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Diffstat (limited to 'builtin-merge.c')
-rw-r--r--builtin-merge.c150
1 files changed, 112 insertions, 38 deletions
diff --git a/builtin-merge.c b/builtin-merge.c
index dcaf3681dc..5c65a58699 100644
--- a/builtin-merge.c
+++ b/builtin-merge.c
@@ -22,6 +22,8 @@
#include "log-tree.h"
#include "color.h"
#include "rerere.h"
+#include "help.h"
+#include "merge-recursive.h"
#define DEFAULT_TWOHEAD (1<<0)
#define DEFAULT_OCTOPUS (1<<1)
@@ -77,7 +79,9 @@ static int option_parse_message(const struct option *opt,
static struct strategy *get_strategy(const char *name)
{
int i;
- struct strbuf err;
+ struct strategy *ret;
+ static struct cmdnames main_cmds, other_cmds;
+ static int loaded;
if (!name)
return NULL;
@@ -86,12 +90,43 @@ static struct strategy *get_strategy(const char *name)
if (!strcmp(name, all_strategy[i].name))
return &all_strategy[i];
- strbuf_init(&err, 0);
- for (i = 0; i < ARRAY_SIZE(all_strategy); i++)
- strbuf_addf(&err, " %s", all_strategy[i].name);
- fprintf(stderr, "Could not find merge strategy '%s'.\n", name);
- fprintf(stderr, "Available strategies are:%s.\n", err.buf);
- exit(1);
+ if (!loaded) {
+ struct cmdnames not_strategies;
+ loaded = 1;
+
+ memset(&not_strategies, 0, sizeof(struct cmdnames));
+ load_command_list("git-merge-", &main_cmds, &other_cmds);
+ for (i = 0; i < main_cmds.cnt; i++) {
+ int j, found = 0;
+ struct cmdname *ent = main_cmds.names[i];
+ for (j = 0; j < ARRAY_SIZE(all_strategy); j++)
+ if (!strncmp(ent->name, all_strategy[j].name, ent->len)
+ && !all_strategy[j].name[ent->len])
+ found = 1;
+ if (!found)
+ add_cmdname(&not_strategies, ent->name, ent->len);
+ exclude_cmds(&main_cmds, &not_strategies);
+ }
+ }
+ if (!is_in_cmdlist(&main_cmds, name) && !is_in_cmdlist(&other_cmds, name)) {
+ fprintf(stderr, "Could not find merge strategy '%s'.\n", name);
+ fprintf(stderr, "Available strategies are:");
+ for (i = 0; i < main_cmds.cnt; i++)
+ fprintf(stderr, " %s", main_cmds.names[i]->name);
+ fprintf(stderr, ".\n");
+ if (other_cmds.cnt) {
+ fprintf(stderr, "Available custom strategies are:");
+ for (i = 0; i < other_cmds.cnt; i++)
+ fprintf(stderr, " %s", other_cmds.names[i]->name);
+ fprintf(stderr, ".\n");
+ }
+ exit(1);
+ }
+
+ ret = xmalloc(sizeof(struct strategy));
+ memset(ret, 0, sizeof(struct strategy));
+ ret->name = xstrdup(name);
+ return ret;
}
static void append_strategy(struct strategy *s)
@@ -513,28 +548,65 @@ static int try_merge_strategy(const char *strategy, struct commit_list *common,
struct commit_list *j;
struct strbuf buf;
- args = xmalloc((4 + commit_list_count(common) +
- commit_list_count(remoteheads)) * sizeof(char *));
- strbuf_init(&buf, 0);
- strbuf_addf(&buf, "merge-%s", strategy);
- args[i++] = buf.buf;
- for (j = common; j; j = j->next)
- args[i++] = xstrdup(sha1_to_hex(j->item->object.sha1));
- args[i++] = "--";
- args[i++] = head_arg;
- for (j = remoteheads; j; j = j->next)
- args[i++] = xstrdup(sha1_to_hex(j->item->object.sha1));
- args[i] = NULL;
- ret = run_command_v_opt(args, RUN_GIT_CMD);
- strbuf_release(&buf);
- i = 1;
- for (j = common; j; j = j->next)
- free((void *)args[i++]);
- i += 2;
- for (j = remoteheads; j; j = j->next)
- free((void *)args[i++]);
- free(args);
- return -ret;
+ if (!strcmp(strategy, "recursive") || !strcmp(strategy, "subtree")) {
+ int clean;
+ struct commit *result;
+ struct lock_file *lock = xcalloc(1, sizeof(struct lock_file));
+ int index_fd;
+ struct commit_list *reversed = NULL;
+ struct merge_options o;
+
+ if (remoteheads->next) {
+ error("Not handling anything other than two heads merge.");
+ return 2;
+ }
+
+ init_merge_options(&o);
