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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"
/**
* Process a <base>, <link>, or <meta> start tag as if in "in head"
*
* \param treebuilder The treebuilder instance
* \param token The token to process
* \param type The type of element (BASE, LINK, or META)
*/
static void process_base_link_meta_in_head(hubbub_treebuilder *treebuilder,
const hubbub_token *token, element_type type)
{
insert_element_no_push(treebuilder, &token->data.tag);
if (type == META) {
/** \todo charset extraction */
}
}
/**
* Process a <script> start tag as if in "in head"
*
* \param treebuilder The treebuilder instance
* \param token The token to process
*/
static void process_script_in_head(hubbub_treebuilder *treebuilder,
const hubbub_token *token)
{
int success;
void *script;
hubbub_tokeniser_optparams params;
success = treebuilder->tree_handler->create_element(
treebuilder->tree_handler->ctx,
&token->data.tag, &script);
if (success != 0) {
/** \todo errors */
}
/** \todo mark script as parser-inserted */
/* It would be nice to be able to re-use the generic
* rcdata character collector here. Unfortunately, we
* can't as we need to do special processing after the
* script data has been collected, so we use an almost
* identical insertion mode which does the right magic
* at the end. */
params.content_model.model = HUBBUB_CONTENT_MODEL_CDATA;
hubbub_tokeniser_setopt(treebuilder->tokeniser,
HUBBUB_TOKENISER_CONTENT_MODEL,
¶ms);
treebuilder->context.collect.mode = treebuilder->context.mode;
treebuilder->context.collect.node = script;
treebuilder->context.collect.type = SCRIPT;
treebuilder->context.collect.string.data.off = 0;
treebuilder->context.collect.string.len = 0;
treebuilder->context.mode = SCRIPT_COLLECT_CHARACTERS;
}
/**
* Handle token in "in head" insertion mode
*
* \param treebuilder The treebuilder instance
* \param token The token to handle
* \return True to reprocess token, false otherwise
*/
bool handle_in_head(hubbub_treebuilder *treebuilder,
const hubbub_token *token)
{
bool reprocess = false;
bool handled = false;
switch (token->type) {
case HUBBUB_TOKEN_CHARACTER:
reprocess = process_characters_expect_whitespace(treebuilder,
token, true);
break;
case HUBBUB_TOKEN_COMMENT:
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);
if (type == HTML) {
/* Process as if "in body" */
handle_in_body(treebuilder, token);
} else if (type == BASE || type == COMMAND ||
type == EVENTSOURCE || type == LINK) {
process_base_link_meta_in_head(treebuilder,
token, type);
/** \todo ack sc flag */
} else if (type == META) {
process_base_link_meta_in_head(treebuilder,
token, type);
/** \todo ack sc flag */
/** \todo detect charset */
} else if (type == TITLE) {
parse_generic_rcdata(treebuilder, token, true);
} else if (type == NOFRAMES || type == STYLE) {
parse_generic_rcdata(treebuilder, token, false);
} else if (type == NOSCRIPT) {
/** \todo determine if scripting is enabled */
if (false /*scripting_is_enabled*/) {
parse_generic_rcdata(treebuilder, token, false);
} else {
insert_element(treebuilder, &token->data.tag);
treebuilder->context.mode = IN_HEAD_NOSCRIPT;
}
} else if (type == SCRIPT) {
process_script_in_head(treebuilder, token);
} else if (type == HEAD) {
/** \todo parse error */
} else {
reprocess = true;
}
}
break;
case HUBBUB_TOKEN_END_TAG:
{
element_type type = element_type_from_name(treebuilder,
&token->data.tag.name);
if (type == HEAD) {
handled = true;
} else if (type == BR) {
reprocess = true;
} /** \todo parse error */
}
break;
case HUBBUB_TOKEN_EOF:
reprocess = true;
break;
}
if (handled || reprocess) {
hubbub_ns ns;
element_type otype;
void *node;
if (!element_stack_pop(treebuilder, &ns, &otype, &node)) {
/** \todo errors */
}
treebuilder->tree_handler->unref_node(
treebuilder->tree_handler->ctx,
node);
treebuilder->context.mode = AFTER_HEAD;
}
return reprocess;
}
/**
* Process a tag as if in the "in head" state.
*
* \param treebuilder The treebuilder instance
* \param token The token to process
* \return True to reprocess the token, false otherwise
*/
bool process_in_head(hubbub_treebuilder *treebuilder,
const hubbub_token *token)
{
return handle_in_head(treebuilder, token);
}
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