From 3e5238db0f40672c24530f2443f834c3f7b7ca1a Mon Sep 17 00:00:00 2001
From: Michael Orlitzky <michael@orlitzky.com>
Date: Tue, 3 Oct 2023 22:51:38 -0400
Subject: [PATCH] src/svgtiny_internal.h: add CSS context to parser state

Add a css_select_ctx pointer to the svgtiny_parse_state that is
threaded through each phase of SVG parsing. This will allow us to
populate the context with any <style> sheets we find; later, we can
consult those stylesheets while constructing our svgtiny_diagram (the
abstract representation into which we parse an SVG).
---
 src/svgtiny_internal.h | 8 ++++++++
 1 file changed, 8 insertions(+)

diff --git a/src/svgtiny_internal.h b/src/svgtiny_internal.h
index 133513c..7480f23 100644
--- a/src/svgtiny_internal.h
+++ b/src/svgtiny_internal.h
@@ -11,6 +11,7 @@
 #include <stdbool.h>
 
 #include <dom/dom.h>
+#include <libcss/libcss.h>
 
 #ifndef UNUSED
 #define UNUSED(x) ((void) (x))
@@ -46,6 +47,13 @@ struct svgtiny_parse_state {
 		float a, b, c, d, e, f;
 	} ctm;
 
+	/* A libcss context to hold any stylesheets that are present
+	 * in the SVG document. This should be pre-populated rather
+	 * than on-the-fly, because, for example, a <style> sheet at
+	 * the end of the document should affect the SVG elements that
+	 * precede it. */
+	css_select_ctx *select_ctx;
+
 	/* paint attributes */
 	svgtiny_colour fill;
 	svgtiny_colour stroke;
-- 
2.44.2