* Fetch one or more remote refs and merge it/them into the current HEAD.
*/
#include "cache.h"
+#include "config.h"
#include "builtin.h"
#include "parse-options.h"
#include "exec_cmd.h"
#include "dir.h"
#include "refs.h"
#include "revision.h"
+#include "submodule.h"
+#include "submodule-config.h"
#include "tempfile.h"
#include "lockfile.h"
+#include "wt-status.h"
enum rebase_type {
REBASE_INVALID = -1,
/* Shared options */
static int opt_verbosity;
static char *opt_progress;
+static int recurse_submodules = RECURSE_SUBMODULES_DEFAULT;
/* Options passed to git-merge or git-rebase */
static enum rebase_type opt_rebase = -1;
static int opt_force;
static char *opt_tags;
static char *opt_prune;
-static char *opt_recurse_submodules;
static char *max_children;
static int opt_dry_run;
static char *opt_keep;
OPT_PASSTHRU(0, "progress", &opt_progress, NULL,
N_("force progress reporting"),
PARSE_OPT_NOARG),
+ { OPTION_CALLBACK, 0, "recurse-submodules",
+ &recurse_submodules, N_("on-demand"),
+ N_("control for recursive fetching of submodules"),
+ PARSE_OPT_OPTARG, option_fetch_parse_recurse_submodules },
/* Options passed to git-merge or git-rebase */
OPT_GROUP(N_("Options related to merging")),
OPT_PASSTHRU('p', "prune", &opt_prune, NULL,
N_("prune remote-tracking branches no longer on remote"),
PARSE_OPT_NOARG),
- OPT_PASSTHRU(0, "recurse-submodules", &opt_recurse_submodules,
- N_("on-demand"),
- N_("control recursive fetching of submodules"),
- PARSE_OPT_OPTARG),
OPT_PASSTHRU('j', "jobs", &max_children, N_("n"),
N_("number of submodules pulled in parallel"),
PARSE_OPT_OPTARG),
return git_default_config(var, value, cb);
}
-/**
- * Returns 1 if there are unstaged changes, 0 otherwise.
- */
-static int has_unstaged_changes(const char *prefix)
-{
- struct rev_info rev_info;
- int result;
-
- init_revisions(&rev_info, prefix);
- DIFF_OPT_SET(&rev_info.diffopt, IGNORE_SUBMODULES);
- DIFF_OPT_SET(&rev_info.diffopt, QUICK);
- diff_setup_done(&rev_info.diffopt);
- result = run_diff_files(&rev_info, 0);
- return diff_result_code(&rev_info.diffopt, result);
-}
-
-/**
- * Returns 1 if there are uncommitted changes, 0 otherwise.
- */
-static int has_uncommitted_changes(const char *prefix)
-{
- struct rev_info rev_info;
- int result;
-
- if (is_cache_unborn())
- return 0;
-
- init_revisions(&rev_info, prefix);
- DIFF_OPT_SET(&rev_info.diffopt, IGNORE_SUBMODULES);
- DIFF_OPT_SET(&rev_info.diffopt, QUICK);
- add_head_to_pending(&rev_info);
- diff_setup_done(&rev_info.diffopt);
- result = run_diff_index(&rev_info, 1);
- return diff_result_code(&rev_info.diffopt, result);
-}
-
-/**
- * If the work tree has unstaged or uncommitted changes, dies with the
- * appropriate message.
- */
-static void die_on_unclean_work_tree(const char *prefix)
-{
- struct lock_file *lock_file = xcalloc(1, sizeof(*lock_file));
- int do_die = 0;
-
- hold_locked_index(lock_file, 0);
- refresh_cache(REFRESH_QUIET);
- update_index_if_able(&the_index, lock_file);
- rollback_lock_file(lock_file);
-
- if (has_unstaged_changes(prefix)) {
- error(_("Cannot pull with rebase: You have unstaged changes."));
- do_die = 1;
- }
-
- if (has_uncommitted_changes(prefix)) {
- if (do_die)
- error(_("Additionally, your index contains uncommitted changes."));
- else
- error(_("Cannot pull with rebase: Your index contains uncommitted changes."));
- do_die = 1;
- }
-
- if (do_die)
- exit(1);
-}
-
/**
* Appends merge candidates from FETCH_HEAD that are not marked not-for-merge
* into merge_heads.
