/**
* Extract an imagemap from html source
*
* \param node XML node containing map
* \param c Content containing document
* \param entry List of map entries
* \return false on memory exhaustion, true otherwise
*/
bool imagemap_extract_map(xmlNode *node, html_content *c,
struct mapentry **entry)
{
xmlNode *this_node;
assert(c != NULL);
assert(entry != NULL);
if (node->type == XML_ELEMENT_NODE) {
/** \todo ignore <area> elements if there are other
* block-level elements present in map
*/
if (strcmp((const char *) node->name, "area") == 0 ||
strcmp((const char *) node->name, "a") == 0) {
if (imagemap_addtolist(node, c->base_url,
entry) == false)
return false;
}
} else {
return true;
}
for (this_node = node->children; this_node != NULL;
this_node = this_node->next) {
if (imagemap_extract_map(this_node, c, entry) == false)
return false;
}
return true;
}
/**
* Extract an imagemap from html source
*
* \param node XML node containing map
* \param c Content containing document
* \param entry List of map entries
* \param tname The sub-tags to consider on this pass
* \return false on memory exhaustion, true otherwise
*/
static bool
imagemap_extract_map_entries(dom_node *node, html_content *c,
struct mapentry **entry, dom_string *tname)
{
dom_nodelist *nlist;
dom_exception exc;
unsigned long ent;
uint32_t tag_count;
exc = dom_element_get_elements_by_tag_name(node, tname, &nlist);
if (exc != DOM_NO_ERR) {
return false;
}
exc = dom_nodelist_get_length(nlist, &tag_count);
if (exc != DOM_NO_ERR) {
dom_nodelist_unref(nlist);
return false;
}
for (ent = 0; ent < tag_count; ++ent) {
dom_node *subnode;
exc = dom_nodelist_item(nlist, ent, &subnode);
if (exc != DOM_NO_ERR) {
dom_nodelist_unref(nlist);
return false;
}
if (imagemap_addtolist(c, subnode, c->base_url,
entry, tname) == false) {
dom_node_unref(subnode);
dom_nodelist_unref(nlist);
return false;
}
dom_node_unref(subnode);
}
dom_nodelist_unref(nlist);
return true;
}
