelist_unref(children);
}
static void ignore_dom_msg(uint32_t severity, void *ctx, const char *msg, ...)
{
}
dom_document *domutils_parse_file(const char *filename, const char *encoding)
{
dom_hubbub_error error;
dom_hubbub_parser *parser;
dom_document *document;
FILE *fp = NULL;
#define BUF_SIZE 512
uint8_t buf[BUF_SIZE];
fp = fopen(filename, "r");
if (fp == NULL) {
return NULL;
}
parser = dom_hubbub_parser_create(encoding, false, false,
ignore_dom_msg, NULL, NULL, &document);
if (parser == NULL) {
fclose(fp);
return NULL;
}
while (feof(fp) == 0) {
size_t read = fread(buf, sizeof(buf[0]), BUF_SIZE, fp);
error = dom_hubbub_parser_parse_chunk(parser, buf, read);
if (error != DOM_HUBBUB_OK) {
dom_node_unref(document);
dom_hubbub_parser_destroy(parser);
fclose(fp);
return NULL;
}
}
error = dom_hubbub_parser_completed(parser);
if (error != DOM_HUBBUB_OK) {
dom_node_unref(document);
dom_hubbub_parser_destroy(parser);
fclose(fp);
return NULL;
}
dom_hubbub_parser_destroy(parser);
return document;
}
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