static void
sgml_parsing_push(struct dom_stack *stack, struct dom_node *node, void *data)
{
struct sgml_parser *parser = get_sgml_parser(stack);
struct sgml_parsing_state *parsing = data;
parsing->depth = parser->stack.depth;
get_dom_stack_top(&parser->stack)->immutable = 1;
init_dom_scanner(&parsing->scanner, &sgml_scanner_info, &node->string,
SGML_STATE_TEXT, 0);
}
/* Parse a CSS3 selector and add selector nodes to the @select struct. */
static enum dom_code
parse_dom_select(struct dom_select *select, struct dom_stack *stack,
struct dom_string *string)
{
struct dom_scanner scanner;
struct dom_select_node sel;
init_dom_scanner(&scanner, &dom_css_scanner_info, string, 0, 0, 1, 0, 0);
memset(&sel, 0, sizeof(sel));
while (dom_scanner_has_tokens(&scanner)) {
struct dom_scanner_token *token = get_dom_scanner_token(&scanner);
enum dom_code code;
struct dom_select_node *select_node;
assert(token);
if (token->type == '{'
|| token->type == '}'
|| token->type == ';'
|| token->type == ',')
break;
/* Examine the selector fragment */
switch (token->type) {
case CSS_TOKEN_IDENT:
sel.node.type = DOM_NODE_ELEMENT;
copy_dom_string(&sel.node.string, &token->string);
if (dom_scanner_token_contains(token, "*"))
sel.match.element |= DOM_SELECT_ELEMENT_UNIVERSAL;
break;
case CSS_TOKEN_HASH:
case CSS_TOKEN_HEX_COLOR:
/* ID fragment */
sel.node.type = DOM_NODE_ATTRIBUTE;
sel.match.attribute |= DOM_SELECT_ATTRIBUTE_ID;
/* Skip the leading '#'. */
skip_dom_scanner_token_char(token);
break;
case '[':
sel.node.type = DOM_NODE_ATTRIBUTE;
code = parse_dom_select_attribute(&sel, &scanner);
if (code != DOM_CODE_OK)
return code;
break;
case '.':
token = get_next_dom_scanner_token(&scanner);
if (!token || token->type != CSS_TOKEN_IDENT)
return DOM_CODE_SYNTAX_ERR;
sel.node.type = DOM_NODE_ATTRIBUTE;
sel.match.attribute |= DOM_SELECT_ATTRIBUTE_SPACE_LIST;
set_dom_string(&sel.node.string, "class", -1);
copy_dom_string(&sel.node.data.attribute.value, &token->string);
break;
case ':':
code = parse_dom_select_pseudo(select, &sel, &scanner);
if (code != DOM_CODE_OK)
return code;
break;
case '>':
if (get_element_relation(&sel) != DOM_SELECT_RELATION_DESCENDANT)
return DOM_CODE_SYNTAX_ERR;
sel.match.element |= DOM_SELECT_RELATION_DIRECT_CHILD;
break;
case '+':
if (get_element_relation(&sel) != DOM_SELECT_RELATION_DESCENDANT)
return DOM_CODE_SYNTAX_ERR;
sel.match.element |= DOM_SELECT_RELATION_DIRECT_ADJACENT;
break;
case '~':
if (get_element_relation(&sel) != DOM_SELECT_RELATION_DESCENDANT)
return DOM_CODE_SYNTAX_ERR;
sel.match.element |= DOM_SELECT_RELATION_INDIRECT_ADJACENT;
break;
default:
return DOM_CODE_SYNTAX_ERR;
}
skip_dom_scanner_token(&scanner);
if (sel.node.type == DOM_NODE_UNKNOWN)
continue;
select_node = mem_calloc(1, sizeof(*select_node));
copy_struct(select_node, &sel);
if (!dom_stack_is_empty(stack)) {
struct dom_node *node = &select_node->node;
struct dom_node *parent = get_dom_stack_top(stack)->node;
struct dom_node_list **list = get_dom_node_list(parent, node);
int sort = (node->type == DOM_NODE_ATTRIBUTE);
int index;
assertm(list != NULL, "Adding node to bad parent [%d -> %d]",
node->type, parent->type);
index = *list && (*list)->size > 0 && sort
