X-Git-Url: https://gitweb.michael.orlitzky.com/?a=blobdiff_plain;f=src%2Fsvgtiny_css.c;h=6d345a753dacf4764cb3353ce983a1a8e651241c;hb=49fb0b4d04ca7e1bfb54a1021e469ed7ef7bf3f5;hp=c7faffddef88e447fc1618805cbb450050ff955a;hpb=99489346fc8214d7c9473b89361b0c8d17b985db;p=libsvgtiny.git

diff --git a/src/svgtiny_css.c b/src/svgtiny_css.c
index c7faffd..6d345a7 100644
--- a/src/svgtiny_css.c
+++ b/src/svgtiny_css.c
@@ -15,6 +15,10 @@ static css_error named_generic_sibling_node(void *pw, void *node,
 		const css_qname *qname, void **sibling);
 static css_error parent_node(void *pw, void *node, void **parent);
 static css_error sibling_node(void *pw, void *node, void **sibling);
+static css_error node_has_name(void *pw, void *node,
+		const css_qname *qname, bool *match);
+static css_error node_has_class(void *pw, void *node,
+		lwc_string *name, bool *match);
 
 
 /**
@@ -504,3 +508,75 @@ css_error sibling_node(void *pw, void *node, void **sibling)
 
 	return CSS_OK;
 }
+
+
+/**
+ * Test the given node for the given name
+ *
+ * This will return true (via the "match" pointer) if the libdom node
+ * has the given name or if that name is the universal selector;
+ * otherwise it returns false. The comparison is case-sensitive. It
+ * corresponds to a rule like "body { ... }" in CSS.
+ *
+ * \param pw       Pointer to the current SVG parser state
+ * \param node     Libdom SVG node to test
+ * \param qname    Name to check for
+ * \param match    Pointer to the test result
+ *
+ * \return Always returns CSS_OK
+ */
+css_error node_has_name(void *pw, void *node,
+		const css_qname *qname, bool *match)
+{
+	struct svgtiny_parse_state *state;
+	dom_string *name;
+	dom_exception err;
+
+	/* Start by checking to see if qname is the universal selector */
+	state = (struct svgtiny_parse_state *)pw;
+	if (lwc_string_isequal(qname->name,
+			state->interned_universal, match) == lwc_error_ok) {
+	  if (*match) {
+		/* It's the universal selector. In NetSurf, all node
+		 * names match the universal selector, and nothing in
+		 * the libcss documentation suggests another approach,
+		 * so we follow NetSurf here. */
+		return CSS_OK;
+	  }
+	}
+
+	err = dom_node_get_node_name((dom_node *)node, &name);
+	if (err != DOM_NO_ERR) {
+	  return CSS_OK;
+	}
+
+	/* Unlike with HTML, SVG element names are case-sensitive */
+	*match = dom_string_lwc_isequal(name, qname->name);
+	dom_string_unref(name);
+
+	return CSS_OK;
+}
+
+
+/**
+ * Test the given node for the given class
+ *
+ * This will return true (via the "match" pointer) if the libdom node
+ * has the given class. The comparison is case-sensitive. It
+ * corresponds to node.class in CSS.
+ *
+ * \param pw       Pointer to the current SVG parser state
+ * \param node     Libdom SVG node to test
+ * \param name     Class name to check for
+ * \param match    Pointer to the test result
+ *
+ * \return Always returns CSS_OK
+ */
+css_error node_has_class(void *pw, void *node,
+		lwc_string *name, bool *match)
+{
+	UNUSED(pw);
+	/* libdom implements this for us and apparently it cannot fail */
+	dom_element_has_class((dom_node *)node, name, match);
+	return CSS_OK;
+}