Index: trunk/src/route_style.c
===================================================================
--- trunk/src/route_style.c	(revision 2596)
+++ trunk/src/route_style.c	(revision 2597)
@@ -153,3 +153,22 @@
 	conf_set_design("design/via_drilling_hole", "%$mS", rst->Hole);
 	conf_set_design("design/clearance", "%$mS", rst->Clearance);
 }
+
+
+#define cmp(a,b) (((a) != 0) && ((a) == (b)))
+#define cmps(a,b) (((a) != NULL) && (strcmp((a), (b)) == 0))
+int pcb_route_style_lookup(vtroutestyle_t *styles, Coord Thick, Coord Diameter, Coord Hole, Coord Clearance, char *Name)
+{
+	int n;
+	for (n = 0; n < vtroutestyle_len(styles); n++) {
+		if (!cmp(Thick, styles->array[n].Thick)) continue;
+		if (!cmp(Diameter, styles->array[n].Diameter)) continue;
+		if (!cmp(Hole, styles->array[n].Hole)) continue;
+		if (!cmp(Clearance, styles->array[n].Clearance)) continue;
+		if (!cmps(Name, styles->array[n].name)) continue;
+		return n;
+	}
+	return -1;
+}
+#undef cmp
+
Index: trunk/src/route_style.h
===================================================================
--- trunk/src/route_style.h	(revision 2596)
+++ trunk/src/route_style.h	(revision 2597)
@@ -44,3 +44,8 @@
 
 /* Set design configuration (the pen we draw with) to a given route style */
 void pcb_use_route_style(RouteStyleType *);
+
+/* Compare supplied parameters to each style in the vector and return the index
+   of the first mathcing style. All non-0 parameters need to match to accept
+   a style. Return -1 on no match. */
+int pcb_route_style_lookup(vtroutestyle_t *styles, Coord Thick, Coord Diameter, Coord Hole, Coord Clearance, char *Name);