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diff --git a/builtin/revert.c b/builtin/revert.c
index 7d68ef714eee5011d82952ca1829016c90827f61..7976b5a3295d4c70f003212485680f4dd3ceead2 100644 (file)
--- a/builtin/revert.c
+++ b/builtin/revert.c
static int allow_rerere_auto;
static const char *me;
+static const char *strategy;
#define GIT_REFLOG_ACTION "GIT_REFLOG_ACTION"
OPT_BOOLEAN('s', "signoff", &signoff, "add Signed-off-by:"),
OPT_INTEGER('m', "mainline", &mainline, "parent number"),
OPT_RERERE_AUTOUPDATE(&allow_rerere_auto),
+ OPT_STRING(0, "strategy", &strategy, "strategy", "merge strategy"),
OPT_END(),
OPT_END(),
OPT_END(),
return NULL;
}
-static struct lock_file msg_file;
-static int msg_fd;
-
-static void add_to_msg(const char *string)
-{
- int len = strlen(string);
- if (write_in_full(msg_fd, string, len) < 0)
- die_errno ("Could not write to MERGE_MSG");
-}
-
-static void add_message_to_msg(const char *message)
+static void add_message_to_msg(struct strbuf *msgbuf, const char *message)
{
const char *p = message;
while (*p && (*p != '\n' || p[1] != '\n'))
p++;
if (!*p)
- add_to_msg(sha1_to_hex(commit->object.sha1));
+ strbuf_addstr(msgbuf, sha1_to_hex(commit->object.sha1));
p += 2;
- add_to_msg(p);
- return;
+ strbuf_addstr(msgbuf, p);
}
static void set_author_ident_env(const char *message)
return strbuf_detach(&helpbuf, NULL);
}
+static void write_message(struct strbuf *msgbuf, const char *filename)
+{
+ static struct lock_file msg_file;
+
+ int msg_fd = hold_lock_file_for_update(&msg_file, filename,
+ LOCK_DIE_ON_ERROR);
+ if (write_in_full(msg_fd, msgbuf->buf, msgbuf->len) < 0)
+ die_errno("Could not write to %s.", filename);
+ strbuf_release(msgbuf);
+ if (commit_lock_file(&msg_file) < 0)
+ die("Error wrapping up %s", filename);
+}
+
static struct tree *empty_tree(void)
{
struct tree *tree = xcalloc(1, sizeof(struct tree));
@@ -305,17 +309,70 @@ static int fast_forward_to(const unsigned char *to, const unsigned char *from)
return write_ref_sha1(ref_lock, to, "cherry-pick");
}
+static void do_recursive_merge(struct commit *base, struct commit *next,
+ const char *base_label, const char *next_label,
+ unsigned char *head, struct strbuf *msgbuf,
+ char *defmsg)
+{
+ struct merge_options o;
+ struct tree *result, *next_tree, *base_tree, *head_tree;
+ int clean, index_fd;
+ static struct lock_file index_lock;
+
+ index_fd = hold_locked_index(&index_lock, 1);
+
+ read_cache();
+ init_merge_options(&o);
+ o.ancestor = base ? base_label : "(empty tree)";
+ o.branch1 = "HEAD";
+ o.branch2 = next ? next_label : "(empty tree)";
+
+ head_tree = parse_tree_indirect(head);
+ next_tree = next ? next->tree : empty_tree();
+ base_tree = base ? base->tree : empty_tree();
+
+ clean = merge_trees(&o,
+ head_tree,
+ next_tree, base_tree, &result);
+
+ if (active_cache_changed &&
+ (write_cache(index_fd, active_cache, active_nr) ||
+ commit_locked_index(&index_lock)))
+ die("%s: Unable to write new index file", me);
+ rollback_lock_file(&index_lock);
+
+ if (!clean) {
+ int i;
+ strbuf_addstr(msgbuf, "\nConflicts:\n\n");
+ for (i = 0; i < active_nr;) {
+ struct cache_entry *ce = active_cache[i++];
+ if (ce_stage(ce)) {
+ strbuf_addch(msgbuf, '\t');
+ strbuf_addstr(msgbuf, ce->name);
+ strbuf_addch(msgbuf, '\n');
+ while (i < active_nr && !strcmp(ce->name,
+ active_cache[i]->name))
+ i++;
+ }
+ }
+ write_message(msgbuf, defmsg);
+ fprintf(stderr, "Automatic %s failed.%s\n",
+ me, help_msg(commit_name));
+ rerere(allow_rerere_auto);
+ exit(1);
+ }
+ write_message(msgbuf, defmsg);
+ fprintf(stderr, "Finished one %s.\n", me);
+}
+
static int revert_or_cherry_pick(int argc, const char **argv)
{
unsigned char head[20];
