aboutsummaryrefslogtreecommitdiff
path: root/builtin-merge.c
diff options
context:
space:
mode:
Diffstat (limited to 'builtin-merge.c')
-rw-r--r--builtin-merge.c99
1 files changed, 80 insertions, 19 deletions
diff --git a/builtin-merge.c b/builtin-merge.c
index 921453949..3aaec7bed 100644
--- a/builtin-merge.c
+++ b/builtin-merge.c
@@ -24,6 +24,7 @@
#include "rerere.h"
#include "help.h"
#include "merge-recursive.h"
+#include "resolve-undo.h"
#define DEFAULT_TWOHEAD (1<<0)
#define DEFAULT_OCTOPUS (1<<1)
@@ -43,14 +44,18 @@ static const char * const builtin_merge_usage[] = {
static int show_diffstat = 1, option_log, squash;
static int option_commit = 1, allow_fast_forward = 1;
+static int fast_forward_only;
static int allow_trivial = 1, have_message;
static struct strbuf merge_msg;
static struct commit_list *remoteheads;
static unsigned char head[20], stash[20];
static struct strategy **use_strategies;
static size_t use_strategies_nr, use_strategies_alloc;
+static const char **xopts;
+static size_t xopts_nr, xopts_alloc;
static const char *branch;
static int verbosity;
+static int allow_rerere_auto;
static struct strategy all_strategy[] = {
{ "recursive", DEFAULT_TWOHEAD | NO_TRIVIAL },
@@ -145,6 +150,17 @@ static int option_parse_strategy(const struct option *opt,
return 0;
}
+static int option_parse_x(const struct option *opt,
+ const char *arg, int unset)
+{
+ if (unset)
+ return 0;
+
+ ALLOC_GROW(xopts, xopts_nr + 1, xopts_alloc);
+ xopts[xopts_nr++] = xstrdup(arg);
+ return 0;
+}
+
static int option_parse_n(const struct option *opt,
const char *arg, int unset)
{
@@ -166,9 +182,14 @@ static struct option builtin_merge_options[] = {
OPT_BOOLEAN(0, "commit", &option_commit,
"perform a commit if the merge succeeds (default)"),
OPT_BOOLEAN(0, "ff", &allow_fast_forward,
- "allow fast forward (default)"),
+ "allow fast-forward (default)"),
+ OPT_BOOLEAN(0, "ff-only", &fast_forward_only,
+ "abort if fast-forward is not possible"),
+ OPT_RERERE_AUTOUPDATE(&allow_rerere_auto),
OPT_CALLBACK('s', "strategy", &use_strategies, "strategy",
"merge strategy to use", option_parse_strategy),
+ OPT_CALLBACK('X', "strategy-option", &xopts, "option=value",
+ "option for selected merge strategy", option_parse_x),
OPT_CALLBACK('m', "message", &merge_msg, "message",
"message to be used for the merge commit (if any)",
option_parse_message),
@@ -264,6 +285,7 @@ static void squash_message(void)
struct strbuf out = STRBUF_INIT;
struct commit_list *j;
int fd;
+ struct pretty_print_context ctx = {0};
printf("Squash commit -- not updating HEAD\n");
fd = open(git_path("SQUASH_MSG"), O_WRONLY | O_CREAT, 0666);
@@ -285,13 +307,15 @@ static void squash_message(void)
if (prepare_revision_walk(&rev))
die("revision walk setup failed");
+ ctx.abbrev = rev.abbrev;
+ ctx.date_mode = rev.date_mode;
+
strbuf_addstr(&out, "Squashed commit of the following:\n");
while ((commit = get_revision(&rev)) != NULL) {
strbuf_addch(&out, '\n');
strbuf_addf(&out, "commit %s\n",
sha1_to_hex(commit->object.sha1));
- pretty_print_commit(rev.commit_format, commit, &out, rev.abbrev,
- NULL, NULL, rev.date_mode, 0);
+ pretty_print_commit(rev.commit_format, commit, &out, &ctx);
}
if (write(fd, out.buf, out.len) < 0)
die_errno("Writing SQUASH_MSG");
@@ -528,7 +552,7 @@ static int try_merge_strategy(const char *strategy, struct commit_list *common,
const char *head_arg)
{
const char **args;
- int i = 0, ret;
+ int i = 0, x = 0, ret;
struct commit_list *j;
struct strbuf buf = STRBUF_INIT;
int index_fd;
@@ -557,7 +581,20 @@ static int try_merge_strategy(const char *strategy, struct commit_list *common,
init_merge_options(&o);
if (!strcmp(strategy, "subtree"))
- o.subtree_merge = 1;
+ o.subtree_shift = "";
+
+ for (x = 0; x < xopts_nr; x++) {
+ if (!strcmp(xopts[x], "ours"))
+ o.recursive_variant = MERGE_RECURSIVE_OURS;
+ else if (!strcmp(xopts[x], "theirs"))
+ o.recursive_variant = MERGE_RECURSIVE_THEIRS;
+ else if (!strcmp(xopts[x], "subtree"))
+ o.subtree_shift = "";
+ else if (!prefixcmp(xopts[x], "subtree="))
+ o.subtree_shift = xopts[x]+8;
+ else
+ die("Unknown option for merge-recursive: -X%s", xopts[x]);
+ }
o.branch1 = head_arg;
o.branch2 = remoteheads->item->util;
