From: Michael Orlitzky <michael@orlitzky.com>
Date: Wed, 11 Oct 2023 19:17:08 +0000 (-0400)
Subject: src/svgtiny.c: parse inline stylesheet in svgtiny_parse_paint_attributes()
X-Git-Url: https://gitweb.michael.orlitzky.com/?a=commitdiff_plain;h=b94bca14bb7cd65bda2a92454a17a2e0d0b7234c;p=libsvgtiny.git

src/svgtiny.c: parse inline stylesheet in svgtiny_parse_paint_attributes()

...and do nothing with it, for the moment. We are able to parse the
inline style="..." attributes right now but more scaffolding is needed
before we can utilize css_select_style().
---

diff --git a/src/svgtiny.c b/src/svgtiny.c
index db0d59b..d16a761 100644
--- a/src/svgtiny.c
+++ b/src/svgtiny.c
@@ -2055,6 +2055,13 @@ void svgtiny_parse_paint_attributes(dom_element *node,
 	dom_string *attr;
 	dom_exception exc;
 
+	/* We store the result of svgtiny_parse_style_inline() in
+	 * inline_sheet, and that function returns NULL on error; in
+	 * particular you do not need to css_stylesheet_destroy() the
+	 * result if it is NULL. We initialize inline_sheet to NULL to
+	 * retain the same semantics. */
+	css_stylesheet *inline_sheet = NULL;
+
 	exc = dom_element_get_attribute(node, state->interned_fill, &attr);
 	if (exc == DOM_NO_ERR && attr != NULL) {
 		svgtiny_parse_color(attr, &state->fill, &state->fill_grad, state);
@@ -2076,6 +2083,14 @@ void svgtiny_parse_paint_attributes(dom_element *node,
 
 	exc = dom_element_get_attribute(node, state->interned_style, &attr);
 	if (exc == DOM_NO_ERR && attr != NULL) {
+		/* First parse the style attribute into a libcss stylesheet
+		   in case any of its properties are known to libcss. */
+		inline_sheet = svgtiny_parse_style_inline(
+					(uint8_t *)dom_string_data(attr),
+					dom_string_byte_length(attr));
+
+		/* Parse any other properties "by hand" until they can
+		   be supported in libcss. */
 		char *style = strndup(dom_string_data(attr),
 				      dom_string_byte_length(attr));
 		const char *s;
@@ -2108,6 +2123,10 @@ void svgtiny_parse_paint_attributes(dom_element *node,
 		free(style);
 		dom_string_unref(attr);
 	}
+
+	if (inline_sheet != NULL) {
+		css_stylesheet_destroy(inline_sheet);
+	}
 }