move html and text content handlers where they belong

1 files changed, 0 insertions, 713 deletions

diff --git a/render/html_css.c b/render/html_css.c
deleted file mode 100644
index 45bc16f56..000000000
--- a/render/html_css.c
+++ /dev/null
@@ -1,713 +0,0 @@
-/*
- * Copyright 2013 Vincent Sanders <vince@netsurf-browser.org>
- *
- * This file is part of NetSurf, http://www.netsurf-browser.org/
- *
- * NetSurf is free software; you can redistribute it and/or modify
- * it under the terms of the GNU General Public License as published by
- * the Free Software Foundation; version 2 of the License.
- *
- * NetSurf is distributed in the hope that it will be useful,
- * but WITHOUT ANY WARRANTY; without even the implied warranty of
- * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
- * GNU General Public License for more details.
- *
- * You should have received a copy of the GNU General Public License
- * along with this program.  If not, see <http://www.gnu.org/licenses/>.
- */
-
-/** \file
- * Processing for html content css operations.
- */
-
-#include <assert.h>
-#include <ctype.h>
-#include <stdint.h>
-#include <string.h>
-#include <strings.h>
-#include <stdlib.h>
-
-#include "utils/nsoption.h"
-#include "utils/corestrings.h"
-#include "utils/config.h"
-#include "utils/log.h"
-#include "netsurf/misc.h"
-#include "netsurf/content.h"
-#include "content/hlcache.h"
-#include "css/css.h"
-#include "desktop/gui_internal.h"
-
-#include "render/html_internal.h"
-
-static nsurl *html_default_stylesheet_url;
-static nsurl *html_adblock_stylesheet_url;
-static nsurl *html_quirks_stylesheet_url;
-static nsurl *html_user_stylesheet_url;
-
-static nserror css_error_to_nserror(css_error error)
-{
-	switch (error) {
-	case CSS_OK:
-		return NSERROR_OK;
-
-	case CSS_NOMEM:
-		return NSERROR_NOMEM;
-
-	case CSS_BADPARM:
-		return NSERROR_BAD_PARAMETER;
-
-	case CSS_INVALID:
-		return NSERROR_INVALID;
-
-	case CSS_FILENOTFOUND:
-		return NSERROR_NOT_FOUND;
-
-	case CSS_NEEDDATA:
-		return NSERROR_NEED_DATA;
-
-	case CSS_BADCHARSET:
-		return NSERROR_BAD_ENCODING;
-
-	case CSS_EOF:
-	case CSS_IMPORTS_PENDING:
-	case CSS_PROPERTY_NOT_SET:
-	default:
-		break;
-	}
-	return NSERROR_CSS;
-}
-
-/**
- * Callback for fetchcache() for stylesheets.
- */
-
-static nserror
-html_convert_css_callback(hlcache_handle *css,
-			  const hlcache_event *event,
-			  void *pw)
-{
-	html_content *parent = pw;
-	unsigned int i;
-	struct html_stylesheet *s;
-
-	/* Find sheet */
-	for (i = 0, s = parent->stylesheets;
-	     i != parent->stylesheet_count;
-	     i++, s++) {
-		if (s->sheet == css)
-			break;
-	}
-
-	assert(i != parent->stylesheet_count);
-
-	switch (event->type) {
-
-	case CONTENT_MSG_DONE:
-		NSLOG(netsurf, INFO, "done stylesheet slot %d '%s'", i,
-		      nsurl_access(hlcache_handle_get_url(css)));
-		parent->base.active--;
-		NSLOG(netsurf, INFO, "%d fetches active", parent->base.active);
-		break;
-
-	case CONTENT_MSG_ERROR:
-		NSLOG(netsurf, INFO, "stylesheet %s failed: %s",
-		      nsurl_access(hlcache_handle_get_url(css)),
-		      event->data.error);
-		/* fall through */
-
-	case CONTENT_MSG_ERRORCODE:
-		hlcache_handle_release(css);
-		s->sheet = NULL;
-		parent->base.active--;
-		NSLOG(netsurf, INFO, "%d fetches active", parent->base.active);
-		content_add_error(&parent->base, "?", 0);
-		break;
-
-	case CONTENT_MSG_POINTER:
-		/* Really don't want this to continue after the switch */
-		return NSERROR_OK;
-
-	default:
-		break;
-	}
-
-	if (html_can_begin_conversion(parent)) {
-		html_begin_conversion(parent);
-	}
-
-	return NSERROR_OK;
-}
-
-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)) {
-		NSLOG(netsurf, INFO, "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++;
-	NSLOG(netsurf, INFO, "%d fetches active", c->base.active);
-
-	return NSERROR_OK;
-}
-
-/**
- * Process an inline stylesheet in the document.
