submodule: avoid hard-coded constants
Instead of using hard-coded 40-based constants, express these values in
terms of the_hash_algo and GIT_MAX_HEXSZ.
Signed-off-by: brian m. carlson <sandals@crustytoothpaste.net>
Signed-off-by: Junio C Hamano <gitster@pobox.com>
diff --git a/submodule.c b/submodule.c
index 21cf50c..150d955 100644
--- a/submodule.c
+++ b/submodule.c
@@ -994,7 +994,7 @@ static int submodule_needs_pushing(struct repository *r,
if (start_command(&cp))
die("Could not run 'git rev-list <commits> --not --remotes -n 1' command in submodule %s",
path);
- if (strbuf_read(&buf, cp.out, 41))
+ if (strbuf_read(&buf, cp.out, the_hash_algo->hexsz + 1))
needs_pushing = 1;
finish_command(&cp);
close(cp.out);
