From: Michael Orlitzky <michael@orlitzky.com>
Date: Tue, 17 Oct 2023 14:36:08 +0000 (-0400)
Subject: src/svgtiny_css.c: implement get_libcss_node_data() select handler
X-Git-Url: http://gitweb.michael.orlitzky.com/?a=commitdiff_plain;ds=sidebyside;h=533a56c316a8136b34180a1d62d5716024ddffda;p=libsvgtiny.git

src/svgtiny_css.c: implement get_libcss_node_data() select handler
---

diff --git a/src/svgtiny_css.c b/src/svgtiny_css.c
index ce31ef2..67f9fcd 100644
--- a/src/svgtiny_css.c
+++ b/src/svgtiny_css.c
@@ -61,6 +61,8 @@ static css_error ua_default_for_property(void *pw, uint32_t property,
 	css_hint *hint);
 static css_error set_libcss_node_data(void *pw, void *node,
 		void *libcss_node_data);
+static css_error get_libcss_node_data(void *pw, void *node,
+		void **libcss_node_data);
 
 
 /**
@@ -1825,3 +1827,33 @@ css_error set_libcss_node_data(void *pw, void *node,
 	/* dom_node_set_user_data() always returns DOM_NO_ERR */
 	return CSS_OK;
 }
+
+
+/**
+ * Retrieve libcss data from a node
+ *
+ * This is part of the libcss select handler API that we need to
+ * implement. It is essentially a thin dom_node_get_user_data()
+ * wrapper.
+ *
+ * \param pw                 Pointer to the current SVG parser state
+ * \param node               Libdom SVG node from which to get the data
+ * \param libcss_node_data   Address at which to store a pointer to the data
+ *
+ * \return Always returns CSS_OK
+ */
+css_error get_libcss_node_data(void *pw, void *node,
+		void **libcss_node_data)
+{
+	struct svgtiny_parse_state *state;
+
+	/* A unique "userdata key" (a string) is used to identify this
+	 * data. */
+	state = (struct svgtiny_parse_state *)pw;
+	dom_node_get_user_data((dom_node *)node,
+				state->interned_userdata_key,
+				libcss_node_data);
+
+	/* dom_node_get_user_data() always returns DOM_NO_ERR */
+	return CSS_OK;
+}