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-rw-r--r--builtin/merge.c216
1 files changed, 99 insertions, 117 deletions
diff --git a/builtin/merge.c b/builtin/merge.c
index b65eeaa87d..703827f006 100644
--- a/builtin/merge.c
+++ b/builtin/merge.c
@@ -44,8 +44,8 @@ struct strategy {
static const char * const builtin_merge_usage[] = {
N_("git merge [<options>] [<commit>...]"),
- N_("git merge [<options>] <msg> HEAD <commit>"),
N_("git merge --abort"),
+ N_("git merge --continue"),
NULL
};
@@ -65,6 +65,7 @@ static int option_renormalize;
static int verbosity;
static int allow_rerere_auto;
static int abort_current_merge;
+static int continue_current_merge;
static int allow_unrelated_histories;
static int show_progress = -1;
static int default_to_upstream = 1;
@@ -223,6 +224,8 @@ static struct option builtin_merge_options[] = {
OPT__VERBOSITY(&verbosity),
OPT_BOOL(0, "abort", &abort_current_merge,
N_("abort the current in-progress merge")),
+ OPT_BOOL(0, "continue", &continue_current_merge,
+ N_("continue the current in-progress merge")),
OPT_BOOL(0, "allow-unrelated-histories", &allow_unrelated_histories,
N_("allow merging unrelated histories")),
OPT_SET_INT(0, "progress", &show_progress, N_("force progress reporting"), 1),
@@ -240,7 +243,7 @@ static void drop_save(void)
unlink(git_path_merge_mode());
}
-static int save_state(unsigned char *stash)
+static int save_state(struct object_id *stash)
{
int len;
struct child_process cp = CHILD_PROCESS_INIT;
@@ -261,7 +264,7 @@ static int save_state(unsigned char *stash)
else if (!len) /* no changes */
return -1;
strbuf_setlen(&buffer, buffer.len-1);
- if (get_sha1(buffer.buf, stash))
+ if (get_oid(buffer.buf, stash))
die(_("not a valid object: %s"), buffer.buf);
return 0;
}
@@ -301,18 +304,18 @@ static void reset_hard(unsigned const char *sha1, int verbose)
die(_("read-tree failed"));
}
-static void restore_state(const unsigned char *head,
- const unsigned char *stash)
+static void restore_state(const struct object_id *head,
+ const struct object_id *stash)
{
struct strbuf sb = STRBUF_INIT;
const char *args[] = { "stash", "apply", NULL, NULL };
- if (is_null_sha1(stash))
+ if (is_null_oid(stash))
return;
- reset_hard(head, 1);
+ reset_hard(head->hash, 1);
- args[2] = sha1_to_hex(stash);
+ args[2] = oid_to_hex(stash);
/*
* It is OK to ignore error here, for example when there was
@@ -372,10 +375,10 @@ static void squash_message(struct commit *commit, struct commit_list *remotehead
static void finish(struct commit *head_commit,
struct commit_list *remoteheads,
- const unsigned char *new_head, const char *msg)
+ const struct object_id *new_head, const char *msg)
{
struct strbuf reflog_message = STRBUF_INIT;
- const unsigned char *head = head_commit->object.oid.hash;
+ const struct object_id *head = &head_commit->object.oid;
if (!msg)
strbuf_addstr(&reflog_message, getenv("GIT_REFLOG_ACTION"));
@@ -393,7 +396,7 @@ static void finish(struct commit *head_commit,
else {
const char *argv_gc_auto[] = { "gc", "--auto", NULL };
update_ref(reflog_message.buf, "HEAD",
- new_head, head, 0,
+ new_head->hash, head->hash, 0,
UPDATE_REFS_DIE_ON_ERR);
/*
* We ignore errors in 'gc --auto', since the
@@ -412,7 +415,7 @@ static void finish(struct commit *head_commit,
DIFF_FORMAT_SUMMARY | DIFF_FORMAT_DIFFSTAT;
opts.detect_rename = DIFF_DETECT_RENAME;
diff_setup_done(&opts);
- diff_tree_sha1(head, new_head, "", &opts);
+ diff_tree_sha1(head->hash, new_head->hash, "", &opts);
diffcore_std(&opts);
diff_flush(&opts);
}
@@ -427,35 +430,35 @@ static void finish(struct commit *head_commit,
static void merge_name(const char *remote, struct strbuf *msg)
{
struct commit *remote_head;
- unsigned char branch_head[20];
+ struct object_id branch_head;
struct strbuf buf = STRBUF_INIT;
struct strbuf bname = STRBUF_INIT;
const char *ptr;
char *found_ref;
int len, early;
- strbuf_branchname(&bname, remote);
+ strbuf_branchname(&bname, remote, 0);
remote = bname.buf;