*/
-static void get_merge_heads(struct sha1_array *merge_heads)
+static void get_merge_heads(struct oid_array *merge_heads)
{
- const char *filename = git_path("FETCH_HEAD");
+ const char *filename = git_path_fetch_head();
FILE *fp;
struct strbuf sb = STRBUF_INIT;
- unsigned char sha1[GIT_SHA1_RAWSZ];
+ struct object_id oid;
- if (!(fp = fopen(filename, "r")))
- die_errno(_("could not open '%s' for reading"), filename);
+ fp = xfopen(filename, "r");
while (strbuf_getline_lf(&sb, fp) != EOF) {
- if (get_sha1_hex(sb.buf, sha1))
+ if (get_oid_hex(sb.buf, &oid))
continue; /* invalid line: does not start with SHA1 */
if (starts_with(sb.buf + GIT_SHA1_HEXSZ, "\tnot-for-merge\t"))
continue; /* ref is not-for-merge */
- sha1_array_append(merge_heads, sha1);
+ oid_array_append(merge_heads, &oid);
}
fclose(fp);
strbuf_release(&sb);
argv_array_push(&args, opt_tags);
if (opt_prune)
argv_array_push(&args, opt_prune);
- if (opt_recurse_submodules)
- argv_array_push(&args, opt_recurse_submodules);
+ if (recurse_submodules != RECURSE_SUBMODULES_DEFAULT)
+ switch (recurse_submodules) {
+ case RECURSE_SUBMODULES_ON:
+ argv_array_push(&args, "--recurse-submodules=on");
+ break;
+ case RECURSE_SUBMODULES_OFF:
+ argv_array_push(&args, "--recurse-submodules=no");
+ break;
+ case RECURSE_SUBMODULES_ON_DEMAND:
+ argv_array_push(&args, "--recurse-submodules=on-demand");
+ break;
+ default:
+ BUG("submodule recursion option not understood");
+ }
if (max_children)
argv_array_push(&args, max_children);
if (opt_dry_run)
/**
* "Pulls into void" by branching off merge_head.
*/
-static int pull_into_void(const unsigned char *merge_head,
- const unsigned char *curr_head)
+static int pull_into_void(const struct object_id *merge_head,
+ const struct object_id *curr_head)
{
/*
* Two-way merge: we treat the index as based on an empty tree,
* index/worktree changes that the user already made on the unborn
* branch.
*/
- if (checkout_fast_forward(EMPTY_TREE_SHA1_BIN, merge_head, 0))
+ if (checkout_fast_forward(&empty_tree_oid, merge_head, 0))
return 1;
- if (update_ref("initial pull", "HEAD", merge_head, curr_head, 0, UPDATE_REFS_DIE_ON_ERR))
+ if (update_ref("initial pull", "HEAD", merge_head->hash, curr_head->hash, 0, UPDATE_REFS_DIE_ON_ERR))
return 1;
return 0;
}
+static int rebase_submodules(void)
+{
+ struct child_process cp = CHILD_PROCESS_INIT;
+
+ cp.git_cmd = 1;
+ cp.no_stdin = 1;
+ argv_array_pushl(&cp.args, "submodule", "update",
+ "--recursive", "--rebase", NULL);
+
+ return run_command(&cp);
+}
+
+static int update_submodules(void)
+{
+ struct child_process cp = CHILD_PROCESS_INIT;
+
+ cp.git_cmd = 1;
+ cp.no_stdin = 1;
+ argv_array_pushl(&cp.args, "submodule", "update",
+ "--recursive", "--checkout", NULL);
+
+ return run_command(&cp);
+}
+
/**
* Runs git-merge, returning its exit status.
*/
* current branch forked from its remote tracking branch. Returns 0 on success,
* -1 on failure.
