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Diffstat (limited to 'builtin/pull.c')
-rw-r--r--builtin/pull.c271
1 files changed, 156 insertions, 115 deletions
diff --git a/builtin/pull.c b/builtin/pull.c
index 00e5857..e8927fc 100644
--- a/builtin/pull.c
+++ b/builtin/pull.c
@@ -87,8 +87,8 @@ static char *opt_verify_signatures;
static int opt_autostash = -1;
static int config_autostash;
static int check_trust_level = 1;
-static struct argv_array opt_strategies = ARGV_ARRAY_INIT;
-static struct argv_array opt_strategy_opts = ARGV_ARRAY_INIT;
+static struct strvec opt_strategies = STRVEC_INIT;
+static struct strvec opt_strategy_opts = STRVEC_INIT;
static char *opt_gpg_sign;
static int opt_allow_unrelated_histories;
@@ -110,7 +110,7 @@ static char *opt_ipv4;
static char *opt_ipv6;
static int opt_show_forced_updates = -1;
static char *set_upstream;
-static struct argv_array opt_fetch = ARGV_ARRAY_INIT;
+static struct strvec opt_fetch = STRVEC_INIT;
static struct option pull_options[] = {
/* Shared options */
@@ -142,7 +142,7 @@ static struct option pull_options[] = {
N_("add (at most <n>) entries from shortlog to merge commit message"),
PARSE_OPT_OPTARG),
OPT_PASSTHRU(0, "signoff", &opt_signoff, NULL,
- N_("add Signed-off-by:"),
+ N_("add a Signed-off-by trailer"),
PARSE_OPT_OPTARG),
OPT_PASSTHRU(0, "squash", &opt_squash, NULL,
N_("create a single commit instead of doing a merge"),
@@ -251,25 +251,25 @@ static struct option pull_options[] = {
/**
* Pushes "-q" or "-v" switches into arr to match the opt_verbosity level.
*/
-static void argv_push_verbosity(struct argv_array *arr)
+static void argv_push_verbosity(struct strvec *arr)
{
int verbosity;
for (verbosity = opt_verbosity; verbosity > 0; verbosity--)
- argv_array_push(arr, "-v");
+ strvec_push(arr, "-v");
for (verbosity = opt_verbosity; verbosity < 0; verbosity++)
- argv_array_push(arr, "-q");
+ strvec_push(arr, "-q");
}
/**
* Pushes "-f" switches into arr to match the opt_force level.
*/
-static void argv_push_force(struct argv_array *arr)
+static void argv_push_force(struct strvec *arr)
{
int force = opt_force;
while (force-- > 0)
- argv_array_push(arr, "-f");
+ strvec_push(arr, "-f");
}
/**
@@ -324,7 +324,7 @@ static const char *config_get_ff(void)
* looks for the value of "pull.rebase". If both configuration keys do not
* exist, returns REBASE_FALSE.
*/
-static enum rebase_type config_get_rebase(void)
+static enum rebase_type config_get_rebase(int *rebase_unspecified)
{
struct branch *curr_branch = branch_get("HEAD");
const char *value;
@@ -344,21 +344,7 @@ static enum rebase_type config_get_rebase(void)
if (!git_config_get_value("pull.rebase", &value))
return parse_config_rebase("pull.rebase", value, 1);
- if (opt_verbosity >= 0 &&
- (!opt_ff || strcmp(opt_ff, "--ff-only"))) {
- warning(_("Pulling without specifying how to reconcile divergent branches is\n"
- "discouraged. You can squelch this message by running one of the following\n"
- "commands sometime before your next pull:\n"
- "\n"
- " git config pull.rebase false # merge (the default strategy)\n"
- " git config pull.rebase true # rebase\n"
- " git config pull.ff only # fast-forward only\n"
- "\n"
- "You can replace \"git config\" with \"git config --global\" to set a default\n"
- "preference for all repositories. You can also pass --rebase, --no-rebase,\n"
- "or --ff-only on the command line to override the configured default per\n"
- "invocation.\n"));
- }
+ *rebase_unspecified = 1;
return REBASE_FALSE;
}
@@ -524,75 +510,75 @@ static void parse_repo_refspecs(int argc, const char **argv, const char **repo,
*/
static int run_fetch(const char *repo, const char **refspecs)
