extract rc_mask, add it to exparse code.

src/kernel/race.c

@@ -574,3 +574,20 @@ struct race * read_race_reference(struct storage *store)
 void register_race_function(race_func func, const char *name) {
     register_function((pf_generic)func, name);
 }
+
+static int race_mask = 1;
+
+int rc_mask(char *list) {
+    int mask = 0;
+    char * tok = strtok(list, " ,");
+    while (tok) {
+        race * rc = rc_get_or_create(tok);
+        if (!rc->mask_item) {
+            rc->mask_item = race_mask;
+            race_mask = race_mask << 1;
+        }
+        mask |= rc->mask_item;
+        tok = strtok(NULL, " ,");
+    }
+    return mask;
+}

src/kernel/race.h

@@ -198,6 +198,8 @@ extern "C" {
 #define MIGRANTS_LOG10 1
     int rc_migrants_formula(const race *rc);
     
+    int rc_mask(char *list);
+
     /* Flags. Do not reorder these without changing json_race() in jsonconf.c */
 #define RCF_NPC            (1<<0)   /* cannot be the race for a player faction (and other limits?) */
 #define RCF_KILLPEASANTS   (1<<1)   /* a monster that eats peasants */

src/kernel/race.test.c

@@ -11,6 +11,7 @@
 #include <CuTest.h>
 
 #include <stdlib.h>
+#include <string.h>
 #include <limits.h>
 #include <assert.h>
 
@@ -172,6 +173,19 @@ static void test_racename(CuTest *tc) {
     test_teardown();
 }
 
+static void test_rc_mask(CuTest *tc) {
+    int mask;
+    char list[64];
+    test_setup();
+    strcpy(list, "goblin dwarf");
+    mask = rc_mask(list);
+    CuAssertIntEquals(tc, 3, mask);
+    CuAssertStrEquals(tc, "goblin", list);
+    mask = rc_mask(list);
+    CuAssertIntEquals(tc, 1, mask);
+    test_teardown();
+}
+
 CuSuite *get_race_suite(void)
 {
     CuSuite *suite = CuSuiteNew();
@@ -180,6 +194,7 @@ CuSuite *get_race_suite(void)
     SUITE_ADD_TEST(suite, test_rc_name);
     SUITE_ADD_TEST(suite, test_rc_defaults);
     SUITE_ADD_TEST(suite, test_rc_find);
+    SUITE_ADD_TEST(suite, test_rc_mask);
     SUITE_ADD_TEST(suite, test_rc_set_param);
     SUITE_ADD_TEST(suite, test_rc_can_use);
     SUITE_ADD_TEST(suite, test_racename);

src/xmlreader.c

@@ -656,23 +656,12 @@ static weapon_type *xml_readweapon(xmlXPathContextPtr xpath, item_type * itype)
     return wtype;
 }
 
-static int race_mask = 1;
-
 static void mask_races(xmlNodePtr node, const char *key, int *maskp) {
     xmlChar *propValue = xmlGetProp(node, BAD_CAST key);
     int mask = 0;
     assert(maskp);
     if (propValue) {
-        char * tok = strtok((char *)propValue, " ,");
-        while (tok) {
-            race * rc = rc_get_or_create(tok);
-            if (!rc->mask_item) {
-                rc->mask_item = race_mask;
-                race_mask = race_mask << 1;
-            }
-            mask |= rc->mask_item;
-            tok = strtok(NULL, " ,");
-        }
+        mask = rc_mask((char *)propValue);
         xmlFree(propValue);
     }
     *maskp = mask;