- memset(branch_head, 0, sizeof(branch_head));
+ oidclr(&branch_head);
remote_head = get_merge_parent(remote);
if (!remote_head)
die(_("'%s' does not point to a commit"), remote);
- if (dwim_ref(remote, strlen(remote), branch_head, &found_ref) > 0) {
+ if (dwim_ref(remote, strlen(remote), branch_head.hash, &found_ref) > 0) {
if (starts_with(found_ref, "refs/heads/")) {
strbuf_addf(msg, "%s\t\tbranch '%s' of .\n",
- sha1_to_hex(branch_head), remote);
+ oid_to_hex(&branch_head), remote);
goto cleanup;
}
if (starts_with(found_ref, "refs/tags/")) {
strbuf_addf(msg, "%s\t\ttag '%s' of .\n",
- sha1_to_hex(branch_head), remote);
+ oid_to_hex(&branch_head), remote);
goto cleanup;
}
if (starts_with(found_ref, "refs/remotes/")) {
strbuf_addf(msg, "%s\t\tremote-tracking branch '%s' of .\n",
- sha1_to_hex(branch_head), remote);
+ oid_to_hex(&branch_head), remote);
goto cleanup;
}
}
@@ -586,8 +589,8 @@ static int git_merge_config(const char *k, const char *v, void *cb)
return git_diff_ui_config(k, v, cb);
}
-static int read_tree_trivial(unsigned char *common, unsigned char *head,
- unsigned char *one)
+static int read_tree_trivial(struct object_id *common, struct object_id *head,
+ struct object_id *one)
{
int i, nr_trees = 0;
struct tree *trees[MAX_UNPACK_TREES];
@@ -602,13 +605,13 @@ static int read_tree_trivial(unsigned char *common, unsigned char *head,
opts.verbose_update = 1;
opts.trivial_merges_only = 1;
opts.merge = 1;
- trees[nr_trees] = parse_tree_indirect(common);
+ trees[nr_trees] = parse_tree_indirect(common->hash);
if (!trees[nr_trees++])
return -1;
- trees[nr_trees] = parse_tree_indirect(head);
+ trees[nr_trees] = parse_tree_indirect(head->hash);
if (!trees[nr_trees++])
return -1;
- trees[nr_trees] = parse_tree_indirect(one);
+ trees[nr_trees] = parse_tree_indirect(one->hash);
if (!trees[nr_trees++])
return -1;
opts.fn = threeway_merge;
@@ -622,19 +625,20 @@ static int read_tree_trivial(unsigned char *common, unsigned char *head,
return 0;
}
-static void write_tree_trivial(unsigned char *sha1)
+static void write_tree_trivial(struct object_id *oid)
{
- if (write_cache_as_tree(sha1, 0, NULL))
+ if (write_cache_as_tree(oid->hash, 0, NULL))
die(_("git write-tree failed to write a tree"));
}
static int try_merge_strategy(const char *strategy, struct commit_list *common,
struct commit_list *remoteheads,
- struct commit *head, const char *head_arg)
+ struct commit *head)
{
static struct lock_file lock;
+ const char *head_arg = "HEAD";
- hold_locked_index(&lock, 1);
+ hold_locked_index(&lock, LOCK_DIE_ON_ERROR);
refresh_cache(REFRESH_QUIET);
if (active_cache_changed &&
write_locked_index(&the_index, &lock, COMMIT_LOCK))
@@ -671,7 +675,7 @@ static int try_merge_strategy(const char *strategy, struct commit_list *common,
for (j = common; j; j = j->next)
commit_list_insert(j->item, &reversed);
- hold_locked_index(&lock, 1);
+ hold_locked_index(&lock, LOCK_DIE_ON_ERROR);
clean = merge_recursive(&o, head,
remoteheads->item, reversed, &result);
if (clean < 0)
@@ -777,26 +781,26 @@ static void prepare_to_commit(struct commit_list *remoteheads)
static int merge_trivial(struct commit *head, struct commit_list *remoteheads)
{
- unsigned char result_tree[20], result_commit[20];
+ struct object_id result_tree, result_commit;
struct commit_list *parents, **pptr = &parents;
static struct lock_file lock;
- hold_locked_index(&lock, 1);
+ hold_locked_index(&lock, LOCK_DIE_ON_ERROR);
refresh_cache(REFRESH_QUIET);
if (active_cache_changed &&
write_locked_index(&the_index, &lock, COMMIT_LOCK))
return error(_("Unable to write index."));
rollback_lock_file(&lock);
- write_tree_trivial(result_tree);
+ write_tree_trivial(&result_tree);
printf(_("Wonderful.\n"));
pptr = commit_list_append(head, pptr);
pptr = commit_list_append(remoteheads->item, pptr);
prepare_to_commit(remoteheads);
- if (commit_tree(merge_msg.buf, merge_msg.len, result_tree, parents,
- result_commit, NULL, sign_commit))
+ if (commit_tree(merge_msg.buf, merge_msg.len, result_tree.hash, parents,
