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pull --rebase: compute rebase arguments in separate function

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The function 'run_rebase' is responsible for constructing the
command line to be passed to 'git rebase'. This includes both forwarding
pass-through options given to 'git pull' as well computing the <newbase>
and <upstream> arguments to 'git rebase'.

A following commit will need to access the <upstream> argument in
'cmd_pull' to fix a bug with 'git pull --rebase --recurse-submodules'.
In order to do so, refactor the code so that the <newbase> and
<upstream> commits are computed in a new, separate function,
'get_rebase_newbase_and_upstream'.

Signed-off-by: Philippe Blain <levraiphilippeblain@gmail.com>
Signed-off-by: Junio C Hamano <gitster@pobox.com>
This commit is contained in:
Philippe Blain 2020-11-14 00:34:42 +00:00 committed by Junio C Hamano
parent 898f80736c
commit 4f66d79ae3
1 changed files with 35 additions and 11 deletions
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46
builtin/pull.c
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@ -852,21 +852,42 @@ static int get_octopus_merge_base(struct object_id *merge_base,
/**
* Given the current HEAD oid, the merge head returned from git-fetch and the
* fork point calculated by get_rebase_fork_point(), runs git-rebase with the
* appropriate arguments and returns its exit status.
* fork point calculated by get_rebase_fork_point(), compute the <newbase> and
* <upstream> arguments to use for the upcoming git-rebase invocation.
*/
static int run_rebase(const struct object_id *curr_head,
static int get_rebase_newbase_and_upstream(struct object_id *newbase,
struct object_id *upstream,
const struct object_id *curr_head,
const struct object_id *merge_head,
const struct object_id *fork_point)
{
int ret;
struct object_id oct_merge_base;
struct strvec args = STRVEC_INIT;
if (!get_octopus_merge_base(&oct_merge_base, curr_head, merge_head, fork_point))
if (!is_null_oid(fork_point) && oideq(&oct_merge_base, fork_point))
fork_point = NULL;
if (fork_point && !is_null_oid(fork_point))
oidcpy(upstream, fork_point);
else
oidcpy(upstream, merge_head);
oidcpy(newbase, merge_head);
return 0;
}
/**
* Given the <newbase> and <upstream> calculated by
* get_rebase_newbase_and_upstream(), runs git-rebase with the
* appropriate arguments and returns its exit status.
*/
static int run_rebase(const struct object_id *newbase,
const struct object_id *upstream)
{
int ret;
struct strvec args = STRVEC_INIT;
strvec_push(&args, "rebase");
/* Shared options */
@ -894,12 +915,9 @@ static int run_rebase(const struct object_id *curr_head,
warning(_("ignoring --verify-signatures for rebase"));
strvec_push(&args, "--onto");
strvec_push(&args, oid_to_hex(merge_head));
strvec_push(&args, oid_to_hex(newbase));
if (fork_point && !is_null_oid(fork_point))
strvec_push(&args, oid_to_hex(fork_point));
else
strvec_push(&args, oid_to_hex(merge_head));
strvec_push(&args, oid_to_hex(upstream));
ret = run_command_v_opt(args.v, RUN_GIT_CMD);
strvec_clear(&args);
@ -1011,6 +1029,12 @@ int cmd_pull(int argc, const char **argv, const char *prefix)
if (opt_rebase) {
int ret = 0;
int ran_ff = 0;
struct object_id newbase;
struct object_id upstream;
get_rebase_newbase_and_upstream(&newbase, &upstream, &curr_head,
merge_heads.oid, &rebase_fork_point);
if ((recurse_submodules == RECURSE_SUBMODULES_ON ||
recurse_submodules == RECURSE_SUBMODULES_ON_DEMAND) &&
submodule_touches_in_range(the_repository, &rebase_fork_point, &curr_head))
@ -1034,7 +1058,7 @@ int cmd_pull(int argc, const char **argv, const char *prefix)
free_commit_list(list);
}
if (!ran_ff)
ret = run_rebase(&curr_head, merge_heads.oid, &rebase_fork_point);
ret = run_rebase(&newbase, &upstream);
if (!ret && (recurse_submodules == RECURSE_SUBMODULES_ON ||
recurse_submodules == RECURSE_SUBMODULES_ON_DEMAND))