{
- struct argv_array args = ARGV_ARRAY_INIT;
+ struct strvec args = STRVEC_INIT;
int ret;
- argv_array_pushl(&args, "fetch", "--update-head-ok", NULL);
+ strvec_pushl(&args, "fetch", "--update-head-ok", NULL);
/* Shared options */
argv_push_verbosity(&args);
if (opt_progress)
- argv_array_push(&args, opt_progress);
+ strvec_push(&args, opt_progress);
/* Options passed to git-fetch */
if (opt_all)
- argv_array_push(&args, opt_all);
+ strvec_push(&args, opt_all);
if (opt_append)
- argv_array_push(&args, opt_append);
+ strvec_push(&args, opt_append);
if (opt_upload_pack)
- argv_array_push(&args, opt_upload_pack);
+ strvec_push(&args, opt_upload_pack);
argv_push_force(&args);
if (opt_tags)
- argv_array_push(&args, opt_tags);
+ strvec_push(&args, opt_tags);
if (opt_prune)
- argv_array_push(&args, opt_prune);
+ strvec_push(&args, opt_prune);
if (recurse_submodules != RECURSE_SUBMODULES_DEFAULT)
switch (recurse_submodules) {
case RECURSE_SUBMODULES_ON:
- argv_array_push(&args, "--recurse-submodules=on");
+ strvec_push(&args, "--recurse-submodules=on");
break;
case RECURSE_SUBMODULES_OFF:
- argv_array_push(&args, "--recurse-submodules=no");
+ strvec_push(&args, "--recurse-submodules=no");
break;
case RECURSE_SUBMODULES_ON_DEMAND:
- argv_array_push(&args, "--recurse-submodules=on-demand");
+ strvec_push(&args, "--recurse-submodules=on-demand");
break;
default:
BUG("submodule recursion option not understood");
}
if (max_children)
- argv_array_push(&args, max_children);
+ strvec_push(&args, max_children);
if (opt_dry_run)
- argv_array_push(&args, "--dry-run");
+ strvec_push(&args, "--dry-run");
if (opt_keep)
- argv_array_push(&args, opt_keep);
+ strvec_push(&args, opt_keep);
if (opt_depth)
- argv_array_push(&args, opt_depth);
+ strvec_push(&args, opt_depth);
if (opt_unshallow)
- argv_array_push(&args, opt_unshallow);
+ strvec_push(&args, opt_unshallow);
if (opt_update_shallow)
- argv_array_push(&args, opt_update_shallow);
+ strvec_push(&args, opt_update_shallow);
if (opt_refmap)
- argv_array_push(&args, opt_refmap);
+ strvec_push(&args, opt_refmap);
if (opt_ipv4)
- argv_array_push(&args, opt_ipv4);
+ strvec_push(&args, opt_ipv4);
if (opt_ipv6)
- argv_array_push(&args, opt_ipv6);
+ strvec_push(&args, opt_ipv6);
if (opt_show_forced_updates > 0)
- argv_array_push(&args, "--show-forced-updates");
+ strvec_push(&args, "--show-forced-updates");
else if (opt_show_forced_updates == 0)
- argv_array_push(&args, "--no-show-forced-updates");
+ strvec_push(&args, "--no-show-forced-updates");
if (set_upstream)
- argv_array_push(&args, set_upstream);
- argv_array_pushv(&args, opt_fetch.argv);
+ strvec_push(&args, set_upstream);
+ strvec_pushv(&args, opt_fetch.v);
if (repo) {
- argv_array_push(&args, repo);
- argv_array_pushv(&args, refspecs);
+ strvec_push(&args, repo);
+ strvec_pushv(&args, refspecs);
} else if (*refspecs)
BUG("refspecs without repo?");
- ret = run_command_v_opt(args.argv, RUN_GIT_CMD);
- argv_array_clear(&args);
+ ret = run_command_v_opt(args.v, RUN_GIT_CMD);
+ strvec_clear(&args);
return ret;
}
@@ -637,8 +623,8 @@ static int rebase_submodules(void)
cp.git_cmd = 1;
cp.no_stdin = 1;
- argv_array_pushl(&cp.args, "submodule", "update",
- "--recursive", "--rebase", NULL);
+ strvec_pushl(&cp.args, "submodule", "update",
+ "--recursive", "--rebase", NULL);
argv_push_verbosity(&cp.args);
return run_command(&cp);
@@ -650,8 +636,8 @@ static int update_submodules(void)
cp.git_cmd = 1;
cp.no_stdin = 1;
- argv_array_pushl(&cp.args, "submodule", "update",
- "--recursive", "--checkout", NULL);
+ strvec_pushl(&cp.args, "submodule", "update",
+ "--recursive", "--checkout", NULL);
argv_push_verbosity(&cp.args);
