int force_detach;
int writeout_stage;
int writeout_error;
+ int overwrite_ignore;
/* not set by parse_options */
int branch_exists;
return error(_("path '%s' does not have their version"), ce->name);
}
-static int check_all_stages(struct cache_entry *ce, int pos)
+static int check_stages(unsigned stages, struct cache_entry *ce, int pos)
{
- if (ce_stage(ce) != 1 ||
- active_nr <= pos + 2 ||
- strcmp(active_cache[pos+1]->name, ce->name) ||
- ce_stage(active_cache[pos+1]) != 2 ||
- strcmp(active_cache[pos+2]->name, ce->name) ||
- ce_stage(active_cache[pos+2]) != 3)
- return error(_("path '%s' does not have all three versions"),
- ce->name);
+ unsigned seen = 0;
+ const char *name = ce->name;
+
+ while (pos < active_nr) {
+ ce = active_cache[pos];
+ if (strcmp(name, ce->name))
+ break;
+ seen |= (1 << ce_stage(ce));
+ pos++;
+ }
+ if ((stages & seen) != stages)
+ return error(_("path '%s' does not have all necessary versions"),
+ name);
return 0;
}
int status;
unsigned char sha1[20];
mmbuffer_t result_buf;
+ unsigned char threeway[3][20];
+ unsigned mode = 0;
+
+ memset(threeway, 0, sizeof(threeway));
+ while (pos < active_nr) {
+ int stage;
+ stage = ce_stage(ce);
+ if (!stage || strcmp(path, ce->name))
+ break;
+ hashcpy(threeway[stage - 1], ce->sha1);
+ if (stage == 2)
+ mode = create_ce_mode(ce->ce_mode);
+ pos++;
+ ce = active_cache[pos];
+ }
+ if (is_null_sha1(threeway[1]) || is_null_sha1(threeway[2]))
+ return error(_("path '%s' does not have necessary versions"), path);
- if (ce_stage(ce) != 1 ||
- active_nr <= pos + 2 ||
- strcmp(active_cache[pos+1]->name, path) ||
- ce_stage(active_cache[pos+1]) != 2 ||
- strcmp(active_cache[pos+2]->name, path) ||
- ce_stage(active_cache[pos+2]) != 3)
- return error(_("path '%s' does not have all 3 versions"), path);
-
- read_mmblob(&ancestor, active_cache[pos]->sha1);
- read_mmblob(&ours, active_cache[pos+1]->sha1);
- read_mmblob(&theirs, active_cache[pos+2]->sha1);
+ read_mmblob(&ancestor, threeway[0]);
+ read_mmblob(&ours, threeway[1]);
+ read_mmblob(&theirs, threeway[2]);
/*
* NEEDSWORK: re-create conflicts from merges with
if (write_sha1_file(result_buf.ptr, result_buf.size,
blob_type, sha1))
die(_("Unable to add merge result for '%s'"), path);
- ce = make_cache_entry(create_ce_mode(active_cache[pos+1]->ce_mode),
- sha1,
- path, 2, 0);
+ ce = make_cache_entry(mode, sha1, path, 2, 0);
if (!ce)
die(_("make_cache_entry failed for path '%s'"), path);
status = checkout_entry(ce, state, NULL);
} else if (stage) {
errs |= check_stage(stage, ce, pos);
} else if (opts->merge) {
- errs |= check_all_stages(ce, pos);
+ errs |= check_stages((1<<2) | (1<<3), ce, pos);
} else {
errs = 1;
error(_("path '%s' is unmerged"), ce->name);
commit_locked_index(lock_file))
die(_("unable to write new index file"));
- resolve_ref("HEAD", rev, 0, &flag);
+ read_ref_full("HEAD", rev, 0, &flag);
head = lookup_commit_reference_gently(rev, 1);
errs |= post_checkout_hook(head, head, 0);
topts.gently = opts->merge && old->commit;
topts.verbose_update = !opts->quiet;
topts.fn = twoway_merge;
- topts.dir = xcalloc(1, sizeof(*topts.dir));
- topts.dir->flags |= DIR_SHOW_IGNORED;
- setup_standard_excludes(topts.dir);
+ if (opts->overwrite_ignore) {
+ topts.dir = xcalloc(1, sizeof(*topts.dir));
+ topts.dir->flags |= DIR_SHOW_IGNORED;
+ setup_standard_excludes(topts.dir);
+ }
tree = parse_tree_indirect(old->commit ?