? get_dom_node_map_index(*list, node) : -1;
if (!add_to_dom_node_list(list, node, index)) {
done_dom_node(node);
return DOM_CODE_ALLOC_ERR;
}
node->parent = parent;
} else {
assert(!select->selector);
select->selector = select_node;
}
code = push_dom_node(stack, &select_node->node);
if (code != DOM_CODE_OK)
return code;
if (select_node->node.type != DOM_NODE_ELEMENT)
pop_dom_node(stack);
memset(&sel, 0, sizeof(sel));
}
if (select->selector)
return DOM_CODE_OK;
return DOM_CODE_ERR;
}
static void
parse_sgml_plain(struct dom_stack *stack, struct dom_scanner *scanner)
{
struct dom_scanner_token target;
while (dom_scanner_has_tokens(scanner)) {
struct dom_scanner_token *token = get_dom_scanner_token(scanner);
switch (token->type) {
case SGML_TOKEN_ELEMENT:
case SGML_TOKEN_ELEMENT_BEGIN:
if (!add_sgml_element(stack, token)) {
if (token->type == SGML_TOKEN_ELEMENT) {
skip_dom_scanner_token(scanner);
break;
}
skip_sgml_tokens(scanner, SGML_TOKEN_TAG_END);
break;
}
if (token->type == SGML_TOKEN_ELEMENT_BEGIN) {
parse_sgml_attributes(stack, scanner);
} else {
skip_dom_scanner_token(scanner);
}
break;
case SGML_TOKEN_ELEMENT_EMPTY_END:
pop_dom_node(stack);
skip_dom_scanner_token(scanner);
break;
case SGML_TOKEN_ELEMENT_END:
if (!token->string.length) {
pop_dom_node(stack);
} else {
struct dom_string string;
struct dom_stack_state *state;
set_dom_string(&string, token->string.string, token->string.length);
state = search_dom_stack(stack, DOM_NODE_ELEMENT,
&string);
if (state) {
struct sgml_parser_state *pstate;
pstate = get_sgml_parser_state(stack, state);
copy_struct(&pstate->end_token, token);
pop_dom_state(stack, state);
}
}
skip_dom_scanner_token(scanner);
break;
case SGML_TOKEN_NOTATION_COMMENT:
add_sgml_node(stack, DOM_NODE_COMMENT, token);
skip_dom_scanner_token(scanner);
break;
case SGML_TOKEN_NOTATION_ATTLIST:
case SGML_TOKEN_NOTATION_DOCTYPE:
case SGML_TOKEN_NOTATION_ELEMENT:
case SGML_TOKEN_NOTATION_ENTITY:
case SGML_TOKEN_NOTATION:
skip_dom_scanner_token(scanner);
break;
case SGML_TOKEN_CDATA_SECTION:
add_sgml_node(stack, DOM_NODE_CDATA_SECTION, token);
skip_dom_scanner_token(scanner);
break;
case SGML_TOKEN_PROCESS_XML_STYLESHEET:
case SGML_TOKEN_PROCESS_XML:
case SGML_TOKEN_PROCESS:
copy_struct(&target, token);
/* Skip the target token */
token = get_next_dom_scanner_token(scanner);
if (!token) break;
assert(token->type == SGML_TOKEN_PROCESS_DATA);
if (add_sgml_proc_instruction(stack, &target, token)
&& (target.type == SGML_TOKEN_PROCESS_XML
|| target.type == SGML_TOKEN_PROCESS_XML_STYLESHEET)
&& token->string.length > 0) {
/* Parse the <?xml data="attributes"?>. */
struct dom_scanner attr_scanner;
init_dom_scanner(&attr_scanner, &sgml_scanner_info,
&token->string, SGML_STATE_ELEMENT,
scanner->count_lines);
if (dom_scanner_has_tokens(&attr_scanner))
parse_sgml_attributes(stack, &attr_scanner);
}
pop_dom_node(stack);
skip_dom_scanner_token(scanner);
break;
case SGML_TOKEN_ENTITY:
add_sgml_node(stack, DOM_NODE_ENTITY_REFERENCE, token);
skip_dom_scanner_token(scanner);
break;
case SGML_TOKEN_SPACE:
case SGML_TOKEN_TEXT:
default:
add_sgml_node(stack, DOM_NODE_TEXT, token);
skip_dom_scanner_token(scanner);
}
}
}