+ result_commit.hash, NULL, sign_commit))
die(_("failed to write commit object"));
- finish(head, remoteheads, result_commit, "In-index merge");
+ finish(head, remoteheads, &result_commit, "In-index merge");
drop_save();
return 0;
}
@@ -805,12 +809,12 @@ static int finish_automerge(struct commit *head,
int head_subsumed,
struct commit_list *common,
struct commit_list *remoteheads,
- unsigned char *result_tree,
+ struct object_id *result_tree,
const char *wt_strategy)
{
struct commit_list *parents = NULL;
struct strbuf buf = STRBUF_INIT;
- unsigned char result_commit[20];
+ struct object_id result_commit;
free_commit_list(common);
parents = remoteheads;
@@ -818,11 +822,11 @@ static int finish_automerge(struct commit *head,
commit_list_insert(head, &parents);
strbuf_addch(&merge_msg, '\n');
prepare_to_commit(remoteheads);
- if (commit_tree(merge_msg.buf, merge_msg.len, result_tree, parents,
- result_commit, NULL, sign_commit))
+ if (commit_tree(merge_msg.buf, merge_msg.len, result_tree->hash, parents,
+ result_commit.hash, NULL, sign_commit))
die(_("failed to write commit object"));
strbuf_addf(&buf, "Merge made by the '%s' strategy.", wt_strategy);
- finish(head, remoteheads, result_commit, buf.buf);
+ finish(head, remoteheads, &result_commit, buf.buf);
strbuf_release(&buf);
drop_save();
return 0;
@@ -849,24 +853,6 @@ static int suggest_conflicts(void)
return 1;
}
-static struct commit *is_old_style_invocation(int argc, const char **argv,
- const unsigned char *head)
-{
- struct commit *second_token = NULL;
- if (argc > 2) {
- unsigned char second_sha1[20];
-
- if (get_sha1(argv[1], second_sha1))
- return NULL;
- second_token = lookup_commit_reference_gently(second_sha1, 0);
- if (!second_token)
- die(_("'%s' is not a commit"), argv[1]);
- if (hashcmp(second_token->object.oid.hash, head))
- return NULL;
- }
- return second_token;
-}
-
static int evaluate_result(void)
{
int cnt = 0;
@@ -1034,7 +1020,7 @@ static void handle_fetch_head(struct commit_list **remotes, struct strbuf *merge
die_errno(_("could not close '%s'"), filename);
for (pos = 0; pos < merge_names->len; pos = npos) {
- unsigned char sha1[20];
+ struct object_id oid;
char *ptr;
struct commit *commit;
@@ -1044,16 +1030,16 @@ static void handle_fetch_head(struct commit_list **remotes, struct strbuf *merge
else
npos = merge_names->len;
- if (npos - pos < 40 + 2 ||
- get_sha1_hex(merge_names->buf + pos, sha1))
+ if (npos - pos < GIT_SHA1_HEXSZ + 2 ||
+ get_oid_hex(merge_names->buf + pos, &oid))
commit = NULL; /* bad */
- else if (memcmp(merge_names->buf + pos + 40, "\t\t", 2))
+ else if (memcmp(merge_names->buf + pos + GIT_SHA1_HEXSZ, "\t\t", 2))
continue; /* not-for-merge */
else {
- char saved = merge_names->buf[pos + 40];
- merge_names->buf[pos + 40] = '\0';
+ char saved = merge_names->buf[pos + GIT_SHA1_HEXSZ];
+ merge_names->buf[pos + GIT_SHA1_HEXSZ] = '\0';
commit = get_merge_parent(merge_names->buf + pos);
- merge_names->buf[pos + 40] = saved;
+ merge_names->buf[pos + GIT_SHA1_HEXSZ] = saved;
}
if (!commit) {
if (ptr)
@@ -1113,18 +1099,16 @@ static struct commit_list *collect_parents(struct commit *head_commit,
int cmd_merge(int argc, const char **argv, const char *prefix)
{
- unsigned char result_tree[20];
- unsigned char stash[20];
- unsigned char head_sha1[20];
+ struct object_id result_tree, stash, head_oid;
struct commit *head_commit;
struct strbuf buf = STRBUF_INIT;
- const char *head_arg;
int i, ret = 0, head_subsumed;
int best_cnt = -1, merge_was_ok = 0, automerge_was_ok = 0;
struct commit_list *common = NULL;
const char *best_strategy = NULL, *wt_strategy = NULL;
struct commit_list *remoteheads, *p;
void *branch_to_free;
+ int orig_argc = argc;
if (argc == 2 && !strcmp(argv[1], "-h"))
usage_with_options(builtin_merge_usage, builtin_merge_options);
@@ -1133,13 +1117,13 @@ int cmd_merge(int argc, const char **argv, const char *prefix)
* Check if we are _not_ on a detached HEAD, i.e. if there is a
* current branch.