*/
-static int get_rebase_fork_point(unsigned char *fork_point, const char *repo,
+static int get_rebase_fork_point(struct object_id *fork_point, const char *repo,
const char *refspec)
{
int ret;
if (ret)
goto cleanup;
- ret = get_sha1_hex(sb.buf, fork_point);
+ ret = get_oid_hex(sb.buf, fork_point);
if (ret)
goto cleanup;
* Sets merge_base to the octopus merge base of curr_head, merge_head and
* fork_point. Returns 0 if a merge base is found, 1 otherwise.
*/
-static int get_octopus_merge_base(unsigned char *merge_base,
- const unsigned char *curr_head,
- const unsigned char *merge_head,
- const unsigned char *fork_point)
+static int get_octopus_merge_base(struct object_id *merge_base,
+ const struct object_id *curr_head,
+ const struct object_id *merge_head,
+ const struct object_id *fork_point)
{
struct commit_list *revs = NULL, *result;
commit_list_insert(lookup_commit_reference(curr_head), &revs);
commit_list_insert(lookup_commit_reference(merge_head), &revs);
- if (!is_null_sha1(fork_point))
+ if (!is_null_oid(fork_point))
commit_list_insert(lookup_commit_reference(fork_point), &revs);
result = reduce_heads(get_octopus_merge_bases(revs));
if (!result)
return 1;
- hashcpy(merge_base, result->item->object.oid.hash);
+ oidcpy(merge_base, &result->item->object.oid);
return 0;
}
* fork point calculated by get_rebase_fork_point(), runs git-rebase with the
* appropriate arguments and returns its exit status.
*/
-static int run_rebase(const unsigned char *curr_head,
- const unsigned char *merge_head,
- const unsigned char *fork_point)
+static int run_rebase(const struct object_id *curr_head,
+ const struct object_id *merge_head,
+ const struct object_id *fork_point)
{
int ret;
- unsigned char oct_merge_base[GIT_SHA1_RAWSZ];
+ 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_sha1(fork_point) && !hashcmp(oct_merge_base, fork_point))
+ if (!get_octopus_merge_base(&oct_merge_base, curr_head, merge_head, fork_point))
+ if (!is_null_oid(fork_point) && !oidcmp(&oct_merge_base, fork_point))
fork_point = NULL;
argv_array_push(&args, "rebase");
warning(_("ignoring --verify-signatures for rebase"));
argv_array_push(&args, "--onto");
- argv_array_push(&args, sha1_to_hex(merge_head));
+ argv_array_push(&args, oid_to_hex(merge_head));
- if (fork_point && !is_null_sha1(fork_point))
- argv_array_push(&args, sha1_to_hex(fork_point));
+ if (fork_point && !is_null_oid(fork_point))
+ argv_array_push(&args, oid_to_hex(fork_point));
else
- argv_array_push(&args, sha1_to_hex(merge_head));
+ argv_array_push(&args, oid_to_hex(merge_head));
ret = run_command_v_opt(args.argv, RUN_GIT_CMD);
argv_array_clear(&args);
int cmd_pull(int argc, const char **argv, const char *prefix)
{
const char *repo, **refspecs;
- struct sha1_array merge_heads = SHA1_ARRAY_INIT;
- unsigned char orig_head[GIT_SHA1_RAWSZ], curr_head[GIT_SHA1_RAWSZ];
- unsigned char rebase_fork_point[GIT_SHA1_RAWSZ];
+ struct oid_array merge_heads = OID_ARRAY_INIT;
+ struct object_id orig_head, curr_head;
+ struct object_id rebase_fork_point;
+ int autostash;
if (!getenv("GIT_REFLOG_ACTION"))
set_reflog_message(argc, argv);
if (read_cache_unmerged())
die_resolve_conflict("pull");
- if (file_exists(git_path("MERGE_HEAD")))
+ if (file_exists(git_path_merge_head()))
die_conclude_merge();
- if (get_sha1("HEAD", orig_head))
- hashclr(orig_head);
+ if (get_oid("HEAD", &orig_head))