+ if (!strcmp(strategy, "subtree"))
+ o.subtree_merge = 1;
+
+ o.branch1 = head_arg;
+ o.branch2 = remoteheads->item->util;
+
+ for (j = common; j; j = j->next)
+ commit_list_insert(j->item, &reversed);
+
+ index_fd = hold_locked_index(lock, 1);
+ clean = merge_recursive(&o, lookup_commit(head),
+ remoteheads->item, reversed, &result);
+ if (active_cache_changed &&
+ (write_cache(index_fd, active_cache, active_nr) ||
+ commit_locked_index(lock)))
+ die ("unable to write %s", get_index_file());
+ rollback_lock_file(lock);
+ return clean ? 0 : 1;
+ } else {
+ args = xmalloc((4 + commit_list_count(common) +
+ commit_list_count(remoteheads)) * sizeof(char *));
+ strbuf_init(&buf, 0);
+ strbuf_addf(&buf, "merge-%s", strategy);
+ args[i++] = buf.buf;
+ for (j = common; j; j = j->next)
+ args[i++] = xstrdup(sha1_to_hex(j->item->object.sha1));
+ args[i++] = "--";
+ args[i++] = head_arg;
+ for (j = remoteheads; j; j = j->next)
+ args[i++] = xstrdup(sha1_to_hex(j->item->object.sha1));
+ args[i] = NULL;
+ ret = run_command_v_opt(args, RUN_GIT_CMD);
+ strbuf_release(&buf);
+ i = 1;
+ for (j = common; j; j = j->next)
+ free((void *)args[i++]);
+ i += 2;
+ for (j = remoteheads; j; j = j->next)
+ free((void *)args[i++]);
+ free(args);
+ discard_cache();
+ if (read_cache() < 0)
+ die("failed to read the cache");
+ return -ret;
+ }
}
static void count_diff_files(struct diff_queue_struct *q,
@@ -659,7 +731,7 @@ static int merge_trivial(void)
parent->next = xmalloc(sizeof(struct commit_list *));
parent->next->item = remoteheads->item;
parent->next->next = NULL;
- commit_tree(merge_msg.buf, result_tree, parent, result_commit);
+ commit_tree(merge_msg.buf, result_tree, parent, result_commit, NULL);
finish(result_commit, "In-index merge");
drop_save();
return 0;
@@ -688,7 +760,7 @@ static int finish_automerge(struct commit_list *common,
}
free_commit_list(remoteheads);
strbuf_addch(&merge_msg, '\n');
- commit_tree(merge_msg.buf, result_tree, parents, result_commit);
+ commit_tree(merge_msg.buf, result_tree, parents, result_commit, NULL);
strbuf_addf(&buf, "Merge made by %s.", wt_strategy);
finish(result_commit, buf.buf);
strbuf_release(&buf);
@@ -745,10 +817,6 @@ static int evaluate_result(void)
int cnt = 0;
struct rev_info rev;
- discard_cache();
- if (read_cache() < 0)
- die("failed to read the cache");
-
/* Check how many files differ. */
init_revisions(&rev, "");
setup_revisions(0, NULL, &rev, NULL);
@@ -836,6 +904,11 @@ int cmd_merge(int argc, const char **argv, const char *prefix)
if (argc != 1)
die("Can merge only exactly one commit into "
"empty head");
+ if (squash)
+ die("Squash commit into empty head not supported yet");
+ if (!allow_fast_forward)
+ die("Non-fast-forward commit does not make sense into "
+ "an empty head");
remote_head = peel_to_type(argv[0], 0, NULL, OBJ_COMMIT);
if (!remote_head)
die("%s - not something we can merge", argv[0]);
@@ -877,12 +950,14 @@ int cmd_merge(int argc, const char **argv, const char *prefix)
for (i = 0; i < argc; i++) {
struct object *o;
+ struct commit *commit;
o = peel_to_type(argv[i], 0, NULL, OBJ_COMMIT);
if (!o)
die("%s - not something we can merge", argv[i]);
- remotes = &commit_list_insert(lookup_commit(o->sha1),
- remotes)->next;
+ commit = lookup_commit(o->sha1);
+ commit->util = (void *)argv[i];
+ remotes = &commit_list_insert(commit, remotes)->next;
strbuf_addf(&buf, "GITHEAD_%s", sha1_to_hex(o->sha1));
setenv(buf.buf, argv[i], 1);
@@ -1076,7 +1151,6 @@ int cmd_merge(int argc, const char **argv, const char *prefix)
}
/* Automerge succeeded. */
- discard_cache();
write_tree_trivial(result_tree);
automerge_was_ok = 1;
break;
generated by cgit v1.2.3 (git 2.25.1) at 2024-11-19 15:26:48 +0000