builtin: move builtin retrieval to get_builtin()

There was a redundant code for a builtin command retrieval in
'handle_builtin()' and 'is_builtin()'.

Introduce a new function 'get_builtin()' and using it from
both of these places to reduce the redundancy.

Signed-off-by: Slavomir Vlcek <svlc@inventati.org>
Signed-off-by: Junio C Hamano <gitster@pobox.com>

diff --git a/git.c b/git.c
index 9c495198317bf31ff40785a48bf0a44253548098..84310e30ee7f33209ea1d9cc80e3aa010abd5c64 100644 (file)
--- a/git.c
+++ b/git.c
@@ -486,15 +486,20 @@ static struct cmd_struct commands[] = {
        { "write-tree", cmd_write_tree, RUN_SETUP },
 };
 
-int is_builtin(const char *s)
+static struct cmd_struct *get_builtin(const char *s)
 {
        int i;
        for (i = 0; i < ARRAY_SIZE(commands); i++) {
-               struct cmd_struct *p = commands+i;
+               struct cmd_struct *p = commands + i;
                if (!strcmp(s, p->cmd))
-                       return 1;
+                       return p;
        }
-       return 0;
+       return NULL;
+}
+
+int is_builtin(const char *s)
+{
+       return !!get_builtin(s);
 }
 
 static void handle_builtin(int argc, const char **argv)
@@ -502,6 +507,7 @@ static void handle_builtin(int argc, const char **argv)
        const char *cmd = argv[0];
        int i;
        static const char ext[] = STRIP_EXTENSION;
+       struct cmd_struct *builtin;
 
        if (sizeof(ext) > 1) {
                i = strlen(argv[0]) - strlen(ext);
@@ -518,15 +524,12 @@ static void handle_builtin(int argc, const char **argv)
                argv[0] = cmd = "help";
        }
 
-       for (i = 0; i < ARRAY_SIZE(commands); i++) {
-               struct cmd_struct *p = commands+i;
-               if (strcmp(p->cmd, cmd))
-                       continue;
-               if (saved_environment && (p->option & NO_SETUP)) {
+       builtin = get_builtin(cmd);
+       if (builtin) {
+               if (saved_environment && (builtin->option & NO_SETUP))
                        restore_env();
-                       break;
-               }
-               exit(run_builtin(p, argc, argv));
+               else
+                       exit(run_builtin(builtin, argc, argv));
        }
 }