return run_command(&cp);
@@ -663,48 +649,48 @@ static int update_submodules(void)
static int run_merge(void)
{
int ret;
- struct argv_array args = ARGV_ARRAY_INIT;
+ struct strvec args = STRVEC_INIT;
- argv_array_pushl(&args, "merge", NULL);
+ strvec_pushl(&args, "merge", NULL);
/* Shared options */
argv_push_verbosity(&args);
if (opt_progress)
- argv_array_push(&args, opt_progress);
+ strvec_push(&args, opt_progress);
/* Options passed to git-merge */
if (opt_diffstat)
- argv_array_push(&args, opt_diffstat);
+ strvec_push(&args, opt_diffstat);
if (opt_log)
- argv_array_push(&args, opt_log);
+ strvec_push(&args, opt_log);
if (opt_signoff)
- argv_array_push(&args, opt_signoff);
+ strvec_push(&args, opt_signoff);
if (opt_squash)
- argv_array_push(&args, opt_squash);
+ strvec_push(&args, opt_squash);
if (opt_commit)
- argv_array_push(&args, opt_commit);
+ strvec_push(&args, opt_commit);
if (opt_edit)
- argv_array_push(&args, opt_edit);
+ strvec_push(&args, opt_edit);
if (cleanup_arg)
- argv_array_pushf(&args, "--cleanup=%s", cleanup_arg);
+ strvec_pushf(&args, "--cleanup=%s", cleanup_arg);
if (opt_ff)
- argv_array_push(&args, opt_ff);
+ strvec_push(&args, opt_ff);
if (opt_verify_signatures)
- argv_array_push(&args, opt_verify_signatures);
- argv_array_pushv(&args, opt_strategies.argv);
- argv_array_pushv(&args, opt_strategy_opts.argv);
+ strvec_push(&args, opt_verify_signatures);
+ strvec_pushv(&args, opt_strategies.v);
+ strvec_pushv(&args, opt_strategy_opts.v);
if (opt_gpg_sign)
- argv_array_push(&args, opt_gpg_sign);
+ strvec_push(&args, opt_gpg_sign);
if (opt_autostash == 0)
- argv_array_push(&args, "--no-autostash");
+ strvec_push(&args, "--no-autostash");
else if (opt_autostash == 1)
- argv_array_push(&args, "--autostash");
+ strvec_push(&args, "--autostash");
if (opt_allow_unrelated_histories > 0)
- argv_array_push(&args, "--allow-unrelated-histories");
+ strvec_push(&args, "--allow-unrelated-histories");
- argv_array_push(&args, "FETCH_HEAD");
- ret = run_command_v_opt(args.argv, RUN_GIT_CMD);
- argv_array_clear(&args);
+ strvec_push(&args, "FETCH_HEAD");
+ ret = run_command_v_opt(args.v, RUN_GIT_CMD);
+ strvec_clear(&args);
return ret;
}
@@ -801,8 +787,8 @@ static int get_rebase_fork_point(struct object_id *fork_point, const char *repo,
if (!remote_branch)
return -1;
- argv_array_pushl(&cp.args, "merge-base", "--fork-point",
- remote_branch, curr_branch->name, NULL);
+ strvec_pushl(&cp.args, "merge-base", "--fork-point",
+ remote_branch, curr_branch->name, NULL);
cp.no_stdin = 1;
cp.no_stderr = 1;
cp.git_cmd = 1;
@@ -853,60 +839,108 @@ 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 argv_array args = ARGV_ARRAY_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;
- argv_array_push(&args, "rebase");
+ 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 */
argv_push_verbosity(&args);
/* Options passed to git-rebase */
if (opt_rebase == REBASE_MERGES)
- argv_array_push(&args, "--rebase-merges");
+ strvec_push(&args, "--rebase-merges");
else if (opt_rebase == REBASE_PRESERVE)
- argv_array_push(&args, "--preserve-merges");
+ strvec_push(&args, "--preserve-merges");
else if (opt_rebase == REBASE_INTERACTIVE)
- argv_array_push(&args, "--interactive");
+ strvec_push(&args, "--interactive");
if (opt_diffstat)
- argv_array_push(&args, opt_diffstat);
- argv_array_pushv(&args, opt_strategies.argv);
- argv_array_pushv(&args, opt_strategy_opts.argv);
+ strvec_push(&args, opt_diffstat);
+ strvec_pushv(&args, opt_strategies.v);
+ strvec_pushv(&args, opt_strategy_opts.v);
if (opt_gpg_sign)
- argv_array_push(&args, opt_gpg_sign);
+ strvec_push(&args, opt_gpg_sign);
if (opt_autostash == 0)