- *
- * \param  c      content structure
- * \param  style  xml node of style element
- * \return  true on success, false if an error occurred
- */
-
-static struct html_stylesheet *
-html_create_style_element(html_content *c, dom_node *style)
-{
-	dom_string *val;
-	dom_exception exc;
-	struct html_stylesheet *stylesheets;
-
-	/* type='text/css', or not present (invalid but common) */
-	exc = dom_element_get_attribute(style, corestring_dom_type, &val);
-	if (exc == DOM_NO_ERR && val != NULL) {
-		if (!dom_string_caseless_lwc_isequal(val,
-				corestring_lwc_text_css)) {
-			dom_string_unref(val);
-			return NULL;
-		}
-		dom_string_unref(val);
-	}
-
-	/* media contains 'screen' or 'all' or not present */
-	exc = dom_element_get_attribute(style, corestring_dom_media, &val);
-	if (exc == DOM_NO_ERR && val != NULL) {
-		if (strcasestr(dom_string_data(val), "screen") == NULL &&
-				strcasestr(dom_string_data(val),
-						"all") == NULL) {
-			dom_string_unref(val);
-			return NULL;
-		}
-		dom_string_unref(val);
-	}
-
-	/* Extend array */
-	stylesheets = realloc(c->stylesheets,
-			      sizeof(struct html_stylesheet) *
-			      (c->stylesheet_count + 1));
-	if (stylesheets == NULL) {
-
-		content_broadcast_errorcode(&c->base, NSERROR_NOMEM);
-		return false;
-
-	}
-	c->stylesheets = stylesheets;
-
-	c->stylesheets[c->stylesheet_count].node = dom_node_ref(style);
-	c->stylesheets[c->stylesheet_count].sheet = NULL;
-	c->stylesheets[c->stylesheet_count].modified = false;
-	c->stylesheets[c->stylesheet_count].unused = false;
-	c->stylesheet_count++;
-
-	return c->stylesheets + (c->stylesheet_count - 1);
-}
-
-static bool html_css_process_modified_style(html_content *c,
-		struct html_stylesheet *s)
-{
-	hlcache_handle *sheet = NULL;
-	nserror error;
-
-	error = html_stylesheet_from_domnode(c, s->node, &sheet);
-	if (error != NSERROR_OK) {
-		NSLOG(netsurf, INFO, "Failed to update sheet");
-		content_broadcast_errorcode(&c->base, error);
-		return false;
-	}
-
-	if (sheet != NULL) {
-		NSLOG(netsurf, INFO, "Updating sheet %p with %p", s->sheet,
-		      sheet);
-
-		if (s->sheet != NULL) {
-			switch (content_get_status(s->sheet)) {
-			case CONTENT_STATUS_DONE:
-				break;
-			default:
-				hlcache_handle_abort(s->sheet);
-				c->base.active--;
-				NSLOG(netsurf, INFO, "%d fetches active",
-				      c->base.active);
-			}
-			hlcache_handle_release(s->sheet);
-		}
-		s->sheet = sheet;
-	}
-
-	s->modified = false;
-
-	return true;
-}
-
-static void html_css_process_modified_styles(void *pw)
-{
-	html_content *c = pw;
-	struct html_stylesheet *s;
-	unsigned int i;
-	bool all_done = true;
-
-	for (i = 0, s = c->stylesheets; i != c->stylesheet_count; i++, s++) {
-		if (c->stylesheets[i].modified) {
-			all_done &= html_css_process_modified_style(c, s);
-		}
-	}
-
-	/* If we failed to process any sheet, schedule a retry */
-	if (all_done == false) {
-		guit->misc->schedule(1000, html_css_process_modified_styles, c);
