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clone: Allow repo using gitfile as a reference

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Try reading gitfile files when processing --reference options to clone.
This will allow, among other things, using a submodule checked out with
a recent version of git as a reference repository without requiring the
user to have internal knowledge of submodule layout.

Signed-off-by: Aaron Schrab <aaron@schrab.com>
Signed-off-by: Junio C Hamano <gitster@pobox.com>
This commit is contained in:
Aaron Schrab
2013-04-09 18:22:00 -04:00
committed by Junio C Hamano
parent 0658569eb0
commit b552b56df2
2 changed files with 25 additions and 2 deletions
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14
builtin/clone.c
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@ -232,11 +232,21 @@ static void strip_trailing_slashes(char *dir)
static int add_one_reference(struct string_list_item *item, void *cb_data)
{
char *ref_git;
const char *repo;
struct strbuf alternate = STRBUF_INIT;
/* Beware: real_path() and mkpath() return static buffer */
/* Beware: read_gitfile(), real_path() and mkpath() return static buffer */
ref_git = xstrdup(real_path(item->string));
if (is_directory(mkpath("%s/.git/objects", ref_git))) {
repo = read_gitfile(ref_git);
if (!repo)
repo = read_gitfile(mkpath("%s/.git", ref_git));
if (repo) {
free(ref_git);
ref_git = xstrdup(repo);
}
if (!repo && is_directory(mkpath("%s/.git/objects", ref_git))) {
char *ref_git_git = mkpathdup("%s/.git", ref_git);
free(ref_git);
ref_git = ref_git_git;