- argv_array_push(&args, "--no-autostash");
+ strvec_push(&args, "--no-autostash");
else if (opt_autostash == 1)
- argv_array_push(&args, "--autostash");
+ strvec_push(&args, "--autostash");
if (opt_verify_signatures &&
!strcmp(opt_verify_signatures, "--verify-signatures"))
warning(_("ignoring --verify-signatures for rebase"));
- argv_array_push(&args, "--onto");
- argv_array_push(&args, oid_to_hex(merge_head));
+ strvec_push(&args, "--onto");
+ strvec_push(&args, oid_to_hex(newbase));
- if (fork_point && !is_null_oid(fork_point))
- argv_array_push(&args, oid_to_hex(fork_point));
- else
- argv_array_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);
+ return ret;
+}
- ret = run_command_v_opt(args.argv, RUN_GIT_CMD);
- argv_array_clear(&args);
+static int get_can_ff(struct object_id *orig_head, struct object_id *orig_merge_head)
+{
+ int ret;
+ struct commit_list *list = NULL;
+ struct commit *merge_head, *head;
+
+ head = lookup_commit_reference(the_repository, orig_head);
+ commit_list_insert(head, &list);
+ merge_head = lookup_commit_reference(the_repository, orig_merge_head);
+ ret = repo_is_descendant_of(the_repository, merge_head, list);
+ free_commit_list(list);
return ret;
}
+static void show_advice_pull_non_ff(void)
+{
+ advise(_("Pulling without specifying how to reconcile divergent branches is\n"
+ "discouraged. You can squelch this message by running one of the following\n"
+ "commands sometime before your next pull:\n"
+ "\n"
+ " git config pull.rebase false # merge (the default strategy)\n"
+ " git config pull.rebase true # rebase\n"
+ " git config pull.ff only # fast-forward only\n"
+ "\n"
+ "You can replace \"git config\" with \"git config --global\" to set a default\n"
+ "preference for all repositories. You can also pass --rebase, --no-rebase,\n"
+ "or --ff-only on the command line to override the configured default per\n"
+ "invocation.\n"));
+}
+
int cmd_pull(int argc, const char **argv, const char *prefix)
{
const char *repo, **refspecs;
@@ -914,6 +948,8 @@ int cmd_pull(int argc, const char **argv, const char *prefix)
struct object_id orig_head, curr_head;
struct object_id rebase_fork_point;
int autostash;
+ int rebase_unspecified = 0;
+ int can_ff;
if (!getenv("GIT_REFLOG_ACTION"))
set_reflog_message(argc, argv);
@@ -935,7 +971,7 @@ int cmd_pull(int argc, const char **argv, const char *prefix)
opt_ff = xstrdup_or_null(config_get_ff());
if (opt_rebase < 0)
- opt_rebase = config_get_rebase();
+ opt_rebase = config_get_rebase(&rebase_unspecified);
if (read_cache_unmerged())
die_resolve_conflict("pull");
@@ -1009,23 +1045,28 @@ int cmd_pull(int argc, const char **argv, const char *prefix)
if (opt_rebase && merge_heads.nr > 1)
die(_("Cannot rebase onto multiple branches."));
+ can_ff = get_can_ff(&orig_head, &merge_heads.oid[0]);
+
+ if (rebase_unspecified && !opt_ff && !can_ff) {
+ if (opt_verbosity >= 0)
+ show_advice_pull_non_ff();
+ }
+
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))
+ submodule_touches_in_range(the_repository, &upstream, &curr_head))
die(_("cannot rebase with locally recorded submodule modifications"));
if (!autostash) {
- struct commit_list *list = NULL;
- struct commit *merge_head, *head;
-
- head = lookup_commit_reference(the_repository,
- &orig_head);
- commit_list_insert(head, &list);
- merge_head = lookup_commit_reference(the_repository,
- &merge_heads.oid[0]);
- if (is_descendant_of(merge_head, list)) {
+ if (can_ff) {
/* we can fast-forward this without invoking rebase */
opt_ff = "--ff-only";
ran_ff = 1;
@@ -1033,7 +1074,7 @@ int cmd_pull(int argc, const char **argv, const char *prefix)
}
}
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))