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authorJames Bursa <james@netsurf-browser.org>2007-10-02 04:48:30 +0000
committerJames Bursa <james@netsurf-browser.org>2007-10-02 04:48:30 +0000
commitdb7a0824d343af80cfadf946d5c63365d731b346 (patch)
treead7f51afc6c6cae709deeae42ec206be81cf9f64
parentca50ffb53cd9e93960246a4bde0ee2d7bb68d4df (diff)
downloadnetsurf-db7a0824d343af80cfadf946d5c63365d731b346.tar.gz
netsurf-db7a0824d343af80cfadf946d5c63365d731b346.tar.bz2
Process inline stylesheets anywhere in document, not just in <head>.
svn path=/trunk/netsurf/; revision=3615
Diffstat
-rw-r--r--render/html.c300
1 files changed, 185 insertions, 115 deletions
diff --git a/render/html.c b/render/html.c
index 8ed3517e4..1068319e3 100644
--- a/render/html.c
+++ b/render/html.c
@@ -54,7 +54,10 @@ static void html_convert_css_callback(content_msg msg, struct content *css,
intptr_t p1, intptr_t p2, union content_msg_data data);
static bool html_meta_refresh(struct content *c, xmlNode *head);
static bool html_head(struct content *c, xmlNode *head);
-static bool html_find_stylesheets(struct content *c, xmlNode *head);
+static bool html_find_stylesheets(struct content *c, xmlNode *html,
+ xmlNode *head);
+static bool html_find_inline_stylesheets(struct content *c, xmlNode *html);
+static bool html_process_style_element(struct content *c, xmlNode *style);
static void html_object_callback(content_msg msg, struct content *object,
intptr_t p1, intptr_t p2, union content_msg_data data);
static void html_object_done(struct box *box, struct content *object,
@@ -453,7 +456,7 @@ bool html_convert(struct content *c, int width, int height)
}
/* get stylesheets */
- if (!html_find_stylesheets(c, head))
+ if (!html_find_stylesheets(c, html, head))
return false;
/* convert xml tree to box tree */
@@ -699,14 +702,16 @@ bool html_meta_refresh(struct content *c, xmlNode *head)
* Process inline stylesheets and fetch linked stylesheets.
*
* \param c content structure
+ * \param head xml node of html element
* \param head xml node of head element, or 0 if none
* \return true on success, false if an error occurred
*/
-bool html_find_stylesheets(struct content *c, xmlNode *head)
+bool html_find_stylesheets(struct content *c, xmlNode *html,
+ xmlNode *head)
{
- xmlNode *node, *node2;
- char *rel, *type, *media, *href, *data, *url;
+ xmlNode *node;
+ char *rel, *type, *media, *href, *url;
unsigned int i = STYLESHEET_START;
unsigned int last_active = 0;
union content_msg_data msg_data;
@@ -759,132 +764,83 @@ bool html_find_stylesheets(struct content *c, xmlNode *head)
if (node->type != XML_ELEMENT_NODE)
continue;
- if (strcmp(node->name, "link") == 0) {
- /* rel=<space separated list, including 'stylesheet'> */
- if ((rel = (char *) xmlGetProp(node, (const xmlChar *) "rel")) == NULL)
- continue;
- if (strcasestr(rel, "stylesheet") == 0) {
- xmlFree(rel);
- continue;
- } else if (strcasestr(rel, "alternate")) {
- /* Ignore alternate stylesheets */
- xmlFree(rel);
- continue;
- }
+ if (strcmp(node->name, "link") != 0)
+ continue;
+
+ /* rel=<space separated list, including 'stylesheet'> */
+ if ((rel = (char *) xmlGetProp(node, (const xmlChar *) "rel")) == NULL)
+ continue;
+ if (strcasestr(rel, "stylesheet") == 0) {
+ xmlFree(rel);
+ continue;
+ } else if (strcasestr(rel, "alternate")) {
+ /* Ignore alternate stylesheets */
xmlFree(rel);
+ continue;
+ }
+ xmlFree(rel);
- /* type='text/css' or not present */
- if ((type = (char *) xmlGetProp(node, (const xmlChar *) "type")) != NULL) {