-	}
-}
-
-bool html_css_update_style(html_content *c, dom_node *style)
-{
-	unsigned int i;
-	struct html_stylesheet *s;
-
-	/* Find sheet */
-	for (i = 0, s = c->stylesheets;	i != c->stylesheet_count; i++, s++) {
-		if (s->node == style)
-			break;
-	}
-	if (i == c->stylesheet_count) {
-		s = html_create_style_element(c, style);
-	}
-	if (s == NULL) {
-		NSLOG(netsurf, INFO,
-		      "Could not find or create inline stylesheet for %p",
-		      style);
-		return false;
-	}
-
-	s->modified = true;
-
-	guit->misc->schedule(0, html_css_process_modified_styles, c);
-
-	return true;
-}
-
-bool html_css_process_style(html_content *c, dom_node *node)
-{
-	unsigned int i;
-	dom_string *val;
-	dom_exception exc;
-	struct html_stylesheet *s;
-
-	/* Find sheet */
-	for (i = 0, s = c->stylesheets;	i != c->stylesheet_count; i++, s++) {
-		if (s->node == node)
-			break;
-	}
-
-		/* Should already exist */
-	if (i == c->stylesheet_count) {
-		return false;
-	}
-
-	exc = dom_element_get_attribute(node, corestring_dom_media, &val);
-	if (exc == DOM_NO_ERR && val != NULL) {
-		if (strcasestr(dom_string_data(val), "screen") == NULL &&
-				strcasestr(dom_string_data(val),
-						"all") == NULL) {
-			s->unused = true;
-		}
-		dom_string_unref(val);
-	}
-
-	return true;
-}
-
-bool html_css_process_link(html_content *htmlc, dom_node *node)
-{
-	dom_string *rel, *type_attr, *media, *href;
-	struct html_stylesheet *stylesheets;
-	nsurl *joined;
-	dom_exception exc;
-	nserror ns_error;
-	hlcache_child_context child;
-
-	/* rel=<space separated list, including 'stylesheet'> */
-	exc = dom_element_get_attribute(node, corestring_dom_rel, &rel);
-	if (exc != DOM_NO_ERR || rel == NULL)
-		return true;
-
-	if (strcasestr(dom_string_data(rel), "stylesheet") == 0) {
-		dom_string_unref(rel);
-		return true;
-	} else if (strcasestr(dom_string_data(rel), "alternate") != 0) {
-		/* Ignore alternate stylesheets */
-		dom_string_unref(rel);
-		return true;
-	}
-	dom_string_unref(rel);
-
-	/* type='text/css' or not present */
-	exc = dom_element_get_attribute(node, corestring_dom_type, &type_attr);
-	if (exc == DOM_NO_ERR && type_attr != NULL) {
-		if (!dom_string_caseless_lwc_isequal(type_attr,
-				corestring_lwc_text_css)) {
-			dom_string_unref(type_attr);
-			return true;
-		}
-		dom_string_unref(type_attr);
-	}
-
-	/* media contains 'screen' or 'all' or not present */
-	exc = dom_element_get_attribute(node, corestring_dom_media, &media);
-	if (exc == DOM_NO_ERR && media != NULL) {
-		if (strcasestr(dom_string_data(media), "screen") == NULL &&
-		    strcasestr(dom_string_data(media), "all") == NULL) {
-			dom_string_unref(media);
-			return true;
-		}
-		dom_string_unref(media);
-	}
-
-	/* href='...' */
-	exc = dom_element_get_attribute(node, corestring_dom_href, &href);
-	if (exc != DOM_NO_ERR || href == NULL)
-		return true;
-
-	/* TODO: only the first preferred stylesheets (ie.