struct commit *base, *next, *parent;
const char *base_label, *next_label;
- int i, index_fd, clean;
struct commit_message msg = { NULL, NULL, NULL, NULL, NULL };
char *defmsg = NULL;
- struct merge_options o;
- struct tree *result, *next_tree, *base_tree, *head_tree;
- static struct lock_file index_lock;
+ struct strbuf msgbuf = STRBUF_INIT;
git_config(git_default_config, NULL);
me = action == REVERT ? "revert" : "cherry-pick";
*/
defmsg = git_pathdup("MERGE_MSG");
- msg_fd = hold_lock_file_for_update(&msg_file, defmsg,
- LOCK_DIE_ON_ERROR);
-
- index_fd = hold_locked_index(&index_lock, 1);
if (action == REVERT) {
base = commit;
base_label = msg.label;
next = parent;
next_label = msg.parent_label;
- add_to_msg("Revert \"");
- add_to_msg(msg.subject);
- add_to_msg("\"\n\nThis reverts commit ");
- add_to_msg(sha1_to_hex(commit->object.sha1));
+ strbuf_addstr(&msgbuf, "Revert \"");
+ strbuf_addstr(&msgbuf, msg.subject);
+ strbuf_addstr(&msgbuf, "\"\n\nThis reverts commit ");
+ strbuf_addstr(&msgbuf, sha1_to_hex(commit->object.sha1));
if (commit->parents->next) {
- add_to_msg(", reversing\nchanges made to ");
- add_to_msg(sha1_to_hex(parent->object.sha1));
+ strbuf_addstr(&msgbuf, ", reversing\nchanges made to ");
+ strbuf_addstr(&msgbuf, sha1_to_hex(parent->object.sha1));
}
- add_to_msg(".\n");
+ strbuf_addstr(&msgbuf, ".\n");
} else {
base = parent;
base_label = msg.parent_label;
next = commit;
next_label = msg.label;
set_author_ident_env(msg.message);
- add_message_to_msg(msg.message);
+ add_message_to_msg(&msgbuf, msg.message);
if (no_replay) {
- add_to_msg("(cherry picked from commit ");
- add_to_msg(sha1_to_hex(commit->object.sha1));
- add_to_msg(")\n");
+ strbuf_addstr(&msgbuf, "(cherry picked from commit ");
+ strbuf_addstr(&msgbuf, sha1_to_hex(commit->object.sha1));
+ strbuf_addstr(&msgbuf, ")\n");
}
}
- read_cache();
- init_merge_options(&o);
- o.ancestor = base ? base_label : "(empty tree)";
- o.branch1 = "HEAD";
- o.branch2 = next ? next_label : "(empty tree)";
-
- head_tree = parse_tree_indirect(head);
- next_tree = next ? next->tree : empty_tree();
- base_tree = base ? base->tree : empty_tree();
-
- clean = merge_trees(&o,
- head_tree,
- next_tree, base_tree, &result);
-
- if (active_cache_changed &&
- (write_cache(index_fd, active_cache, active_nr) ||
- commit_locked_index(&index_lock)))
- die("%s: Unable to write new index file", me);
- rollback_lock_file(&index_lock);
-
- if (!clean) {
- add_to_msg("\nConflicts:\n\n");
- for (i = 0; i < active_nr;) {
- struct cache_entry *ce = active_cache[i++];
- if (ce_stage(ce)) {
- add_to_msg("\t");
- add_to_msg(ce->name);
- add_to_msg("\n");
- while (i < active_nr && !strcmp(ce->name,
- active_cache[i]->name))
- i++;
- }
+ if (!strategy || !strcmp(strategy, "recursive") || action == REVERT)
+ do_recursive_merge(base, next, base_label, next_label,
+ head, &msgbuf, defmsg);
+ else {
+ int res;
+ struct commit_list *common = NULL;
+ struct commit_list *remotes = NULL;
+ write_message(&msgbuf, defmsg);
+ commit_list_insert(base, &common);
+ commit_list_insert(next, &remotes);
+ res = try_merge_command(strategy, common,
+ sha1_to_hex(head), remotes);
+ free_commit_list(common);
+ free_commit_list(remotes);
+ if (res) {
+ fprintf(stderr, "Automatic %s with strategy %s failed.%s\n",
+ me, strategy, help_msg(commit_name));
+ rerere(allow_rerere_auto);
+ exit(1);
}
- if (commit_lock_file(&msg_file) < 0)
- die ("Error wrapping up %s", defmsg);
- fprintf(stderr, "Automatic %s failed.%s\n",
- me, help_msg(commit_name));
- rerere(allow_rerere_auto);
- exit(1);
}
- if (commit_lock_file(&msg_file) < 0)
- die ("Error wrapping up %s", defmsg);
- fprintf(stderr, "Finished one %s.\n", me);
/*
*