*/
- branch = branch_to_free = resolve_refdup("HEAD", 0, head_sha1, NULL);
+ branch = branch_to_free = resolve_refdup("HEAD", 0, head_oid.hash, NULL);
if (branch && starts_with(branch, "refs/heads/"))
branch += 11;
- if (!branch || is_null_sha1(head_sha1))
+ if (!branch || is_null_oid(&head_oid))
head_commit = NULL;
else
- head_commit = lookup_commit_or_die(head_sha1, "HEAD");
+ head_commit = lookup_commit_or_die(head_oid.hash, "HEAD");
init_diff_ui_defaults();
git_config(git_merge_config, NULL);
@@ -1158,6 +1142,10 @@ int cmd_merge(int argc, const char **argv, const char *prefix)
int nargc = 2;
const char *nargv[] = {"reset", "--merge", NULL};
+ if (orig_argc != 2)
+ usage_msg_opt(_("--abort expects no arguments"),
+ builtin_merge_usage, builtin_merge_options);
+
if (!file_exists(git_path_merge_head()))
die(_("There is no merge to abort (MERGE_HEAD missing)."));
@@ -1166,6 +1154,22 @@ int cmd_merge(int argc, const char **argv, const char *prefix)
goto done;
}
+ if (continue_current_merge) {
+ int nargc = 1;
+ const char *nargv[] = {"commit", NULL};
+
+ if (orig_argc != 2)
+ usage_msg_opt(_("--continue expects no arguments"),
+ builtin_merge_usage, builtin_merge_options);
+
+ if (!file_exists(git_path_merge_head()))
+ die(_("There is no merge in progress (MERGE_HEAD missing)."));
+
+ /* Invoke 'git commit' */
+ ret = cmd_commit(nargc, nargv, prefix);
+ goto done;
+ }
+
if (read_cache_unmerged())
die_resolve_conflict("merge");
@@ -1217,7 +1221,7 @@ int cmd_merge(int argc, const char **argv, const char *prefix)
* to forbid "git merge" into a branch yet to be born.
* We do the same for "git pull".
*/
- unsigned char *remote_head_sha1;
+ struct object_id *remote_head_oid;
if (squash)
die(_("Squash commit into empty head not supported yet"));
if (fast_forward == FF_NO)
@@ -1229,42 +1233,20 @@ int cmd_merge(int argc, const char **argv, const char *prefix)
die(_("%s - not something we can merge"), argv[0]);
if (remoteheads->next)
die(_("Can merge only exactly one commit into empty head"));
- remote_head_sha1 = remoteheads->item->object.oid.hash;
- read_empty(remote_head_sha1, 0);
- update_ref("initial pull", "HEAD", remote_head_sha1,
+ remote_head_oid = &remoteheads->item->object.oid;
+ read_empty(remote_head_oid->hash, 0);
+ update_ref("initial pull", "HEAD", remote_head_oid->hash,
NULL, 0, UPDATE_REFS_DIE_ON_ERR);
goto done;
}
/*
- * This could be traditional "merge <msg> HEAD <commit>..." and
- * the way we can tell it is to see if the second token is HEAD,
- * but some people might have misused the interface and used a
- * commit-ish that is the same as HEAD there instead.
- * Traditional format never would have "-m" so it is an
- * additional safety measure to check for it.
+ * All the rest are the commits being merged; prepare
+ * the standard merge summary message to be appended
+ * to the given message.
*/
- if (!have_message &&
- is_old_style_invocation(argc, argv, head_commit->object.oid.hash)) {
- warning("old-style 'git merge <msg> HEAD <commit>' is deprecated.");
- strbuf_addstr(&merge_msg, argv[0]);
- head_arg = argv[1];
- argv += 2;
- argc -= 2;
- remoteheads = collect_parents(head_commit, &head_subsumed,
- argc, argv, NULL);
- } else {
- /* We are invoked directly as the first-class UI. */
- head_arg = "HEAD";
-
- /*
- * All the rest are the commits being merged; prepare
- * the standard merge summary message to be appended
- * to the given message.
