transport: simplify fetch_objs_via_rsync() using argv_array

Use the existing argv_array member instead of building the arguments
list using a string array and a strbuf.  This way we don't need magic
number constants and allocations are cleaned up for us automatically
by run_command().

Signed-off-by: Rene Scharfe <l.s.r@web.de>
Signed-off-by: Junio C Hamano <gitster@pobox.com>

diff --git a/transport.c b/transport.c
index 59c9727d8d63d548001513c1560b5c7a7e065b95..3e425709fded6e384add10aeff7f19455259ff46 100644 (file)
--- a/transport.c
+++ b/transport.c
@@ -263,32 +263,20 @@ static struct ref *get_refs_via_rsync(struct transport *transport, int for_push)
 static int fetch_objs_via_rsync(struct transport *transport,
                                int nr_objs, struct ref **to_fetch)
 {
-       struct strbuf buf = STRBUF_INIT;
        struct child_process rsync;
-       const char *args[8];
-       int result;
-
-       strbuf_addstr(&buf, rsync_url(transport->url));
-       strbuf_addstr(&buf, "/objects/");
 
        memset(&rsync, 0, sizeof(rsync));
-       rsync.argv = args;
        rsync.stdout_to_stderr = 1;
-       args[0] = "rsync";
-       args[1] = (transport->verbose > 1) ? "-rv" : "-r";
-       args[2] = "--ignore-existing";
-       args[3] = "--exclude";
-       args[4] = "info";
-       args[5] = buf.buf;
-       args[6] = get_object_directory();
-       args[7] = NULL;
+       argv_array_push(&rsync.args, "rsync");
+       argv_array_push(&rsync.args, (transport->verbose > 1) ? "-rv" : "-r");
+       argv_array_push(&rsync.args, "--ignore-existing");
+       argv_array_push(&rsync.args, "--exclude");
+       argv_array_push(&rsync.args, "info");
+       argv_array_pushf(&rsync.args, "%s/objects/", rsync_url(transport->url));
+       argv_array_push(&rsync.args, get_object_directory());
 
        /* NEEDSWORK: handle one level of alternates */
-       result = run_command(&rsync);
-
-       strbuf_release(&buf);
-
-       return result;
+       return run_command(&rsync);
 }
 
 static int write_one_ref(const char *name, const unsigned char *sha1,