return 0;
}
- int validate_new_branchname(const char *name, struct strbuf *ref,
- int force, int attr_only)
+ /*
+ * Check if 'name' can be a valid name for a branch; die otherwise.
+ * Return 1 if the named branch already exists; return 0 otherwise.
+ * Fill ref with the full refname for the branch.
+ */
+ int validate_branchname(const char *name, struct strbuf *ref)
{
if (strbuf_check_branch_ref(ref, name))
die(_("'%s' is not a valid branch name."), name);
- if (!ref_exists(ref->buf))
+ return ref_exists(ref->buf);
+ }
+
+ /*
+ * Check if a branch 'name' can be created as a new branch; die otherwise.
+ * 'force' can be used when it is OK for the named branch already exists.
+ * Return 1 if the named branch already exists; return 0 otherwise.
+ * Fill ref with the full refname for the branch.
+ */
+ int validate_new_branchname(const char *name, struct strbuf *ref, int force)
+ {
+ const char *head;
+
+ if (!validate_branchname(name, ref))
return 0;
- else if (!force && !attr_only)
- die(_("A branch named '%s' already exists."), ref->buf + strlen("refs/heads/"));
- if (!attr_only) {
- const char *head;
+ if (!force)
+ die(_("A branch named '%s' already exists."),
+ ref->buf + strlen("refs/heads/"));
+
+ head = resolve_ref_unsafe("HEAD", 0, NULL, NULL);
+ if (!is_bare_repository() && head && !strcmp(head, ref->buf))
+ die(_("Cannot force update the current branch."));
- head = resolve_ref_unsafe("HEAD", 0, NULL, NULL);
- if (!is_bare_repository() && head && !strcmp(head, ref->buf))
- die(_("Cannot force update the current branch."));
- }
return 1;
}
if (track == BRANCH_TRACK_EXPLICIT || track == BRANCH_TRACK_OVERRIDE)
explicit_tracking = 1;
- if (validate_new_branchname(name, &ref, force,
- track == BRANCH_TRACK_OVERRIDE ||
- clobber_head)) {
+ if ((track == BRANCH_TRACK_OVERRIDE || clobber_head)
+ ? validate_branchname(name, &ref)
+ : validate_new_branchname(name, &ref, force)) {
if (!force)
dont_change_ref = 1;
else
die(_("Not a valid object name: '%s'."), start_name);
}
- switch (dwim_ref(start_name, strlen(start_name), oid.hash, &real_ref)) {
+ switch (dwim_ref(start_name, strlen(start_name), &oid, &real_ref)) {
case 0:
/* Not branching from any existing branch */
if (explicit_tracking)
transaction = ref_transaction_begin(&err);
if (!transaction ||
ref_transaction_update(transaction, ref.buf,
- oid.hash, forcing ? NULL : null_sha1,
+ &oid, forcing ? NULL : &null_oid,
0, msg, &err) ||
ref_transaction_commit(transaction, &err))
die("%s", err.buf);
return config_error_nonbool(var);
return color_parse(value, branch_colors[slot]);
}
- return git_default_config(var, value, cb);
+ return git_color_default_config(var, value, cb);
}
static const char *branch_get_color(enum color_branch ix)
if (upstream &&
(reference_name = reference_name_to_free =
resolve_refdup(upstream, RESOLVE_REF_READING,
- oid.hash, NULL)) != NULL)
+ &oid, NULL)) != NULL)
reference_rev = lookup_commit_reference(&oid);
}
if (!reference_rev)
RESOLVE_REF_READING
| RESOLVE_REF_NO_RECURSE
| RESOLVE_REF_ALLOW_BAD_NAME,
- oid.hash, &flags);
+ &oid, &flags);
if (!target) {
error(remote_branch
? _("remote-tracking branch '%s' not found.")
goto next;
}
- if (delete_ref(NULL, name, is_null_oid(&oid) ? NULL : oid.hash,
- REF_NODEREF)) {
+ if (delete_ref(NULL, name, is_null_oid(&oid) ? NULL : &oid,
+ REF_NO_DEREF)) {
error(remote_branch
? _("Error deleting remote-tracking branch '%s'")
: _("Error deleting branch '%s'"),
struct strbuf oldref = STRBUF_INIT, newref = STRBUF_INIT, logmsg = STRBUF_INIT;
struct strbuf oldsection = STRBUF_INIT, newsection = STRBUF_INIT;
int recovery = 0;
- int clobber_head_ok;
if (!oldname) {
if (copy)
* A command like "git branch -M currentbranch currentbranch" cannot
* cause the worktree to become inconsistent with HEAD, so allow it.
