/*
* This file is part of Hubbub.
* Licensed under the MIT License,
* http://www.opensource.org/licenses/mit-license.php
* Copyright 2008 Andrew Sidwell <takkaria@netsurf-browser.org>
*/
#include <assert.h>
#include <string.h>
#include "treebuilder/modes.h"
#include "treebuilder/internal.h"
#include "treebuilder/treebuilder.h"
#include "utils/utils.h"
#include "utils/string.h"
/**
* Clear the stack back to a table context: "the UA must, while the current
* node is not a table element or an html element, pop elements from the stack
* of open elements."
*/
static inline void clear_stack_table_context(hubbub_treebuilder *treebuilder)
{
hubbub_ns ns;
element_type type = current_node(treebuilder);
void *node;
while (type != TABLE && type != HTML) {
element_stack_pop(treebuilder, &ns, &type, &node);
treebuilder->tree_handler->unref_node(
treebuilder->tree_handler->ctx,
node);
type = current_node(treebuilder);
}
}
/**
* Process an input start tag in the "in table" insertion mode.
*/
static inline hubbub_error process_input_in_table(
hubbub_treebuilder *treebuilder,
const hubbub_token *token)
{
hubbub_error err = HUBBUB_REPROCESS;
size_t i;
for (i = 0; i < token->data.tag.n_attributes; i++) {
hubbub_attribute *attr = &token->data.tag.attributes[i];
if (!hubbub_string_match_ci(attr->value.ptr, attr->value.len,
(uint8_t *) "hidden", SLEN("hidden"))) {
continue;
}
/** \todo parse error */
err = insert_element(treebuilder, &token->data.tag, true);
}
return err;
}
/**
* Handle token in "in table" insertion mode
*
* \param treebuilder The treebuilder instance
* \param token The token to handle
* \return True to reprocess token, false otherwise
*/
hubbub_error handle_in_table(hubbub_treebuilder *treebuilder,
const hubbub_token *token)
{
hubbub_error err = HUBBUB_OK;
bool handled = true;
switch (token->type) {
case HUBBUB_TOKEN_CHARACTER:
if (treebuilder->context.element_stack[
current_table(treebuilder)
].tainted) {
handled = false;
} else {
err = process_characters_expect_whitespace(
treebuilder, token, true);
handled = (err == HUBBUB_OK);
}
break;
case HUBBUB_TOKEN_COMMENT:
err = process_comment_append(treebuilder, token,
treebuilder->context.element_stack[
treebuilder->context.current_node].node);
break;
case HUBBUB_TOKEN_DOCTYPE:
/** \todo parse error */
break;
case HUBBUB_TOKEN_START_TAG:
{
element_type type = element_type_from_name(treebuilder,
&token->data.tag.name);
bool tainted = treebuilder->context.element_stack[
current_table(treebuilder)
].tainted;
if (type == CAPTION) {
clear_stack_table_context(treebuilder);
treebuilder->tree_handler->ref_node(
treebuilder->tree_handler->ctx,
treebuilder->context.element_stack[
treebuilder->context.current_node].node);
err = formatting_list_append(treebuilder,
token->data.tag.ns, type,
treebuilder->context.element_stack[
treebuilder->context.current_node].node,
treebuilder->context.current_node);
if (err != HUBBUB_OK) {
treebuilder->tree_handler->unref_node(
treebuilder->tree_handler->ctx,
treebuilder->context.element_stack[
treebuilder->context.current_node].node);
return err;
}
err = insert_element(treebuilder, &token->data.tag,
true);
if (err != HUBBUB_OK) {
hubbub_ns ns;
element_type type;
void *node;
uint32_t index;
formatting_list_remove(treebuilder,
treebuilder->context.formatting_list_end,
&ns, &type, &node, &index);
treebuilder->tree_handler->unref_node(
treebuilder->tree_handler->ctx,
node);
return err;
}
treebuilder->context.mode = IN_CAPTION;
} else if (type == COLGROUP || type == COL) {
hubbub_error e;
hubbub_tag tag = token->data.tag;
if (type == COL) {
/* Insert colgroup and reprocess */
tag.name.ptr = (const uint8_t *) "colgroup";
tag.name.len = SLEN("colgroup");
tag.n_attributes = 0;
tag.attributes = NULL;
err = HUBBUB_REPROCESS;
}
clear_stack_table_context(treebuilder);
e = insert_element(treebuilder, &tag, true);
if (e != HUBBUB_OK)
return e;
treebuilder->context.mode = IN_COLUMN_GROUP;
} else if (type == TBODY || type == TFOOT || type == THEAD ||
type == TD || type == TH || type == TR) {
hubbub_error e;
hubbub_tag tag = token->data.tag;
if (type == TD || type == TH || type == TR) {
/* Insert tbody and reprocess */
tag.name.ptr = (const uint8_t *) "tbody";
tag.name.len = SLEN("tbody");
tag.n_attributes = 0;
tag.attributes = NULL;
err = HUBBUB_REPROCESS;
}
clear_stack_table_context(treebuilder);
e = insert_element(treebuilder, &tag, true);
if (e != HUBBUB_OK)
return e;
treebuilder->context.mode = IN_TABLE_BODY;
} else if (type == TABLE) {
/** \todo parse error */
/* This should match "</table>" handling */
element_stack_pop_until(treebuilder, TABLE);
reset_insertion_mode(treebuilder);
err = HUBBUB_REPROCESS;
} else if (!tainted && (type == STYLE || type == SCRIPT)) {
err = handle_in_head(treebuilder, token);
} else if (!tainted && type == INPUT) {
err = process_input_in_table(treebuilder, token);
handled = (err == HUBBUB_OK);
} else {
handled = false;
}
}
break;
case HUBBUB_TOKEN_END_TAG:
{
element_type type = element_type_from_name(treebuilder,
&token->data.tag.name);
if (type == TABLE) {
/** \todo fragment case */
element_stack_pop_until(treebuilder, TABLE);
reset_insertion_mode(treebuilder);
} else if (type == BODY || type == CAPTION || type == COL ||
type == COLGROUP || type == HTML ||
type == TBODY || type == TD || type == TFOOT ||
type == TH || type == THEAD || type == TR) {
/** \todo parse error */
} else {
handled = false;
}
}
break;
case HUBBUB_TOKEN_EOF:
break;
}
if (!handled) {
treebuilder->context.in_table_foster = true;
/** \todo parse error */
err = handle_in_body(treebuilder, token);
treebuilder->context.in_table_foster = false;
}
return err;
}