checkout: tone down the "forked status" diagnostic messages

When checking out a branch that is behind or forked from a
branch you are building on top of, we used to show full
left-right log but if you already _know_ you have long history
since you forked, it is a bit too much.

This tones down the message quite a bit, by only showing the
number of commits each side has since they diverged.  Also the
message is not shown at all under --quiet.

Signed-off-by: Junio C Hamano <gitster@pobox.com>
This commit is contained in:
Junio C Hamano 2008-02-20 15:05:23 -08:00
parent 569012bf91
commit b0030db331

View File

@ -301,64 +301,88 @@ static void adjust_to_tracking(struct branch_info *new, struct checkout_opts *op
char *base;
unsigned char sha1[20];
struct commit *ours, *theirs;
const char *msgfmt;
char symmetric[84];
int show_log;
struct rev_info revs;
const char *rev_argv[10];
int rev_argc;
int num_ours, num_theirs;
const char *remote_msg;
struct branch *branch = branch_get(NULL);
/*
* Nothing to report unless we are marked to build on top of
* somebody else.
*/
if (!branch || !branch->merge)
return;
base = branch->merge[0]->dst;
ours = new->commit;
sprintf(symmetric, "%s", sha1_to_hex(ours->object.sha1));
/*
* Ok, it is tracking base; is it ahead of us?
* If what we used to build on no longer exists, there is
* nothing to report.
*/
base = branch->merge[0]->dst;
if (!resolve_ref(base, sha1, 1, NULL))
return;
theirs = lookup_commit(sha1);
sprintf(symmetric + 40, "...%s", sha1_to_hex(sha1));
ours = new->commit;
if (!hashcmp(sha1, ours->object.sha1))
return; /* we are the same */
show_log = 1;
if (in_merge_bases(theirs, &ours, 1)) {
msgfmt = "You are ahead of the tracked branch '%s'\n";
show_log = 0;
}
else if (in_merge_bases(ours, &theirs, 1))
msgfmt = "Your branch can be fast-forwarded to the tracked branch '%s'\n";
else
msgfmt = "Both your branch and the tracked branch '%s' have own changes, you would eventually need to merge\n";
/* Run "rev-list --left-right ours...theirs" internally... */
rev_argc = 0;
rev_argv[rev_argc++] = NULL;
rev_argv[rev_argc++] = "--left-right";
rev_argv[rev_argc++] = symmetric;
rev_argv[rev_argc++] = "--";
rev_argv[rev_argc] = NULL;
if (!prefixcmp(base, "refs/remotes/"))
strcpy(symmetric, sha1_to_hex(ours->object.sha1));
strcpy(symmetric + 40, "...");
strcpy(symmetric + 43, sha1_to_hex(theirs->object.sha1));
init_revisions(&revs, NULL);
setup_revisions(rev_argc, rev_argv, &revs, NULL);
prepare_revision_walk(&revs);
/* ... and count the commits on each side. */
num_ours = 0;
num_theirs = 0;
while (1) {
struct commit *c = get_revision(&revs);
if (!c)
break;
if (c->object.flags & SYMMETRIC_LEFT)
num_ours++;
else
num_theirs++;
}
if (!prefixcmp(base, "refs/remotes/")) {
remote_msg = " remote";
base += strlen("refs/remotes/");
fprintf(stderr, msgfmt, base);
if (show_log) {
const char *args[32];
int ac;
ac = 0;
args[ac++] = "log";
args[ac++] = "--pretty=oneline";
args[ac++] = "--abbrev-commit";
args[ac++] = "--left-right";
args[ac++] = "--boundary";
args[ac++] = symmetric;
args[ac++] = "--";
args[ac] = NULL;
run_command_v_opt(args, RUN_GIT_CMD);
} else {
remote_msg = "";
}
}
if (!num_theirs)
printf("Your branch is ahead of the tracked%s branch '%s' "
"by %d commit%s.\n",
remote_msg, base,
num_ours, (num_ours == 1) ? "" : "s");
else if (!num_ours)
printf("Your branch is behind of the tracked%s branch '%s' "
"by %d commit%s,\n"
"and can be fast-forwarded.\n",
remote_msg, base,
num_theirs, (num_theirs == 1) ? "" : "s");
else
printf("Your branch and the tracked%s branch '%s' "
"have diverged,\nand respectively "
"have %d and %d different commit(s) each.\n",
remote_msg, base,
num_ours, num_theirs);
}
static void update_refs_for_switch(struct checkout_opts *opts,
struct branch_info *old,
@ -402,7 +426,7 @@ static void update_refs_for_switch(struct checkout_opts *opts,
}
remove_branch_state();
strbuf_release(&msg);
if (new->path || !strcmp(new->name, "HEAD"))
if (!opts->quiet && (new->path || !strcmp(new->name, "HEAD")))
adjust_to_tracking(new, opts);
}