-	 * those with a title attribute) should be loaded
-	 * (see HTML4 14.3) */
-
-	ns_error = nsurl_join(htmlc->base_url, dom_string_data(href), &joined);
-	if (ns_error != NSERROR_OK) {
-		dom_string_unref(href);
-		goto no_memory;
-	}
-	dom_string_unref(href);
-
-	NSLOG(netsurf, INFO, "linked stylesheet %i '%s'",
-	      htmlc->stylesheet_count, nsurl_access(joined));
-
-	/* extend stylesheets array to allow for new sheet */
-	stylesheets = realloc(htmlc->stylesheets,
-			      sizeof(struct html_stylesheet) *
-			      (htmlc->stylesheet_count + 1));
-	if (stylesheets == NULL) {
-		nsurl_unref(joined);
-		ns_error = NSERROR_NOMEM;
-		goto no_memory;
-	}
-
-	htmlc->stylesheets = stylesheets;
-	htmlc->stylesheets[htmlc->stylesheet_count].node = NULL;
-	htmlc->stylesheets[htmlc->stylesheet_count].modified = false;
-	htmlc->stylesheets[htmlc->stylesheet_count].unused = false;
-
-	/* start fetch */
-	child.charset = htmlc->encoding;
-	child.quirks = htmlc->base.quirks;
-
-	ns_error = hlcache_handle_retrieve(joined, 0,
-			content_get_url(&htmlc->base),
-			NULL, html_convert_css_callback,
-			htmlc, &child, CONTENT_CSS,
-			&htmlc->stylesheets[htmlc->stylesheet_count].sheet);
-
-	nsurl_unref(joined);
-
-	if (ns_error != NSERROR_OK)
-		goto no_memory;
-
-	htmlc->stylesheet_count++;
-
-	htmlc->base.active++;
-	NSLOG(netsurf, INFO, "%d fetches active", htmlc->base.active);
-
-	return true;
-
-no_memory:
-	content_broadcast_errorcode(&htmlc->base, ns_error);
-	return false;
-}
-
-/* exported interface documented in render/html.h */
-struct html_stylesheet *html_get_stylesheets(hlcache_handle *h, unsigned int *n)
-{
-	html_content *c = (html_content *) hlcache_handle_get_content(h);
-
-	assert(c != NULL);
-	assert(n != NULL);
-
-	*n = c->stylesheet_count;
-
-	return c->stylesheets;
-}
-
-
-/* exported interface documented in render/html_internal.h */
-nserror html_css_free_stylesheets(html_content *html)
-{
-	unsigned int i;
-
-	guit->misc->schedule(-1, html_css_process_modified_styles, html);
-
-	for (i = 0; i != html->stylesheet_count; i++) {
-		if (html->stylesheets[i].sheet != NULL) {
-			hlcache_handle_release(html->stylesheets[i].sheet);
-		}
-		if (html->stylesheets[i].node != NULL) {
-			dom_node_unref(html->stylesheets[i].node);
-		}
-	}
-	free(html->stylesheets);
-
-	return NSERROR_OK;
-}
-
-/* exported interface documented in render/html_internal.h */
-nserror html_css_quirks_stylesheets(html_content *c)
-{
-	nserror ns_error = NSERROR_OK;
-	hlcache_child_context child;
-
-	assert(c->stylesheets != NULL);
-
-	if (c->quirks == DOM_DOCUMENT_QUIRKS_MODE_FULL) {
-		child.charset = c->encoding;
-		child.quirks = c->base.quirks;
-
-		ns_error = hlcache_handle_retrieve(html_quirks_stylesheet_url,
-				0, content_get_url(&c->base), NULL,
-				html_convert_css_callback, c, &child,
-				CONTENT_CSS,
-				&c->stylesheets[STYLESHEET_QUIRKS].sheet);
-		if (ns_error != NSERROR_OK) {
-			return ns_error;
-		}
-
-		c->base.active++;
-		NSLOG(netsurf, INFO, "%d fetches active", c->base.active);
-	}
-
-	return ns_error;
-}
-
-/* exported interface documented in render/html_internal.h */
-nserror html_css_new_stylesheets(html_content *c)
-{
-	nserror ns_error;
-	hlcache_child_context child;
-
-	if (c->stylesheets != NULL) {
-		return NSERROR_OK; /* already initialised */
-	}
-
-	/* stylesheet 0 is the base style sheet,
-	 * stylesheet 1 is the quirks mode style sheet,
-	 * stylesheet 2 is the adblocking stylesheet,
-	 * stylesheet 3 is the user stylesheet */
-	c->stylesheets = calloc(STYLESHEET_START,
-			sizeof(struct html_stylesheet));
-	if (c->stylesheets == NULL) {
-		return NSERROR_NOMEM;
-	}
-
-	c->stylesheets[STYLESHEET_BASE].sheet = NULL;
-	c->stylesheets[STYLESHEET_QUIRKS].sheet = NULL;
-	c->stylesheets[STYLESHEET_ADBLOCK].sheet = NULL;
-	c->stylesheets[STYLESHEET_USER].sheet = NULL;