*/
- clobber_head_ok = !strcmp(oldname, newname);
-
- validate_new_branchname(newname, &newref, force, clobber_head_ok);
+ if (!strcmp(oldname, newname))
+ validate_branchname(newname, &newref);
+ else
+ validate_new_branchname(newname, &newref, force);
reject_rebase_or_bisect_branch(oldref.buf);
track = git_branch_track;
- head = resolve_refdup("HEAD", 0, head_oid.hash, NULL);
+ head = resolve_refdup("HEAD", 0, &head_oid, NULL);
if (!head)
die(_("Failed to resolve HEAD as a valid ref."));
if (!strcmp(head, "HEAD"))
} else if (argc > 0 && argc <= 2) {
struct branch *branch = branch_get(argv[0]);
- if (!strcmp(argv[0], "HEAD"))
- die(_("it does not make sense to create 'HEAD' manually"));
-
if (!branch)
die(_("no such branch '%s'"), argv[0]);
struct object_id rev;
struct commit *head;
int errs = 0;
- struct lock_file *lock_file;
+ struct lock_file lock_file = LOCK_INIT;
if (opts->track != BRANCH_TRACK_UNSPECIFIED)
die(_("'%s' cannot be used with updating paths"), "--track");
return run_add_interactive(revision, "--patch=checkout",
&opts->pathspec);
- lock_file = xcalloc(1, sizeof(struct lock_file));
-
- hold_locked_index(lock_file, LOCK_DIE_ON_ERROR);
+ hold_locked_index(&lock_file, LOCK_DIE_ON_ERROR);
if (read_cache_preload(&opts->pathspec) < 0)
return error(_("index file corrupt"));
}
errs |= finish_delayed_checkout(&state);
- if (write_locked_index(&the_index, lock_file, COMMIT_LOCK))
+ if (write_locked_index(&the_index, &lock_file, COMMIT_LOCK))
die(_("unable to write new index file"));
- read_ref_full("HEAD", 0, rev.hash, NULL);
+ read_ref_full("HEAD", 0, &rev, NULL);
head = lookup_commit_reference_gently(&rev, 1);
errs |= post_checkout_hook(head, head, 0);
int *writeout_error)
{
int ret;
- struct lock_file *lock_file = xcalloc(1, sizeof(struct lock_file));
+ struct lock_file lock_file = LOCK_INIT;
- hold_locked_index(lock_file, LOCK_DIE_ON_ERROR);
+ hold_locked_index(&lock_file, LOCK_DIE_ON_ERROR);
if (read_cache_preload(NULL) < 0)
return error(_("index file corrupt"));
if (!cache_tree_fully_valid(active_cache_tree))
cache_tree_update(&the_index, WRITE_TREE_SILENT | WRITE_TREE_REPAIR);
- if (write_locked_index(&the_index, lock_file, COMMIT_LOCK))
+ if (write_locked_index(&the_index, &lock_file, COMMIT_LOCK))
die(_("unable to write new index file"));
if (!opts->force && !opts->quiet)
if (!strcmp(new->name, "HEAD") && !new->path && !opts->force_detach) {
/* Nothing to do. */
} else if (opts->force_detach || !new->path) { /* No longer on any branch. */
- update_ref(msg.buf, "HEAD", new->commit->object.oid.hash, NULL,
- REF_NODEREF, UPDATE_REFS_DIE_ON_ERR);
+ update_ref(msg.buf, "HEAD", &new->commit->object.oid, NULL,
+ REF_NO_DEREF, UPDATE_REFS_DIE_ON_ERR);
if (!opts->quiet) {
if (old->path &&
advice_detached_head && !opts->force_detach)
struct object_id rev;
int flag, writeout_error = 0;
memset(&old, 0, sizeof(old));
