static void add_tag(lua_State *L, const GumboElement *element) {
if (element->tag_namespace == GUMBO_NAMESPACE_SVG) {
GumboStringPiece original_tag = element->original_tag;
gumbo_tag_from_original_text(&original_tag);
const char *normalized = gumbo_normalize_svg_tagname(&original_tag);
if (normalized) {
add_string(L, "tag", normalized);
return;
}
}
if (element->tag == GUMBO_TAG_UNKNOWN) {
GumboStringPiece original_tag = element->original_tag;
gumbo_tag_from_original_text(&original_tag);
luaL_Buffer b;
luaL_buffinit(L, &b);
for (size_t i = 0, n = original_tag.length; i < n; i++) {
const char c = original_tag.data[i];
luaL_addchar(&b, (c <= 'Z' && c >= 'A') ? c + 32 : c);
}
luaL_pushresult(&b);
} else {
lua_pushstring(L, gumbo_normalized_tagname(element->tag));
}
lua_setfield(L, -2, "tag");
}
static GString *handle_unknown_tag(GumboStringPiece *text) {
if (text->data == NULL)
return g_string_new(NULL);
// work with copy GumboStringPiece to prevent asserts
// if try to read same unknown tag name more than once
GumboStringPiece gsp = *text;
gumbo_tag_from_original_text(&gsp);
return g_string_new_len(gsp.data, gsp.length);
}
static void set_tag(lua_State *L, const GumboElement *element) {
if (element->tag_namespace == GUMBO_NAMESPACE_SVG) {
set_literal(L, "namespace", "svg");
GumboStringPiece original_tag = element->original_tag;
gumbo_tag_from_original_text(&original_tag);
const char *normalized = gumbo_normalize_svg_tagname(&original_tag);
if (normalized) {
set_string(L, "localName", normalized);
return;
}
} else if (element->tag_namespace == GUMBO_NAMESPACE_MATHML) {
set_literal(L, "namespace", "math");
}
if (element->tag == GUMBO_TAG_UNKNOWN) {
GumboStringPiece original_tag = element->original_tag;
gumbo_tag_from_original_text(&original_tag);
pushstring_lower(L, original_tag.data, original_tag.length);
} else {
lua_pushstring(L, gumbo_normalized_tagname(element->tag));
}
lua_setfield(L, -2, "localName");
}
std::string GumboInterface::get_tag_name(GumboNode *node)
{
std::string tagname;
if (node->type == GUMBO_NODE_DOCUMENT) {
tagname = "#document";
return tagname;
} else if ((node->type == GUMBO_NODE_TEXT) || (node->type == GUMBO_NODE_WHITESPACE)) {
tagname = "#text";
return tagname;
} else if (node->type == GUMBO_NODE_CDATA) {
tagname = "#cdata";
return tagname;
}
tagname = gumbo_normalized_tagname(node->v.element.tag);
if ((tagname.empty()) ||
(node->v.element.tag_namespace == GUMBO_NAMESPACE_SVG)) {
// set up to examine original text of tag.
GumboStringPiece gsp = node->v.element.original_tag;
gumbo_tag_from_original_text(&gsp);
// special handling for some svg tag names.
if (node->v.element.tag_namespace == GUMBO_NAMESPACE_SVG) {
const char * data = gumbo_normalize_svg_tagname(&gsp);
// NOTE: data may not be null-terminated!
// since case change only - length must be same as original
// if no replacement found returns null, not original tag!
if (data != NULL) {
return std::string(data, gsp.length);
}
}
if (tagname.empty()) {
return std::string(gsp.data, gsp.length);
}
}
return tagname;
}
