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submodule: use submodule repos for object lookup 

This converts the 'show_submodule_header' function to use
the repository API properly, such that the submodule objects
are not added to the main object store.

Signed-off-by: Stefan Beller <sbeller@google.com>
Signed-off-by: Junio C Hamano <gitster@pobox.com>
This commit is contained in:
Stefan Beller 2018-12-14 16:09:37 -08:00 committed by Junio C Hamano
parent f54fbf5eef
commit 605f0ec135
1 changed files with 60 additions and 15 deletions
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75
submodule.c
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@ -443,7 +443,7 @@ static int prepare_submodule_summary(struct rev_info *rev, const char *path,
return prepare_revision_walk(rev);
}
static void print_submodule_summary(struct rev_info *rev, struct diff_options *o)
static void print_submodule_summary(struct repository *r, struct rev_info *rev, struct diff_options *o)
{
static const char format[] = " %m %s";
struct strbuf sb = STRBUF_INIT;
@ -454,7 +454,8 @@ static void print_submodule_summary(struct rev_info *rev, struct diff_options *o
ctx.date_mode = rev->date_mode;
ctx.output_encoding = get_log_output_encoding();
strbuf_setlen(&sb, 0);
format_commit_message(commit, format, &sb, &ctx);
repo_format_commit_message(r, commit, format, &sb,
&ctx);
strbuf_addch(&sb, '\n');
if (commit->object.flags & SYMMETRIC_LEFT)
diff_emit_submodule_del(o, sb.buf);
@ -481,14 +482,46 @@ void prepare_submodule_repo_env(struct argv_array *out)
DEFAULT_GIT_DIR_ENVIRONMENT);
}
/* Helper function to display the submodule header line prior to the full
* summary output. If it can locate the submodule objects directory it will
* attempt to lookup both the left and right commits and put them into the
* left and right pointers.
/*
* Initialize a repository struct for a submodule based on the provided 'path'.
*
* Unlike repo_submodule_init, this tolerates submodules not present
* in .gitmodules. This function exists only to preserve historical behavior,
*
* Returns the repository struct on success,
* NULL when the submodule is not present.
*/
static void show_submodule_header(struct diff_options *o, const char *path,
static struct repository *open_submodule(const char *path)
{
struct strbuf sb = STRBUF_INIT;
struct repository *out = xmalloc(sizeof(*out));
if (submodule_to_gitdir(&sb, path) || repo_init(out, sb.buf, NULL)) {
strbuf_release(&sb);
free(out);
return NULL;
}
/* Mark it as a submodule */
out->submodule_prefix = xstrdup(path);
strbuf_release(&sb);
return out;
}
/*
* Helper function to display the submodule header line prior to the full
* summary output.
*
* If it can locate the submodule git directory it will create a repository
* handle for the submodule and lookup both the left and right commits and
* put them into the left and right pointers.
*/
static void show_submodule_header(struct diff_options *o,
const char *path,
struct object_id *one, struct object_id *two,
unsigned dirty_submodule,
struct repository *sub,
struct commit **left, struct commit **right,
struct commit_list **merge_bases)
{
@ -507,7 +540,7 @@ static void show_submodule_header(struct diff_options *o, const char *path,
else if (is_null_oid(two))
message = "(submodule deleted)";
if (add_submodule_odb(path)) {
if (!sub) {
if (!message)
message = "(commits not present)";
goto output_header;
@ -517,8 +550,8 @@ static void show_submodule_header(struct diff_options *o, const char *path,
* Attempt to lookup the commit references, and determine if this is
* a fast forward or fast backwards update.
*/
*left = lookup_commit_reference(the_repository, one);
*right = lookup_commit_reference(the_repository, two);
*left = lookup_commit_reference(sub, one);
*right = lookup_commit_reference(sub, two);
/*
* Warn about missing commits in the submodule project, but only if
@ -528,7 +561,7 @@ static void show_submodule_header(struct diff_options *o, const char *path,
(!is_null_oid(two) && !*right))
message = "(commits not present)";
*merge_bases = get_merge_bases(*left, *right);
*merge_bases = repo_get_merge_bases(sub, *left, *right);
if (*merge_bases) {
if ((*merge_bases)->item == *left)
fast_forward = 1;
@ -562,16 +595,18 @@ void show_submodule_summary(struct diff_options *o, const char *path,
struct rev_info rev;
struct commit *left = NULL, *right = NULL;
struct commit_list *merge_bases = NULL;
struct repository *sub;
sub = open_submodule(path);
show_submodule_header(o, path, one, two, dirty_submodule,
&left, &right, &merge_bases);
sub, &left, &right, &merge_bases);
/*
* If we don't have both a left and a right pointer, there is no
* reason to try and display a summary. The header line should contain
* all the information the user needs.
*/
if (!left || !right)
if (!left || !right || !sub)
goto out;
/* Treat revision walker failure the same as missing commits */
@ -580,13 +615,17 @@ void show_submodule_summary(struct diff_options *o, const char *path,
goto out;
}
print_submodule_summary(&rev, o);
print_submodule_summary(sub, &rev, o);
out:
if (merge_bases)
free_commit_list(merge_bases);
clear_commit_marks(left, ~0);
clear_commit_marks(right, ~0);
if (sub) {
repo_clear(sub);
free(sub);
}
}
void show_submodule_inline_diff(struct diff_options *o, const char *path,
@ -598,9 +637,11 @@ void show_submodule_inline_diff(struct diff_options *o, const char *path,
struct commit_list *merge_bases = NULL;
struct child_process cp = CHILD_PROCESS_INIT;
struct strbuf sb = STRBUF_INIT;
struct repository *sub;
sub = open_submodule(path);
show_submodule_header(o, path, one, two, dirty_submodule,
&left, &right, &merge_bases);
sub, &left, &right, &merge_bases);
/* We need a valid left and right commit to display a difference */
if (!(left || is_null_oid(one)) ||
@ -661,6 +702,10 @@ void show_submodule_inline_diff(struct diff_options *o, const char *path,
clear_commit_marks(left, ~0);
if (right)
clear_commit_marks(right, ~0);
if (sub) {
repo_clear(sub);
free(sub);
}
}
int should_update_submodules(void)