old->commit->object.sha1 :
EMPTY_TREE_SHA1_BIN);
strbuf_release(&sb);
}
-static void detach_advice(const char *old_path, const char *new_name)
-{
- const char fmt[] =
- "Note: checking out '%s'.\n\n"
- "You are in 'detached HEAD' state. You can look around, make experimental\n"
- "changes and commit them, and you can discard any commits you make in this\n"
- "state without impacting any branches by performing another checkout.\n\n"
- "If you want to create a new branch to retain commits you create, you may\n"
- "do so (now or later) by using -b with the checkout command again. Example:\n\n"
- " git checkout -b new_branch_name\n\n";
-
- fprintf(stderr, fmt, new_name);
-}
-
static void update_refs_for_switch(struct checkout_opts *opts,
struct branch_info *old,
struct branch_info *new)
REF_NODEREF, DIE_ON_ERR);
if (!opts->quiet) {
if (old->path && advice_detached_head)
- detach_advice(old->path, new->name);
+ detach_advice(new->name);
describe_detached_head(_("HEAD is now at"), new->commit);
}
} else if (new->path) { /* Switch branches. */
{
int ret = 0;
struct branch_info old;
+ void *path_to_free;
unsigned char rev[20];
int flag;
memset(&old, 0, sizeof(old));
- old.path = xstrdup(resolve_ref("HEAD", rev, 0, &flag));
+ old.path = path_to_free = resolve_refdup("HEAD", rev, 0, &flag);
old.commit = lookup_commit_reference_gently(rev, 1);
- if (!(flag & REF_ISSYMREF)) {
- free((char *)old.path);
+ if (!(flag & REF_ISSYMREF))
old.path = NULL;
- }
if (old.path && !prefixcmp(old.path, "refs/heads/"))
old.name = old.path + strlen("refs/heads/");
}
ret = merge_working_tree(opts, &old, new);
- if (ret)
+ if (ret) {
+ free(path_to_free);
return ret;
+ }
if (!opts->quiet && !old.path && old.commit && new->commit != old.commit)
orphaned_commit_warning(old.commit);
update_refs_for_switch(opts, &old, new);
ret = post_checkout_hook(old.commit, new->commit, 1);
- free((char *)old.path);
+ free(path_to_free);
return ret || opts->writeout_error;
}
setup_branch_path(new);
if (!check_refname_format(new->path, 0) &&
- resolve_ref(new->path, branch_rev, 1, NULL))
+ !read_ref(new->path, branch_rev))
hashcpy(rev, branch_rev);
else
new->path = NULL; /* not an existing branch */
return argcount;
}
+static int switch_unborn_to_new_branch(struct checkout_opts *opts)
+{
+ int status;
+ struct strbuf branch_ref = STRBUF_INIT;
+
+ strbuf_addf(&branch_ref, "refs/heads/%s", opts->new_branch);
+ status = create_symref("HEAD", branch_ref.buf, "checkout -b");
+ strbuf_release(&branch_ref);
+ return status;
+}
+
int cmd_checkout(int argc, const char **argv, const char *prefix)
{
struct checkout_opts opts;
3),
OPT__FORCE(&opts.force, "force checkout (throw away local modifications)"),
OPT_BOOLEAN('m', "merge", &opts.merge, "perform a 3-way merge with the new branch"),
+ OPT_BOOLEAN(0, "overwrite-ignore", &opts.overwrite_ignore, "update ignored files (default)"),
OPT_STRING(0, "conflict", &conflict_style, "style",
"conflict style (merge or diff3)"),
OPT_BOOLEAN('p', "patch", &patch_mode, "select hunks interactively"),
memset(&opts, 0, sizeof(opts));
memset(&new, 0, sizeof(new));
+ opts.overwrite_ignore = 1;
gitmodules_config();
git_config(git_checkout_config, &opts);
if (opts.writeout_stage)
die(_("--ours/--theirs is incompatible with switching branches."));
+ if (!new.commit) {
+ unsigned char rev[20];
+ int flag;
+
+ if (!read_ref_full("HEAD", rev, 0, &flag) &&
+ (flag & REF_ISSYMREF) && is_null_sha1(rev))
+ return switch_unborn_to_new_branch(&opts);
+ }
return switch_branches(&opts, &new);
}