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submodule.c: get_super_prefix_or_empty

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In a later patch we need to use the super_prefix, and
in case it is NULL we can just assume it is empty.
Create a helper function for this.

We already have some use cases for this helper function,
convert them, too.

Signed-off-by: Stefan Beller <sbeller@google.com>
Signed-off-by: Junio C Hamano <gitster@pobox.com>
This commit is contained in:
Stefan Beller 2017-03-14 14:46:36 -07:00 committed by Junio C Hamano
parent 6cd5757c89
commit 202275b96b
1 changed files with 10 additions and 6 deletions
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16
submodule.c
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@ -1239,6 +1239,14 @@ out:
return ret;
}
static const char *get_super_prefix_or_empty(void)
{
const char *s = get_super_prefix();
if (!s)
s = "";
return s;
}
static int find_first_merges(struct object_array *result, const char *path,
struct commit *a, struct commit *b)
{
@ -1438,11 +1446,8 @@ static void relocate_single_git_dir_into_superproject(const char *prefix,
die(_("could not create directory '%s'"), new_git_dir);
real_new_git_dir = real_pathdup(new_git_dir);
if (!prefix)
prefix = get_super_prefix();
fprintf(stderr, _("Migrating git directory of '%s%s' from\n'%s' to\n'%s'\n"),
prefix ? prefix : "", path,
get_super_prefix_or_empty(), path,
real_old_git_dir, real_new_git_dir);
relocate_gitdir(path, real_old_git_dir, real_new_git_dir);
@ -1513,8 +1518,7 @@ void absorb_git_dir_into_superproject(const char *prefix,
if (flags & ~ABSORB_GITDIR_RECURSE_SUBMODULES)
die("BUG: we don't know how to pass the flags down?");
if (get_super_prefix())
strbuf_addstr(&sb, get_super_prefix());
strbuf_addstr(&sb, get_super_prefix_or_empty());
strbuf_addstr(&sb, path);
strbuf_addch(&sb, '/');