submodule--helper: prefer strip_suffix() to ends_with()

Using strip_suffix() lets us avoid repeating ourselves. It also makes
the handling of "/" a bit less subtle (we strip one less character than
we matched in order to leave it in place, but we can just as easily
include the "/" when we add more path components).

Signed-off-by: Jeff King <peff@peff.net>
Signed-off-by: Junio C Hamano <gitster@pobox.com>

diff --git a/builtin/submodule--helper.c b/builtin/submodule--helper.c
index 676175b9befa23c70e56e12c00746b8faf899b8c..28b9449e823a992b9ca1dc19882c9b5a41c80c72 100644 (file)
--- a/builtin/submodule--helper.c
+++ b/builtin/submodule--helper.c
@@ -1268,16 +1268,17 @@ static int add_possible_reference_from_superproject(
                struct alternate_object_database *alt, void *sas_cb)
 {
        struct submodule_alternate_setup *sas = sas_cb;
+       size_t len;
 
        /*
         * If the alternate object store is another repository, try the
         * standard layout with .git/(modules/<name>)+/objects
         */
-       if (ends_with(alt->path, "/objects")) {
+       if (strip_suffix(alt->path, "/objects", &len)) {
                char *sm_alternate;
                struct strbuf sb = STRBUF_INIT;
                struct strbuf err = STRBUF_INIT;
-               strbuf_add(&sb, alt->path, strlen(alt->path) - strlen("objects"));
+               strbuf_add(&sb, alt->path, len);
 
                /*
                 * We need to end the new path with '/' to mark it as a dir,
@@ -1285,7 +1286,7 @@ static int add_possible_reference_from_superproject(
                 * as the last part of a missing submodule reference would
                 * be taken as a file name.
                 */
-               strbuf_addf(&sb, "modules/%s/", sas->submodule_name);
+               strbuf_addf(&sb, "/modules/%s/", sas->submodule_name);
 
                sm_alternate = compute_alternate_path(sb.buf, &err);
                if (sm_alternate) {