@@ -575,10 +612,16 @@ static int try_merge_strategy(const char *strategy, struct commit_list *common,
rollback_lock_file(lock);
return clean ? 0 : 1;
} else {
- args = xmalloc((4 + commit_list_count(common) +
+ args = xmalloc((4 + xopts_nr + commit_list_count(common) +
commit_list_count(remoteheads)) * sizeof(char *));
strbuf_addf(&buf, "merge-%s", strategy);
args[i++] = buf.buf;
+ for (x = 0; x < xopts_nr; x++) {
+ char *s = xmalloc(strlen(xopts[x])+2+1);
+ strcpy(s, "--");
+ strcpy(s+2, xopts[x]);
+ args[i++] = s;
+ }
for (j = common; j; j = j->next)
args[i++] = xstrdup(sha1_to_hex(j->item->object.sha1));
args[i++] = "--";
@@ -589,6 +632,8 @@ static int try_merge_strategy(const char *strategy, struct commit_list *common,
ret = run_command_v_opt(args, RUN_GIT_CMD);
strbuf_release(&buf);
i = 1;
+ for (x = 0; x < xopts_nr; x++)
+ free((void *)args[i++]);
for (j = common; j; j = j->next)
free((void *)args[i++]);
i += 2;
@@ -598,6 +643,7 @@ static int try_merge_strategy(const char *strategy, struct commit_list *common,
discard_cache();
if (read_cache() < 0)
die("failed to read the cache");
+ resolve_undo_clear();
return ret;
}
}
@@ -612,11 +658,10 @@ static void count_diff_files(struct diff_queue_struct *q,
static int count_unmerged_entries(void)
{
- const struct index_state *state = &the_index;
int i, ret = 0;
- for (i = 0; i < state->cache_nr; i++)
- if (ce_stage(state->cache[i]))
+ for (i = 0; i < active_nr; i++)
+ if (ce_stage(active_cache[i]))
ret++;
return ret;
@@ -784,7 +829,7 @@ static int suggest_conflicts(void)
}
}
fclose(fp);
- rerere();
+ rerere(allow_rerere_auto);
printf("Automatic merge failed; "
"fix conflicts and then commit the result.\n");
return 1;
@@ -841,12 +886,22 @@ int cmd_merge(int argc, const char **argv, const char *prefix)
const char *best_strategy = NULL, *wt_strategy = NULL;
struct commit_list **remotes = &remoteheads;
- if (file_exists(git_path("MERGE_HEAD")))
- die("You have not concluded your merge. (MERGE_HEAD exists)");
- if (read_cache_unmerged())
- die("You are in the middle of a conflicted merge."
- " (index unmerged)");
+ if (read_cache_unmerged()) {
+ die_resolve_conflict("merge");
+ }
+ if (file_exists(git_path("MERGE_HEAD"))) {
+ /*
+ * There is no unmerged entry, don't advise 'git
+ * add/rm <file>', just 'git commit'.
+ */
+ if (advice_resolve_conflict)
+ die("You have not concluded your merge (MERGE_HEAD exists).\n"
+ "Please, commit your changes before you can merge.");
+ else
+ die("You have not concluded your merge (MERGE_HEAD exists).");
+ }
+ resolve_undo_clear();
/*
* Check if we are _not_ on a detached HEAD, i.e. if there is a
* current branch.
@@ -874,6 +929,9 @@ int cmd_merge(int argc, const char **argv, const char *prefix)
option_commit = 0;
}
+ if (!allow_fast_forward && fast_forward_only)
+ die("You cannot combine --no-ff with --ff-only.");
+
if (!argc)
usage_with_options(builtin_merge_usage,
builtin_merge_options);
@@ -1015,7 +1073,7 @@ int cmd_merge(int argc, const char **argv, const char *prefix)
hex,
find_unique_abbrev(remoteheads->item->object.sha1,
DEFAULT_ABBREV));
- strbuf_addstr(&msg, "Fast forward");
+ strbuf_addstr(&msg, "Fast-forward");
if (have_message)
strbuf_addstr(&msg,
" (no commit created; -m option ignored)");
@@ -1033,16 +1091,16 @@ int cmd_merge(int argc, const char **argv, const char *prefix)
} else if (!remoteheads->next && common->next)
;
/*
- * We are not doing octopus and not fast forward. Need
+ * We are not doing octopus and not fast-forward. Need
* a real merge.
*/
else if (!remoteheads->next && !common->next && option_commit) {
/*
- * We are not doing octopus, not fast forward, and have
+ * We are not doing octopus, not fast-forward, and have
* only one common.
*/
refresh_cache(REFRESH_QUIET);
- if (allow_trivial) {
+ if (allow_trivial && !fast_forward_only) {
/* See if it is really trivial. */
git_committer_info(IDENT_ERROR_ON_NO_NAME);
printf("Trying really trivial in-index merge...\n");
@@ -1081,6 +1139,9 @@ int cmd_merge(int argc, const char **argv, const char *prefix)
}
}
+ if (fast_forward_only)
+ die("Not possible to fast-forward, aborting.");
+
/* We are going to make a new commit. */
git_committer_info(IDENT_ERROR_ON_NO_NAME);
generated by cgit v1.2.1 (git 2.18.0) at 2024-07-30 06:59:28 +0000