static nserror
html_stylesheet_from_domnode(html_content *c,
dom_node *node,
hlcache_handle **sheet)
{
hlcache_child_context child;
dom_string *style;
nsurl *url;
dom_exception exc;
nserror error;
uint32_t key;
char urlbuf[64];
child.charset = c->encoding;
child.quirks = c->base.quirks;
exc = dom_node_get_text_content(node, &style);
if ((exc != DOM_NO_ERR) || (style == NULL)) {
LOG("No text content");
return NSERROR_OK;
}
error = html_css_fetcher_add_item(style, c->base_url, &key);
if (error != NSERROR_OK) {
dom_string_unref(style);
return error;
}
dom_string_unref(style);
snprintf(urlbuf, sizeof(urlbuf), "x-ns-css:%u", key);
error = nsurl_create(urlbuf, &url);
if (error != NSERROR_OK) {
return error;
}
error = hlcache_handle_retrieve(url, 0,
content_get_url(&c->base), NULL,
html_convert_css_callback, c, &child, CONTENT_CSS,
sheet);
if (error != NSERROR_OK) {
nsurl_unref(url);
return error;
}
nsurl_unref(url);
c->base.active++;
LOG("%d fetches active", c->base.active);
return NSERROR_OK;
}
static dom_hubbub_error
exec_inline_script(html_content *c, dom_node *node, dom_string *mimetype)
{
union content_msg_data msg_data;
dom_string *script;
dom_exception exc; /* returned by libdom functions */
struct lwc_string_s *lwcmimetype;
script_handler_t *script_handler;
struct html_script *nscript;
/* does not appear to be a src so script is inline content */
exc = dom_node_get_text_content(node, &script);
if ((exc != DOM_NO_ERR) || (script == NULL)) {
return DOM_HUBBUB_OK; /* no contents, skip */
}
nscript = html_process_new_script(c, mimetype, HTML_SCRIPT_INLINE);
if (nscript == NULL) {
dom_string_unref(script);
msg_data.error = messages_get("NoMemory");
content_broadcast(&c->base, CONTENT_MSG_ERROR, msg_data);
return DOM_HUBBUB_NOMEM;
}
nscript->data.string = script;
nscript->already_started = true;
/* ensure script handler for content type */
dom_string_intern(mimetype, &lwcmimetype);
script_handler = select_script_handler(content_factory_type_from_mime_type(lwcmimetype));
lwc_string_unref(lwcmimetype);
if (script_handler != NULL) {
script_handler(c->jscontext,
dom_string_data(script),
dom_string_byte_length(script));
}
return DOM_HUBBUB_OK;
}
static bool save_complete_handle_element(save_complete_ctx *ctx,
dom_node *node, save_complete_event_type event_type)
{
dom_string *name;
dom_namednodemap *attrs;
const char *name_data;
size_t name_len;
bool process = true;
dom_exception error;
ctx->iter_state = STATE_NORMAL;
error = dom_node_get_node_name(node, &name);
if (error != DOM_NO_ERR)
return false;
if (name == NULL)
return true;
name_data = dom_string_data(name);
name_len = dom_string_byte_length(name);
if (name_len == SLEN("base") &&
strncasecmp(name_data, "base", name_len) == 0) {
/* Elide BASE elements from the output */
process = false;
} else if (name_len == SLEN("meta") &&
strncasecmp(name_data, "meta", name_len) == 0) {
/* Don't emit close tags for META elements */
if (event_type == EVENT_LEAVE) {
process = false;
} else {
/* Elide meta charsets */
dom_string *value;
error = dom_element_get_attribute(node,
corestring_dom_http_equiv, &value);
if (error != DOM_NO_ERR) {
dom_string_unref(name);
return false;
}
if (value != NULL) {
if (dom_string_length(value) ==
SLEN("Content-Type") &&
strncasecmp(dom_string_data(value),
"Content-Type",
SLEN("Content-Type")) == 0)
process = false;
dom_string_unref(value);
} else {
bool yes;
error = dom_element_has_attribute(node,
corestring_dom_charset, &yes);
if (error != DOM_NO_ERR) {
dom_string_unref(name);
return false;
}
if (yes)
process = false;
}
}
} else if (event_type == EVENT_LEAVE &&
((name_len == SLEN("link") &&
strncasecmp(name_data, "link", name_len) == 0))) {
/* Don't emit close tags for void elements */
process = false;
}
if (process == false) {
dom_string_unref(name);
return true;
}
fputc('<', ctx->fp);
if (event_type == EVENT_LEAVE)
fputc('/', ctx->fp);
fwrite(name_data, sizeof(*name_data), name_len, ctx->fp);
if (event_type == EVENT_ENTER) {
error = dom_node_get_attributes(node, &attrs);
if (error != DOM_NO_ERR) {
dom_string_unref(name);
return false;
}
if (save_complete_handle_attrs(ctx, name, attrs) == false) {
dom_namednodemap_unref(attrs);
dom_string_unref(name);
return false;
}
dom_namednodemap_unref(attrs);
}
fputc('>', ctx->fp);
/* Rewrite contents of style elements */
if (event_type == EVENT_ENTER && name_len == SLEN("style") &&
strncasecmp(name_data, "style", name_len) == 0) {
dom_string *content;
error = dom_node_get_text_content(node, &content);
if (error != DOM_NO_ERR) {
dom_string_unref(name);
return false;
}
if (content != NULL) {
char *rewritten;
unsigned long len;
/* Rewrite @import rules */
rewritten = save_complete_rewrite_stylesheet_urls(
ctx,
dom_string_data(content),
dom_string_byte_length(content),
ctx->base,
&len);
if (rewritten == NULL) {
dom_string_unref(content);
dom_string_unref(name);
return false;
}
dom_string_unref(content);
fwrite(rewritten, sizeof(*rewritten), len, ctx->fp);
free(rewritten);
}
ctx->iter_state = STATE_IN_STYLE;
} else if (event_type == EVENT_ENTER && name_len == SLEN("head") &&
strncasecmp(name_data, "head", name_len) == 0) {
/* If this is a HEAD element, insert a meta charset */
fputs("<META http-equiv=\"Content-Type\" "
"content=\"text/html; charset=utf-8\">",
ctx->fp);
}
dom_string_unref(name);
return true;
}