- if (strcmp(type, "text/css") != 0) {
- xmlFree(type);
- continue;
- }
+ /* type='text/css' or not present */
+ if ((type = (char *) xmlGetProp(node, (const xmlChar *) "type")) != NULL) {
+ if (strcmp(type, "text/css") != 0) {
xmlFree(type);
+ continue;
}
+ xmlFree(type);
+ }
- /* media contains 'screen' or 'all' or not present */
- if ((media = (char *) xmlGetProp(node, (const xmlChar *) "media")) != NULL) {
- if (strcasestr(media, "screen") == 0 &&
- strcasestr(media, "all") == 0) {
- xmlFree(media);
- continue;
- }
+ /* media contains 'screen' or 'all' or not present */
+ if ((media = (char *) xmlGetProp(node, (const xmlChar *) "media")) != NULL) {
+ if (strcasestr(media, "screen") == 0 &&
+ strcasestr(media, "all") == 0) {
xmlFree(media);
- }
-
- /* href='...' */
- if ((href = (char *) xmlGetProp(node, (const xmlChar *) "href")) == NULL)
- continue;
-
- /* TODO: only the first preferred stylesheets (ie. those with a
- * title attribute) should be loaded (see HTML4 14.3) */
-
- res = url_join(href, c->data.html.base_url, &url);
- xmlFree(href);
- if (res != URL_FUNC_OK)
continue;
+ }
+ xmlFree(media);
+ }
- LOG(("linked stylesheet %i '%s'", i, url));
+ /* href='...' */
+ if ((href = (char *) xmlGetProp(node, (const xmlChar *) "href")) == NULL)
+ continue;
- /* start fetch */
- stylesheet_content = talloc_realloc(c,
- c->data.html.stylesheet_content,
- struct content *, i + 1);
- if (!stylesheet_content)
- goto no_memory;
- c->data.html.stylesheet_content = stylesheet_content;
- c->data.html.stylesheet_content[i] = fetchcache(url,
- html_convert_css_callback,
- (intptr_t) c, i, c->width, c->height,
- true, 0, 0, false, false);
- if (!c->data.html.stylesheet_content[i])
- goto no_memory;
- c->active++;
- fetchcache_go(c->data.html.stylesheet_content[i],
- c->url,
- html_convert_css_callback,
- (intptr_t) c, i, c->width, c->height,
- 0, 0, false, c->url);
- free(url);
- i++;
-
- } else if (strcmp(node->name, "style") == 0) {
- /* type='text/css', or not present (invalid but common) */
- if ((type = (char *) xmlGetProp(node, (const xmlChar *) "type")) != NULL) {
- if (strcmp(type, "text/css") != 0) {
- xmlFree(type);
- continue;
- }
- xmlFree(type);
- }
+ /* TODO: only the first preferred stylesheets (ie. those with a
+ * title attribute) should be loaded (see HTML4 14.3) */
- /* media contains 'screen' or 'all' or not present */
- if ((media = (char *) xmlGetProp(node, (const xmlChar *) "media")) != NULL) {
- if (strcasestr(media, "screen") == 0 &&
- strcasestr(media, "all") == 0) {
- xmlFree(media);
- continue;
- }
- xmlFree(media);
- }
+ res = url_join(href, c->data.html.base_url, &url);
+ xmlFree(href);
+ if (res != URL_FUNC_OK)
+ continue;
- /* create stylesheet */
- LOG(("style element"));
- if (c->data.html.stylesheet_content[STYLESHEET_STYLE] == 0) {
- const char *params[] = { 0 };
- c->data.html.stylesheet_content[STYLESHEET_STYLE] =
- content_create(c->data.html.
- base_url);
- if (!c->data.html.stylesheet_content[STYLESHEET_STYLE])
- goto no_memory;
- if (!content_set_type(c->data.html.
- stylesheet_content[STYLESHEET_STYLE],
- CONTENT_CSS, "text/css",
- params))
- /** \todo not necessarily caused by
- * memory exhaustion */
- goto no_memory;
- }
+ LOG(("linked stylesheet %i '%s'", i, url));
- /* can't just use xmlNodeGetContent(node), because that won't give
- * the content of comments which may be used to 'hide' the content */
- for (node2 = node->children; node2 != 0; node2 = node2->next) {
- data = xmlNodeGetContent(node2);
- if (!content_process_data(c->data.html.