-	c->stylesheet_count = STYLESHEET_START;
-
-	child.charset = c->encoding;
-	child.quirks = c->base.quirks;
-
-	ns_error = hlcache_handle_retrieve(html_default_stylesheet_url, 0,
-			content_get_url(&c->base), NULL,
-			html_convert_css_callback, c, &child, CONTENT_CSS,
-			&c->stylesheets[STYLESHEET_BASE].sheet);
-	if (ns_error != NSERROR_OK) {
-		return ns_error;
-	}
-
-	c->base.active++;
-	NSLOG(netsurf, INFO, "%d fetches active", c->base.active);
-
-
-	if (nsoption_bool(block_advertisements)) {
-		ns_error = hlcache_handle_retrieve(html_adblock_stylesheet_url,
-				0, content_get_url(&c->base), NULL,
-				html_convert_css_callback,
-				c, &child, CONTENT_CSS,
-				&c->stylesheets[STYLESHEET_ADBLOCK].sheet);
-		if (ns_error != NSERROR_OK) {
-			return ns_error;
-		}
-
-		c->base.active++;
-		NSLOG(netsurf, INFO, "%d fetches active", c->base.active);
-
-	}
-
-	ns_error = hlcache_handle_retrieve(html_user_stylesheet_url, 0,
-			content_get_url(&c->base), NULL,
-			html_convert_css_callback, c, &child, CONTENT_CSS,
-			&c->stylesheets[STYLESHEET_USER].sheet);
-	if (ns_error != NSERROR_OK) {
-		return ns_error;
-	}
-
-	c->base.active++;
-	NSLOG(netsurf, INFO, "%d fetches active", c->base.active);
-
-	return ns_error;
-}
-
-nserror
-html_css_new_selection_context(html_content *c, css_select_ctx **ret_select_ctx)
-{
-	uint32_t i;
-	css_error css_ret;
-	css_select_ctx *select_ctx;
-
-	/* check that the base stylesheet loaded; layout fails without it */
-	if (c->stylesheets[STYLESHEET_BASE].sheet == NULL) {
-		return NSERROR_CSS_BASE;
-	}
-
-	/* Create selection context */
-	css_ret = css_select_ctx_create(&select_ctx);
-	if (css_ret != CSS_OK) {
-		return css_error_to_nserror(css_ret);
-	}
-
-	/* Add sheets to it */
-	for (i = STYLESHEET_BASE; i != c->stylesheet_count; i++) {
-		const struct html_stylesheet *hsheet = &c->stylesheets[i];
-		css_stylesheet *sheet = NULL;
-		css_origin origin = CSS_ORIGIN_AUTHOR;
-
-		/* Filter out stylesheets for non-screen media. */
-		if (hsheet->unused) {
-			continue;
-		}
-
-		if (i < STYLESHEET_USER) {
-			origin = CSS_ORIGIN_UA;
-		} else if (i < STYLESHEET_START) {
-			origin = CSS_ORIGIN_USER;
-		}
-
-		if (hsheet->sheet != NULL) {
-			sheet = nscss_get_stylesheet(hsheet->sheet);
-		}
-
-		if (sheet != NULL) {
-			css_ret = css_select_ctx_append_sheet(select_ctx,
-							      sheet,
-							      origin,
-							      CSS_MEDIA_SCREEN);
-			if (css_ret != CSS_OK) {
-				css_select_ctx_destroy(select_ctx);
-				return css_error_to_nserror(css_ret);
-			}
-		}
-	}
-
-	/* return new selection context to caller */
-	*ret_select_ctx = select_ctx;
-	return NSERROR_OK;
-}
-
-nserror html_css_init(void)
-{
-	nserror error;
-
-	error = html_css_fetcher_register();
-	if (error != NSERROR_OK)
-		return error;
-
-	error = nsurl_create("resource:default.css",
-			&html_default_stylesheet_url);
-	if (error != NSERROR_OK)
-		return error;
-
-	error = nsurl_create("resource:adblock.css",
-			&html_adblock_stylesheet_url);
-	if (error != NSERROR_OK)
-		return error;
-
-	error = nsurl_create("resource:quirks.css",
-			&html_quirks_stylesheet_url);
-	if (error != NSERROR_OK)
-		return error;
-
-	error = nsurl_create("resource:user.css",
-			&html_user_stylesheet_url);
-
-	return error;
-}
-
-void html_css_fini(void)
-{
-	if (html_user_stylesheet_url != NULL) {
-		nsurl_unref(html_user_stylesheet_url);
-		html_user_stylesheet_url = NULL;
-	}
-
-	if (html_quirks_stylesheet_url != NULL) {
-		nsurl_unref(html_quirks_stylesheet_url);
-		html_quirks_stylesheet_url = NULL;
-	}
-
-	if (html_adblock_stylesheet_url != NULL) {
-		nsurl_unref(html_adblock_stylesheet_url);
-		html_adblock_stylesheet_url = NULL;
-	}
-
-	if (html_default_stylesheet_url != NULL) {
-		nsurl_unref(html_default_stylesheet_url);
-		html_default_stylesheet_url = NULL;
-	}
-}