+ oidclr(&orig_head);
if (!opt_rebase && opt_autostash != -1)
die(_("--[no-]autostash option is only valid with --rebase."));
+ autostash = config_autostash;
if (opt_rebase) {
- int autostash = config_autostash;
if (opt_autostash != -1)
autostash = opt_autostash;
- if (is_null_sha1(orig_head) && !is_cache_unborn())
+ if (is_null_oid(&orig_head) && !is_cache_unborn())
die(_("Updating an unborn branch with changes added to the index."));
if (!autostash)
- die_on_unclean_work_tree(prefix);
+ require_clean_work_tree(N_("pull with rebase"),
+ _("please commit or stash them."), 1, 0);
- if (get_rebase_fork_point(rebase_fork_point, repo, *refspecs))
- hashclr(rebase_fork_point);
+ if (get_rebase_fork_point(&rebase_fork_point, repo, *refspecs))
+ oidclr(&rebase_fork_point);
}
if (run_fetch(repo, refspecs))
if (opt_dry_run)
return 0;
- if (get_sha1("HEAD", curr_head))
- hashclr(curr_head);
+ if (get_oid("HEAD", &curr_head))
+ oidclr(&curr_head);
- if (!is_null_sha1(orig_head) && !is_null_sha1(curr_head) &&
- hashcmp(orig_head, curr_head)) {
+ if (!is_null_oid(&orig_head) && !is_null_oid(&curr_head) &&
+ oidcmp(&orig_head, &curr_head)) {
/*
* The fetch involved updating the current branch.
*
warning(_("fetch updated the current branch head.\n"
"fast-forwarding your working tree from\n"
- "commit %s."), sha1_to_hex(orig_head));
+ "commit %s."), oid_to_hex(&orig_head));
- if (checkout_fast_forward(orig_head, curr_head, 0))
+ if (checkout_fast_forward(&orig_head, &curr_head, 0))
die(_("Cannot fast-forward your working tree.\n"
"After making sure that you saved anything precious from\n"
"$ git diff %s\n"
"output, run\n"
"$ git reset --hard\n"
- "to recover."), sha1_to_hex(orig_head));
+ "to recover."), oid_to_hex(&orig_head));
}
get_merge_heads(&merge_heads);
if (!merge_heads.nr)
die_no_merge_candidates(repo, refspecs);
- if (is_null_sha1(orig_head)) {
+ if (is_null_oid(&orig_head)) {
if (merge_heads.nr > 1)
die(_("Cannot merge multiple branches into empty head."));
- return pull_into_void(*merge_heads.sha1, curr_head);
- } else if (opt_rebase) {
- if (merge_heads.nr > 1)
- die(_("Cannot rebase onto multiple branches."));
- return run_rebase(curr_head, *merge_heads.sha1, rebase_fork_point);
- } else
- return run_merge();
+ return pull_into_void(merge_heads.oid, &curr_head);
+ }
+ if (opt_rebase && merge_heads.nr > 1)
+ die(_("Cannot rebase onto multiple branches."));
+
+ if (opt_rebase) {
+ int ret = 0;
+ if ((recurse_submodules == RECURSE_SUBMODULES_ON ||
+ recurse_submodules == RECURSE_SUBMODULES_ON_DEMAND) &&
+ submodule_touches_in_range(&rebase_fork_point, &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(&orig_head);
+ commit_list_insert(head, &list);
+ merge_head = lookup_commit_reference(&merge_heads.oid[0]);
+ if (is_descendant_of(merge_head, list)) {
+ /* we can fast-forward this without invoking rebase */
+ opt_ff = "--ff-only";
+ ret = run_merge();
+ }
+ }
+ ret = run_rebase(&curr_head, merge_heads.oid, &rebase_fork_point);
+
+ if (!ret && (recurse_submodules == RECURSE_SUBMODULES_ON ||
+ recurse_submodules == RECURSE_SUBMODULES_ON_DEMAND))
+ ret = rebase_submodules();
+
+ return ret;
+ } else {
+ int ret = run_merge();
+ if (!ret && (recurse_submodules == RECURSE_SUBMODULES_ON ||
+ recurse_submodules == RECURSE_SUBMODULES_ON_DEMAND))
+ ret = update_submodules();
+ return ret;
+ }
}