log: add load_ref_decorations()

Move the loading of all ref names for decoration into its own function.
A static variable prevents loading twice, because it's quite expensive.
We can do it this way because we currently never unload decorations.

Signed-off-by: Rene Scharfe <rene.scharfe@lsrfire.ath.cx>
Signed-off-by: Junio C Hamano <gitster@pobox.com>

diff --git a/builtin-log.c b/builtin-log.c
index 1d3c5cbf580f3989d9605ed68f80beb050e19d39..0f164620b9b7b9d0df088f101b725cee632272a4 100644 (file)
--- a/builtin-log.c
+++ b/builtin-log.c
@@ -50,6 +50,15 @@ static int add_ref_decoration(const char *refname, const unsigned char *sha1, in
        return 0;
 }
 
+void load_ref_decorations(void)
+{
+       static int loaded;
+       if (!loaded) {
+               loaded = 1;
+               for_each_ref(add_ref_decoration, NULL);
+       }
+}
+
 static void cmd_log_init(int argc, const char **argv, const char *prefix,
                      struct rev_info *rev)
 {
@@ -80,8 +89,7 @@ static void cmd_log_init(int argc, const char **argv, const char *prefix,
        for (i = 1; i < argc; i++) {
                const char *arg = argv[i];
                if (!strcmp(arg, "--decorate")) {
-                       if (!decorate)
-                               for_each_ref(add_ref_decoration, NULL);
+                       load_ref_decorations();
                        decorate = 1;
                } else
                        die("unrecognized argument: %s", arg);