- stylesheet_content[STYLESHEET_STYLE],
- data, strlen(data))) {
- xmlFree(data);
- /** \todo not necessarily caused by
- * memory exhaustion */
- goto no_memory;
- }
- xmlFree(data);
- }
- }
+ /* start fetch */
+ stylesheet_content = talloc_realloc(c,
+ c->data.html.stylesheet_content,
+ struct content *, i + 1);
+ if (!stylesheet_content)
+ goto no_memory;
+ c->data.html.stylesheet_content = stylesheet_content;
+ c->data.html.stylesheet_content[i] = fetchcache(url,
+ html_convert_css_callback,
+ (intptr_t) c, i, c->width, c->height,
+ true, 0, 0, false, false);
+ if (!c->data.html.stylesheet_content[i])
+ goto no_memory;
+ c->active++;
+ fetchcache_go(c->data.html.stylesheet_content[i],
+ c->url,
+ html_convert_css_callback,
+ (intptr_t) c, i, c->width, c->height,
+ 0, 0, false, c->url);
+ free(url);
+ i++;
}
c->data.html.stylesheet_count = i;
+ if (!html_find_inline_stylesheets(c, html))
+ return false;
+
if (c->data.html.stylesheet_content[STYLESHEET_STYLE] != 0) {
if (css_convert(c->data.html.stylesheet_content[STYLESHEET_STYLE], c->width,
c->height)) {
@@ -952,6 +908,120 @@ no_memory:
/**
+ * Process inline stylesheets in the document.
+ *
+ * \param c content structure
+ * \param head xml node of html element
+ * \return true on success, false if an error occurred
+ */
+
+bool html_find_inline_stylesheets(struct content *c, xmlNode *html)
+{
+ xmlNode *node = html;
+
+ /* depth-first search the tree for style elements */
+ while (node) {
+ if (node->children) { /* 1. children */
+ node = node->children;
+ } else if (node->next) { /* 2. siblings */
+ node = node->next;
+ } else { /* 3. ancestor siblings */
+ while (node && !node->next)
+ node = node->parent;
+ if (!node)
+ break;
+ node = node->next;
+ }
+
+ assert(node);
+
+ if (node->type != XML_ELEMENT_NODE)
+ continue;
+ if (strcmp(node->name, "style") != 0)
+ continue;
+
+ if (!html_process_style_element(c, node))
+ return false;
+ }
+
+ return true;
+}
+
+
+/**
+ * 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
+ */
+
+bool html_process_style_element(struct content *c, xmlNode *style)
+{
+ xmlNode *child;
+ char *type, *media, *data;
+ union content_msg_data msg_data;
+
+ /* type='text/css', or not present (invalid but common) */
+ if ((type = (char *) xmlGetProp(style, (const xmlChar *) "type"))) {
+ if (strcmp(type, "text/css") != 0) {
+ xmlFree(type);
+ return true;
+ }
+ xmlFree(type);
+ }
+
+ /* media contains 'screen' or 'all' or not present */
+ if ((media = (char *) xmlGetProp(style, (const xmlChar *) "media"))) {
+ if (strcasestr(media, "screen") == 0 &&
+ strcasestr(media, "all") == 0) {
+ xmlFree(media);
+ return true;
+ }
+ xmlFree(media);
+ }
+
+ /* create stylesheet */
+ if (c->data.html.stylesheet_content[STYLESHEET_STYLE] == 0) {
+ const char *params[] = { 0 };
+ c->data.html.stylesheet_content[STYLESHEET_STYLE] =
+ content_create(c->data.html.base_url);
+ if (!c->data.html.stylesheet_content[STYLESHEET_STYLE])
+ goto no_memory;
+ if (!content_set_type(c->data.html.
+ stylesheet_content[STYLESHEET_STYLE],
+ CONTENT_CSS, "text/css", params))
+ /** \todo not necessarily caused by
+ * memory exhaustion */
+ goto no_memory;
+ }
+
+ /* can't just use xmlNodeGetContent(style), because that won't
+ * give the content of comments which may be used to 'hide'
+ * the content */
+ for (child = style->children; child != 0; child = child->next) {
+ data = xmlNodeGetContent(child);
+ if (!content_process_data(c->data.html.
+ stylesheet_content[STYLESHEET_STYLE],
+ data, strlen(data))) {
+ xmlFree(data);
+ /** \todo not necessarily caused by
+ * memory exhaustion */
+ goto no_memory;
+ }
+ xmlFree(data);
+ }
+
+ return true;
+
+no_memory:
+ msg_data.error = messages_get("NoMemory");
+ content_broadcast(c, CONTENT_MSG_ERROR, msg_data);
+ return false;
+}
+
+
+/**
* Callback for fetchcache() for linked stylesheets.
*/
generated by cgit v1.2.3 (git 2.39.1) at 2024-04-23 16:17:56 +0000