- old.path = path_to_free = resolve_refdup("HEAD", 0, rev.hash, &flag);
+ old.path = path_to_free = resolve_refdup("HEAD", 0, &rev, &flag);
if (old.path)
old.commit = lookup_commit_reference_gently(&rev, 1);
if (!(flag & REF_ISSYMREF))
setup_branch_path(new);
if (!check_refname_format(new->path, 0) &&
- !read_ref(new->path, branch_rev.hash))
+ !read_ref(new->path, &branch_rev))
oidcpy(rev, &branch_rev);
else
new->path = NULL; /* not an existing branch */
struct object_id rev;
int flag;
- if (!read_ref_full("HEAD", 0, rev.hash, &flag) &&
+ if (!read_ref_full("HEAD", 0, &rev, &flag) &&
(flag & REF_ISSYMREF) && is_null_oid(&rev))
return switch_unborn_to_new_branch(opts);
}
if (opts.new_branch) {
struct strbuf buf = STRBUF_INIT;
- opts.branch_exists =
- validate_new_branchname(opts.new_branch, &buf,
- !!opts.new_branch_force,
- !!opts.new_branch_force);
-
+ if (opts.new_branch_force)
+ opts.branch_exists = validate_branchname(opts.new_branch, &buf);
+ else
+ opts.branch_exists =
+ validate_new_branchname(opts.new_branch, &buf, 0);
strbuf_release(&buf);
}
uint32_t num, last, i, first = 0;
const struct object_id *current = NULL;
- open_pack_index(p);
+ if (open_pack_index(p) || !p->num_objects)
+ return;
+
num = p->num_objects;
last = num;
while (first < last) {
return r;
}
-int find_unique_abbrev_r(char *hex, const unsigned char *sha1, int len)
+struct min_abbrev_data {
+ unsigned int init_len;
+ unsigned int cur_len;
+ char *hex;
+ const unsigned char *hash;
+};
+
+static inline char get_hex_char_from_oid(const struct object_id *oid,
+ unsigned int pos)
+{
+ static const char hex[] = "0123456789abcdef";
+
+ if ((pos & 1) == 0)
+ return hex[oid->hash[pos >> 1] >> 4];
+ else
+ return hex[oid->hash[pos >> 1] & 0xf];
+}
+
+static int extend_abbrev_len(const struct object_id *oid, void *cb_data)
+{
+ struct min_abbrev_data *mad = cb_data;
+
+ unsigned int i = mad->init_len;
+ while (mad->hex[i] && mad->hex[i] == get_hex_char_from_oid(oid, i))
+ i++;
+
+ if (i < GIT_MAX_RAWSZ && i >= mad->cur_len)
+ mad->cur_len = i + 1;
+
+ return 0;
+}
+
+static void find_abbrev_len_for_pack(struct packed_git *p,
+ struct min_abbrev_data *mad)
+{
+ int match = 0;
+ uint32_t num, last, first = 0;
+ struct object_id oid;
+
+ if (open_pack_index(p) || !p->num_objects)
+ return;
+
+ num = p->num_objects;
+ last = num;
+ while (first < last) {
+ uint32_t mid = first + (last - first) / 2;
+ const unsigned char *current;
+ int cmp;
+
+ current = nth_packed_object_sha1(p, mid);
+ cmp = hashcmp(mad->hash, current);
+ if (!cmp) {
+ match = 1;
+ first = mid;
+ break;
+ }
+ if (cmp > 0) {
+ first = mid + 1;
+ continue;
+ }
+ last = mid;
+ }
+
+ /*
+ * first is now the position in the packfile where we would insert
+ * mad->hash if it does not exist (or the position of mad->hash if
+ * it does exist). Hence, we consider a maximum of three objects
+ * nearby for the abbreviation length.
