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branch: add a dry_run parameter to create_branch()

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Add a dry_run parameter to create_branch() such that dry_run = 1 will
validate a new branch without trying to create it. This will be used in
`git branch --recurse-submodules` to ensure that the new branch can be
created in all submodules.

Signed-off-by: Glen Choo <chooglen@google.com>
Reviewed-by: Jonathan Tan <jonathantanmy@google.com>
Signed-off-by: Junio C Hamano <gitster@pobox.com>
This commit is contained in:
Glen Choo 2022-01-28 16:04:43 -08:00 committed by Junio C Hamano
parent bc0893cf3b
commit 3f3e76082b
4 changed files with 11 additions and 4 deletions
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5
branch.c
View File

@ -423,7 +423,7 @@ static void dwim_branch_start(struct repository *r, const char *start_name,
void create_branch(struct repository *r,
const char *name, const char *start_name,
int force, int clobber_head_ok, int reflog,
int quiet, enum branch_track track)
int quiet, enum branch_track track, int dry_run)
{
struct object_id oid;
char *real_ref;
@ -445,6 +445,8 @@ void create_branch(struct repository *r,
}
dwim_branch_start(r, start_name, track, &real_ref, &oid);
if (dry_run)
goto cleanup;
if (reflog)
log_all_ref_updates = LOG_REFS_NORMAL;
@ -467,6 +469,7 @@ void create_branch(struct repository *r,
if (real_ref && track)
setup_tracking(ref.buf + 11, real_ref, track, quiet);
cleanup:
strbuf_release(&ref);
free(real_ref);
}

5
branch.h
View File

@ -62,11 +62,14 @@ void dwim_and_setup_tracking(struct repository *r, const char *new_ref,
* - track causes the new branch to be configured to merge the remote branch
* that start_name is a tracking branch for (if any).
*
* - dry_run causes the branch to be validated but not created.
*
*/
void create_branch(struct repository *r,
const char *name, const char *start_name,
int force, int clobber_head_ok,
int reflog, int quiet, enum branch_track track);
int reflog, int quiet, enum branch_track track,
int dry_run);
/*
* Check if 'name' can be a valid name for a branch; die otherwise.

2
builtin/branch.c
View File

@ -859,7 +859,7 @@ int cmd_branch(int argc, const char **argv, const char *prefix)
create_branch(the_repository,
argv[0], (argc == 2) ? argv[1] : head,
force, 0, reflog, quiet, track);
force, 0, reflog, quiet, track, 0);
} else
usage_with_options(builtin_branch_usage, options);

3
builtin/checkout.c
View File

@ -893,7 +893,8 @@ static void update_refs_for_switch(const struct checkout_opts *opts,
opts->new_branch_force ? 1 : 0,
opts->new_branch_log,
opts->quiet,
opts->track);
opts->track,
0);
new_branch_info->name = opts->new_branch;
setup_branch_path(new_branch_info);
}