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/*
* This file is part of Hubbub.
* Licensed under the MIT License,
* http://www.opensource.org/licenses/mit-license.php
* Copyright 2008 John-Mark Bell <jmb@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"
/**
* Handle token in "before html" insertion mode
*
* \param treebuilder The treebuilder instance
* \param token The token to handle
* \return True to reprocess token, false otherwise
*/
bool handle_before_html(hubbub_treebuilder *treebuilder,
const hubbub_token *token)
{
bool reprocess = false;
bool handled = false;
switch (token->type) {
case HUBBUB_TOKEN_DOCTYPE:
/** \todo parse error */
break;
case HUBBUB_TOKEN_COMMENT:
process_comment_append(treebuilder, token,
treebuilder->context.document);
break;
case HUBBUB_TOKEN_CHARACTER:
reprocess = process_characters_expect_whitespace(treebuilder,
token, false);
break;
case HUBBUB_TOKEN_START_TAG:
{
element_type type = element_type_from_name(treebuilder,
&token->data.tag.name);
if (type == HTML) {
handled = true;
} else {
reprocess = true;
}
}
break;
case HUBBUB_TOKEN_END_TAG:
case HUBBUB_TOKEN_EOF:
reprocess = true;
break;
}
if (handled || reprocess) {
int success;
void *html, *appended;
/* We can't use insert_element() here, as it assumes
* that we're inserting into current_node. There is
* no current_node to insert into at this point so
* we get to do it manually. */
if (reprocess) {
/* Need to manufacture html element */
hubbub_tag tag;
/** \todo UTF-16 */
tag.ns = HUBBUB_NS_HTML;
tag.name.type = HUBBUB_STRING_PTR;
tag.name.data.ptr = (const uint8_t *) "html";
tag.name.len = SLEN("html");
tag.n_attributes = 0;
tag.attributes = NULL;
success = treebuilder->tree_handler->create_element(
treebuilder->tree_handler->ctx,
&tag, &html);
} else {
success = treebuilder->tree_handler->create_element(
treebuilder->tree_handler->ctx,
&token->data.tag, &html);
}
if (success != 0) {
/** \todo errors */
}
success = treebuilder->tree_handler->append_child(
treebuilder->tree_handler->ctx,
treebuilder->context.document,
html, &appended);
if (success != 0) {
/** \todo errors */
treebuilder->tree_handler->unref_node(
treebuilder->tree_handler->ctx,
html);
}
/* We can't use element_stack_push() here, as it
* assumes that current_node is pointing at the index
* before the one to insert at. For the first entry in
* the stack, this does not hold so we must insert
* manually. */
treebuilder->context.element_stack[0].type = HTML;
treebuilder->context.element_stack[0].node = html;
treebuilder->context.current_node = 0;
/** \todo cache selection algorithm */
treebuilder->tree_handler->unref_node(
treebuilder->tree_handler->ctx,
appended);
treebuilder->context.mode = BEFORE_HEAD;
}
return reprocess;
}
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