+ */
+ mad->init_len = 0;
+ if (!match) {
+ nth_packed_object_oid(&oid, p, first);
+ extend_abbrev_len(&oid, mad);
+ } else if (first < num - 1) {
+ nth_packed_object_oid(&oid, p, first + 1);
+ extend_abbrev_len(&oid, mad);
+ }
+ if (first > 0) {
+ nth_packed_object_oid(&oid, p, first - 1);
+ extend_abbrev_len(&oid, mad);
+ }
+ mad->init_len = mad->cur_len;
+}
+
+static void find_abbrev_len_packed(struct min_abbrev_data *mad)
{
- int status, exists;
+ struct packed_git *p;
+
+ prepare_packed_git();
+ for (p = packed_git; p; p = p->next)
+ find_abbrev_len_for_pack(p, mad);
+}
+int find_unique_abbrev_r(char *hex, const unsigned char *sha1, int len)
+{
+ struct disambiguate_state ds;
+ struct min_abbrev_data mad;
+ struct object_id oid_ret;
if (len < 0) {
unsigned long count = approximate_object_count();
/*
sha1_to_hex_r(hex, sha1);
if (len == GIT_SHA1_HEXSZ || !len)
return GIT_SHA1_HEXSZ;
- exists = has_sha1_file(sha1);
- while (len < GIT_SHA1_HEXSZ) {
- struct object_id oid_ret;
- status = get_short_oid(hex, len, &oid_ret, GET_OID_QUIETLY);
- if (exists
- ? !status
- : status == SHORT_NAME_NOT_FOUND) {
- hex[len] = 0;
- return len;
- }
- len++;
- }
- return len;
+
+ mad.init_len = len;
+ mad.cur_len = len;
+ mad.hex = hex;
+ mad.hash = sha1;
+
+ find_abbrev_len_packed(&mad);
+
+ if (init_object_disambiguation(hex, mad.cur_len, &ds) < 0)
+ return -1;
+
+ ds.fn = extend_abbrev_len;
+ ds.always_call_fn = 1;
+ ds.cb_data = (void *)&mad;
+
+ find_short_object_filename(&ds);
+ (void)finish_object_disambiguation(&ds, &oid_ret);
+
+ hex[mad.cur_len] = 0;
+ return mad.cur_len;
}
const char *find_unique_abbrev(const unsigned char *sha1, int len)
if (len == GIT_SHA1_HEXSZ && !get_oid_hex(str, oid)) {
if (warn_ambiguous_refs && warn_on_object_refname_ambiguity) {
- refs_found = dwim_ref(str, len, tmp_oid.hash, &real_ref);
+ refs_found = dwim_ref(str, len, &tmp_oid, &real_ref);
if (refs_found > 0) {
warning(warn_msg, len, str);
if (advice_object_name_warning)
if (!len && reflog_len)
/* allow "@{...}" to mean the current branch reflog */
- refs_found = dwim_ref("HEAD", 4, oid->hash, &real_ref);
+ refs_found = dwim_ref("HEAD", 4, oid, &real_ref);
else if (reflog_len)
- refs_found = dwim_log(str, len, oid->hash, &real_ref);
+ refs_found = dwim_log(str, len, oid, &real_ref);
else
- refs_found = dwim_ref(str, len, oid->hash, &real_ref);
+ refs_found = dwim_ref(str, len, oid, &real_ref);
if (!refs_found)
return -1;
return -1;
}
}
- if (read_ref_at(real_ref, flags, at_time, nth, oid->hash, NULL,
+ if (read_ref_at(real_ref, flags, at_time, nth, oid, NULL,
&co_time, &co_tz, &co_cnt)) {
if (!len) {
if (starts_with(real_ref, "refs/heads/")) {
int strbuf_check_branch_ref(struct strbuf *sb, const char *name)
{
- strbuf_branchname(sb, name, INTERPRET_BRANCH_LOCAL);
+ if (startup_info->have_repository)
+ strbuf_branchname(sb, name, INTERPRET_BRANCH_LOCAL);
+ else
+ strbuf_addstr(sb, name);
- if (name[0] == '-')
- return -1;
+
+ /*
+ * This splice must be done even if we end up rejecting the
+ * name; builtin/branch.c::copy_or_rename_branch() still wants
+ * to see what the name expanded to so that "branch -m" can be
+ * used as a tool to correct earlier mistakes.
+ */
strbuf_splice(sb, 0, 0, "refs/heads/", 11);
+
+ if (*name == '-' ||
+ !strcmp(sb->buf, "refs/heads/HEAD"))
+ return -1;
+
return check_refname_format(sb->buf, 0);
}