X-Git-Url: https://gitweb.michael.orlitzky.com/?a=blobdiff_plain;f=src%2Fsvgtiny_css.c;h=66ccd01d97a30eebc9d3bc3533be8770646d88dd;hb=dcb751a0f526be0332041fb4634974b1325686e9;hp=6d345a753dacf4764cb3353ce983a1a8e651241c;hpb=49fb0b4d04ca7e1bfb54a1021e469ed7ef7bf3f5;p=libsvgtiny.git

diff --git a/src/svgtiny_css.c b/src/svgtiny_css.c
index 6d345a7..66ccd01 100644
--- a/src/svgtiny_css.c
+++ b/src/svgtiny_css.c
@@ -19,6 +19,8 @@ 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);
+static css_error node_has_id(void *pw, void *node,
+		lwc_string *name, bool *match);
 
 
 /**
@@ -580,3 +582,41 @@ css_error node_has_class(void *pw, void *node,
 	dom_element_has_class((dom_node *)node, name, match);
 	return CSS_OK;
 }
+
+
+/**
+ * Test the given node for the given id
+ *
+ * This will return true (via the "match" pointer) if the libdom node
+ * has the given id. The comparison is case-sensitive. It corresponds
+ * to node#id in CSS.
+ *
+ * \param pw       Pointer to the current SVG parser state
+ * \param node     Libdom SVG node to test
+ * \param name     Id to check for
+ * \param match    Pointer to the test result
+ *
+ * \return Always returns CSS_OK
+ */
+css_error node_has_id(void *pw, void *node,
+		lwc_string *name, bool *match)
+{
+	dom_string *attr;
+	dom_exception err;
+	struct svgtiny_parse_state *state;
+
+	attr = NULL;    /* a priori the "id" attribute may not exist */
+	*match = false; /* default to no match */
+
+	state = (struct svgtiny_parse_state *)pw;
+	err = dom_element_get_attribute((dom_node *)node,
+				state->interned_id, &attr);
+	if (err != DOM_NO_ERR || attr == NULL) {
+		return CSS_OK;
+	}
+
+	*match = dom_string_lwc_isequal(attr, name);
+	dom_string_unref(attr);
+
+	return CSS_OK;
+}