- */
- remoteheads = collect_parents(head_commit, &head_subsumed,
- argc, argv, &merge_msg);
- }
+ remoteheads = collect_parents(head_commit, &head_subsumed,
+ argc, argv, &merge_msg);
if (!head_commit || !argc)
usage_with_options(builtin_merge_usage,
@@ -1273,7 +1255,7 @@ int cmd_merge(int argc, const char **argv, const char *prefix)
if (verify_signatures) {
for (p = remoteheads; p; p = p->next) {
struct commit *commit = p->item;
- char hex[GIT_SHA1_HEXSZ + 1];
+ char hex[GIT_MAX_HEXSZ + 1];
struct signature_check signature_check;
memset(&signature_check, 0, sizeof(signature_check));
@@ -1397,7 +1379,7 @@ int cmd_merge(int argc, const char **argv, const char *prefix)
goto done;
}
- finish(head_commit, remoteheads, commit->object.oid.hash, msg.buf);
+ finish(head_commit, remoteheads, &commit->object.oid, msg.buf);
drop_save();
goto done;
} else if (!remoteheads->next && common->next)
@@ -1416,9 +1398,9 @@ int cmd_merge(int argc, const char **argv, const char *prefix)
/* See if it is really trivial. */
git_committer_info(IDENT_STRICT);
printf(_("Trying really trivial in-index merge...\n"));
- if (!read_tree_trivial(common->item->object.oid.hash,
- head_commit->object.oid.hash,
- remoteheads->item->object.oid.hash)) {
+ if (!read_tree_trivial(&common->item->object.oid,
+ &head_commit->object.oid,
+ &remoteheads->item->object.oid)) {
ret = merge_trivial(head_commit, remoteheads);
goto done;
}
@@ -1470,14 +1452,14 @@ int cmd_merge(int argc, const char **argv, const char *prefix)
/*
* Stash away the local changes so that we can try more than one.
*/
- save_state(stash))
- hashclr(stash);
+ save_state(&stash))
+ oidclr(&stash);
for (i = 0; i < use_strategies_nr; i++) {
int ret;
if (i) {
printf(_("Rewinding the tree to pristine...\n"));
- restore_state(head_commit->object.oid.hash, stash);
+ restore_state(&head_commit->object.oid, &stash);
}
if (use_strategies_nr != 1)
printf(_("Trying merge strategy %s...\n"),
@@ -1490,7 +1472,7 @@ int cmd_merge(int argc, const char **argv, const char *prefix)
ret = try_merge_strategy(use_strategies[i]->name,
common, remoteheads,
- head_commit, head_arg);
+ head_commit);
if (!option_commit && !ret) {
merge_was_ok = 1;
/*
@@ -1522,7 +1504,7 @@ int cmd_merge(int argc, const char **argv, const char *prefix)
}
/* Automerge succeeded. */
- write_tree_trivial(result_tree);
+ write_tree_trivial(&result_tree);
automerge_was_ok = 1;
break;
}
@@ -1534,7 +1516,7 @@ int cmd_merge(int argc, const char **argv, const char *prefix)
if (automerge_was_ok) {
ret = finish_automerge(head_commit, head_subsumed,
common, remoteheads,
- result_tree, wt_strategy);
+ &result_tree, wt_strategy);
goto done;
}
@@ -1543,7 +1525,7 @@ int cmd_merge(int argc, const char **argv, const char *prefix)
* it up.
*/
if (!best_strategy) {
- restore_state(head_commit->object.oid.hash, stash);
+ restore_state(&head_commit->object.oid, &stash);
if (use_strategies_nr > 1)
fprintf(stderr,
_("No merge strategy handled the merge.\n"));
@@ -1556,11 +1538,11 @@ int cmd_merge(int argc, const char **argv, const char *prefix)
; /* We already have its result in the working tree. */
else {
printf(_("Rewinding the tree to pristine...\n"));
- restore_state(head_commit->object.oid.hash, stash);
+ restore_state(&head_commit->object.oid, &stash);
printf(_("Using the %s to prepare resolving by hand.\n"),
best_strategy);
try_merge_strategy(best_strategy, common, remoteheads,
- head_commit, head_arg);
+ head_commit);
}
if (squash)
generated by cgit v1.2.3 (git 2.25.1) at 2024-11-27 08:59:11 +0000